[librptexture] ICO: For Win1.x icons with both DIB and DDB, show both in the icon directory.

The DDB is usually half the size of the DIB.

NOTE: The DDB, which comes after the DIB, is missing the format WORD.
The header is otherwise the same format.

Rename vv_icons to v_icons, since it's not a vector of vectors.

CMakeLists.txt

@@ -1,5 +1,5 @@
 # ROM Properties Page Shell Extension
-CMAKE_MINIMUM_REQUIRED(VERSION 3.5)
+CMAKE_MINIMUM_REQUIRED(VERSION 3.5...3.10)
 
 # CMP0048: Set VERSION variables based on the project version specified in PROJECT().
 # Introduced in CMake 3.0.
@@ -27,6 +27,12 @@ IF(POLICY CMP0151)
 	CMAKE_POLICY(SET CMP0151 NEW)
 ENDIF(POLICY CMP0151)
 
+# CMP0177: Normalize INSTALL() destination paths.
+# Introduced in CMake 3.31.
+IF(POLICY CMP0177)
+	CMAKE_POLICY(SET CMP0177 NEW)
+ENDIF(POLICY CMP0177)
+
 # Read the project version.
 CONFIGURE_FILE(version.txt version.txt.tmp)
 FILE(STRINGS version.txt RP_VERSION_FILE)
@@ -89,13 +95,13 @@ SET(CMAKE_C_STANDARD_REQUIRED OFF)
 SET(CMAKE_C_EXTENSIONS ON)
 SET(CMAKE_CXX_STANDARD_REQUIRED OFF)
 SET(CMAKE_CXX_EXTENSIONS ON)
-IF(CMAKE_VERSION VERSION_GREATER 3.20)		# >= 3.21
+IF(CMAKE_VERSION VERSION_GREATER 3.20.99)	# >= 3.21
 	SET(CMAKE_C_STANDARD 17)
 	SET(CMAKE_CXX_STANDARD 20)
-ELSEIF(CMAKE_VERSION VERSION_GREATER 3.11)	# >= 3.12
+ELSEIF(CMAKE_VERSION VERSION_GREATER 3.11.99)	# >= 3.12
 	SET(CMAKE_C_STANDARD 11)
 	SET(CMAKE_CXX_STANDARD 20)
-ELSEIF(CMAKE_VERSION VERSION_GREATER 3.7)	# >= 3.8
+ELSEIF(CMAKE_VERSION VERSION_GREATER 3.7.99)	# >= 3.8
 	SET(CMAKE_C_STANDARD 11)
 	SET(CMAKE_CXX_STANDARD 17)
 ELSE()

NEWS.md

@@ -1,5 +1,103 @@
 # Changes
 
+## v2.6 (released 2025/??/??)
+
+* New parsers:
+  * ICO: Windows icons and cursors. Supports most icons and cursors designed
+    for Windows 3.x and later (including Windows Vista PNG-format icons),
+    plus the old Windows 1.x format. Only the "best" version for each icon
+    is selected for thumbnailing. (Largest size and highest color depth.)
+    * Icon thumbnailing is not actually enabled on Windows and Linux systems
+      at the moment, since it may conflict with system icon handling.
+      It's mostly only usable for rpcli and for use as a subclass elsewhere.
+    * Partially fixes #170: Icon files: ICNS, ICO, EXE
+
+* New parser features:
+  * Xbox360_STFS: Fix titles for some packages that were authored incorrectly
+    and have mojibake titles. Specifically, the titles were originally encoded
+    as UTF-8, but when building the package, they were handled as if they were
+    cp1252 when being converted to UTF-16BE.
+    * Fixes #450: X360 - Non-Latin Titles appearing as mojibake
+      * Reported by @Masamune3210.
+  * EXE: The application icon can now be extracted using rpcli.
+  * ISO: AUTORUN.INF is now parsed. This includes a tab showing the contents
+    of AUTORUN.INF, as well as the disc icon from a .ico or .exe/.dll file.
+    * Fixes #232: ISO: Parse autorun.inf
+  * ISO: Joliet file systems are now partially supported. This was added to
+    handle older Windows disc images that use a long filename for the icon,
+    and the disc is authored with Joliet for long filenames but an old version
+    of ISO-9660, resulting in 8.3 filenames in the ISO-9660 directories.
+
+* Bug fixes:
+  * Windows: Work around a potential libpng crash when attempting to read
+    empty data as a PNG image. (Needs more debugging for a proper fix...)
+    * See #451: libpng errors crash due to libpng setjmp/longjmp (Windows 10, release builds only)
+      * Reported by @Masamune3210.
+  * Qoi: R/B channels were incorrectly swapped when this was first added in v2.5.
+    * Affects: v2.5 - v2.5.1
+  * Fix an issue where an 'abgr' swizzle might fail on little-endian systems.
+
+* Other changes:
+  * rpcli: Added more colorization for warning messages.
+  * rpcli: Refactored console handling into a separate library, libgsvt.
+  * IsoPartition: Implemented readdir(). Not currently used by anything, though.
+  * KDE (KF5, KF6): Improved image quality for RFT_LISTDATA fields with icons.
+
+## v2.5.1 (released 2025/05/10)
+
+* New parser features:
+  * ISO: Show the sector mode in addition to sector sizes.
+    * Fixes #322: Underlying CD image type for ISO
+      * Requested by @DankRank.
+  * SNES: List the Nintendo Power directory for full NP cartridge dumps.
+    * Fixes #154: SNES: Nintendo Power directory
+  * MegaDrive: Add external image URL support for the Teradrive TMSS ROM.
+
+* Bug fixes:
+  * NintendoDS_BNR: Animated icons were missing the animated icon flag.
+    * Affects: v2.4 - v2.5
+  * EXE: Don't show the "XML parsing failed" warning if the EXE doesn't
+    actually have a manifest.
+    * Affects: v2.5
+  * rpcli: SCSI inquiry was accidentally broken during a code cleanup.
+    * Affects: v2.3 - v2.5
+  * ISO: Get the sector size from the underlying disc reader classes if
+    not reading directly from a file.
+    * The SparseDiscReader changes in v2.3 broke this, so anything that
+      uses an ISO-9660 format showed 2048-byte sectors, even if this
+      wasn't the case.
+  * KDE: On KF6, ListData widgets that didn't specify a default sorting
+    method ended up being sorted in reverse-order by default. Not sure
+    why this changed in Qt6. A workaround has been applied to fix it.
+  * ISO: Fix a typo that broke "Volume Size" on CD-i volumes.
+    * Affects: v1.8 - v2.5
+  * Build system: DT_RELR detection was broken and didn't work properly
+    since it was implemented in v2.0. It now works properly.
+  * GTK4: Fix a potential crash in DragImage when using `rp-stub -R`.
+  * WiiUPackage: vWii packages are now handled properly.
+
+* Other changes:
+  * Added support for localsearch-3.8, the new name of Tracker.
+    This is internally handled as API "3L".
+    * Fixes #446: Use `localsearch` paths instead of `tracker3-miners`
+      * Reported by @lufog.
+  * rpcli: Improved Unicode output such that it works properly on older versions
+    of Windows, including Windows XP and Windows 7, by using WriteConsoleW().
+    This requires converting from UTF-8 to UTF-16, but it turns out doing this
+    is actually faster than printf/cout, even on versions of Windows that support
+    UTF-8 properly, so now it's used on Windows 10 as well.
+  * rpcli: Some more status and error messages are now colorized if printing to
+    a console. (Cyan for status messages; red for error messages.)
+    * Colorization is now disabled on non-Windows systems if TERM is not set to
+      a terminal that supports color.
+    * URLs are now colorized and marked up using "OSC 8", which makes them
+      clickable on terminals that support it.
+  * The xattr tab now supports displaying file compression algorithms in some
+    cases. On Windows, it will indicate LZNT1 ("standard" NTFS compression) on
+    all versions, and if using Windows 10 or later, it will indicate newer
+    algorithms in use, e.g. the XPRESS and LZX algorithms. On Linux, btrfs's
+    zlib, lzo, and zstd algorithms will be displayed.
+
 ## v2.5 (released 2025/04/19)
 
 * New parsers:
@@ -86,6 +184,7 @@
     can get tripped up because it uses C-style varargs.
   * rpcli: Text output for "warning" messages is now colorized if
     printing to a terminal.
+  * rpcli: On Windows, enable UTF-8 console output if using Windows 7 or later.
   * Removed IFUNC support. It's only supported by glibc on Linux (and possibly
     some of the BSDs), and it adds a lot of complexity. The regular C dispatch
     functions only have a few instructions of overhead in most cases.

README.md

@@ -11,10 +11,12 @@ video game ROM and disc images.
 [![CodeFactor](https://www.codefactor.io/repository/github/gerbilsoft/rom-properties/badge)](https://www.codefactor.io/repository/github/gerbilsoft/rom-properties/overview)
 [![codecov](https://codecov.io/gh/GerbilSoft/rom-properties/graph/badge.svg?token=oIiL6oVPwZ)](https://codecov.io/gh/GerbilSoft/rom-properties)
 
-## v2.5
+## v2.5.1
 
 ![KDE Dolphin showing J2ME packages.](doc/img/rp-v2.5-kde6.J2ME.png)
 
+v2.5.1 is a bugfix release with no significant new features.
+
 Major additions in v2.5 include:
 
 * J2ME packages
@@ -37,7 +39,7 @@ language, check out the [Crowdin project](https://crowdin.com/project/rom-proper
 Crowdin project page, file an issue here on GitHub with the requested
 language.)
 
-See [`NEWS.md`](NEWS.md) for a full list of changes in v2.5.
+See [`NEWS.md`](NEWS.md) for a full list of changes in v2.5.1.
 
 ## Feedback
 

appveyor.yml

@@ -1,5 +1,5 @@
 # AppVeyor configuration file.
-version: '2.5.0.{build}'
+version: '2.5.1.{build}'
 
 # Build worker image (VM template)
 image:

cmake/libs/CheckPugiXML.cmake

@@ -17,7 +17,13 @@ IF(NOT USE_INTERNAL_XML)
 		# Found system PugiXML.
 		SET(HAVE_XML 1)
 		# NOTE: PugiXML's CMake configuration files don't set pugixml_LIBRARY.
-		SET(pugixml_LIBRARY pugixml::pugixml CACHE INTERNAL "PugiXML library" FORCE)
+		IF(TARGET pugixml::pugixml)
+			SET(pugixml_LIBRARY pugixml::pugixml CACHE INTERNAL "PugiXML library" FORCE)
+		ELSEIF(TARGET pugixml)
+			SET(pugixml_LIBRARY pugixml CACHE INTERNAL "PugiXML library" FORCE)
+		ELSE()
+			MESSAGE(FATAL_ERROR "Unable to find the correct PugiXML target.")
+		ENDIF()
 	ELSE()
 		# System PugiXML was not found.
 		# NOTE: Some older versions, e.g. 1.7-2 (Ubuntu 16.04), lack both

cmake/macros/CPUInstructionSetFlags.cmake

@@ -111,9 +111,15 @@ IF(CPU_i386 OR CPU_amd64)
 	ENDIF()
 ENDIF(CPU_i386 OR CPU_amd64)
 
-IF(CPU_arm OR CPU_arm64 OR CPU_arm64ec)
+# FIXME: NEON on Ubuntu armhf is complaining when using LTO.
+# Disable NEON on armhf for now, except for MSVC.
+IF((CPU_arm AND MSVC) OR CPU_arm64 OR CPU_arm64ec)
 	# Check for arm_neon.h.
 	# NOTE: Should always be present for arm64, but check anyway.
 	INCLUDE(CheckIncludeFile)
 	CHECK_INCLUDE_FILE("arm_neon.h" HAVE_ARM_NEON_H)
-ENDIF(CPU_arm OR CPU_arm64 OR CPU_arm64ec)
+
+	IF(CPU_arm AND NOT MSVC)
+		SET(NEON_FLAG "-marm -mfpu=neon")
+	ENDIF(CPU_arm AND NOT MSVC)
+ENDIF((CPU_arm AND MSVC) OR CPU_arm64 OR CPU_arm64ec)

cmake/options.cmake

@@ -1,5 +1,7 @@
 # Build options.
 
+OPTION(ENABLE_WERROR "Treat all compile warnings as errors. (Enable for development!)" OFF)
+
 # Platform options.
 # NOTE: If a platform is specified but it isn't found,
 # that plugin will not be built. There doesn't seem to

cmake/platform/gcc.cmake

@@ -219,12 +219,12 @@ IF(UNIX AND NOT APPLE)
 				SET(TMP_HAVE_DT_RELR FALSE)
 				MESSAGE(STATUS "Checking if the system supports DT_RELR - no, needs glibc-2.36 or later")
 			ENDIF()
-			UNSET(TMP_HAVE_DT_RELR)
 		ELSE(_ld_out MATCHES "-z pack-relative-relocs")
 			SET(TMP_HAVE_DT_RELR FALSE)
 			MESSAGE(STATUS "Checking if the system supports DT_RELR - no, needs binutils-2.38 or later")
 		ENDIF(_ld_out MATCHES "-z pack-relative-relocs")
 		SET(HAVE_DT_RELR ${TMP_HAVE_DT_RELR} CACHE INTERNAL "System supports DT_RELR")
+		UNSET(TMP_HAVE_DT_RELR)
 	ENDIF(NOT DEFINED HAVE_DT_RELR)
 
 	IF(HAVE_DT_RELR)
@@ -274,20 +274,23 @@ IF(CFLAG_OPTIMIZE_FTREE_VECTORIZE)
 ENDIF(CFLAG_OPTIMIZE_FTREE_VECTORIZE)
 
 # Add "-Werror" *after* checking for everything else.
-SET(RP_C_FLAGS_COMMON   "${RP_C_FLAGS_COMMON} -Werror")
-SET(RP_CXX_FLAGS_COMMON "${RP_CXX_FLAGS_COMMON} -Werror")
-SET(CFLAGS_WNO_ERROR -Wno-error=unknown-pragmas -Wno-error=address -Wno-error=attributes -Wno-error=unused-parameter -Wno-error=unused-but-set-variable -Wno-error=ignored-qualifiers -Wno-error=missing-field-initializers -Wno-error=unused-variable -Wno-error=unused-function -Wno-error=type-limits -Wno-error=empty-body -Wno-error=address-of-packed-member -Wno-error=shift-negative-value -Wno-error=clobbered -Wno-error=overloaded-virtual -Wno-error=header-hygiene)
-FOREACH(FLAG_TEST ${CFLAGS_WNO_ERROR})
-	# CMake doesn't like certain characters in variable names.
-	STRING(REGEX REPLACE "/|:|=" "_" FLAG_TEST_VARNAME "${FLAG_TEST}")
+IF(ENABLE_WERROR)
+	SET(RP_C_FLAGS_COMMON   "${RP_C_FLAGS_COMMON} -Werror")
+	SET(RP_CXX_FLAGS_COMMON "${RP_CXX_FLAGS_COMMON} -Werror")
 
-	CHECK_C_COMPILER_FLAG("${FLAG_TEST}" CFLAG_${FLAG_TEST_VARNAME})
-	IF(CFLAG_${FLAG_TEST_VARNAME})
-		SET(RP_C_FLAGS_COMMON   "${RP_C_FLAGS_COMMON} ${FLAG_TEST}")
-		SET(RP_CXX_FLAGS_COMMON "${RP_CXX_FLAGS_COMMON} ${FLAG_TEST}")
-	ENDIF(CFLAG_${FLAG_TEST_VARNAME})
-	UNSET(CFLAG_${FLAG_TEST_VARNAME})
-ENDFOREACH(FLAG_TEST)
+	SET(CFLAGS_WNO_ERROR -Wno-error=unknown-pragmas -Wno-error=address -Wno-error=attributes -Wno-error=unused-parameter -Wno-error=unused-but-set-variable -Wno-error=ignored-qualifiers -Wno-error=missing-field-initializers -Wno-error=unused-variable -Wno-error=unused-function -Wno-error=type-limits -Wno-error=empty-body -Wno-error=address-of-packed-member -Wno-error=shift-negative-value -Wno-error=clobbered -Wno-error=overloaded-virtual -Wno-error=header-hygiene -Wno-error=cast-align -Wno-error=stringop-overread)
+	FOREACH(FLAG_TEST ${CFLAGS_WNO_ERROR})
+		# CMake doesn't like certain characters in variable names.
+		STRING(REGEX REPLACE "/|:|=" "_" FLAG_TEST_VARNAME "${FLAG_TEST}")
+
+		CHECK_C_COMPILER_FLAG("${FLAG_TEST}" CFLAG_${FLAG_TEST_VARNAME})
+		IF(CFLAG_${FLAG_TEST_VARNAME})
+			SET(RP_C_FLAGS_COMMON   "${RP_C_FLAGS_COMMON} ${FLAG_TEST}")
+			SET(RP_CXX_FLAGS_COMMON "${RP_CXX_FLAGS_COMMON} ${FLAG_TEST}")
+		ENDIF(CFLAG_${FLAG_TEST_VARNAME})
+		UNSET(CFLAG_${FLAG_TEST_VARNAME})
+	ENDFOREACH(FLAG_TEST)
+ENDIF(ENABLE_WERROR)
 
 ### Debug/Release flags ###
 
@@ -300,10 +303,24 @@ SET(RP_CXX_FLAGS_RELEASE	"-O2 -DNDEBUG ${CFLAGS_VECTORIZE}")
 SET(RP_C_FLAGS_RELWITHDEBINFO	"-O2 -ggdb -DNDEBUG ${CFLAGS_VECTORIZE}")
 SET(RP_CXX_FLAGS_RELWITHDEBINFO	"-O2 -ggdb -DNDEBUG ${CFLAGS_VECTORIZE}")
 
-# Enable C++ assertions. (libstdc++ / libc++)
-# Also enable C++ debug mode. (libstdc++ only)
-# TODO: Only enable GLIBCXX for libstdc++, and LIBCPP for libc++.
-SET(RP_CXX_FLAGS_DEBUG "${RP_CXX_FLAGS_DEBUG} -D_GLIBCXX_ASSERTIONS -D_GLIBCXX_DEBUG -D_GLIBCXX_DEBUG_PEDANTIC -D_LIBCPP_ENABLE_ASSERTIONS -D_LIBCPP_ENABLE_HARDENED_MODE")
+# Enable C++ assertions and other hardening options. (libstdc++ / libc++)
+# TODO: Check for the actual C++ runtime being used instead of
+# assuming libc++ is only used with Clang.
+SET(RP_CXX_FLAGS_DEBUG "${RP_CXX_FLAGS_DEBUG} -D_GLIBCXX_ASSERTIONS -D_GLIBCXX_DEBUG -D_GLIBCXX_DEBUG_PEDANTIC")
+
+# libc++ (clang only)
+IF(CMAKE_CXX_COMPILER_ID STREQUAL "Clang")
+	SET(RP_CXX_FLAGS_DEBUG "${RP_CXX_FLAGS_DEBUG} -D_LIBCPP_ASSERT=1 -D_LIBCPP_DEBUG=1 -D_LIBCPP_ENABLE_HARDENED_MODE=1")
+
+	IF(CMAKE_CXX_COMPILER_VERSION VERSION_GREATER 16.50)
+		# clang-17: Use _LIBCPP_HARDENING_MODE.
+		SET(RP_CXX_FLAGS_DEBUG "${RP_CXX_FLAGS_DEBUG} -D_LIBCPP_HARDENING_MODE=_LIBCPP_HARDENING_MODE_DEBUG")
+	ELSE(CMAKE_CXX_COMPILER_VERSION VERSION_GREATER 16.50)
+		# clang-16 or earlier: Use _LIBCPP_ENABLE_ASSERTIONS.
+		# NOTE: _LIBCPP_ENABLE_ASSERTIONS causes an error if using clang-17 or later.
+		SET(RP_CXX_FLAGS_DEBUG "${RP_CXX_FLAGS_DEBUG} -D_LIBCPP_ENABLE_ASSERTIONS=1")
+	ENDIF(CMAKE_CXX_COMPILER_VERSION VERSION_GREATER 16.50)
+ENDIF(CMAKE_CXX_COMPILER_ID STREQUAL "Clang")
 
 # Unset temporary variables.
 UNSET(CFLAG_OPTIMIZE_DEBUG)

cmake/platform/msvc.cmake

@@ -23,8 +23,12 @@ ENDIF(NOT CMAKE_SYSTEM_VERSION)
 # - C4024: 'function': different types for formal and actual parameter n
 # - C4047: 'function': 'parameter' differs in levels of indirection from 'argument'
 # - C4477: 'function' : format string 'string' requires an argument of type 'type', but variadic argument number has type 'type'
-SET(RP_C_FLAGS_COMMON "/nologo /W3 /WX /wd4005 /wd4091 /wd4355 /wd4503 /wd4800 /we4013 /we4024 /we4047 /we4477")
-SET(RP_CXX_FLAGS_COMMON "${RP_C_FLAGS_COMMON} -D_SILENCE_TR1_NAMESPACE_DEPRECATION_WARNING")
+SET(RP_C_FLAGS_COMMON "/nologo /W3")
+IF(ENABLE_WERROR)
+	SET(RP_C_FLAGS_COMMON "${RP_C_FLAGS_COMMON} /WX")
+ENDIF(ENABLE_WERROR)
+SET(RP_C_FLAGS_COMMON "${RP_C_FLAGS_COMMON} /wd4005 /wd4091 /wd4355 /wd4503 /wd4800 /we4013 /we4024 /we4047 /we4477")
+SET(RP_CXX_FLAGS_COMMON "${RP_C_FLAGS_COMMON}")
 ADD_DEFINITIONS(-D_CRT_SECURE_NO_WARNINGS -D_CRT_SECURE_NO_DEPRECATE -D_CRT_NONSTDC_NO_DEPRECATE -D_SCL_SECURE_NO_WARNINGS)
 # NOTE: /TSAWARE is automatically set for Windows 2000 and later. (as of at least Visual Studio .NET 2003)
 # NOTE 2: /TSAWARE is not applicable for DLLs.

debian/changelog

@@ -1,3 +1,17 @@
+rom-properties (2.5.1-1ppa1~xenial2) xenial; urgency=medium
+
+  * Explicitly specify the Tracker API version.
+
+    NOTE: This must be updated for each Ubuntu version!
+
+ -- David Korth <gerbilsoft@gerbilsoft.com>  Sat, 10 May 2025 16:52:48 -0400
+
+rom-properties (2.5.1-1ppa1~xenial1) xenial; urgency=medium
+
+  * 2.5.1 release.
+
+ -- David Korth <gerbilsoft@gerbilsoft.com>  Sat, 10 May 2025 15:29:49 -0400
+
 rom-properties (2.5-1ppa5~xenial4) xenial; urgency=medium
 
   * 2.5 release.

debian/control

@@ -42,7 +42,7 @@ Vcs-Browser: https://github.com/GerbilSoft/rom-properties
 
 Package: rom-properties-all
 Architecture: any
-Depends: ${misc:Depends}, libromdata6, rom-properties-kde4, rom-properties-kf5, rom-properties-xfce, rom-properties-gtk3, rom-properties-cli, rom-properties-tracker, rom-properties-utils, rom-properties-lang, rom-properties-thumbnailer-dbus
+Depends: ${misc:Depends}, libromdata7, rom-properties-kde4, rom-properties-kf5, rom-properties-xfce, rom-properties-gtk3, rom-properties-cli, rom-properties-tracker, rom-properties-utils, rom-properties-lang, rom-properties-thumbnailer-dbus
 Description: ROM Properties Page shell extension (meta package)
  This shell extension provides thumbnailing and property page functionality
  for ROM images, disc images, and save files for various game consoles,
@@ -50,9 +50,9 @@ Description: ROM Properties Page shell extension (meta package)
  .
  This is a meta-package that installs all rom-properties packages.
 
-Package: libromdata6
+Package: libromdata7
 Architecture: any
-Depends: ${shlibs:Depends}, ${misc:Depends}, rom-properties-data
+Depends: ${shlibs:Depends}, ${misc:Depends}, rom-properties-data, liblz4-1, liblzo2-2
 Description: ROM Properties Page shell extension (shared library)
  This shell extension provides thumbnailing and property page functionality
  for ROM images, disc images, and save files for various game consoles,
@@ -63,7 +63,7 @@ Description: ROM Properties Page shell extension (shared library)
 
 Package: rom-properties-kde4
 Architecture: any
-Depends: ${shlibs:Depends}, ${misc:Depends}, libromdata6, rom-properties-utils, rom-properties-xdg
+Depends: ${shlibs:Depends}, ${misc:Depends}, libromdata7, rom-properties-utils, rom-properties-xdg
 Recommends: rom-properties-lang
 Description: ROM Properties Page shell extension (KDE4 UI frontend)
  This shell extension provides thumbnailing and property page functionality
@@ -74,7 +74,7 @@ Description: ROM Properties Page shell extension (KDE4 UI frontend)
 
 Package: rom-properties-kio-servicemenus
 Architecture: all
-Depends: ${shlibs:Depends}, ${misc:Depends}, libromdata6, rom-properties-utils
+Depends: ${shlibs:Depends}, ${misc:Depends}, libromdata7, rom-properties-utils
 Conflicts: rom-properties-kf5 (<< 2.3)
 Replaces: rom-properties-kf5 (<< 2.3)
 Description: ROM Properties Page shell extension (KF5/KF6 service menus)
@@ -86,7 +86,7 @@ Description: ROM Properties Page shell extension (KF5/KF6 service menus)
 
 Package: rom-properties-kf5
 Architecture: any
-Depends: ${shlibs:Depends}, ${misc:Depends}, libromdata6, rom-properties-utils, rom-properties-xdg, rom-properties-kio-servicemenus
+Depends: ${shlibs:Depends}, ${misc:Depends}, libromdata7, rom-properties-utils, rom-properties-xdg, rom-properties-kio-servicemenus
 Recommends: rom-properties-lang
 Conflicts: rom-properties-kde5
 Replaces: rom-properties-kde5
@@ -99,7 +99,7 @@ Description: ROM Properties Page shell extension (KF5 UI frontend)
 
 Package: rom-properties-xfce
 Architecture: any
-Depends: ${shlibs:Depends}, ${misc:Depends}, libromdata6, rom-properties-utils, rom-properties-xdg, rom-properties-thumbnailer-dbus
+Depends: ${shlibs:Depends}, ${misc:Depends}, libromdata7, rom-properties-utils, rom-properties-xdg, rom-properties-thumbnailer-dbus
 Recommends: rom-properties-lang, rom-properties-tracker
 Description: ROM Properties Page shell extension (GTK2 XFCE UI frontend)
  This shell extension provides thumbnailing and property page functionality
@@ -113,7 +113,7 @@ Description: ROM Properties Page shell extension (GTK2 XFCE UI frontend)
 
 Package: rom-properties-gtk3
 Architecture: any
-Depends: ${shlibs:Depends}, ${misc:Depends}, libromdata6, rom-properties-utils, rom-properties-xdg, rom-properties-thumbnailer-dbus
+Depends: ${shlibs:Depends}, ${misc:Depends}, libromdata7, rom-properties-utils, rom-properties-xdg, rom-properties-thumbnailer-dbus
 Recommends: rom-properties-lang, rom-properties-tracker
 Conflicts: rom-properties-gnome, rom-properties-mate, rom-properties-cinnamon, rom-properties-gtk3-common
 Replaces: rom-properties-gnome, rom-properties-mate, rom-properties-cinnamon, rom-properties-gtk3-common
@@ -132,7 +132,7 @@ Description: ROM Properties Page shell extension (GTK3 UI frontend)
 
 Package: rom-properties-cli
 Architecture: any
-Depends: ${shlibs:Depends}, ${misc:Depends}, libromdata6
+Depends: ${shlibs:Depends}, ${misc:Depends}, libromdata7
 Recommends: rom-properties-lang
 Description: ROM Properties Page shell extension (command line version)
  This shell extension provides thumbnailing and property page functionality
@@ -143,7 +143,7 @@ Description: ROM Properties Page shell extension (command line version)
 
 Package: rom-properties-tracker
 Architecture: any
-Depends: ${shlibs:Depends}, ${misc:Depends}, libromdata6
+Depends: ${shlibs:Depends}, ${misc:Depends}, libromdata7
 Description: ROM Properties Page shell extension (Tracker metadata extractor module)
  This shell extension provides thumbnailing and property page functionality
  for ROM images, disc images, and save files for various game consoles,

extlib/CMakeLists.txt

@@ -189,12 +189,14 @@ SET(USE_INTERNAL_MINIZIP TRUE PARENT_SCOPE)
 SET(SKIP_INSTALL_HDR ON)
 IF(WIN32)
 	SET(USE_INTERNAL_MINIZIP_DLL TRUE PARENT_SCOPE)
+	SET(SKIP_INSTALL_BINARIES ON)
 	SET(SKIP_INSTALL_LIBRARIES OFF)
 	SET(SKIP_INSTALL_ALL OFF)
 	SET(BUILD_SHARED_LIBS ON)
 	SET(BUILD_STATIC_LIBS OFF)
 ELSE()
 	UNSET(USE_INTERNAL_MINIZIP_DLL PARENT_SCOPE)
+	SET(SKIP_INSTALL_BINARIES ON)
 	SET(SKIP_INSTALL_LIBRARIES ON)
 	SET(SKIP_INSTALL_ALL ON)
 	SET(BUILD_SHARED_LIBS OFF)
@@ -269,10 +271,10 @@ IF(USE_INTERNAL_XML)
 	SET(PUGIXML_COMPACT OFF)
 	SET(PUGIXML_INSTALL ON)
 
-	# TODO: Investigate these.
-	SET(PUGIXML_NO_XPATH OFF)
-	SET(PUGIXML_NO_STL OFF)
-	SET(PUGIXML_NO_EXCEPTIONS OFF)
+	# Disable functionality we don't need.
+	SET(PUGIXML_NO_XPATH ON)
+	SET(PUGIXML_NO_STL ON)
+	SET(PUGIXML_NO_EXCEPTIONS ON)
 
 	# Build PugiXML.
 	ADD_SUBDIRECTORY(pugixml)

extlib/fmt/.clang-format

@@ -7,6 +7,7 @@ IndentCaseLabels: false
 AlwaysBreakTemplateDeclarations: false
 DerivePointerAlignment: false
 AllowShortCaseLabelsOnASingleLine: true
+QualifierAlignment: Left
 AlignConsecutiveShortCaseStatements:
   Enabled: true
   AcrossEmptyLines: true

extlib/fmt/CMakeLists.txt

@@ -244,8 +244,7 @@ if (NOT CMAKE_RUNTIME_OUTPUT_DIRECTORY)
   set(CMAKE_RUNTIME_OUTPUT_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}/bin)
 endif ()
 
-set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH}
-  "${CMAKE_CURRENT_SOURCE_DIR}/support/cmake")
+list(APPEND CMAKE_MODULE_PATH "${CMAKE_CURRENT_SOURCE_DIR}/support/cmake")
 
 include(CheckCXXCompilerFlag)
 include(JoinPaths)

extlib/fmt/ChangeLog.md

@@ -1,3 +1,103 @@
+# 11.2.0 - 2025-05-03
+
+- Added the `s` specifier for `std::error_code`. It allows formatting an error
+  message as a string. For example:
+
+  ```c++
+  #include <fmt/std.h>
+
+  int main() {
+    auto ec = std::make_error_code(std::errc::no_such_file_or_directory);
+    fmt::print("{:s}\n", ec);
+  }
+  ```
+
+  prints
+
+  ```
+  No such file or directory
+  ```
+  (The actual message is platform-specific.)
+
+- Fixed formatting of `std::chrono::local_time` and `tm`
+  (https://github.com/fmtlib/fmt/issues/3815,
+  https://github.com/fmtlib/fmt/issues/4350).
+  For example ([godbolt](https://www.godbolt.org/z/8o4b1PPn5)):
+
+  ```c++
+  #include <fmt/chrono.h>
+
+  int main() {
+    std::chrono::zoned_time zt(
+      std::chrono::current_zone(),
+      std::chrono::system_clock::now());
+    fmt::print("{}", zt.get_local_time());
+  }
+  ```
+
+  is now formatted consistenly across platforms.
+
+- Added diagnostics for cases when timezone information is not available.
+  For example:
+
+  ```c++
+  fmt::print("{:Z}", std::chrono::local_seconds());
+  ```
+
+  now gives a compile-time error.
+
+- Deprecated `fmt::localtime` in favor of `std::localtime`.
+
+- Fixed compilation with GCC 15 and C++20 modules enabled
+  (https://github.com/fmtlib/fmt/pull/4347). Thanks @tkhyn.
+
+- Fixed handling of named arguments in format specs
+  (https://github.com/fmtlib/fmt/issues/4360,
+  https://github.com/fmtlib/fmt/pull/4361). Thanks @dinomight.
+
+- Added error reporting for duplicate named arguments
+  (https://github.com/fmtlib/fmt/pull/4367). Thanks @dinomight.
+
+- Fixed formatting of `long` with `FMT_BUILTIN_TYPES=0`
+  (https://github.com/fmtlib/fmt/issues/4375,
+  https://github.com/fmtlib/fmt/issues/4394).
+
+- Optimized `text_style` using bit packing
+  (https://github.com/fmtlib/fmt/pull/4363). Thanks @LocalSpook.
+
+- Added support for incomplete types (https://github.com/fmtlib/fmt/issues/3180,
+  https://github.com/fmtlib/fmt/pull/4383). Thanks @LocalSpook.
+
+- Fixed a flush issue in `fmt::print` when using libstdc++
+  (https://github.com/fmtlib/fmt/issues/4398).
+
+- Fixed `fmt::println` usage with `FMT_ENFORCE_COMPILE_STRING` and legacy
+  compile-time checks (https://github.com/fmtlib/fmt/pull/4407).
+  Thanks @madmaxoft.
+
+- Removed legacy header `fmt/core.h` from docs
+  (https://github.com/fmtlib/fmt/pull/4421,
+  https://github.com/fmtlib/fmt/pull/4422). Thanks @krzysztofkortas.
+
+- Worked around limitations of `__builtin_strlen` during constant evaluation
+  (https://github.com/fmtlib/fmt/issues/4423,
+  https://github.com/fmtlib/fmt/pull/4429). Thanks @BRevzin.
+
+- Worked around a bug in MSVC v141 (https://github.com/fmtlib/fmt/issues/4412,
+  https://github.com/fmtlib/fmt/pull/4413). Thanks @hirohira9119.
+
+- Removed the `fmt_detail` namespace
+  (https://github.com/fmtlib/fmt/issues/4324).
+
+- Removed specializations of `std::is_floating_point` in tests
+  (https://github.com/fmtlib/fmt/issues/4417).
+
+- Fixed a CMake error when setting `CMAKE_MODULE_PATH` in the pedantic mode
+  (https://github.com/fmtlib/fmt/pull/4426). Thanks @rlalik.
+
+- Updated the Bazel config (https://github.com/fmtlib/fmt/pull/4400).
+  Thanks @Vertexwahn.
+
 # 11.1.4 - 2025-02-26
 
 - Fixed ABI compatibility with earlier 11.x versions on Windows

extlib/fmt/README.md

@@ -47,7 +47,7 @@ Try {fmt} in [Compiler Explorer](https://godbolt.org/z/8Mx1EW73v).
   hundred million integers to strings per
   second](http://www.zverovich.net/2020/06/13/fast-int-to-string-revisited.html)
 - Small code size both in terms of source code with the minimum
-  configuration consisting of just three files, `core.h`, `format.h`
+  configuration consisting of just three files, `base.h`, `format.h`
   and `format-inl.h`, and compiled code; see [Compile time and code
   bloat](#compile-time-and-code-bloat)
 - Reliability: the library has an extensive set of
@@ -74,7 +74,7 @@ See the [documentation](https://fmt.dev) for more details.
 **Print to stdout** ([run](https://godbolt.org/z/Tevcjh))
 
 ``` c++
-#include <fmt/core.h>
+#include <fmt/base.h>
 
 int main() {
   fmt::print("Hello, world!\n");

extlib/fmt/_MODIFIED_LIBFMT.txt

@@ -1,13 +1,13 @@
-This copy of libfmt 11.1.4 is a modified version of the original.
+This copy of libfmt 11.2.0 is a modified version of the original.
 
-commit 123913715afeb8a437e6388b4473fcc4753e1c9a
+commit 40626af88bd7df9a5fb80be7b25ac85b122d6c21
 Update version
     
-Tag: 11.1.4
+Tag: 11.2.0
 
 The following changes have been made to the original:
 
 - Removed documentation and test suites.
 
-To obtain the original libfmt-11.1.4, visit:
+To obtain the original libfmt-11.2.0, visit:
 https://github.com/fmtlib/fmt

extlib/fmt/doc/api.md

@@ -220,7 +220,7 @@ You can also write a formatter for a hierarchy of classes:
 ```c++
 // demo.h:
 #include <type_traits>
-#include <fmt/core.h>
+#include <fmt/format.h>
 
 struct A {
   virtual ~A() {}
@@ -403,7 +403,7 @@ All formatting is locale-independent by default. Use the `'L'` format
 specifier to insert the appropriate number separator characters from the
 locale:
 
-    #include <fmt/core.h>
+    #include <fmt/format.h>
     #include <locale>
 
     std::locale::global(std::locale("en_US.UTF-8"));
@@ -473,9 +473,9 @@ chrono-format-specifications).
     #include <fmt/chrono.h>
 
     int main() {
-      std::time_t t = std::time(nullptr);
+      auto now = std::chrono::system_clock::now();
 
-      fmt::print("The date is {:%Y-%m-%d}.", fmt::localtime(t));
+      fmt::print("The date is {:%Y-%m-%d}.\n", now);
       // Output: The date is 2020-11-07.
       // (with 2020-11-07 replaced by the current date)
 
@@ -488,8 +488,6 @@ chrono-format-specifications).
       // Output: strftime-like format: 03:15:30
     }
 
-::: localtime(std::time_t)
-
 ::: gmtime(std::time_t)
 
 <a id="std-api"></a>
@@ -580,7 +578,7 @@ performance bottleneck.
 
 `fmt/color.h` provides support for terminal color and text style output.
 
-::: print(const text_style&, format_string<T...>, T&&...)
+::: print(text_style, format_string<T...>, T&&...)
 
 ::: fg(detail::color_type)
 

extlib/fmt/doc/index.md

@@ -122,7 +122,7 @@ hide:
 </p>
 <p>
   The library is highly portable and requires only a minimal <b>subset of
-  C++11</b> features which are available in GCC 4.9, Clang 3.4, MSVC 19.10
+  C++11</b> features which are available in GCC 4.9, Clang 3.6, MSVC 19.10
   (2017) and later. Newer compiler and standard library features are used
   if available, and enable additional functionality.
 </p>

extlib/fmt/include/fmt/base.h

@@ -21,7 +21,7 @@
 #endif
 
 // The fmt library version in the form major * 10000 + minor * 100 + patch.
-#define FMT_VERSION 110104
+#define FMT_VERSION 110200
 
 // Detect compiler versions.
 #if defined(__clang__) && !defined(__ibmxl__)
@@ -209,20 +209,6 @@
 #  define FMT_DEPRECATED /* deprecated */
 #endif
 
-#ifdef FMT_ALWAYS_INLINE
-// Use the provided definition.
-#elif FMT_GCC_VERSION || FMT_CLANG_VERSION
-#  define FMT_ALWAYS_INLINE inline __attribute__((always_inline))
-#else
-#  define FMT_ALWAYS_INLINE inline
-#endif
-// A version of FMT_ALWAYS_INLINE to prevent code bloat in debug mode.
-#ifdef NDEBUG
-#  define FMT_INLINE FMT_ALWAYS_INLINE
-#else
-#  define FMT_INLINE inline
-#endif
-
 #if FMT_GCC_VERSION || FMT_CLANG_VERSION
 #  define FMT_VISIBILITY(value) __attribute__((visibility(value)))
 #else
@@ -249,6 +235,28 @@
 #  define FMT_MSC_WARNING(...)
 #endif
 
+// Enable minimal optimizations for more compact code in debug mode.
+FMT_PRAGMA_GCC(push_options)
+#if !defined(__OPTIMIZE__) && !defined(__CUDACC__) && !defined(FMT_MODULE)
+FMT_PRAGMA_GCC(optimize("Og"))
+#  define FMT_GCC_OPTIMIZED
+#endif
+FMT_PRAGMA_CLANG(diagnostic push)
+
+#ifdef FMT_ALWAYS_INLINE
+// Use the provided definition.
+#elif FMT_GCC_VERSION || FMT_CLANG_VERSION
+#  define FMT_ALWAYS_INLINE inline __attribute__((always_inline))
+#else
+#  define FMT_ALWAYS_INLINE inline
+#endif
+// A version of FMT_ALWAYS_INLINE to prevent code bloat in debug mode.
+#if defined(NDEBUG) || defined(FMT_GCC_OPTIMIZED)
+#  define FMT_INLINE FMT_ALWAYS_INLINE
+#else
+#  define FMT_INLINE inline
+#endif
+
 #ifndef FMT_BEGIN_NAMESPACE
 #  define FMT_BEGIN_NAMESPACE \
     namespace fmt {           \
@@ -297,13 +305,6 @@
   using unused = int[];          \
   (void)unused { 0, (expr, 0)... }
 
-// Enable minimal optimizations for more compact code in debug mode.
-FMT_PRAGMA_GCC(push_options)
-#if !defined(__OPTIMIZE__) && !defined(__CUDACC__) && !defined(FMT_MODULE)
-FMT_PRAGMA_GCC(optimize("Og"))
-#endif
-FMT_PRAGMA_CLANG(diagnostic push)
-
 FMT_BEGIN_NAMESPACE
 
 // Implementations of enable_if_t and other metafunctions for older systems.
@@ -325,8 +326,8 @@ using underlying_t = typename std::underlying_type<T>::type;
 template <typename T> using decay_t = typename std::decay<T>::type;
 using nullptr_t = decltype(nullptr);
 
-#if FMT_GCC_VERSION && FMT_GCC_VERSION < 500
-// A workaround for gcc 4.9 to make void_t work in a SFINAE context.
+#if (FMT_GCC_VERSION && FMT_GCC_VERSION < 500) || FMT_MSC_VERSION
+// A workaround for gcc 4.9 & MSVC v141 to make void_t work in a SFINAE context.
 template <typename...> struct void_t_impl {
   using type = void;
 };
@@ -526,20 +527,20 @@ template <typename Char> class basic_string_view {
 
   constexpr basic_string_view() noexcept : data_(nullptr), size_(0) {}
 
-  /// Constructs a string reference object from a C string and a size.
+  /// Constructs a string view object from a C string and a size.
   constexpr basic_string_view(const Char* s, size_t count) noexcept
       : data_(s), size_(count) {}
 
   constexpr basic_string_view(nullptr_t) = delete;
 
-  /// Constructs a string reference object from a C string.
+  /// Constructs a string view object from a C string.
 #if FMT_GCC_VERSION
   FMT_ALWAYS_INLINE
 #endif
   FMT_CONSTEXPR20 basic_string_view(const Char* s) : data_(s) {
 #if FMT_HAS_BUILTIN(__builtin_strlen) || FMT_GCC_VERSION || FMT_CLANG_VERSION
-    if (std::is_same<Char, char>::value) {
-      size_ = __builtin_strlen(detail::narrow(s));
+    if (std::is_same<Char, char>::value && !detail::is_constant_evaluated()) {
+      size_ = __builtin_strlen(detail::narrow(s));  // strlen is not costexpr.
       return;
     }
 #endif
@@ -548,7 +549,7 @@ template <typename Char> class basic_string_view {
     size_ = len;
   }
 
-  /// Constructs a string reference from a `std::basic_string` or a
+  /// Constructs a string view from a `std::basic_string` or a
   /// `std::basic_string_view` object.
   template <typename S,
             FMT_ENABLE_IF(detail::is_std_string_like<S>::value&& std::is_same<
@@ -585,7 +586,6 @@ template <typename Char> class basic_string_view {
     return starts_with(basic_string_view<Char>(s));
   }
 
-  // Lexicographically compare this string reference to other.
   FMT_CONSTEXPR auto compare(basic_string_view other) const -> int {
     int result =
         detail::compare(data_, other.data_, min_of(size_, other.size_));
@@ -616,7 +616,7 @@ template <typename Char> class basic_string_view {
 
 using string_view = basic_string_view<char>;
 
-/// Specifies if `T` is an extended character type. Can be specialized by users.
+// DEPRECATED! Will be merged with is_char and moved to detail.
 template <typename T> struct is_xchar : std::false_type {};
 template <> struct is_xchar<wchar_t> : std::true_type {};
 template <> struct is_xchar<char16_t> : std::true_type {};
@@ -625,7 +625,7 @@ template <> struct is_xchar<char32_t> : std::true_type {};
 template <> struct is_xchar<char8_t> : std::true_type {};
 #endif
 
-// DEPRECATED! Will be replaced with an alias to prevent specializations.
+// Specifies if `T` is a character (code unit) type.
 template <typename T> struct is_char : is_xchar<T> {};
 template <> struct is_char<char> : std::true_type {};
 
@@ -1032,6 +1032,11 @@ enum {
 
 struct view {};
 
+template <typename T, typename Enable = std::true_type>
+struct is_view : std::false_type {};
+template <typename T>
+struct is_view<T, bool_constant<sizeof(T) != 0>> : std::is_base_of<view, T> {};
+
 template <typename Char, typename T> struct named_arg;
 template <typename T> struct is_named_arg : std::false_type {};
 template <typename T> struct is_static_named_arg : std::false_type {};
@@ -1064,6 +1069,16 @@ template <typename Char> struct named_arg_info {
   int id;
 };
 
+// named_args is non-const to suppress a bogus -Wmaybe-uninitalized in gcc 13.
+template <typename Char>
+FMT_CONSTEXPR void check_for_duplicate(named_arg_info<Char>* named_args,
+                                       int named_arg_index,
+                                       basic_string_view<Char> arg_name) {
+  for (int i = 0; i < named_arg_index; ++i) {
+    if (named_args[i].name == arg_name) report_error("duplicate named arg");
+  }
+}
+
 template <typename Char, typename T, FMT_ENABLE_IF(!is_named_arg<T>::value)>
 void init_named_arg(named_arg_info<Char>*, int& arg_index, int&, const T&) {
   ++arg_index;
@@ -1071,6 +1086,7 @@ void init_named_arg(named_arg_info<Char>*, int& arg_index, int&, const T&) {
 template <typename Char, typename T, FMT_ENABLE_IF(is_named_arg<T>::value)>
 void init_named_arg(named_arg_info<Char>* named_args, int& arg_index,
                     int& named_arg_index, const T& arg) {
+  check_for_duplicate<Char>(named_args, named_arg_index, arg.name);
   named_args[named_arg_index++] = {arg.name, arg_index++};
 }
 
@@ -1084,12 +1100,13 @@ template <typename T, typename Char,
           FMT_ENABLE_IF(is_static_named_arg<T>::value)>
 FMT_CONSTEXPR void init_static_named_arg(named_arg_info<Char>* named_args,
                                          int& arg_index, int& named_arg_index) {
+  check_for_duplicate<Char>(named_args, named_arg_index, T::name);
   named_args[named_arg_index++] = {T::name, arg_index++};
 }
 
 // To minimize the number of types we need to deal with, long is translated
 // either to int or to long long depending on its size.
-enum { long_short = sizeof(long) == sizeof(int) };
+enum { long_short = sizeof(long) == sizeof(int) && FMT_BUILTIN_TYPES };
 using long_type = conditional_t<long_short, int, long long>;
 using ulong_type = conditional_t<long_short, unsigned, unsigned long long>;
 
@@ -1706,7 +1723,17 @@ class format_string_checker {
       -> const Char* {
     context_.advance_to(begin);
     if (id >= 0 && id < NUM_ARGS) return parse_funcs_[id](context_);
-    while (begin != end && *begin != '}') ++begin;
+
+    // If id is out of range, it means we do not know the type and cannot parse
+    // the format at compile time. Instead, skip over content until we finish
+    // the format spec, accounting for any nested replacements.
+    for (int bracket_count = 0;
+         begin != end && (bracket_count > 0 || *begin != '}'); ++begin) {
+      if (*begin == '{')
+        ++bracket_count;
+      else if (*begin == '}')
+        --bracket_count;
+    }
     return begin;
   }
 
@@ -2703,7 +2730,7 @@ template <typename... T> struct fstring {
   template <size_t N>
   FMT_CONSTEVAL FMT_ALWAYS_INLINE fstring(const char (&s)[N]) : str(s, N - 1) {
     using namespace detail;
-    static_assert(count<(std::is_base_of<view, remove_reference_t<T>>::value &&
+    static_assert(count<(is_view<remove_cvref_t<T>>::value &&
                          std::is_reference<T>::value)...>() == 0,
                   "passing views as lvalues is disallowed");
     if (FMT_USE_CONSTEVAL) parse_format_string<char>(s, checker(s, arg_pack()));

extlib/fmt/include/fmt/chrono.h

@@ -22,21 +22,6 @@
 
 #include "format.h"
 
-namespace fmt_detail {
-struct time_zone {
-  template <typename Duration, typename T>
-  auto to_sys(T)
-      -> std::chrono::time_point<std::chrono::system_clock, Duration> {
-    return {};
-  }
-};
-template <typename... T> inline auto current_zone(T...) -> time_zone* {
-  return nullptr;
-}
-
-template <typename... T> inline void _tzset(T...) {}
-}  // namespace fmt_detail
-
 FMT_BEGIN_NAMESPACE
 
 // Enable safe chrono durations, unless explicitly disabled.
@@ -435,14 +420,11 @@ auto write(OutputIt out, const std::tm& time, const std::locale& loc,
   return write_encoded_tm_str(out, string_view(buf.data(), buf.size()), loc);
 }
 
-template <typename Rep1, typename Rep2>
-struct is_same_arithmetic_type
-    : public std::integral_constant<bool,
-                                    (std::is_integral<Rep1>::value &&
-                                     std::is_integral<Rep2>::value) ||
-                                        (std::is_floating_point<Rep1>::value &&
-                                         std::is_floating_point<Rep2>::value)> {
-};
+template <typename T, typename U>
+using is_similar_arithmetic_type =
+    bool_constant<(std::is_integral<T>::value && std::is_integral<U>::value) ||
+                  (std::is_floating_point<T>::value &&
+                   std::is_floating_point<U>::value)>;
 
 FMT_NORETURN inline void throw_duration_error() {
   FMT_THROW(format_error("cannot format duration"));
@@ -501,9 +483,9 @@ auto duration_cast(std::chrono::duration<FromRep, FromPeriod> from) -> To {
 #endif
 }
 
-template <
-    typename To, typename FromRep, typename FromPeriod,
-    FMT_ENABLE_IF(!is_same_arithmetic_type<FromRep, typename To::rep>::value)>
+template <typename To, typename FromRep, typename FromPeriod,
+          FMT_ENABLE_IF(
+              !is_similar_arithmetic_type<FromRep, typename To::rep>::value)>
 auto duration_cast(std::chrono::duration<FromRep, FromPeriod> from) -> To {
   // Mixed integer <-> float cast is not supported by safe_duration_cast.
   return std::chrono::duration_cast<To>(from);
@@ -519,12 +501,30 @@ auto to_time_t(sys_time<Duration> time_point) -> std::time_t {
       .count();
 }
 
-// Workaround a bug in libstdc++ which sets __cpp_lib_chrono to 201907 without
-// providing current_zone(): https://github.com/fmtlib/fmt/issues/4160.
-template <typename T> FMT_CONSTEXPR auto has_current_zone() -> bool {
-  using namespace std::chrono;
-  using namespace fmt_detail;
-  return !std::is_same<decltype(current_zone()), fmt_detail::time_zone*>::value;
+namespace tz {
+
+// DEPRECATED!
+struct time_zone {
+  template <typename Duration, typename LocalTime>
+  auto to_sys(LocalTime) -> sys_time<Duration> {
+    return {};
+  }
+};
+template <typename... T> auto current_zone(T...) -> time_zone* {
+  return nullptr;
+}
+
+template <typename... T> void _tzset(T...) {}
+}  // namespace tz
+
+// DEPRECATED!
+inline void tzset_once() {
+  static bool init = []() {
+    using namespace tz;
+    _tzset();
+    return false;
+  }();
+  ignore_unused(init);
 }
 }  // namespace detail
 
@@ -535,7 +535,7 @@ FMT_BEGIN_EXPORT
  * expressed in local time. Unlike `std::localtime`, this function is
  * thread-safe on most platforms.
  */
-inline auto localtime(std::time_t time) -> std::tm {
+FMT_DEPRECATED inline auto localtime(std::time_t time) -> std::tm {
   struct dispatcher {
     std::time_t time_;
     std::tm tm_;
@@ -572,11 +572,11 @@ inline auto localtime(std::time_t time) -> std::tm {
 }
 
 #if FMT_USE_LOCAL_TIME
-template <typename Duration,
-          FMT_ENABLE_IF(detail::has_current_zone<Duration>())>
-inline auto localtime(std::chrono::local_time<Duration> time) -> std::tm {
+template <typename Duration>
+FMT_DEPRECATED auto localtime(std::chrono::local_time<Duration> time)
+    -> std::tm {
   using namespace std::chrono;
-  using namespace fmt_detail;
+  using namespace detail::tz;
   return localtime(detail::to_time_t(current_zone()->to_sys<Duration>(time)));
 }
 #endif
@@ -911,7 +911,14 @@ template <typename Derived> struct null_chrono_spec_handler {
   FMT_CONSTEXPR void on_tz_name() { unsupported(); }
 };
 
-struct tm_format_checker : null_chrono_spec_handler<tm_format_checker> {
+class tm_format_checker : public null_chrono_spec_handler<tm_format_checker> {
+ private:
+  bool has_timezone_ = false;
+
+ public:
+  constexpr explicit tm_format_checker(bool has_timezone)
+      : has_timezone_(has_timezone) {}
+
   FMT_NORETURN inline void unsupported() {
     FMT_THROW(format_error("no format"));
   }
@@ -949,8 +956,12 @@ struct tm_format_checker : null_chrono_spec_handler<tm_format_checker> {
   FMT_CONSTEXPR void on_24_hour_time() {}
   FMT_CONSTEXPR void on_iso_time() {}
   FMT_CONSTEXPR void on_am_pm() {}
-  FMT_CONSTEXPR void on_utc_offset(numeric_system) {}
-  FMT_CONSTEXPR void on_tz_name() {}
+  FMT_CONSTEXPR void on_utc_offset(numeric_system) {
+    if (!has_timezone_) FMT_THROW(format_error("no timezone"));
+  }
+  FMT_CONSTEXPR void on_tz_name() {
+    if (!has_timezone_) FMT_THROW(format_error("no timezone"));
+  }
 };
 
 inline auto tm_wday_full_name(int wday) -> const char* {
@@ -980,24 +991,27 @@ inline auto tm_mon_short_name(int mon) -> const char* {
 }
 
 template <typename T, typename = void>
-struct has_member_data_tm_gmtoff : std::false_type {};
+struct has_tm_gmtoff : std::false_type {};
 template <typename T>
-struct has_member_data_tm_gmtoff<T, void_t<decltype(T::tm_gmtoff)>>
-    : std::true_type {};
+struct has_tm_gmtoff<T, void_t<decltype(T::tm_gmtoff)>> : std::true_type {};
 
-template <typename T, typename = void>
-struct has_member_data_tm_zone : std::false_type {};
+template <typename T, typename = void> struct has_tm_zone : std::false_type {};
 template <typename T>
-struct has_member_data_tm_zone<T, void_t<decltype(T::tm_zone)>>
-    : std::true_type {};
+struct has_tm_zone<T, void_t<decltype(T::tm_zone)>> : std::true_type {};
 
-inline void tzset_once() {
-  static bool init = []() {
-    using namespace fmt_detail;
-    _tzset();
-    return false;
-  }();
-  ignore_unused(init);
+template <typename T, FMT_ENABLE_IF(has_tm_zone<T>::value)>
+bool set_tm_zone(T& time, char* tz) {
+  time.tm_zone = tz;
+  return true;
+}
+template <typename T, FMT_ENABLE_IF(!has_tm_zone<T>::value)>
+bool set_tm_zone(T&, char*) {
+  return false;
+}
+
+inline char* utc() {
+  static char tz[] = "UTC";
+  return tz;
 }
 
 // Converts value to Int and checks that it's in the range [0, upper).
@@ -1005,7 +1019,7 @@ template <typename T, typename Int, FMT_ENABLE_IF(std::is_integral<T>::value)>
 inline auto to_nonnegative_int(T value, Int upper) -> Int {
   if (!std::is_unsigned<Int>::value &&
       (value < 0 || to_unsigned(value) > to_unsigned(upper))) {
-    FMT_THROW(fmt::format_error("chrono value is out of range"));
+    FMT_THROW(format_error("chrono value is out of range"));
   }
   return static_cast<Int>(value);
 }
@@ -1090,7 +1104,7 @@ void write_fractional_seconds(OutputIt& out, Duration d, int precision = -1) {
 
 // Format subseconds which are given as a floating point type with an
 // appropriate number of digits. We cannot pass the Duration here, as we
-// explicitly need to pass the Rep value in the chrono_formatter.
+// explicitly need to pass the Rep value in the duration_formatter.
 template <typename Duration>
 void write_floating_seconds(memory_buffer& buf, Duration duration,
                             int num_fractional_digits = -1) {
@@ -1124,7 +1138,7 @@ class tm_writer {
   static constexpr int days_per_week = 7;
 
   const std::locale& loc_;
-  const bool is_classic_;
+  bool is_classic_;
   OutputIt out_;
   const Duration* subsecs_;
   const std::tm& tm_;
@@ -1160,8 +1174,8 @@ class tm_writer {
   }
 
   auto tm_hour12() const noexcept -> int {
-    const auto h = tm_hour();
-    const auto z = h < 12 ? h : h - 12;
+    auto h = tm_hour();
+    auto z = h < 12 ? h : h - 12;
     return z == 0 ? 12 : z;
   }
 
@@ -1177,11 +1191,11 @@ class tm_writer {
 
   // Algorithm: https://en.wikipedia.org/wiki/ISO_week_date.
   auto iso_year_weeks(long long curr_year) const noexcept -> int {
-    const auto prev_year = curr_year - 1;
-    const auto curr_p =
+    auto prev_year = curr_year - 1;
+    auto curr_p =
         (curr_year + curr_year / 4 - curr_year / 100 + curr_year / 400) %
         days_per_week;
-    const auto prev_p =
+    auto prev_p =
         (prev_year + prev_year / 4 - prev_year / 100 + prev_year / 400) %
         days_per_week;
     return 52 + ((curr_p == 4 || prev_p == 3) ? 1 : 0);
@@ -1191,15 +1205,15 @@ class tm_writer {
            days_per_week;
   }
   auto tm_iso_week_year() const noexcept -> long long {
-    const auto year = tm_year();
-    const auto w = iso_week_num(tm_yday(), tm_wday());
+    auto year = tm_year();
+    auto w = iso_week_num(tm_yday(), tm_wday());
     if (w < 1) return year - 1;
     if (w > iso_year_weeks(year)) return year + 1;
     return year;
   }
   auto tm_iso_week_of_year() const noexcept -> int {
-    const auto year = tm_year();
-    const auto w = iso_week_num(tm_yday(), tm_wday());
+    auto year = tm_year();
+    auto w = iso_week_num(tm_yday(), tm_wday());
     if (w < 1) return iso_year_weeks(year - 1);
     if (w > iso_year_weeks(year)) return 1;
     return w;
@@ -1236,9 +1250,8 @@ class tm_writer {
     uint32_or_64_or_128_t<long long> n = to_unsigned(year);
     const int num_digits = count_digits(n);
     if (negative && pad == pad_type::zero) *out_++ = '-';
-    if (width > num_digits) {
+    if (width > num_digits)
       out_ = detail::write_padding(out_, pad, width - num_digits);
-    }
     if (negative && pad != pad_type::zero) *out_++ = '-';
     out_ = format_decimal<Char>(out_, n, num_digits);
   }
@@ -1259,45 +1272,22 @@ class tm_writer {
     write2(static_cast<int>(offset % 60));
   }
 
-  template <typename T, FMT_ENABLE_IF(has_member_data_tm_gmtoff<T>::value)>
-  void format_utc_offset_impl(const T& tm, numeric_system ns) {
+  template <typename T, FMT_ENABLE_IF(has_tm_gmtoff<T>::value)>
+  void format_utc_offset(const T& tm, numeric_system ns) {
     write_utc_offset(tm.tm_gmtoff, ns);
   }
-  template <typename T, FMT_ENABLE_IF(!has_member_data_tm_gmtoff<T>::value)>
-  void format_utc_offset_impl(const T& tm, numeric_system ns) {
-#if defined(_WIN32) && defined(_UCRT)
-    tzset_once();
-    long offset = 0;
-    _get_timezone(&offset);
-    if (tm.tm_isdst) {
-      long dstbias = 0;
-      _get_dstbias(&dstbias);
-      offset += dstbias;
-    }
-    write_utc_offset(-offset, ns);
-#else
-    if (ns == numeric_system::standard) return format_localized('z');
-
-    // Extract timezone offset from timezone conversion functions.
-    std::tm gtm = tm;
-    std::time_t gt = std::mktime(&gtm);
-    std::tm ltm = gmtime(gt);
-    std::time_t lt = std::mktime(&ltm);
-    long long offset = gt - lt;
-    write_utc_offset(offset, ns);
-#endif
+  template <typename T, FMT_ENABLE_IF(!has_tm_gmtoff<T>::value)>
+  void format_utc_offset(const T&, numeric_system ns) {
+    write_utc_offset(0, ns);
   }
 
-  template <typename T, FMT_ENABLE_IF(has_member_data_tm_zone<T>::value)>
-  void format_tz_name_impl(const T& tm) {
-    if (is_classic_)
-      out_ = write_tm_str<Char>(out_, tm.tm_zone, loc_);
-    else
-      format_localized('Z');
+  template <typename T, FMT_ENABLE_IF(has_tm_zone<T>::value)>
+  void format_tz_name(const T& tm) {
+    out_ = write_tm_str<Char>(out_, tm.tm_zone, loc_);
   }
-  template <typename T, FMT_ENABLE_IF(!has_member_data_tm_zone<T>::value)>
-  void format_tz_name_impl(const T&) {
-    format_localized('Z');
+  template <typename T, FMT_ENABLE_IF(!has_tm_zone<T>::value)>
+  void format_tz_name(const T&) {
+    out_ = std::copy_n(utc(), 3, out_);
   }
 
   void format_localized(char format, char modifier = 0) {
@@ -1408,8 +1398,8 @@ class tm_writer {
     out_ = copy<Char>(std::begin(buf) + offset, std::end(buf), out_);
   }
 
-  void on_utc_offset(numeric_system ns) { format_utc_offset_impl(tm_, ns); }
-  void on_tz_name() { format_tz_name_impl(tm_); }
+  void on_utc_offset(numeric_system ns) { format_utc_offset(tm_, ns); }
+  void on_tz_name() { format_tz_name(tm_); }
 
   void on_year(numeric_system ns, pad_type pad) {
     if (is_classic_ || ns == numeric_system::standard)
@@ -1483,11 +1473,10 @@ class tm_writer {
   void on_day_of_year(pad_type pad) {
     auto yday = tm_yday() + 1;
     auto digit1 = yday / 100;
-    if (digit1 != 0) {
+    if (digit1 != 0)
       write1(digit1);
-    } else {
+    else
       out_ = detail::write_padding(out_, pad);
-    }
     write2(yday % 100, pad);
   }
 
@@ -1624,18 +1613,16 @@ template <typename Rep, typename Period,
           FMT_ENABLE_IF(std::is_integral<Rep>::value)>
 inline auto get_milliseconds(std::chrono::duration<Rep, Period> d)
     -> std::chrono::duration<Rep, std::milli> {
-  // this may overflow and/or the result may not fit in the
-  // target type.
+  // This may overflow and/or the result may not fit in the target type.
 #if FMT_SAFE_DURATION_CAST
-  using CommonSecondsType =
+  using common_seconds_type =
       typename std::common_type<decltype(d), std::chrono::seconds>::type;
-  const auto d_as_common = detail::duration_cast<CommonSecondsType>(d);
-  const auto d_as_whole_seconds =
+  auto d_as_common = detail::duration_cast<common_seconds_type>(d);
+  auto d_as_whole_seconds =
       detail::duration_cast<std::chrono::seconds>(d_as_common);
-  // this conversion should be nonproblematic
-  const auto diff = d_as_common - d_as_whole_seconds;
-  const auto ms =
-      detail::duration_cast<std::chrono::duration<Rep, std::milli>>(diff);
+  // This conversion should be nonproblematic.
+  auto diff = d_as_common - d_as_whole_seconds;
+  auto ms = detail::duration_cast<std::chrono::duration<Rep, std::milli>>(diff);
   return ms;
 #else
   auto s = detail::duration_cast<std::chrono::seconds>(d);
@@ -1707,32 +1694,28 @@ class get_locale {
   }
 };
 
-template <typename FormatContext, typename OutputIt, typename Rep,
-          typename Period>
-struct chrono_formatter {
-  FormatContext& context;
-  OutputIt out;
-  int precision;
-  bool localized = false;
+template <typename Char, typename Rep, typename Period>
+struct duration_formatter {
+  using iterator = basic_appender<Char>;
+  iterator out;
   // rep is unsigned to avoid overflow.
   using rep =
       conditional_t<std::is_integral<Rep>::value && sizeof(Rep) < sizeof(int),
                     unsigned, typename make_unsigned_or_unchanged<Rep>::type>;
   rep val;
+  int precision;
+  locale_ref locale;
+  bool localized = false;
   using seconds = std::chrono::duration<rep>;
   seconds s;
   using milliseconds = std::chrono::duration<rep, std::milli>;
   bool negative;
 
-  using char_type = typename FormatContext::char_type;
-  using tm_writer_type = tm_writer<OutputIt, char_type>;
+  using tm_writer_type = tm_writer<iterator, Char>;
 
-  chrono_formatter(FormatContext& ctx, OutputIt o,
-                   std::chrono::duration<Rep, Period> d)
-      : context(ctx),
-        out(o),
-        val(static_cast<rep>(d.count())),
-        negative(false) {
+  duration_formatter(iterator o, std::chrono::duration<Rep, Period> d,
+                     locale_ref loc)
+      : out(o), val(static_cast<rep>(d.count())), locale(loc), negative(false) {
     if (d.count() < 0) {
       val = 0 - val;
       negative = true;
@@ -1746,19 +1729,16 @@ struct chrono_formatter {
 
   // returns true if nan or inf, writes to out.
   auto handle_nan_inf() -> bool {
-    if (isfinite(val)) {
-      return false;
-    }
+    if (isfinite(val)) return false;
     if (isnan(val)) {
       write_nan();
       return true;
     }
     // must be +-inf
-    if (val > 0) {
-      write_pinf();
-    } else {
-      write_ninf();
-    }
+    if (val > 0)
+      std::copy_n("inf", 3, out);
+    else
+      std::copy_n("-inf", 4, out);
     return true;
   }
 
@@ -1786,10 +1766,9 @@ struct chrono_formatter {
   }
 
   void write_sign() {
-    if (negative) {
-      *out++ = '-';
-      negative = false;
-    }
+    if (!negative) return;
+    *out++ = '-';
+    negative = false;
   }
 
   void write(Rep value, int width, pad_type pad = pad_type::zero) {
@@ -1801,24 +1780,22 @@ struct chrono_formatter {
     if (width > num_digits) {
       out = detail::write_padding(out, pad, width - num_digits);
     }
-    out = format_decimal<char_type>(out, n, num_digits);
+    out = format_decimal<Char>(out, n, num_digits);
   }
 
   void write_nan() { std::copy_n("nan", 3, out); }
-  void write_pinf() { std::copy_n("inf", 3, out); }
-  void write_ninf() { std::copy_n("-inf", 4, out); }
 
   template <typename Callback, typename... Args>
   void format_tm(const tm& time, Callback cb, Args... args) {
     if (isnan(val)) return write_nan();
-    get_locale loc(localized, context.locale());
+    get_locale loc(localized, locale);
     auto w = tm_writer_type(loc, out, time);
     (w.*cb)(args...);
     out = w.out();
   }
 
-  void on_text(const char_type* begin, const char_type* end) {
-    copy<char_type>(begin, end, out);
+  void on_text(const Char* begin, const Char* end) {
+    copy<Char>(begin, end, out);
   }
 
   // These are not implemented because durations don't have date information.
@@ -1888,13 +1865,12 @@ struct chrono_formatter {
         write_floating_seconds(buf, std::chrono::duration<rep, Period>(val),
                                precision);
         if (negative) *out++ = '-';
-        if (buf.size() < 2 || buf[1] == '.') {
+        if (buf.size() < 2 || buf[1] == '.')
           out = detail::write_padding(out, pad);
-        }
-        out = copy<char_type>(buf.begin(), buf.end(), out);
+        out = copy<Char>(buf.begin(), buf.end(), out);
       } else {
         write(second(), 2, pad);
-        write_fractional_seconds<char_type>(
+        write_fractional_seconds<Char>(
             out, std::chrono::duration<rep, Period>(val), precision);
       }
       return;
@@ -1936,12 +1912,10 @@ struct chrono_formatter {
   void on_duration_value() {
     if (handle_nan_inf()) return;
     write_sign();
-    out = format_duration_value<char_type>(out, val, precision);
+    out = format_duration_value<Char>(out, val, precision);
   }
 
-  void on_duration_unit() {
-    out = format_duration_unit<char_type, Period>(out);
-  }
+  void on_duration_unit() { out = format_duration_unit<Char, Period>(out); }
 };
 
 }  // namespace detail
@@ -2011,12 +1985,11 @@ class year_month_day {
   constexpr auto month() const noexcept -> fmt::month { return month_; }
   constexpr auto day() const noexcept -> fmt::day { return day_; }
 };
-#endif
+#endif  // __cpp_lib_chrono >= 201907
 
 template <typename Char>
 struct formatter<weekday, Char> : private formatter<std::tm, Char> {
  private:
-  bool localized_ = false;
   bool use_tm_formatter_ = false;
 
  public:
@@ -2024,8 +1997,7 @@ struct formatter<weekday, Char> : private formatter<std::tm, Char> {
     auto it = ctx.begin(), end = ctx.end();
     if (it != end && *it == 'L') {
       ++it;
-      localized_ = true;
-      return it;
+      this->set_localized();
     }
     use_tm_formatter_ = it != end && *it != '}';
     return use_tm_formatter_ ? formatter<std::tm, Char>::parse(ctx) : it;
@@ -2036,7 +2008,7 @@ struct formatter<weekday, Char> : private formatter<std::tm, Char> {
     auto time = std::tm();
     time.tm_wday = static_cast<int>(wd.c_encoding());
     if (use_tm_formatter_) return formatter<std::tm, Char>::format(time, ctx);
-    detail::get_locale loc(localized_, ctx.locale());
+    detail::get_locale loc(this->localized(), ctx.locale());
     auto w = detail::tm_writer<decltype(ctx.out()), Char>(loc, ctx.out(), time);
     w.on_abbr_weekday();
     return w.out();
@@ -2070,7 +2042,6 @@ struct formatter<day, Char> : private formatter<std::tm, Char> {
 template <typename Char>
 struct formatter<month, Char> : private formatter<std::tm, Char> {
  private:
-  bool localized_ = false;
   bool use_tm_formatter_ = false;
 
  public:
@@ -2078,8 +2049,7 @@ struct formatter<month, Char> : private formatter<std::tm, Char> {
     auto it = ctx.begin(), end = ctx.end();
     if (it != end && *it == 'L') {
       ++it;
-      localized_ = true;
-      return it;
+      this->set_localized();
     }
     use_tm_formatter_ = it != end && *it != '}';
     return use_tm_formatter_ ? formatter<std::tm, Char>::parse(ctx) : it;
@@ -2090,7 +2060,7 @@ struct formatter<month, Char> : private formatter<std::tm, Char> {
     auto time = std::tm();
     time.tm_mon = static_cast<int>(static_cast<unsigned>(m)) - 1;
     if (use_tm_formatter_) return formatter<std::tm, Char>::format(time, ctx);
-    detail::get_locale loc(localized_, ctx.locale());
+    detail::get_locale loc(this->localized(), ctx.locale());
     auto w = detail::tm_writer<decltype(ctx.out()), Char>(loc, ctx.out(), time);
     w.on_abbr_month();
     return w.out();
@@ -2154,7 +2124,6 @@ struct formatter<std::chrono::duration<Rep, Period>, Char> {
   format_specs specs_;
   detail::arg_ref<Char> width_ref_;
   detail::arg_ref<Char> precision_ref_;
-  bool localized_ = false;
   basic_string_view<Char> fmt_;
 
  public:
@@ -2177,7 +2146,7 @@ struct formatter<std::chrono::duration<Rep, Period>, Char> {
       it = detail::parse_precision(it, end, specs_, precision_ref_, ctx);
     }
     if (it != end && *it == 'L') {
-      localized_ = true;
+      specs_.set_localized();
       ++it;
     }
     end = detail::parse_chrono_format(it, end, checker);
@@ -2204,11 +2173,10 @@ struct formatter<std::chrono::duration<Rep, Period>, Char> {
       out = detail::format_duration_value<Char>(out, d.count(), precision);
       detail::format_duration_unit<Char, Period>(out);
     } else {
-      using chrono_formatter =
-          detail::chrono_formatter<FormatContext, decltype(out), Rep, Period>;
-      auto f = chrono_formatter(ctx, out, d);
+      auto f =
+          detail::duration_formatter<Char, Rep, Period>(out, d, ctx.locale());
       f.precision = precision;
-      f.localized = localized_;
+      f.localized = specs_.localized();
       detail::parse_chrono_format(begin, end, f);
     }
     return detail::write(
@@ -2220,30 +2188,15 @@ template <typename Char> struct formatter<std::tm, Char> {
  private:
   format_specs specs_;
   detail::arg_ref<Char> width_ref_;
+  basic_string_view<Char> fmt_ =
+      detail::string_literal<Char, '%', 'F', ' ', '%', 'T'>();
 
  protected:
-  basic_string_view<Char> fmt_;
+  auto localized() const -> bool { return specs_.localized(); }
+  FMT_CONSTEXPR void set_localized() { specs_.set_localized(); }
 
-  template <typename Duration, typename FormatContext>
-  auto do_format(const std::tm& tm, FormatContext& ctx,
-                 const Duration* subsecs) const -> decltype(ctx.out()) {
-    auto specs = specs_;
-    auto buf = basic_memory_buffer<Char>();
-    auto out = basic_appender<Char>(buf);
-    detail::handle_dynamic_spec(specs.dynamic_width(), specs.width, width_ref_,
-                                ctx);
-
-    auto loc_ref = ctx.locale();
-    detail::get_locale loc(static_cast<bool>(loc_ref), loc_ref);
-    auto w =
-        detail::tm_writer<decltype(out), Char, Duration>(loc, out, tm, subsecs);
-    detail::parse_chrono_format(fmt_.begin(), fmt_.end(), w);
-    return detail::write(
-        ctx.out(), basic_string_view<Char>(buf.data(), buf.size()), specs);
-  }
-
- public:
-  FMT_CONSTEXPR auto parse(parse_context<Char>& ctx) -> const Char* {
+  FMT_CONSTEXPR auto do_parse(parse_context<Char>& ctx, bool has_timezone)
+      -> const Char* {
     auto it = ctx.begin(), end = ctx.end();
     if (it == end || *it == '}') return it;
 
@@ -2256,12 +2209,41 @@ template <typename Char> struct formatter<std::tm, Char> {
       if (it == end) return it;
     }
 
-    end = detail::parse_chrono_format(it, end, detail::tm_format_checker());
+    if (*it == 'L') {
+      specs_.set_localized();
+      ++it;
+    }
+
+    end = detail::parse_chrono_format(it, end,
+                                      detail::tm_format_checker(has_timezone));
     // Replace the default format string only if the new spec is not empty.
     if (end != it) fmt_ = {it, detail::to_unsigned(end - it)};
     return end;
   }
 
+  template <typename Duration, typename FormatContext>
+  auto do_format(const std::tm& tm, FormatContext& ctx,
+                 const Duration* subsecs) const -> decltype(ctx.out()) {
+    auto specs = specs_;
+    auto buf = basic_memory_buffer<Char>();
+    auto out = basic_appender<Char>(buf);
+    detail::handle_dynamic_spec(specs.dynamic_width(), specs.width, width_ref_,
+                                ctx);
+
+    auto loc_ref = specs.localized() ? ctx.locale() : detail::locale_ref();
+    detail::get_locale loc(static_cast<bool>(loc_ref), loc_ref);
+    auto w = detail::tm_writer<basic_appender<Char>, Char, Duration>(
+        loc, out, tm, subsecs);
+    detail::parse_chrono_format(fmt_.begin(), fmt_.end(), w);
+    return detail::write(
+        ctx.out(), basic_string_view<Char>(buf.data(), buf.size()), specs);
+  }
+
+ public:
+  FMT_CONSTEXPR auto parse(parse_context<Char>& ctx) -> const Char* {
+    return do_parse(ctx, detail::has_tm_gmtoff<std::tm>::value);
+  }
+
   template <typename FormatContext>
   auto format(const std::tm& tm, FormatContext& ctx) const
       -> decltype(ctx.out()) {
@@ -2269,10 +2251,11 @@ template <typename Char> struct formatter<std::tm, Char> {
   }
 };
 
+// DEPRECATED! Reversed order of template parameters.
 template <typename Char, typename Duration>
-struct formatter<sys_time<Duration>, Char> : formatter<std::tm, Char> {
-  FMT_CONSTEXPR formatter() {
-    this->fmt_ = detail::string_literal<Char, '%', 'F', ' ', '%', 'T'>();
+struct formatter<sys_time<Duration>, Char> : private formatter<std::tm, Char> {
+  FMT_CONSTEXPR auto parse(parse_context<Char>& ctx) -> const Char* {
+    return this->do_parse(ctx, true);
   }
 
   template <typename FormatContext>
@@ -2283,6 +2266,7 @@ struct formatter<sys_time<Duration>, Char> : formatter<std::tm, Char> {
     if (detail::const_check(
             period::num == 1 && period::den == 1 &&
             !std::is_floating_point<typename Duration::rep>::value)) {
+      detail::set_tm_zone(tm, detail::utc());
       return formatter<std::tm, Char>::format(tm, ctx);
     }
     Duration epoch = val.time_since_epoch();
@@ -2290,11 +2274,13 @@ struct formatter<sys_time<Duration>, Char> : formatter<std::tm, Char> {
         epoch - detail::duration_cast<std::chrono::seconds>(epoch));
     if (subsecs.count() < 0) {
       auto second = detail::duration_cast<Duration>(std::chrono::seconds(1));
-      if (tm.tm_sec != 0)
+      if (tm.tm_sec != 0) {
         --tm.tm_sec;
-      else
+      } else {
         tm = gmtime(val - second);
-      subsecs += detail::duration_cast<Duration>(std::chrono::seconds(1));
+        detail::set_tm_zone(tm, detail::utc());
+      }
+      subsecs += second;
     }
     return formatter<std::tm, Char>::do_format(tm, ctx, &subsecs);
   }
@@ -2312,23 +2298,29 @@ struct formatter<utc_time<Duration>, Char>
 };
 
 template <typename Duration, typename Char>
-struct formatter<local_time<Duration>, Char> : formatter<std::tm, Char> {
-  FMT_CONSTEXPR formatter() {
-    this->fmt_ = detail::string_literal<Char, '%', 'F', ' ', '%', 'T'>();
+struct formatter<local_time<Duration>, Char>
+    : private formatter<std::tm, Char> {
+  FMT_CONSTEXPR auto parse(parse_context<Char>& ctx) -> const Char* {
+    return this->do_parse(ctx, false);
   }
 
   template <typename FormatContext>
   auto format(local_time<Duration> val, FormatContext& ctx) const
       -> decltype(ctx.out()) {
+    auto time_since_epoch = val.time_since_epoch();
+    auto seconds_since_epoch =
+        detail::duration_cast<std::chrono::seconds>(time_since_epoch);
+    // Use gmtime to prevent time zone conversion since local_time has an
+    // unspecified time zone.
+    std::tm t = gmtime(seconds_since_epoch.count());
     using period = typename Duration::period;
     if (period::num == 1 && period::den == 1 &&
         !std::is_floating_point<typename Duration::rep>::value) {
-      return formatter<std::tm, Char>::format(localtime(val), ctx);
+      return formatter<std::tm, Char>::format(t, ctx);
     }
-    auto epoch = val.time_since_epoch();
-    auto subsecs = detail::duration_cast<Duration>(
-        epoch - detail::duration_cast<std::chrono::seconds>(epoch));
-    return formatter<std::tm, Char>::do_format(localtime(val), ctx, &subsecs);
+    auto subsecs =
+        detail::duration_cast<Duration>(time_since_epoch - seconds_since_epoch);
+    return formatter<std::tm, Char>::do_format(t, ctx, &subsecs);
   }
 };
 

extlib/fmt/include/fmt/color.h

@@ -190,11 +190,11 @@ enum class emphasis : uint8_t {
 // rgb is a struct for red, green and blue colors.
 // Using the name "rgb" makes some editors show the color in a tooltip.
 struct rgb {
-  FMT_CONSTEXPR rgb() : r(0), g(0), b(0) {}
-  FMT_CONSTEXPR rgb(uint8_t r_, uint8_t g_, uint8_t b_) : r(r_), g(g_), b(b_) {}
-  FMT_CONSTEXPR rgb(uint32_t hex)
+  constexpr rgb() : r(0), g(0), b(0) {}
+  constexpr rgb(uint8_t r_, uint8_t g_, uint8_t b_) : r(r_), g(g_), b(b_) {}
+  constexpr rgb(uint32_t hex)
       : r((hex >> 16) & 0xFF), g((hex >> 8) & 0xFF), b(hex & 0xFF) {}
-  FMT_CONSTEXPR rgb(color hex)
+  constexpr rgb(color hex)
       : r((uint32_t(hex) >> 16) & 0xFF),
         g((uint32_t(hex) >> 8) & 0xFF),
         b(uint32_t(hex) & 0xFF) {}
@@ -205,97 +205,135 @@ struct rgb {
 
 namespace detail {
 
-// color is a struct of either a rgb color or a terminal color.
+// A bit-packed variant of an RGB color, a terminal color, or unset color.
+// see text_style for the bit-packing scheme.
 struct color_type {
-  FMT_CONSTEXPR color_type() noexcept : is_rgb(), value{} {}
-  FMT_CONSTEXPR color_type(color rgb_color) noexcept : is_rgb(true), value{} {
-    value.rgb_color = static_cast<uint32_t>(rgb_color);
+  constexpr color_type() noexcept = default;
+  constexpr color_type(color rgb_color) noexcept
+      : value_(static_cast<uint32_t>(rgb_color) | (1 << 24)) {}
+  constexpr color_type(rgb rgb_color) noexcept
+      : color_type(static_cast<color>(
+            (static_cast<uint32_t>(rgb_color.r) << 16) |
+            (static_cast<uint32_t>(rgb_color.g) << 8) | rgb_color.b)) {}
+  constexpr color_type(terminal_color term_color) noexcept
+      : value_(static_cast<uint32_t>(term_color) | (3 << 24)) {}
+
+  constexpr auto is_terminal_color() const noexcept -> bool {
+    return (value_ & (1 << 25)) != 0;
   }
-  FMT_CONSTEXPR color_type(rgb rgb_color) noexcept : is_rgb(true), value{} {
-    value.rgb_color = (static_cast<uint32_t>(rgb_color.r) << 16) |
-                      (static_cast<uint32_t>(rgb_color.g) << 8) | rgb_color.b;
+
+  constexpr auto value() const noexcept -> uint32_t {
+    return value_ & 0xFFFFFF;
   }
-  FMT_CONSTEXPR color_type(terminal_color term_color) noexcept
-      : is_rgb(), value{} {
-    value.term_color = static_cast<uint8_t>(term_color);
-  }
-  bool is_rgb;
-  union color_union {
-    uint8_t term_color;
-    uint32_t rgb_color;
-  } value;
+
+  constexpr color_type(uint32_t value) noexcept : value_(value) {}
+
+  uint32_t value_ = 0;
 };
 }  // namespace detail
 
 /// A text style consisting of foreground and background colors and emphasis.
 class text_style {
+  // The information is packed as follows:
+  // ┌──┐
+  // │ 0│─┐
+  // │..│ ├── foreground color value
+  // │23│─┘
+  // ├──┤
+  // │24│─┬── discriminator for the above value. 00 if unset, 01 if it's
+  // │25│─┘   an RGB color, or 11 if it's a terminal color (10 is unused)
+  // ├──┤
+  // │26│──── overflow bit, always zero (see below)
+  // ├──┤
+  // │27│─┐
+  // │..│ │
+  // │50│ │
+  // ├──┤ │
+  // │51│ ├── background color (same format as the foreground color)
+  // │52│ │
+  // ├──┤ │
+  // │53│─┘
+  // ├──┤
+  // │54│─┐
+  // │..│ ├── emphases
+  // │61│─┘
+  // ├──┤
+  // │62│─┬── unused
+  // │63│─┘
+  // └──┘
+  // The overflow bits are there to make operator|= efficient.
+  // When ORing, we must throw if, for either the foreground or background,
+  // one style specifies a terminal color and the other specifies any color
+  // (terminal or RGB); in other words, if one discriminator is 11 and the
+  // other is 11 or 01.
+  //
+  // We do that check by adding the styles. Consider what adding does to each
+  // possible pair of discriminators:
+  //    00 + 00 = 000
+  //    01 + 00 = 001
+  //    11 + 00 = 011
+  //    01 + 01 = 010
+  //    11 + 01 = 100 (!!)
+  //    11 + 11 = 110 (!!)
+  // In the last two cases, the ones we want to catch, the third bit——the
+  // overflow bit——is set. Bingo.
+  //
+  // We must take into account the possible carry bit from the bits
+  // before the discriminator. The only potentially problematic case is
+  // 11 + 00 = 011 (a carry bit would make it 100, not good!), but a carry
+  // bit is impossible in that case, because 00 (unset color) means the
+  // 24 bits that precede the discriminator are all zero.
+  //
+  // This test can be applied to both colors simultaneously.
+
  public:
   FMT_CONSTEXPR text_style(emphasis em = emphasis()) noexcept
-      : set_foreground_color(), set_background_color(), ems(em) {}
+      : style_(static_cast<uint64_t>(em) << 54) {}
 
-  FMT_CONSTEXPR auto operator|=(const text_style& rhs) -> text_style& {
-    if (!set_foreground_color) {
-      set_foreground_color = rhs.set_foreground_color;
-      foreground_color = rhs.foreground_color;
-    } else if (rhs.set_foreground_color) {
-      if (!foreground_color.is_rgb || !rhs.foreground_color.is_rgb)
-        report_error("can't OR a terminal color");
-      foreground_color.value.rgb_color |= rhs.foreground_color.value.rgb_color;
-    }
-
-    if (!set_background_color) {
-      set_background_color = rhs.set_background_color;
-      background_color = rhs.background_color;
-    } else if (rhs.set_background_color) {
-      if (!background_color.is_rgb || !rhs.background_color.is_rgb)
-        report_error("can't OR a terminal color");
-      background_color.value.rgb_color |= rhs.background_color.value.rgb_color;
-    }
-
-    ems = static_cast<emphasis>(static_cast<uint8_t>(ems) |
-                                static_cast<uint8_t>(rhs.ems));
+  FMT_CONSTEXPR auto operator|=(text_style rhs) -> text_style& {
+    if (((style_ + rhs.style_) & ((1ULL << 26) | (1ULL << 53))) != 0)
+      report_error("can't OR a terminal color");
+    style_ |= rhs.style_;
     return *this;
   }
 
-  friend FMT_CONSTEXPR auto operator|(text_style lhs, const text_style& rhs)
+  friend FMT_CONSTEXPR auto operator|(text_style lhs, text_style rhs)
       -> text_style {
     return lhs |= rhs;
   }
 
+  FMT_CONSTEXPR auto operator==(text_style rhs) const noexcept -> bool {
+    return style_ == rhs.style_;
+  }
+
+  FMT_CONSTEXPR auto operator!=(text_style rhs) const noexcept -> bool {
+    return !(*this == rhs);
+  }
+
   FMT_CONSTEXPR auto has_foreground() const noexcept -> bool {
-    return set_foreground_color;
+    return (style_ & (1 << 24)) != 0;
   }
   FMT_CONSTEXPR auto has_background() const noexcept -> bool {
-    return set_background_color;
+    return (style_ & (1ULL << 51)) != 0;
   }
   FMT_CONSTEXPR auto has_emphasis() const noexcept -> bool {
-    return static_cast<uint8_t>(ems) != 0;
+    return (style_ >> 54) != 0;
   }
   FMT_CONSTEXPR auto get_foreground() const noexcept -> detail::color_type {
     FMT_ASSERT(has_foreground(), "no foreground specified for this style");
-    return foreground_color;
+    return style_ & 0x3FFFFFF;
   }
   FMT_CONSTEXPR auto get_background() const noexcept -> detail::color_type {
     FMT_ASSERT(has_background(), "no background specified for this style");
-    return background_color;
+    return (style_ >> 27) & 0x3FFFFFF;
   }
   FMT_CONSTEXPR auto get_emphasis() const noexcept -> emphasis {
     FMT_ASSERT(has_emphasis(), "no emphasis specified for this style");
-    return ems;
+    return static_cast<emphasis>(style_ >> 54);
   }
 
  private:
-  FMT_CONSTEXPR text_style(bool is_foreground,
-                           detail::color_type text_color) noexcept
-      : set_foreground_color(), set_background_color(), ems() {
-    if (is_foreground) {
-      foreground_color = text_color;
-      set_foreground_color = true;
-    } else {
-      background_color = text_color;
-      set_background_color = true;
-    }
-  }
+  FMT_CONSTEXPR text_style(uint64_t style) noexcept : style_(style) {}
 
   friend FMT_CONSTEXPR auto fg(detail::color_type foreground) noexcept
       -> text_style;
@@ -303,23 +341,19 @@ class text_style {
   friend FMT_CONSTEXPR auto bg(detail::color_type background) noexcept
       -> text_style;
 
-  detail::color_type foreground_color;
-  detail::color_type background_color;
-  bool set_foreground_color;
-  bool set_background_color;
-  emphasis ems;
+  uint64_t style_ = 0;
 };
 
 /// Creates a text style from the foreground (text) color.
 FMT_CONSTEXPR inline auto fg(detail::color_type foreground) noexcept
     -> text_style {
-  return text_style(true, foreground);
+  return foreground.value_;
 }
 
 /// Creates a text style from the background color.
 FMT_CONSTEXPR inline auto bg(detail::color_type background) noexcept
     -> text_style {
-  return text_style(false, background);
+  return static_cast<uint64_t>(background.value_) << 27;
 }
 
 FMT_CONSTEXPR inline auto operator|(emphasis lhs, emphasis rhs) noexcept
@@ -334,9 +368,9 @@ template <typename Char> struct ansi_color_escape {
                                   const char* esc) noexcept {
     // If we have a terminal color, we need to output another escape code
     // sequence.
-    if (!text_color.is_rgb) {
+    if (text_color.is_terminal_color()) {
       bool is_background = esc == string_view("\x1b[48;2;");
-      uint32_t value = text_color.value.term_color;
+      uint32_t value = text_color.value();
       // Background ASCII codes are the same as the foreground ones but with
       // 10 more.
       if (is_background) value += 10u;
@@ -360,7 +394,7 @@ template <typename Char> struct ansi_color_escape {
     for (int i = 0; i < 7; i++) {
       buffer[i] = static_cast<Char>(esc[i]);
     }
-    rgb color(text_color.value.rgb_color);
+    rgb color(text_color.value());
     to_esc(color.r, buffer + 7, ';');
     to_esc(color.g, buffer + 11, ';');
     to_esc(color.b, buffer + 15, 'm');
@@ -448,32 +482,26 @@ template <typename T> struct styled_arg : view {
 };
 
 template <typename Char>
-void vformat_to(buffer<Char>& buf, const text_style& ts,
-                basic_string_view<Char> fmt,
+void vformat_to(buffer<Char>& buf, text_style ts, basic_string_view<Char> fmt,
                 basic_format_args<buffered_context<Char>> args) {
-  bool has_style = false;
   if (ts.has_emphasis()) {
-    has_style = true;
     auto emphasis = make_emphasis<Char>(ts.get_emphasis());
     buf.append(emphasis.begin(), emphasis.end());
   }
   if (ts.has_foreground()) {
-    has_style = true;
     auto foreground = make_foreground_color<Char>(ts.get_foreground());
     buf.append(foreground.begin(), foreground.end());
   }
   if (ts.has_background()) {
-    has_style = true;
     auto background = make_background_color<Char>(ts.get_background());
     buf.append(background.begin(), background.end());
   }
   vformat_to(buf, fmt, args);
-  if (has_style) reset_color<Char>(buf);
+  if (ts != text_style()) reset_color<Char>(buf);
 }
 }  // namespace detail
 
-inline void vprint(FILE* f, const text_style& ts, string_view fmt,
-                   format_args args) {
+inline void vprint(FILE* f, text_style ts, string_view fmt, format_args args) {
   auto buf = memory_buffer();
   detail::vformat_to(buf, ts, fmt, args);
   print(f, FMT_STRING("{}"), string_view(buf.begin(), buf.size()));
@@ -489,8 +517,7 @@ inline void vprint(FILE* f, const text_style& ts, string_view fmt,
  *                "Elapsed time: {0:.2f} seconds", 1.23);
  */
 template <typename... T>
-void print(FILE* f, const text_style& ts, format_string<T...> fmt,
-           T&&... args) {
+void print(FILE* f, text_style ts, format_string<T...> fmt, T&&... args) {
   vprint(f, ts, fmt.str, vargs<T...>{{args...}});
 }
 
@@ -504,11 +531,11 @@ void print(FILE* f, const text_style& ts, format_string<T...> fmt,
  *                "Elapsed time: {0:.2f} seconds", 1.23);
  */
 template <typename... T>
-void print(const text_style& ts, format_string<T...> fmt, T&&... args) {
+void print(text_style ts, format_string<T...> fmt, T&&... args) {
   return print(stdout, ts, fmt, std::forward<T>(args)...);
 }
 
-inline auto vformat(const text_style& ts, string_view fmt, format_args args)
+inline auto vformat(text_style ts, string_view fmt, format_args args)
     -> std::string {
   auto buf = memory_buffer();
   detail::vformat_to(buf, ts, fmt, args);
@@ -528,7 +555,7 @@ inline auto vformat(const text_style& ts, string_view fmt, format_args args)
  * ```
  */
 template <typename... T>
-inline auto format(const text_style& ts, format_string<T...> fmt, T&&... args)
+inline auto format(text_style ts, format_string<T...> fmt, T&&... args)
     -> std::string {
   return fmt::vformat(ts, fmt.str, vargs<T...>{{args...}});
 }
@@ -536,8 +563,8 @@ inline auto format(const text_style& ts, format_string<T...> fmt, T&&... args)
 /// Formats a string with the given text_style and writes the output to `out`.
 template <typename OutputIt,
           FMT_ENABLE_IF(detail::is_output_iterator<OutputIt, char>::value)>
-auto vformat_to(OutputIt out, const text_style& ts, string_view fmt,
-                format_args args) -> OutputIt {
+auto vformat_to(OutputIt out, text_style ts, string_view fmt, format_args args)
+    -> OutputIt {
   auto&& buf = detail::get_buffer<char>(out);
   detail::vformat_to(buf, ts, fmt, args);
   return detail::get_iterator(buf, out);
@@ -555,8 +582,8 @@ auto vformat_to(OutputIt out, const text_style& ts, string_view fmt,
  */
 template <typename OutputIt, typename... T,
           FMT_ENABLE_IF(detail::is_output_iterator<OutputIt, char>::value)>
-inline auto format_to(OutputIt out, const text_style& ts,
-                      format_string<T...> fmt, T&&... args) -> OutputIt {
+inline auto format_to(OutputIt out, text_style ts, format_string<T...> fmt,
+                      T&&... args) -> OutputIt {
   return vformat_to(out, ts, fmt.str, vargs<T...>{{args...}});
 }
 

extlib/fmt/include/fmt/format-inl.h

@@ -212,7 +212,7 @@ inline auto floor_log10_pow2_minus_log10_4_over_3(int e) noexcept -> int {
   return (e * 631305 - 261663) >> 21;
 }
 
-FMT_INLINE_VARIABLE constexpr struct {
+FMT_INLINE_VARIABLE constexpr struct div_small_pow10_infos_struct {
   uint32_t divisor;
   int shift_amount;
 } div_small_pow10_infos[] = {{10, 16}, {100, 16}};
@@ -1097,7 +1097,7 @@ template <> struct cache_accessor<double> {
     return {r.high(), r.low() == 0};
   }
 
-  static auto compute_delta(cache_entry_type const& cache, int beta) noexcept
+  static auto compute_delta(const cache_entry_type& cache, int beta) noexcept
       -> uint32_t {
     return static_cast<uint32_t>(cache.high() >> (64 - 1 - beta));
   }
@@ -1526,9 +1526,8 @@ template <typename F> class glibc_file : public file_base<F> {
   }
 
   void init_buffer() {
-    if (this->file_->_IO_write_ptr) return;
+    if (this->file_->_IO_write_ptr < this->file_->_IO_write_end) return;
     // Force buffer initialization by placing and removing a char in a buffer.
-    assume(this->file_->_IO_write_ptr >= this->file_->_IO_write_end);
     putc_unlocked(0, this->file_);
     --this->file_->_IO_write_ptr;
   }

extlib/fmt/include/fmt/format.h

@@ -117,6 +117,7 @@
 #  define FMT_NOINLINE
 #endif
 
+// GCC 4.9 doesn't support qualified names in specializations.
 namespace std {
 template <typename T> struct iterator_traits<fmt::basic_appender<T>> {
   using iterator_category = output_iterator_tag;
@@ -705,7 +706,7 @@ using is_integer =
 
 #if defined(FMT_USE_FLOAT128)
 // Use the provided definition.
-#elif FMT_CLANG_VERSION && FMT_HAS_INCLUDE(<quadmath.h>)
+#elif FMT_CLANG_VERSION >= 309 && FMT_HAS_INCLUDE(<quadmath.h>)
 #  define FMT_USE_FLOAT128 1
 #elif FMT_GCC_VERSION && defined(_GLIBCXX_USE_FLOAT128) && \
     !defined(__STRICT_ANSI__)
@@ -721,11 +722,10 @@ struct float128 {};
 
 template <typename T> using is_float128 = std::is_same<T, float128>;
 
-template <typename T>
-using is_floating_point =
-    bool_constant<std::is_floating_point<T>::value || is_float128<T>::value>;
+template <typename T> struct is_floating_point : std::is_floating_point<T> {};
+template <> struct is_floating_point<float128> : std::true_type {};
 
-template <typename T, bool = std::is_floating_point<T>::value>
+template <typename T, bool = is_floating_point<T>::value>
 struct is_fast_float : bool_constant<std::numeric_limits<T>::is_iec559 &&
                                      sizeof(T) <= sizeof(double)> {};
 template <typename T> struct is_fast_float<T, false> : std::false_type {};
@@ -1613,7 +1613,7 @@ constexpr auto convert_float(T value) -> convert_float_result<T> {
 }
 
 template <typename Char, typename OutputIt>
-FMT_NOINLINE FMT_CONSTEXPR auto fill(OutputIt it, size_t n,
+FMT_CONSTEXPR FMT_NOINLINE auto fill(OutputIt it, size_t n,
                                      const basic_specs& specs) -> OutputIt {
   auto fill_size = specs.fill_size();
   if (fill_size == 1) return detail::fill_n(it, n, specs.fill_unit<Char>());
@@ -2472,8 +2472,8 @@ template <typename T>
 struct has_isfinite<T, enable_if_t<sizeof(std::isfinite(T())) != 0>>
     : std::true_type {};
 
-template <typename T, FMT_ENABLE_IF(std::is_floating_point<T>::value&&
-                                        has_isfinite<T>::value)>
+template <typename T,
+          FMT_ENABLE_IF(is_floating_point<T>::value&& has_isfinite<T>::value)>
 FMT_CONSTEXPR20 auto isfinite(T value) -> bool {
   constexpr T inf = T(std::numeric_limits<double>::infinity());
   if (is_constant_evaluated())

extlib/fmt/include/fmt/ostream.h

@@ -158,7 +158,8 @@ void print(std::ostream& os, format_string<T...> fmt, T&&... args) {
 
 FMT_EXPORT template <typename... T>
 void println(std::ostream& os, format_string<T...> fmt, T&&... args) {
-  fmt::print(os, "{}\n", fmt::format(fmt, std::forward<T>(args)...));
+  fmt::print(os, FMT_STRING("{}\n"),
+             fmt::format(fmt, std::forward<T>(args)...));
 }
 
 FMT_END_NAMESPACE

extlib/fmt/include/fmt/ranges.h

@@ -774,13 +774,13 @@ struct formatter<
     : formatter<detail::all<typename T::container_type>, Char> {
   using all = detail::all<typename T::container_type>;
   template <typename FormatContext>
-  auto format(const T& t, FormatContext& ctx) const -> decltype(ctx.out()) {
+  auto format(const T& value, FormatContext& ctx) const -> decltype(ctx.out()) {
     struct getter : T {
-      static auto get(const T& t) -> all {
-        return {t.*(&getter::c)};  // Access c through the derived class.
+      static auto get(const T& v) -> all {
+        return {v.*(&getter::c)};  // Access c through the derived class.
       }
     };
-    return formatter<all>::format(getter::get(t), ctx);
+    return formatter<all>::format(getter::get(value), ctx);
   }
 };
 

extlib/fmt/include/fmt/std.h

@@ -113,7 +113,6 @@ void write_escaped_path(basic_memory_buffer<Char>& quoted,
 
 }  // namespace detail
 
-FMT_EXPORT
 template <typename Char> struct formatter<std::filesystem::path, Char> {
  private:
   format_specs specs_;
@@ -182,7 +181,6 @@ FMT_END_NAMESPACE
 #endif  // FMT_CPP_LIB_FILESYSTEM
 
 FMT_BEGIN_NAMESPACE
-FMT_EXPORT
 template <std::size_t N, typename Char>
 struct formatter<std::bitset<N>, Char>
     : nested_formatter<basic_string_view<Char>, Char> {
@@ -209,14 +207,12 @@ struct formatter<std::bitset<N>, Char>
   }
 };
 
-FMT_EXPORT
 template <typename Char>
 struct formatter<std::thread::id, Char> : basic_ostream_formatter<Char> {};
 FMT_END_NAMESPACE
 
 #ifdef __cpp_lib_optional
 FMT_BEGIN_NAMESPACE
-FMT_EXPORT
 template <typename T, typename Char>
 struct formatter<std::optional<T>, Char,
                  std::enable_if_t<is_formattable<T, Char>::value>> {
@@ -279,7 +275,6 @@ FMT_END_NAMESPACE
 #ifdef __cpp_lib_expected
 FMT_BEGIN_NAMESPACE
 
-FMT_EXPORT
 template <typename T, typename E, typename Char>
 struct formatter<std::expected<T, E>, Char,
                  std::enable_if_t<(std::is_void<T>::value ||
@@ -311,7 +306,6 @@ FMT_END_NAMESPACE
 
 #ifdef __cpp_lib_source_location
 FMT_BEGIN_NAMESPACE
-FMT_EXPORT
 template <> struct formatter<std::source_location> {
   FMT_CONSTEXPR auto parse(parse_context<>& ctx) { return ctx.begin(); }
 
@@ -367,7 +361,6 @@ template <typename T, typename C> struct is_variant_formattable {
       detail::is_variant_formattable_<T, C>::value;
 };
 
-FMT_EXPORT
 template <typename Char> struct formatter<std::monostate, Char> {
   FMT_CONSTEXPR auto parse(parse_context<Char>& ctx) -> const Char* {
     return ctx.begin();
@@ -380,7 +373,6 @@ template <typename Char> struct formatter<std::monostate, Char> {
   }
 };
 
-FMT_EXPORT
 template <typename Variant, typename Char>
 struct formatter<
     Variant, Char,
@@ -414,11 +406,11 @@ FMT_END_NAMESPACE
 #endif  // FMT_CPP_LIB_VARIANT
 
 FMT_BEGIN_NAMESPACE
-FMT_EXPORT
 template <> struct formatter<std::error_code> {
  private:
   format_specs specs_;
   detail::arg_ref<char> width_ref_;
+  bool debug_ = false;
 
  public:
   FMT_CONSTEXPR auto parse(parse_context<>& ctx) -> const char* {
@@ -426,11 +418,19 @@ template <> struct formatter<std::error_code> {
     if (it == end) return it;
 
     it = detail::parse_align(it, end, specs_);
-    if (it == end) return it;
 
     char c = *it;
-    if ((c >= '0' && c <= '9') || c == '{')
+    if (it != end && ((c >= '0' && c <= '9') || c == '{'))
       it = detail::parse_width(it, end, specs_, width_ref_, ctx);
+
+    if (it != end && *it == '?') {
+      debug_ = true;
+      ++it;
+    }
+    if (it != end && *it == 's') {
+      specs_.set_type(presentation_type::string);
+      ++it;
+    }
     return it;
   }
 
@@ -440,12 +440,21 @@ template <> struct formatter<std::error_code> {
     auto specs = specs_;
     detail::handle_dynamic_spec(specs.dynamic_width(), specs.width, width_ref_,
                                 ctx);
-    memory_buffer buf;
-    buf.append(string_view(ec.category().name()));
-    buf.push_back(':');
-    detail::write<char>(appender(buf), ec.value());
-    return detail::write<char>(ctx.out(), string_view(buf.data(), buf.size()),
-                               specs);
+    auto buf = memory_buffer();
+    if (specs_.type() == presentation_type::string) {
+      buf.append(ec.message());
+    } else {
+      buf.append(string_view(ec.category().name()));
+      buf.push_back(':');
+      detail::write<char>(appender(buf), ec.value());
+    }
+    auto quoted = memory_buffer();
+    auto str = string_view(buf.data(), buf.size());
+    if (debug_) {
+      detail::write_escaped_string<char>(std::back_inserter(quoted), str);
+      str = string_view(quoted.data(), quoted.size());
+    }
+    return detail::write<char>(ctx.out(), str, specs);
   }
 };
 
@@ -520,7 +529,6 @@ auto write_demangled_name(OutputIt out, const std::type_info& ti) -> OutputIt {
 
 }  // namespace detail
 
-FMT_EXPORT
 template <typename Char>
 struct formatter<std::type_info, Char  // DEPRECATED! Mixing code unit types.
                  > {
@@ -537,7 +545,6 @@ struct formatter<std::type_info, Char  // DEPRECATED! Mixing code unit types.
 };
 #endif
 
-FMT_EXPORT
 template <typename T, typename Char>
 struct formatter<
     T, Char,  // DEPRECATED! Mixing code unit types.
@@ -603,7 +610,6 @@ struct is_bit_reference_like<std::__bit_const_reference<C>> {
 // We can't use std::vector<bool, Allocator>::reference and
 // std::bitset<N>::reference because the compiler can't deduce Allocator and N
 // in partial specialization.
-FMT_EXPORT
 template <typename BitRef, typename Char>
 struct formatter<BitRef, Char,
                  enable_if_t<detail::is_bit_reference_like<BitRef>::value>>
@@ -623,7 +629,6 @@ template <typename T> auto ptr(const std::shared_ptr<T>& p) -> const void* {
   return p.get();
 }
 
-FMT_EXPORT
 template <typename T, typename Char>
 struct formatter<std::atomic<T>, Char,
                  enable_if_t<is_formattable<T, Char>::value>>
@@ -636,7 +641,6 @@ struct formatter<std::atomic<T>, Char,
 };
 
 #ifdef __cpp_lib_atomic_flag_test
-FMT_EXPORT
 template <typename Char>
 struct formatter<std::atomic_flag, Char> : formatter<bool, Char> {
   template <typename FormatContext>
@@ -647,7 +651,6 @@ struct formatter<std::atomic_flag, Char> : formatter<bool, Char> {
 };
 #endif  // __cpp_lib_atomic_flag_test
 
-FMT_EXPORT
 template <typename T, typename Char> struct formatter<std::complex<T>, Char> {
  private:
   detail::dynamic_format_specs<Char> specs_;
@@ -710,7 +713,6 @@ template <typename T, typename Char> struct formatter<std::complex<T>, Char> {
   }
 };
 
-FMT_EXPORT
 template <typename T, typename Char>
 struct formatter<std::reference_wrapper<T>, Char,
                  enable_if_t<is_formattable<remove_cvref_t<T>, Char>::value>>

extlib/fmt/include/fmt/xchar.h

@@ -112,10 +112,6 @@ inline auto runtime(wstring_view s) -> runtime_format_string<wchar_t> {
   return {{s}};
 }
 
-template <> struct is_char<wchar_t> : std::true_type {};
-template <> struct is_char<char16_t> : std::true_type {};
-template <> struct is_char<char32_t> : std::true_type {};
-
 #ifdef __cpp_char8_t
 template <> struct is_char<char8_t> : bool_constant<detail::is_utf8_enabled> {};
 #endif
@@ -322,7 +318,7 @@ template <typename... T> void println(wformat_string<T...> fmt, T&&... args) {
   return print(L"{}\n", fmt::format(fmt, std::forward<T>(args)...));
 }
 
-inline auto vformat(const text_style& ts, wstring_view fmt, wformat_args args)
+inline auto vformat(text_style ts, wstring_view fmt, wformat_args args)
     -> std::wstring {
   auto buf = wmemory_buffer();
   detail::vformat_to(buf, ts, fmt, args);
@@ -330,19 +326,19 @@ inline auto vformat(const text_style& ts, wstring_view fmt, wformat_args args)
 }
 
 template <typename... T>
-inline auto format(const text_style& ts, wformat_string<T...> fmt, T&&... args)
+inline auto format(text_style ts, wformat_string<T...> fmt, T&&... args)
     -> std::wstring {
   return fmt::vformat(ts, fmt, fmt::make_wformat_args(args...));
 }
 
 template <typename... T>
-FMT_DEPRECATED void print(std::FILE* f, const text_style& ts,
-                          wformat_string<T...> fmt, const T&... args) {
+FMT_DEPRECATED void print(std::FILE* f, text_style ts, wformat_string<T...> fmt,
+                          const T&... args) {
   vprint(f, ts, fmt, fmt::make_wformat_args(args...));
 }
 
 template <typename... T>
-FMT_DEPRECATED void print(const text_style& ts, wformat_string<T...> fmt,
+FMT_DEPRECATED void print(text_style ts, wformat_string<T...> fmt,
                           const T&... args) {
   return print(stdout, ts, fmt, args...);
 }

extlib/fmt/support/bazel/.bazelversion

@@ -1 +1 @@
-7.1.2
+8.1.1

extlib/fmt/support/bazel/BUILD.bazel

@@ -1,3 +1,5 @@
+load("@rules_cc//cc:defs.bzl", "cc_library")
+
 cc_library(
     name = "fmt",
     srcs = [

extlib/fmt/support/bazel/MODULE.bazel

@@ -3,4 +3,5 @@ module(
    compatibility_level = 10,
 )
 
-bazel_dep(name = "platforms", version = "0.0.10")
+bazel_dep(name = "platforms", version = "0.0.11")
+bazel_dep(name = "rules_cc", version = "0.1.1")

extlib/fmt/support/bazel/README.md

@@ -13,7 +13,7 @@ The [Bazel Central Registry](https://github.com/bazelbuild/bazel-central-registr
 For instance, to use {fmt} add to your `MODULE.bazel` file:
 
 ```
-bazel_dep(name = "fmt", version = "10.2.1")
+bazel_dep(name = "fmt", version = "11.1.4")
 ```
 
 ### Live at head

extlib/gettext.win32/lib.amd64/libgnuintl-8.def

@@ -1,15 +1,29 @@
 EXPORTS
-    DllMain
     __imp_libintl_version DATA
     __printf__
     _nl_expand_alias
     _nl_msg_cat_cntr DATA
     bind_textdomain_codeset
     bindtextdomain
+    c32isalnum
+    c32isalpha
+    c32isblank
+    c32iscntrl
+    c32isdigit
+    c32isgraph
+    c32islower
+    c32isprint
+    c32ispunct
+    c32isspace
+    c32isupper
+    c32isxdigit
+    c32tolower
+    c32width
     dcgettext
     dcngettext
     dgettext
     dngettext
+    getlocalename_l_unsafe
     gettext
     libintl_asprintf
     libintl_bind_textdomain_codeset
@@ -22,7 +36,6 @@ EXPORTS
     libintl_fprintf
     libintl_fwprintf
     libintl_gettext
-    libintl_hash_string
     libintl_ngettext
     libintl_nl_current_default_domain DATA
     libintl_nl_default_default_domain DATA
@@ -46,5 +59,45 @@ EXPORTS
     libintl_wbindtextdomain
     libintl_wprintf
     locale_charset
+    mb_copy
+    mb_width_aux
+    mbiterf_next
+    mbrtoc32
+    mbsnlen
     ngettext
+    rpl_getcwd
+    rpl_iswalnum
+    rpl_iswalpha
+    rpl_iswblank
+    rpl_iswcntrl
+    rpl_iswdigit
+    rpl_iswgraph
+    rpl_iswlower
+    rpl_iswprint
+    rpl_iswpunct
+    rpl_iswspace
+    rpl_iswupper
+    rpl_iswxdigit
+    rpl_localeconv
+    rpl_pthread_once
+    rpl_towlower
+    rpl_towupper
+    setlocale_messages
+    setlocale_messages_null
     textdomain
+    uc_is_alnum
+    uc_is_alpha
+    uc_is_blank
+    uc_is_cntrl
+    uc_is_digit
+    uc_is_graph
+    uc_is_lower
+    uc_is_print
+    uc_is_punct
+    uc_is_space
+    uc_is_upper
+    uc_is_xdigit
+    uc_tolower
+    uc_width
+    wcwidth
+    wgetcwd

extlib/gettext.win32/lib.i386/libgnuintl-8.def

@@ -5,10 +5,25 @@ EXPORTS
     _nl_msg_cat_cntr DATA
     bind_textdomain_codeset
     bindtextdomain
+    c32isalnum
+    c32isalpha
+    c32isblank
+    c32iscntrl
+    c32isdigit
+    c32isgraph
+    c32islower
+    c32isprint
+    c32ispunct
+    c32isspace
+    c32isupper
+    c32isxdigit
+    c32tolower
+    c32width
     dcgettext
     dcngettext
     dgettext
     dngettext
+    getlocalename_l_unsafe
     gettext
     libintl_asprintf
     libintl_bind_textdomain_codeset
@@ -21,7 +36,6 @@ EXPORTS
     libintl_fprintf
     libintl_fwprintf
     libintl_gettext
-    libintl_hash_string
     libintl_ngettext
     libintl_nl_current_default_domain DATA
     libintl_nl_default_default_domain DATA
@@ -45,5 +59,45 @@ EXPORTS
     libintl_wbindtextdomain
     libintl_wprintf
     locale_charset
+    mb_copy
+    mb_width_aux
+    mbiterf_next
+    mbrtoc32
+    mbsnlen
     ngettext
+    rpl_getcwd
+    rpl_iswalnum
+    rpl_iswalpha
+    rpl_iswblank
+    rpl_iswcntrl
+    rpl_iswdigit
+    rpl_iswgraph
+    rpl_iswlower
+    rpl_iswprint
+    rpl_iswpunct
+    rpl_iswspace
+    rpl_iswupper
+    rpl_iswxdigit
+    rpl_localeconv
+    rpl_pthread_once
+    rpl_towlower
+    rpl_towupper
+    setlocale_messages
+    setlocale_messages_null
     textdomain
+    uc_is_alnum
+    uc_is_alpha
+    uc_is_blank
+    uc_is_cntrl
+    uc_is_digit
+    uc_is_graph
+    uc_is_lower
+    uc_is_print
+    uc_is_punct
+    uc_is_space
+    uc_is_upper
+    uc_is_xdigit
+    uc_tolower
+    uc_width
+    wcwidth
+    wgetcwd

extlib/gettext.win32/patches/0005-Fix-compilation-of-pthread_sigmask.c.patch

@@ -1,17 +0,0 @@
-From: Michele Locati <michele@locati.it>
-Date: Fri, 10 May 2019 11:11:02 +0200
-Subject: [PATCH] Fix compilation of pthread_sigmask.c
-
---- a/gettext-tools/gnulib-tests/pthread_sigmask.c
-+++ b/gettext-tools/gnulib-tests/pthread_sigmask.c
-@@ -30,9 +30,9 @@
- # include <unistd.h>
- #endif
- 
-+#undef pthread_sigmask
- int
- pthread_sigmask (int how, const sigset_t *new_mask, sigset_t *old_mask)
--#undef pthread_sigmask
- {
- #if HAVE_PTHREAD_SIGMASK
-   int ret;

extlib/gettext.win32/patches/001-gettext-runtime-disable-iconv.patch

@@ -0,0 +1,57 @@
+diff '--color=auto' -ur gettext-0.24.orig/gettext-runtime/config.h.in gettext-0.24/gettext-runtime/config.h.in
+--- gettext-0.24.orig/gettext-runtime/config.h.in	2025-02-25 05:25:16.000000000 -0500
++++ gettext-0.24/gettext-runtime/config.h.in	2025-04-21 13:07:02.520459899 -0400
+@@ -725,10 +725,12 @@
+ #undef HAVE_GOOD_USELOCALE
+ 
+ /* Define if you have the iconv() function and it works. */
+-#undef HAVE_ICONV
++/* rom-properties: Disabled. */
++/* #undef HAVE_ICONV */
+ 
+ /* Define to 1 if you have the <iconv.h> header file. */
+-#undef HAVE_ICONV_H
++/* rom-properties: Disabled. */
++/* #undef HAVE_ICONV_H */
+ 
+ /* Define to 1 if the compiler supports one of the keywords 'inline',
+    '__inline__', '__inline' and effectively inlines functions marked as such.
+@@ -1243,11 +1245,13 @@
+ #undef HAVE___INLINE
+ 
+ /* Define as const if the declaration of iconv() needs const. */
+-#undef ICONV_CONST
++/* rom-properties: Disabled. */
++/* #undef ICONV_CONST */
+ 
+ /* Define to a symbolic name denoting the flavor of iconv_open()
+    implementation. */
+-#undef ICONV_FLAVOR
++/* rom-properties: Disabled. */
++/* #undef ICONV_FLAVOR */
+ 
+ /* Define to the value of ${prefix}, as a string. */
+ #undef INSTALLPREFIX
+diff '--color=auto' -ur gettext-0.24.orig/gettext-runtime/intl/config.h.in gettext-0.24/gettext-runtime/intl/config.h.in
+--- gettext-0.24.orig/gettext-runtime/intl/config.h.in	2025-02-25 05:25:10.000000000 -0500
++++ gettext-0.24/gettext-runtime/intl/config.h.in	2025-04-21 13:06:27.935503569 -0400
+@@ -373,7 +373,8 @@
+ #undef HAVE_GOOD_USELOCALE
+ 
+ /* Define if you have the iconv() function and it works. */
+-#undef HAVE_ICONV
++/* rom-properties: Disabled. */
++/* #undef HAVE_ICONV */
+ 
+ /* Define if you have the 'intmax_t' type in <stdint.h> or <inttypes.h>. */
+ #undef HAVE_INTMAX_T
+@@ -758,7 +759,8 @@
+ #endif
+ 
+ /* Define as const if the declaration of iconv() needs const. */
+-#undef ICONV_CONST
++/* rom-properties: Disabled. */
++/* #undef ICONV_CONST */
+ 
+ /* Define as the bit index in the word where to find bit 0 of the exponent of
+    'long double'. */

extlib/gettext.win32/patches/06-dont-include-ctype-after-gnulibs-wctype.mingw.patch

@@ -1,44 +0,0 @@
---- gettext-tools/gnulib-lib/libxml/parser.c.orig	2013-01-18 10:24:37 +0400
-+++ gettext-tools/gnulib-lib/libxml/parser.c	2013-01-18 10:36:35 +0400
-@@ -78,6 +78,9 @@
- #include <string.h>
- #include <stdarg.h>
- #include <stddef.h>
-+#ifdef HAVE_CTYPE_H
-+#include <ctype.h>
-+#endif
- #include <libxml/xmlmemory.h>
- #include <libxml/threads.h>
- #include <libxml/globals.h>
-@@ -97,9 +100,6 @@
- #include <libxml/xmlschemastypes.h>
- #include <libxml/relaxng.h>
- #endif
--#ifdef HAVE_CTYPE_H
--#include <ctype.h>
--#endif
- #ifdef HAVE_STDLIB_H
- #include <stdlib.h>
- #endif
---- gettext-tools/gnulib-lib/libxml/threads.c.orig	2013-01-18 10:38:24 +0400
-+++ gettext-tools/gnulib-lib/libxml/threads.c	2013-01-18 10:41:11 +0400
-@@ -41,15 +41,16 @@
- 
- #include <string.h>
- 
-+#ifdef HAVE_UNISTD_H
-+#include <unistd.h>
-+#endif
-+
- #include <libxml/threads.h>
- #include <libxml/globals.h>
- 
- #ifdef HAVE_SYS_TYPES_H
- #include <sys/types.h>
- #endif
--#ifdef HAVE_UNISTD_H
--#include <unistd.h>
--#endif
- #ifdef HAVE_STDLIB_H
- #include <stdlib.h>
- #endif

extlib/gettext.win32/patches/07-fix-asprintf-conflict.mingw.patch

@@ -1,110 +0,0 @@
---- gettext-runtime/libasprintf/gnulib-lib/vasnprintf.h.orig  2023-05-19 00:19:37.000000000 -0400
-+++ gettext-runtime/libasprintf/gnulib-lib/vasnprintf.h       2023-07-01 12:17:08.374266671 -0400
-@@ -35,6 +35,8 @@
- extern "C" {
- #endif
- 
-+#if !defined(__USE_MINGW_ANSI_STDIO) && defined(__MINGW64_VERSION_MAJOR)
-+
- /* Write formatted output to a string dynamically allocated with malloc().
-    You can pass a preallocated buffer for the result in RESULTBUF and its
-    size in *LENGTHP; otherwise you pass RESULTBUF = NULL.
-@@ -63,6 +65,7 @@
- # define asnprintf rpl_asnprintf
- # define vasnprintf rpl_vasnprintf
- #endif
-+
- extern char * asnprintf (char *restrict resultbuf, size_t *lengthp,
-                          const char *format, ...)
-        _GL_ATTRIBUTE_FORMAT ((_GL_ATTRIBUTE_SPEC_PRINTF_STANDARD, 3, 4));
-@@ -70,6 +73,8 @@
-                           const char *format, va_list args)
-        _GL_ATTRIBUTE_FORMAT ((_GL_ATTRIBUTE_SPEC_PRINTF_STANDARD, 3, 0));
- 
-+#endif /* !defined(__USE_MINGW_ANSI_STDIO) && defined(__MINGW64_VERSION_MAJOR) */
-+
- #ifdef __cplusplus
- }
- #endif
---- gettext-runtime/intl/gnulib-lib/vasnprintf.h.orig  2023-05-19 00:19:37.000000000 -0400
-+++ gettext-runtime/intl/gnulib-lib/vasnprintf.h       2023-07-01 12:17:08.374266671 -0400
-@@ -35,6 +35,8 @@
- extern "C" {
- #endif
- 
-+#if !defined(__USE_MINGW_ANSI_STDIO) && defined(__MINGW64_VERSION_MAJOR)
-+
- /* Write formatted output to a string dynamically allocated with malloc().
-    You can pass a preallocated buffer for the result in RESULTBUF and its
-    size in *LENGTHP; otherwise you pass RESULTBUF = NULL.
-@@ -63,6 +65,7 @@
- # define asnprintf rpl_asnprintf
- # define vasnprintf rpl_vasnprintf
- #endif
-+
- extern char * asnprintf (char *restrict resultbuf, size_t *lengthp,
-                          const char *format, ...)
-        _GL_ATTRIBUTE_FORMAT ((_GL_ATTRIBUTE_SPEC_PRINTF_STANDARD, 3, 4));
-@@ -70,6 +73,8 @@
-                           const char *format, va_list args)
-        _GL_ATTRIBUTE_FORMAT ((_GL_ATTRIBUTE_SPEC_PRINTF_STANDARD, 3, 0));
- 
-+#endif /* !defined(__USE_MINGW_ANSI_STDIO) && defined(__MINGW64_VERSION_MAJOR) */
-+
- #ifdef __cplusplus
- }
- #endif
---- gettext-runtime/libasprintf/vasprintf.h.orig      2019-05-11 07:29:32.000000000 -0400
-+++ gettext-runtime/libasprintf/vasprintf.h   2023-07-01 12:15:45.172287523 -0400
-@@ -37,6 +37,8 @@
- extern "C" {
- #endif
- 
-+#if !defined(__USE_MINGW_ANSI_STDIO) && defined(__MINGW64_VERSION_MAJOR)
-+
- /* Write formatted output to a string dynamically allocated with malloc().
-    If the memory allocation succeeds, store the address of the string in
-    *RESULT and return the number of resulting bytes, excluding the trailing
-@@ -46,6 +48,8 @@
- extern int vasprintf (char **result, const char *format, va_list args)
-        __attribute__ ((__format__ (__printf__, 2, 0)));
- 
-+#endif /* !defined(__USE_MINGW_ANSI_STDIO) && defined(__MINGW64_VERSION_MAJOR) */
-+
- #ifdef __cplusplus
- }
- #endif
---- gettext-runtime/libasprintf/gnulib-lib/vasnprintf.c.orig   2023-06-12 13:34:50.000000000 -0400
-+++ gettext-runtime/libasprintf/gnulib-lib/vasnprintf.c        2023-07-01 12:19:12.477235568 -0400
-@@ -80,7 +80,14 @@
- #endif
- 
- #include <locale.h>     /* localeconv() */
-+#if defined(__MINGW64_VERSION_MAJOR) && defined(__USE_MINGW_ANSI_STDIO)
-+#  define REMOVED__USE_MINGW_ANSI_STDIO
-+#  undef __USE_MINGW_ANSI_STDIO
-+#endif
- #include <stdio.h>      /* snprintf(), sprintf() */
-+#if defined(__MINGW64_VERSION_MAJOR) && defined(REMOVED__USE_MINGW_ANSI_STDIO)
-+#  define __USE_MINGW_ANSI_STDIO 1
-+#endif
- #include <stdlib.h>     /* abort(), malloc(), realloc(), free() */
- #include <string.h>     /* memcpy(), strlen() */
- #include <wchar.h>      /* mbstate_t, mbrtowc(), mbrlen(), wcrtomb() */
---- gettext-runtime/intl/gnulib-lib/vasnprintf.c.orig   2023-06-12 13:34:50.000000000 -0400
-+++ gettext-runtime/intl/gnulib-lib/vasnprintf.c        2023-07-01 12:19:12.477235568 -0400
-@@ -80,7 +80,14 @@
- #endif
- 
- #include <locale.h>     /* localeconv() */
-+#if defined(__MINGW64_VERSION_MAJOR) && defined(__USE_MINGW_ANSI_STDIO)
-+#  define REMOVED__USE_MINGW_ANSI_STDIO
-+#  undef __USE_MINGW_ANSI_STDIO
-+#endif
- #include <stdio.h>      /* snprintf(), sprintf() */
-+#if defined(__MINGW64_VERSION_MAJOR) && defined(REMOVED__USE_MINGW_ANSI_STDIO)
-+#  define __USE_MINGW_ANSI_STDIO 1
-+#endif
- #include <stdlib.h>     /* abort(), malloc(), realloc(), free() */
- #include <string.h>     /* memcpy(), strlen() */
- #include <wchar.h>      /* mbstate_t, mbrtowc(), mbrlen(), wcrtomb() */

extlib/gettext.win32/patches/08-vs-compatible.patch

@@ -1,11 +0,0 @@
---- gettext-runtime/intl/libgnuintl.in.h.orig   2023-06-17 06:58:50.000000000 -0400
-+++ gettext-runtime/intl/libgnuintl.in.h        2023-07-01 12:21:22.071203089 -0400
-@@ -385,7 +385,7 @@
- 
- # if !((defined printf && defined _GL_STDIO_H) || defined GNULIB_overrides_printf) /* don't override gnulib */
- #  undef printf
--#  if defined __NetBSD__ || defined __BEOS__ || defined __CYGWIN__ || defined __MINGW32__
-+#  if defined __NetBSD__ || defined __BEOS__ || defined __CYGWIN__ || defined __MINGW32__ || defined _MSC_VER
- /* Don't break __attribute__((format(printf,M,N))).
-    This redefinition is only possible because the libc in NetBSD, Cygwin,
-    mingw does not have a function __printf__.

extlib/gettext.win32/patches/1000-disable-iconv-in-config-h-in.diff

@@ -1,88 +0,0 @@
---- gettext-0.22/gettext-tools/config.h.in.orig	2023-07-28 11:27:02.945221690 -0400
-+++ gettext-0.22/gettext-tools/config.h.in	2023-07-28 11:28:23.103950976 -0400
-@@ -1450,10 +1450,12 @@
- #undef HAVE_GOOD_USELOCALE
- 
- /* Define if you have the iconv() function and it works. */
--#undef HAVE_ICONV
-+/* rom-properties: Disabled. */
-+/* #undef HAVE_ICONV */
- 
- /* Define to 1 if you have the <iconv.h> header file. */
--#undef HAVE_ICONV_H
-+/* rom-properties: Disabled. */
-+/* #undef HAVE_ICONV_H */
- 
- /* Define to 1 if you have the `inet_ntop' function. */
- #undef HAVE_INET_NTOP
-@@ -2315,11 +2317,13 @@
- #undef HAVE___XPG_STRERROR_R
- 
- /* Define as const if the declaration of iconv() needs const. */
--#undef ICONV_CONST
-+/* rom-properties: Disabled. */
-+/* #undef ICONV_CONST */
- 
- /* Define to a symbolic name denoting the flavor of iconv_open()
-    implementation. */
--#undef ICONV_FLAVOR
-+/* rom-properties: Disabled. */
-+/* #undef ICONV_FLAVOR */
- 
- /* Define to the value of ${prefix}, as a string. */
- #undef INSTALLPREFIX
---- gettext-0.22/gettext-runtime/config.h.in.orig	2023-07-28 11:27:15.394179647 -0400
-+++ gettext-0.22/gettext-runtime/config.h.in	2023-07-28 11:28:35.397909457 -0400
-@@ -533,10 +533,12 @@
- #undef HAVE_GOOD_USELOCALE
- 
- /* Define if you have the iconv() function and it works. */
--#undef HAVE_ICONV
-+/* rom-properties: Disabled. */
-+/* #undef HAVE_ICONV */
- 
- /* Define to 1 if you have the <iconv.h> header file. */
--#undef HAVE_ICONV_H
-+/* rom-properties: Disabled. */
-+/* #undef HAVE_ICONV_H */
- 
- /* Define to 1 if the compiler supports one of the keywords 'inline',
-    '__inline__', '__inline' and effectively inlines functions marked as such.
-@@ -958,11 +960,13 @@
- #undef HAVE___INLINE
- 
- /* Define as const if the declaration of iconv() needs const. */
--#undef ICONV_CONST
-+/* rom-properties: Disabled. */
-+/* #undef ICONV_CONST */
- 
- /* Define to a symbolic name denoting the flavor of iconv_open()
-    implementation. */
--#undef ICONV_FLAVOR
-+/* rom-properties: Disabled. */
-+/* #undef ICONV_FLAVOR */
- 
- /* Define to the value of ${prefix}, as a string. */
- #undef INSTALLPREFIX
---- gettext-0.22/gettext-runtime/intl/config.h.in.orig	2023-06-17 07:53:52.000000000 -0400
-+++ gettext-0.22/gettext-runtime/intl/config.h.in	2023-07-28 11:28:42.230886380 -0400
-@@ -351,7 +351,8 @@
- #undef HAVE_GOOD_USELOCALE
- 
- /* Define if you have the iconv() function and it works. */
--#undef HAVE_ICONV
-+/* rom-properties: Disabled. */
-+/* #undef HAVE_ICONV */
- 
- /* Define if you have the 'intmax_t' type in <stdint.h> or <inttypes.h>. */
- #undef HAVE_INTMAX_T
-@@ -715,7 +716,8 @@
- #endif
- 
- /* Define as const if the declaration of iconv() needs const. */
--#undef ICONV_CONST
-+/* rom-properties: Disabled. */
-+/* #undef ICONV_CONST */
- 
- /* Define to the value of ${prefix}, as a string. */
- #undef INSTALLPREFIX

extlib/gettext.win32/patches/1002-dcigettext-c-include-wchar-h.patch

@@ -1,13 +0,0 @@
---- gettext-0.21/gettext-runtime/intl/dcigettext.c.orig	2020-06-06 10:03:32.000000000 -0400
-+++ gettext-0.21/gettext-runtime/intl/dcigettext.c	2020-08-20 11:57:33.117783195 -0400
-@@ -65,6 +65,10 @@
- # include <unistd.h>
- #endif
- 
-+#if defined _WIN32 && !defined __CYGWIN__
-+# include <wchar.h>
-+#endif
-+
- #include <locale.h>
- 
- #ifdef _LIBC

extlib/gettext.win32/patches/1003-gettextsrc-exports-missing-formatstring-ruby.patch

@@ -1,10 +0,0 @@
---- gettext-0.21/gettext-tools/woe32dll/gettextsrc-exports.c.orig	2019-12-23 06:21:12.000000000 -0500
-+++ gettext-0.21/gettext-tools/woe32dll/gettextsrc-exports.c	2020-08-20 12:20:30.752088214 -0400
-@@ -50,6 +50,7 @@
- VARIABLE(formatstring_python_brace)
- VARIABLE(formatstring_qt)
- VARIABLE(formatstring_qt_plural)
-+VARIABLE(formatstring_ruby)
- VARIABLE(formatstring_scheme)
- VARIABLE(formatstring_sh)
- VARIABLE(formatstring_smalltalk)

extlib/gettext.win32/patches/1004-gettext-runtime-disable-iconv.patch

@@ -1,17 +0,0 @@
---- gettext-0.21/gettext-runtime/config.h.in.orig	2020-07-26 17:03:57.000000000 -0400
-+++ gettext-0.21/gettext-runtime/config.h.in	2020-08-20 12:49:17.066788915 -0400
-@@ -391,10 +391,12 @@
- #undef HAVE_GETUID
- 
- /* Define if you have the iconv() function and it works. */
--#undef HAVE_ICONV
-+/* rom-properties: Disabled. */
-+/* #undef HAVE_ICONV */
- 
- /* Define to 1 if you have the <iconv.h> header file. */
--#undef HAVE_ICONV_H
-+/* rom-properties: Disabled. */
-+/* #undef HAVE_ICONV_H */
- 
- /* Define to 1 if the compiler supports one of the keywords 'inline',
-    '__inline__', '__inline' and effectively inlines functions marked as such.

extlib/gettext.win32/patches/122-Use-LF-as-newline-in-envsubst.patch

@@ -1,19 +1,5 @@
-From 89170435bde2d889dee8b20c74d7771e6af8f19e Mon Sep 17 00:00:00 2001
-From: Tim S <stahta01@users.sourceforge.net>
-Date: Sun, 16 Sep 2018 10:35:04 -0400
-Subject: [PATCH] Use LF as newline in envsubst
-
-Now using underline prefix in functions as stated at:
-  https://docs.microsoft.com/en-us/cpp/c-runtime-library/reference/setmode
-And, change mode back to prior mode
-
----
- gettext-runtime/src/envsubst.c | 18 ++++++++++++++++++
- 1 file changed, 18 insertions(+)
-
-diff a/gettext-runtime/src/envsubst.c b/gettext-runtime/src/envsubst.c
---- a/gettext-runtime/src/envsubst.c.orig 2023-06-17 06:58:50.000000000 -0400
-+++ b/gettext-runtime/src/envsubst.c      2023-07-01 12:25:40.029138440 -0400
+--- ./gettext-runtime/src/envsubst.c.orig	2024-12-31 05:05:32.000000000 -0500
++++ ./gettext-runtime/src/envsubst.c	2025-01-06 11:44:15.432757696 -0500
 @@ -28,6 +28,11 @@
  #include <unistd.h>
  #include <locale.h>
@@ -23,10 +9,10 @@ diff a/gettext-runtime/src/envsubst.c b/gettext-runtime/src/envsubst.c
 +# include <fcntl.h>
 +#endif
 +
+ #include <error.h>
+ #include "attribute.h"
  #include "noreturn.h"
- #include "closeout.h"
- #include "error.h"
-@@ -289,8 +294,21 @@
+@@ -292,8 +297,21 @@
  static void
  print_variable (const char *var_ptr, size_t var_len)
  {

extlib/gettext.win32/patches/200-tools-gnulib-define-installdir.patch

@@ -1,12 +0,0 @@
-for relocate()
---- gettext-0.19.8.1/gettext-tools/gnulib-lib/Makefile.am.orig	2019-05-11 22:20:53.069987300 +0200
-+++ gettext-0.19.8.1/gettext-tools/gnulib-lib/Makefile.am	2019-05-11 22:21:54.510209600 +0200
-@@ -48,6 +48,8 @@
- # Parametrization of the 'relocatable' module.
- AM_CPPFLAGS += -DDEPENDS_ON_LIBICONV=1 -DDEPENDS_ON_LIBINTL=1
- 
-+AM_CPPFLAGS += -DINSTALLDIR=\"$(bindir)\"
-+
- # Parametrization of the 'libxml' module:
- # When building a shared library, don't export the variables
- # xmlMalloc, xmlMallocAtomic, xmlRealloc, xmlFree, xmlMemStrdup.

extlib/googletest/CMakeLists.txt

@@ -1,7 +1,7 @@
 # Note: CMake support is community-based. The maintainers do not use CMake
 # internally.
 
-cmake_minimum_required(VERSION 3.5)
+cmake_minimum_required(VERSION 3.5...3.10)
 
 if (POLICY CMP0048)
   cmake_policy(SET CMP0048 NEW)

extlib/googletest/googlemock/CMakeLists.txt

@@ -36,7 +36,7 @@ endif()
 # as ${gmock_SOURCE_DIR} and to the root binary directory as
 # ${gmock_BINARY_DIR}.
 # Language "C" is required for find_package(Threads).
-cmake_minimum_required(VERSION 3.5)
+cmake_minimum_required(VERSION 3.5...3.10)
 cmake_policy(SET CMP0048 NEW)
 project(gmock VERSION ${GOOGLETEST_VERSION} LANGUAGES CXX C)
 

extlib/googletest/googletest/CMakeLists.txt

@@ -46,7 +46,7 @@ endif()
 
 # Project version:
 
-cmake_minimum_required(VERSION 3.5)
+cmake_minimum_required(VERSION 3.5...3.10)
 cmake_policy(SET CMP0048 NEW)
 project(gtest VERSION ${GOOGLETEST_VERSION} LANGUAGES CXX C)
 

extlib/libpng/.cmake-format.yaml

@@ -0,0 +1,94 @@
+# https://pypi.org/project/cmakelang
+# https://github.com/cheshirekow/cmake_format
+
+# ----------------------
+# Options for formatting
+# ----------------------
+
+# How wide to allow formatted cmake files
+# TODO: Reflow the CMake files to allow setting the maximum line width to 100.
+line_width: 255
+
+# How many spaces to tab for indent
+tab_size: 2
+
+# If true, lines are indented using tab characters (utf-8 0x09) instead of
+# <tab_size> space characters (utf-8 0x20). In cases where the layout would
+# require a fractional tab character, the behavior of the fractional
+# indentation is governed by <fractional_tab_policy>
+use_tabchars: false
+
+# If <use_tabchars> is True, then the value of this variable indicates how
+# fractional indentions are handled during whitespace replacement. If set to
+# 'use-space', fractional indentation is left as spaces (utf-8 0x20). If set
+# to `round-up` fractional indentation is replaced with a single tab character
+# (utf-8 0x09) effectively shifting the column to the next tabstop
+fractional_tab_policy: "use-space"
+
+# Enable comment markup parsing and reflow
+enable_markup: false
+
+# -------------------
+# Options for linting
+# -------------------
+
+# Lint codes to disable
+disabled_codes: [
+  # TODO:
+  # Reconcile the CMake variable names with the patterns below, then
+  # re-enable the "invalid variable name XXX" messages.
+  "C0103",
+
+  # TODO:
+  # Add brief COMMENT arguments to the `add_custom_target` commands.
+  "C0113",
+]
+
+# Regular expression pattern describing valid function names
+function_pattern: "[0-9a-z_]+"
+
+# Regular expression pattern describing valid macro names
+macro_pattern: "[0-9A-Z_]+"
+
+# Regular expression pattern describing valid names for variables with global
+# (cache) scope
+global_var_pattern: "[A-Z][0-9A-Z_]+"
+
+# Regular expression pattern describing valid names for variables with global
+# scope (but internal semantic)
+internal_var_pattern: "_[A-Z][0-9A-Z_]+"
+
+# Regular expression pattern describing valid names for variables with local
+# scope
+local_var_pattern: "[a-z][a-z0-9_]+"
+
+# Regular expression pattern describing valid names for privatedirectory
+# variables
+private_var_pattern: "_[0-9a-z_]+"
+
+# Regular expression pattern describing valid names for public directory
+# variables
+public_var_pattern: "[A-Z][0-9A-Z_]+"
+
+# Regular expression pattern describing valid names for function/macro
+# arguments and loop variables.
+argument_var_pattern: "[a-z][a-z0-9_]+"
+
+# Regular expression pattern describing valid names for keywords used in
+# functions or macros
+keyword_pattern: "[A-Z][0-9A-Z_]+"
+
+# In the heuristic for C0201, how many conditionals to match within a loop in
+# before considering the loop a parser
+max_conditionals_custom_parser: 2
+
+# Require at least this many newlines between statements;
+# require no more than this many newlines between statements;
+# etc.
+min_statement_spacing: 1
+max_statement_spacing: 2
+max_returns: 6
+max_branches: 12
+max_arguments: 5
+max_localvars: 15
+max_statements: 50

extlib/libpng/ANNOUNCE

@@ -1,5 +1,5 @@
-libpng 1.6.47 - February 18, 2025
-=================================
+libpng 1.6.49 - June 12, 2025
+=============================
 
 This is a public release of libpng, intended for use in production code.
 
@@ -9,13 +9,13 @@ Files available for download
 
 Source files with LF line endings (for Unix/Linux):
 
- * libpng-1.6.47.tar.xz (LZMA-compressed, recommended)
- * libpng-1.6.47.tar.gz (deflate-compressed)
+ * libpng-1.6.49.tar.xz (LZMA-compressed, recommended)
+ * libpng-1.6.49.tar.gz (deflate-compressed)
 
 Source files with CRLF line endings (for Windows):
 
- * lpng1647.7z (LZMA-compressed, recommended)
- * lpng1647.zip (deflate-compressed)
+ * lpng1649.7z (LZMA-compressed, recommended)
+ * lpng1649.zip (deflate-compressed)
 
 Other information:
 
@@ -25,19 +25,13 @@ Other information:
  * TRADEMARK.md
 
 
-Changes from version 1.6.46 to version 1.6.47
+Changes from version 1.6.48 to version 1.6.49
 ---------------------------------------------
 
- * Modified the behaviour of colorspace chunks in order to adhere
-   to the new precedence rules formulated in the latest draft of
-   the PNG Specification.
-   (Contributed by John Bowler)
- * Fixed a latent bug in `png_write_iCCP`.
-   This would have been a read-beyond-end-of-malloc vulnerability,
-   introduced early in the libpng-1.6.0 development, yet (fortunately!)
-   it was inaccessible before the above-mentioned modification of the
-   colorspace precedence rules, due to pre-existing colorspace checks.
-   (Reported by Bob Friesenhahn; fixed by John Bowler)
+ * Added SIMD-optimized code for the RISC-V Vector Extension (RVV).
+   (Contributed by Manfred Schlaegl, Dragos Tiselice and Filip Wasil)
+ * Added various fixes and improvements to the build scripts and to
+   the sample code.
 
 
 Send comments/corrections/commendations to png-mng-implement at lists.sf.net.

extlib/libpng/AUTHORS

@@ -20,6 +20,7 @@ Authors, for copyright and licensing purposes.
  * Lucas Chollet
  * Magnus Holmgren
  * Mandar Sahastrabuddhe
+ * Manfred Schlaegl
  * Mans Rullgard
  * Matt Sarett
  * Mike Klein
@@ -40,8 +41,9 @@ Authors, for copyright and licensing purposes.
     - Zixu Wang (王子旭)
  * Arm Holdings
     - Richard Townsend
- * Google Inc.
+ * Google LLC
     - Dan Field
+    - Dragoș Tiselice
     - Leon Scroggins III
     - Matt Sarett
     - Mike Klein
@@ -51,6 +53,8 @@ Authors, for copyright and licensing purposes.
     - GuXiWei (顾希伟)
     - JinBo (金波)
     - ZhangLixia (张利霞)
+ * Samsung Group
+    - Filip Wasil
 
 The build projects, the build scripts, the test scripts, and other
 files in the "projects", "scripts" and "tests" directories, have

extlib/libpng/CHANGES

@@ -6251,6 +6251,22 @@ Version 1.6.47 [February 18, 2025]
     colorspace precedence rules, due to pre-existing colorspace checks.
     (Reported by Bob Friesenhahn; fixed by John Bowler)
 
+Version 1.6.48 [April 30, 2025]
+  Fixed the floating-point version of the mDCv setter `png_set_mDCv`.
+    (Reported by Mohit Bakshi; fixed by John Bowler)
+  Added #error directives to discourage the inclusion of private
+    libpng implementation header files in PNG-supporting applications.
+  Added the CMake build option `PNG_LIBCONF_HEADER`, to be used as an
+    alternative to `DFA_XTRA`.
+  Removed the Travis CI configuration files, with heartfelt thanks for
+    their generous support of our project over the past five years!
+
+Version 1.6.49 [June 12, 2025]
+  Added SIMD-optimized code for the RISC-V Vector Extension (RVV).
+    (Contributed by Manfred Schlaegl, Dragos Tiselice and Filip Wasil)
+  Added various fixes and improvements to the build scripts and to
+    the sample code.
+
 Send comments/corrections/commendations to png-mng-implement at lists.sf.net.
 Subscription is required; visit
 https://lists.sourceforge.net/lists/listinfo/png-mng-implement

extlib/libpng/CMakeLists.txt

@@ -1,4 +1,3 @@
-
 # CMakeLists.txt - CMake lists for libpng
 #
 # Copyright (c) 2018-2025 Cosmin Truta
@@ -16,13 +15,11 @@
 # SPDX-License-Identifier: libpng-2.0
 
 # rom-properties: Disabled; use the main project policies.
-IF(0)
-cmake_minimum_required(VERSION 3.14)
-ENDIF(0) # rom-properties
+#cmake_minimum_required(VERSION 3.14...4.0)
 
 set(PNGLIB_MAJOR 1)
 set(PNGLIB_MINOR 6)
-set(PNGLIB_REVISION 47)
+set(PNGLIB_REVISION 49)
 set(PNGLIB_SUBREVISION 0)
 #set(PNGLIB_SUBREVISION "git")
 set(PNGLIB_VERSION ${PNGLIB_MAJOR}.${PNGLIB_MINOR}.${PNGLIB_REVISION})
@@ -46,19 +43,39 @@ ENDIF(0) # rom-properties
 
 # Allow the users to specify an application-specific API prefix for libpng
 # vendoring purposes. A standard libpng build should have no such prefix.
-set(PNG_PREFIX ""
+set(PNG_PREFIX
+    ""
     CACHE STRING "Prefix to prepend to the API function names")
 
 # Allow the users to override the postfix appended to debug library file names.
 # Previously, we used to set CMAKE_DEBUG_POSTFIX globally. That variable should
 # not be cached, however, because doing so would affect all projects processed
 # after libpng, in unexpected and undesirable ways.
-set(PNG_DEBUG_POSTFIX "d"
+set(PNG_DEBUG_POSTFIX
+    "d"
     CACHE STRING "Postfix to append to library file names under the Debug configuration")
 
 # Allow the users to import their own extra configuration settings.
-set(DFA_XTRA ""
-    CACHE FILEPATH "File containing extra configuration settings")
+# Those settings can be either passed via DFA_XTRA if they are in DFA form
+# (such as "pngusr.dfa"), or via PNG_LIBCONF_HEADER if they are in prebuilt
+# header file form (such as "scripts/pnglibconf.h.prebuilt"), but not both.
+# For platforms such as Android or iOS, or in certain cross-platform build
+# scenarios, having a valid PNG_LIBCONF_HEADER is mandatory.
+set(DFA_XTRA
+    ""
+    CACHE FILEPATH "DFA file containing customized build configuration settings for libpng")
+set(PNG_LIBCONF_HEADER
+    ""
+    CACHE FILEPATH "C header file containing customized build configuration settings for libpng")
+set(PNG_LIBCONF_HEADER_PREBUILT "${CMAKE_CURRENT_SOURCE_DIR}/scripts/pnglibconf.h.prebuilt")
+if(ANDROID OR IOS)
+  set(PNG_LIBCONF_HEADER "${PNG_LIBCONF_HEADER_PREBUILT}")
+endif()
+if((NOT DFA_XTRA STREQUAL "") AND (NOT PNG_LIBCONF_HEADER STREQUAL ""))
+  message(SEND_ERROR "The options DFA_XTRA=\"${DFA_XTRA}\" "
+                     "and PNG_LIBCONF_HEADER=\"${PNG_LIBCONF_HEADER}\" "
+                     "are mutually exclusive")
+endif()
 
 # rom-properties: Hard-coded values in extlib are used.
 IF(0)
@@ -67,6 +84,11 @@ option(PNG_SHARED "Build libpng as a shared library" ON)
 option(PNG_STATIC "Build libpng as a static library" ON)
 if(APPLE)
   option(PNG_FRAMEWORK "Build libpng as a framework bundle" ON)
+else()
+  option(PNG_FRAMEWORK "Build libpng as a framework bundle (not available on this platform)" OFF)
+endif()
+if(NOT APPLE AND PNG_FRAMEWORK)
+  message(SEND_ERROR "The option PNG_FRAMEWORK should not be set on this platform")
 endif()
 
 # Allow the users to switch on/off the auxiliary build and test artifacts.
@@ -88,14 +110,13 @@ option(PNG_EXECUTABLES "[Deprecated; please use PNG_TOOLS]" ON)
 if(NOT PNG_EXECUTABLES)
   message(DEPRECATION "The option PNG_EXECUTABLES has been deprecated in favour of PNG_TOOLS")
   if(PNG_TOOLS)
-    message(AUTHOR_WARNING
-            "Setting PNG_TOOLS to ${PNG_EXECUTABLES}, to stay compatible with PNG_EXECUTABLES")
+    message(AUTHOR_WARNING "Setting PNG_TOOLS to ${PNG_EXECUTABLES}, "
+                           "to stay compatible with PNG_EXECUTABLES")
     set(PNG_TOOLS "${PNG_EXECUTABLES}")
   endif()
 endif()
 
-# Allow the users to configure various compilation options.
-option(PNG_DEBUG "Enable debug output" OFF)
+# Allow the users to switch on/off the use of hardware (SIMD) optimized code.
 option(PNG_HARDWARE_OPTIMIZATIONS "Enable hardware optimizations" ON)
 ENDIF(0) # rom-properties
 
@@ -123,19 +144,21 @@ ENDIF(0) # rom-properties
 
 if(PNG_BUILD_ZLIB)
   if("x${ZLIB_ROOT}" STREQUAL "x")
-    #message(SEND_ERROR
-    message(DEPRECATION
-            "The option PNG_BUILD_ZLIB=${PNG_BUILD_ZLIB} is no longer supported; "
-            "please use ZLIB_ROOT instead")
+    #message(SEND_ERROR "The option PNG_BUILD_ZLIB=${PNG_BUILD_ZLIB} is no longer supported; "
+    #                   "please use ZLIB_ROOT instead")
+    message(DEPRECATION "The option PNG_BUILD_ZLIB=${PNG_BUILD_ZLIB} is no longer supported; "
+                       "please use ZLIB_ROOT instead")
   else()
-    message(SEND_ERROR
-            "The option PNG_BUILD_ZLIB=${PNG_BUILD_ZLIB} is no longer supported; "
-            "using ZLIB_ROOT=\"${ZLIB_ROOT}\"")
+    #message(SEND_ERROR "The option PNG_BUILD_ZLIB=${PNG_BUILD_ZLIB} is no longer supported; "
+    #                   "using ZLIB_ROOT=\"${ZLIB_ROOT}\"")
+    message(DEPRECATION "The option PNG_BUILD_ZLIB=${PNG_BUILD_ZLIB} is no longer supported; "
+                       "using ZLIB_ROOT=\"${ZLIB_ROOT}\"")
   endif()
 else()
   find_package(ZLIB REQUIRED)
 endif()
 
+# Find the math library (where available).
 if(UNIX
    AND NOT (APPLE OR BEOS OR HAIKU)
    AND NOT EMSCRIPTEN)
@@ -149,21 +172,30 @@ else()
   # libm is not available or not needed.
 endif()
 
+# Silence function deprecation warnings on the Windows compilers that might
+# use the MSVC Runtime library headers.
+if(WIN32 AND (CMAKE_C_COMPILER_ID MATCHES "MSVC|Intel|Clang"))
+  add_definitions(-D_CRT_NONSTDC_NO_DEPRECATE)
+  add_definitions(-D_CRT_SECURE_NO_DEPRECATE)
+endif()
+
 if(PNG_HARDWARE_OPTIMIZATIONS)
 
   # Set definitions and sources for ARM.
   if(PNG_TARGET_ARCHITECTURE MATCHES "^(arm|aarch)")
     if(PNG_TARGET_ARCHITECTURE MATCHES "^(arm64|aarch64)")
       set(PNG_ARM_NEON_POSSIBLE_VALUES on off)
-      set(PNG_ARM_NEON "on"
+      set(PNG_ARM_NEON
+          "on"
           CACHE STRING "Enable ARM NEON optimizations: on|off; on is default")
     else()
       set(PNG_ARM_NEON_POSSIBLE_VALUES check on off)
-      set(PNG_ARM_NEON "off"
+      set(PNG_ARM_NEON
+          "off"
           CACHE STRING "Enable ARM NEON optimizations: check|on|off; off is default")
     endif()
     set_property(CACHE PNG_ARM_NEON
-                PROPERTY STRINGS ${PNG_ARM_NEON_POSSIBLE_VALUES})
+                 PROPERTY STRINGS ${PNG_ARM_NEON_POSSIBLE_VALUES})
     list(FIND PNG_ARM_NEON_POSSIBLE_VALUES ${PNG_ARM_NEON} index)
     if(index EQUAL -1)
       message(FATAL_ERROR "PNG_ARM_NEON must be one of [${PNG_ARM_NEON_POSSIBLE_VALUES}]")
@@ -185,10 +217,11 @@ if(PNG_HARDWARE_OPTIMIZATIONS)
   # Set definitions and sources for PowerPC.
   if(PNG_TARGET_ARCHITECTURE MATCHES "^(powerpc|ppc64)")
     set(PNG_POWERPC_VSX_POSSIBLE_VALUES on off)
-    set(PNG_POWERPC_VSX "on"
+    set(PNG_POWERPC_VSX
+        "on"
         CACHE STRING "Enable POWERPC VSX optimizations: on|off; on is default")
     set_property(CACHE PNG_POWERPC_VSX
-                PROPERTY STRINGS ${PNG_POWERPC_VSX_POSSIBLE_VALUES})
+                 PROPERTY STRINGS ${PNG_POWERPC_VSX_POSSIBLE_VALUES})
     list(FIND PNG_POWERPC_VSX_POSSIBLE_VALUES ${PNG_POWERPC_VSX} index)
     if(index EQUAL -1)
       message(FATAL_ERROR "PNG_POWERPC_VSX must be one of [${PNG_POWERPC_VSX_POSSIBLE_VALUES}]")
@@ -207,10 +240,11 @@ if(PNG_HARDWARE_OPTIMIZATIONS)
   # Set definitions and sources for Intel.
   if(PNG_TARGET_ARCHITECTURE MATCHES "^(i[3-6]86|x86|amd64)")
     set(PNG_INTEL_SSE_POSSIBLE_VALUES on off)
-    set(PNG_INTEL_SSE "on"
+    set(PNG_INTEL_SSE
+        "on"
         CACHE STRING "Enable INTEL_SSE optimizations: on|off; on is default")
     set_property(CACHE PNG_INTEL_SSE
-                PROPERTY STRINGS ${PNG_INTEL_SSE_POSSIBLE_VALUES})
+                 PROPERTY STRINGS ${PNG_INTEL_SSE_POSSIBLE_VALUES})
     list(FIND PNG_INTEL_SSE_POSSIBLE_VALUES ${PNG_INTEL_SSE} index)
     if(index EQUAL -1)
       message(FATAL_ERROR "PNG_INTEL_SSE must be one of [${PNG_INTEL_SSE_POSSIBLE_VALUES}]")
@@ -258,20 +292,22 @@ if(PNG_HARDWARE_OPTIMIZATIONS)
   # Set definitions and sources for MIPS.
   if(PNG_TARGET_ARCHITECTURE MATCHES "^(mipsel|mips64el)")
     set(PNG_MIPS_MSA_POSSIBLE_VALUES on off)
-    set(PNG_MIPS_MSA "on"
+    set(PNG_MIPS_MSA
+        "on"
         CACHE STRING "Enable MIPS_MSA optimizations: on|off; on is default")
     set_property(CACHE PNG_MIPS_MSA
-                PROPERTY STRINGS ${PNG_MIPS_MSA_POSSIBLE_VALUES})
+                 PROPERTY STRINGS ${PNG_MIPS_MSA_POSSIBLE_VALUES})
     list(FIND PNG_MIPS_MSA_POSSIBLE_VALUES ${PNG_MIPS_MSA} index_msa)
     if(index_msa EQUAL -1)
       message(FATAL_ERROR "PNG_MIPS_MSA must be one of [${PNG_MIPS_MSA_POSSIBLE_VALUES}]")
     endif()
 
     set(PNG_MIPS_MMI_POSSIBLE_VALUES on off)
-    set(PNG_MIPS_MMI "on"
+    set(PNG_MIPS_MMI
+        "on"
         CACHE STRING "Enable MIPS_MMI optimizations: on|off; on is default")
     set_property(CACHE PNG_MIPS_MMI
-                PROPERTY STRINGS ${PNG_MIPS_MMI_POSSIBLE_VALUES})
+                 PROPERTY STRINGS ${PNG_MIPS_MMI_POSSIBLE_VALUES})
     list(FIND PNG_MIPS_MMI_POSSIBLE_VALUES ${PNG_MIPS_MMI} index_mmi)
     if(index_mmi EQUAL -1)
       message(FATAL_ERROR "PNG_MIPS_MMI must be one of [${PNG_MIPS_MMI_POSSIBLE_VALUES}]")
@@ -306,31 +342,60 @@ if(PNG_HARDWARE_OPTIMIZATIONS)
   if(PNG_TARGET_ARCHITECTURE MATCHES "^(loongarch)")
     include(CheckCCompilerFlag)
     set(PNG_LOONGARCH_LSX_POSSIBLE_VALUES on off)
-    set(PNG_LOONGARCH_LSX "on"
+    set(PNG_LOONGARCH_LSX
+        "on"
         CACHE STRING "Enable LOONGARCH_LSX optimizations: on|off; on is default")
     set_property(CACHE PNG_LOONGARCH_LSX
-                PROPERTY STRINGS ${PNG_LOONGARCH_LSX_POSSIBLE_VALUES})
+                 PROPERTY STRINGS ${PNG_LOONGARCH_LSX_POSSIBLE_VALUES})
     list(FIND PNG_LOONGARCH_LSX_POSSIBLE_VALUES ${PNG_LOONGARCH_LSX} index)
     if(index EQUAL -1)
       message(FATAL_ERROR "PNG_LOONGARCH_LSX must be one of [${PNG_LOONGARCH_LSX_POSSIBLE_VALUES}]")
     elseif(NOT PNG_LOONGARCH_LSX STREQUAL "off")
-      CHECK_C_COMPILER_FLAG("-mlsx" COMPILER_SUPPORTS_LSX)
+      check_c_compiler_flag("-mlsx" COMPILER_SUPPORTS_LSX)
       if(COMPILER_SUPPORTS_LSX)
         set(libpng_loongarch_sources
             loongarch/loongarch_lsx_init.c
             loongarch/filter_lsx_intrinsics.c)
         set_source_files_properties(${libpng_loongarch_sources}
-                                    PROPERTIES
-                                    COMPILE_FLAGS "-mlsx")
+                                    PROPERTIES COMPILE_FLAGS "-mlsx")
         add_definitions(-DPNG_LOONGARCH_LSX_OPT=1)
       else()
-        message(FATAL_ERROR "Compiler does not support -mlsx option")
+        message(FATAL_ERROR "This compiler does not support the -mlsx option")
       endif()
     else()
       add_definitions(-DPNG_LOONGARCH_LSX_OPT=0)
     endif()
   endif()
 
+  # Set definitions and sources for RISC-V.
+  if(PNG_TARGET_ARCHITECTURE MATCHES "^(riscv)")
+    include(CheckCCompilerFlag)
+    set(PNG_RISCV_RVV_POSSIBLE_VALUES check on off)
+    set(PNG_RISCV_RVV "off"
+      CACHE STRING "Enable RISC-V Vector optimizations: check|on|off; off is default")
+    set_property(CACHE PNG_RISCV_RVV
+                PROPERTY STRINGS ${PNG_RISCV_RVV_POSSIBLE_VALUES})
+    list(FIND PNG_RISCV_RVV_POSSIBLE_VALUES ${PNG_RISCV_RVV} index)
+    if(index EQUAL -1)
+      message(FATAL_ERROR "PNG_RISCV_RVV must be one of [${PNG_RISCV_RVV_POSSIBLE_VALUES}]")
+    elseif(NOT PNG_RISCV_RVV STREQUAL "off")
+      check_c_compiler_flag("-march=rv64gv1p0" COMPILER_SUPPORTS_RVV)
+      if(NOT COMPILER_SUPPORTS_RVV)
+        message(FATAL_ERROR "Compiler does not support -march=rv64gv1p0 option")
+      endif()
+      set(libpng_riscv_sources
+          riscv/filter_rvv_intrinsics.c
+          riscv/riscv_init.c)
+      if(PNG_RISCV_RVV STREQUAL "on")
+        add_definitions(-DPNG_RISCV_RVV_OPT=2)
+      elseif(PNG_RISCV_RVV STREQUAL "check")
+        add_definitions(-DPNG_RISCV_RVV_CHECK_SUPPORTED)
+      endif()
+    else()
+      add_definitions(-DPNG_RISCV_RVV_OPT=0)
+    endif()
+  endif()
+
 else(PNG_HARDWARE_OPTIMIZATIONS)
 
   # Set definitions and sources for ARM.
@@ -358,6 +423,11 @@ else(PNG_HARDWARE_OPTIMIZATIONS)
     add_definitions(-DPNG_LOONGARCH_LSX_OPT=0)
   endif()
 
+  # Set definitions and sources for RISC-V.
+  if(PNG_TARGET_ARCHITECTURE MATCHES "^(riscv)")
+    add_definitions(-DPNG_RISCV_RVV_OPT=0)
+  endif()
+
 endif(PNG_HARDWARE_OPTIMIZATIONS)
 
 option(ld-version-script "Enable linker version script" ON)
@@ -373,7 +443,8 @@ VERS_2 { global: sym2; main; } VERS_1;
     # Solaris, because of an incompatibility with the Solaris link editor.
     list(APPEND CMAKE_REQUIRED_FLAGS ${CMAKE_SHARED_LIBRARY_C_FLAGS})
   endif()
-  list(APPEND CMAKE_REQUIRED_FLAGS "-Wl,--version-script='${CMAKE_CURRENT_BINARY_DIR}/conftest.map'")
+  list(APPEND CMAKE_REQUIRED_FLAGS
+              "-Wl,--version-script='${CMAKE_CURRENT_BINARY_DIR}/conftest.map'")
   check_c_source_compiles("
 void sym1(void) {}
 void sym2(void) {}
@@ -397,54 +468,72 @@ int main(void) { return 0; }
   file(REMOVE "${CMAKE_CURRENT_BINARY_DIR}/conftest.map")
 endif()
 
-# Find an AWK language processor.
-# Start with specific AWK implementations like gawk and nawk, which are
-# known to work with our scripts, then fall back to the system awk.
-find_program(AWK NAMES gawk nawk awk)
-if(AWK)
-  message(STATUS "Found AWK program: ${AWK}")
-else()
-  message(STATUS "Could not find an AWK-compatible program")
+if(PNG_LIBCONF_HEADER STREQUAL "")
+  # No custom configuration header file has been specified, so we build it
+  # from our DFA files and (optionally) out of the user-supplied DFA file.
+  # Find an AWK language processor.
+  # Start with specific AWK implementations like gawk and nawk, which are
+  # known to work with our scripts, then fall back to the system awk.
+  find_program(AWK NAMES gawk nawk awk)
+  if(AWK)
+    message(STATUS "Found AWK program: ${AWK}")
+  else()
+    message(STATUS "Could not find an AWK-compatible program")
+  endif()
 endif()
 
-if(NOT AWK OR (ANDROID OR IOS))
-  # No awk available to generate sources; use pre-built pnglibconf.h
-  configure_file(${CMAKE_CURRENT_SOURCE_DIR}/scripts/pnglibconf.h.prebuilt
-                 ${CMAKE_CURRENT_BINARY_DIR}/pnglibconf.h)
+# Include the internal module PNGCheckLibconf.cmake
+include("${CMAKE_CURRENT_SOURCE_DIR}/scripts/cmake/PNGCheckLibconf.cmake")
+
+if(NOT PNG_LIBCONF_HEADER STREQUAL "")
+  # Configure libpng with the user-defined pnglibconf.h file.
+  png_check_libconf(HEADER "${PNG_LIBCONF_HEADER}")
+  configure_file("${PNG_LIBCONF_HEADER}"
+                 "${CMAKE_CURRENT_BINARY_DIR}/pnglibconf.h"
+                 @ONLY)
+  add_custom_target(png_genfiles)
+elseif(NOT AWK)
+  # No AWK program available to generate pnglibconf.h.
+  # Configure libpng with pnglibconf.h.prebuilt.
+  png_check_libconf(HEADER "${PNG_LIBCONF_HEADER_PREBUILT}")
+  configure_file("${PNG_LIBCONF_HEADER_PREBUILT}"
+                 "${CMAKE_CURRENT_BINARY_DIR}/pnglibconf.h"
+                 @ONLY)
   add_custom_target(png_genfiles)
 else()
-  # Include the internal module PNGGenConfig.cmake
-  include(${CMAKE_CURRENT_SOURCE_DIR}/scripts/cmake/PNGGenConfig.cmake)
+  png_check_libconf(DFA_XTRA "${DFA_XTRA}")
 
-  # Copy the awk scripts, converting their line endings to Unix (LF)
-  configure_file(${CMAKE_CURRENT_SOURCE_DIR}/scripts/checksym.awk
-                 ${CMAKE_CURRENT_BINARY_DIR}/scripts/checksym.awk
+  # Include the internal module PNGGenConfig.cmake
+  include("${CMAKE_CURRENT_SOURCE_DIR}/scripts/cmake/PNGGenConfig.cmake")
+
+  # Work around a limitation of various Windows AWK programs that are
+  # unable to process CRLF-terminated AWK scripts.
+  # Copy these AWK scripts to a temporary location, converting their
+  # line endings from Windows (CRLF) to Unix (LF) at the destination.
+  configure_file("${CMAKE_CURRENT_SOURCE_DIR}/scripts/checksym.awk"
+                 "${CMAKE_CURRENT_BINARY_DIR}/scripts/checksym.awk"
                  @ONLY
                  NEWLINE_STYLE LF)
-  configure_file(${CMAKE_CURRENT_SOURCE_DIR}/scripts/options.awk
-                 ${CMAKE_CURRENT_BINARY_DIR}/scripts/options.awk
+  configure_file("${CMAKE_CURRENT_SOURCE_DIR}/scripts/options.awk"
+                 "${CMAKE_CURRENT_BINARY_DIR}/scripts/options.awk"
                  @ONLY
                  NEWLINE_STYLE LF)
-  configure_file(${CMAKE_CURRENT_SOURCE_DIR}/scripts/dfn.awk
-                 ${CMAKE_CURRENT_BINARY_DIR}/scripts/dfn.awk
+  configure_file("${CMAKE_CURRENT_SOURCE_DIR}/scripts/dfn.awk"
+                 "${CMAKE_CURRENT_BINARY_DIR}/scripts/dfn.awk"
                  @ONLY
                  NEWLINE_STYLE LF)
 
   # Generate scripts/pnglibconf.h
-  generate_source(OUTPUT "scripts/pnglibconf.c"
+  generate_source(OUTPUT "${CMAKE_CURRENT_BINARY_DIR}/scripts/pnglibconf.c"
                   DEPENDS "${CMAKE_CURRENT_SOURCE_DIR}/scripts/pnglibconf.dfa"
                           "${CMAKE_CURRENT_BINARY_DIR}/scripts/options.awk"
                           "${CMAKE_CURRENT_SOURCE_DIR}/pngconf.h")
-  add_custom_target(png_scripts_pnglibconf_c
-                    DEPENDS "${CMAKE_CURRENT_BINARY_DIR}/scripts/pnglibconf.c")
 
   # Generate pnglibconf.c
-  generate_source(OUTPUT "pnglibconf.c"
+  generate_source(OUTPUT "${CMAKE_CURRENT_BINARY_DIR}/pnglibconf.c"
                   DEPENDS "${CMAKE_CURRENT_SOURCE_DIR}/scripts/pnglibconf.dfa"
                           "${CMAKE_CURRENT_BINARY_DIR}/scripts/options.awk"
                           "${CMAKE_CURRENT_SOURCE_DIR}/pngconf.h")
-  add_custom_target(pnglibconf_c
-                    DEPENDS "${CMAKE_CURRENT_BINARY_DIR}/pnglibconf.c")
 
   if(PNG_PREFIX)
     set(PNGLIBCONF_H_EXTRA_DEPENDS
@@ -455,80 +544,53 @@ else()
   endif()
 
   generate_out(INPUT "${CMAKE_CURRENT_BINARY_DIR}/pnglibconf.c"
-               OUTPUT "${CMAKE_CURRENT_BINARY_DIR}/pnglibconf.out"
-               DEPENDS pnglibconf_c)
-  add_custom_target(pnglibconf_out
-                    DEPENDS "${CMAKE_CURRENT_BINARY_DIR}/pnglibconf.out")
+               OUTPUT "${CMAKE_CURRENT_BINARY_DIR}/pnglibconf.out")
 
   # Generate pnglibconf.h
-  generate_source(OUTPUT "pnglibconf.h"
-                  DEPENDS "${CMAKE_CURRENT_BINARY_DIR}/pnglibconf.out" pnglibconf_out
+  generate_source(OUTPUT "${CMAKE_CURRENT_BINARY_DIR}/pnglibconf.h"
+                  DEPENDS "${CMAKE_CURRENT_BINARY_DIR}/pnglibconf.out"
                           ${PNGLIBCONF_H_EXTRA_DEPENDS})
-  add_custom_target(pnglibconf_h
-                    DEPENDS "${CMAKE_CURRENT_BINARY_DIR}/pnglibconf.h")
 
   generate_out(INPUT "${CMAKE_CURRENT_SOURCE_DIR}/scripts/intprefix.c"
                OUTPUT "${CMAKE_CURRENT_BINARY_DIR}/scripts/intprefix.out"
-               DEPENDS "${CMAKE_CURRENT_BINARY_DIR}/pnglibconf.h" pnglibconf_h)
-  add_custom_target(png_scripts_intprefix_out
-                    DEPENDS "${CMAKE_CURRENT_BINARY_DIR}/scripts/intprefix.out")
+               DEPENDS "${CMAKE_CURRENT_BINARY_DIR}/pnglibconf.h")
 
   generate_out(INPUT "${CMAKE_CURRENT_SOURCE_DIR}/scripts/prefix.c"
                OUTPUT "${CMAKE_CURRENT_BINARY_DIR}/scripts/prefix.out"
                DEPENDS "${CMAKE_CURRENT_SOURCE_DIR}/png.h"
                        "${CMAKE_CURRENT_SOURCE_DIR}/pngconf.h"
-                       "${CMAKE_CURRENT_BINARY_DIR}/pnglibconf.out" pnglibconf_out)
-  add_custom_target(png_scripts_prefix_out
-                    DEPENDS "${CMAKE_CURRENT_BINARY_DIR}/scripts/prefix.out")
+                       "${CMAKE_CURRENT_BINARY_DIR}/pnglibconf.out")
 
   # Generate pngprefix.h
-  generate_source(OUTPUT "pngprefix.h"
+  generate_source(OUTPUT "${CMAKE_CURRENT_BINARY_DIR}/pngprefix.h"
                   DEPENDS ${PNGPREFIX_H_EXTRA_DEPENDS})
-  add_custom_target(pngprefix_h
-                    DEPENDS "${CMAKE_CURRENT_BINARY_DIR}/pngprefix.h")
 
   generate_out(INPUT "${CMAKE_CURRENT_SOURCE_DIR}/scripts/sym.c"
                OUTPUT "${CMAKE_CURRENT_BINARY_DIR}/scripts/sym.out"
-               DEPENDS "${CMAKE_CURRENT_BINARY_DIR}/pnglibconf.h" pnglibconf_h)
-  add_custom_target(png_scripts_sym_out
-                    DEPENDS "${CMAKE_CURRENT_BINARY_DIR}/scripts/sym.out")
+               DEPENDS "${CMAKE_CURRENT_BINARY_DIR}/pnglibconf.h")
 
   generate_out(INPUT "${CMAKE_CURRENT_SOURCE_DIR}/scripts/symbols.c"
                OUTPUT "${CMAKE_CURRENT_BINARY_DIR}/scripts/symbols.out"
                DEPENDS "${CMAKE_CURRENT_SOURCE_DIR}/png.h"
                        "${CMAKE_CURRENT_SOURCE_DIR}/pngconf.h"
                        "${CMAKE_CURRENT_SOURCE_DIR}/scripts/pnglibconf.h.prebuilt")
-  add_custom_target(png_scripts_symbols_out
-                    DEPENDS "${CMAKE_CURRENT_BINARY_DIR}/scripts/symbols.out")
 
   generate_out(INPUT "${CMAKE_CURRENT_SOURCE_DIR}/scripts/vers.c"
                OUTPUT "${CMAKE_CURRENT_BINARY_DIR}/scripts/vers.out"
                DEPENDS "${CMAKE_CURRENT_SOURCE_DIR}/png.h"
                        "${CMAKE_CURRENT_SOURCE_DIR}/pngconf.h"
-                       "${CMAKE_CURRENT_BINARY_DIR}/pnglibconf.h" pnglibconf_h)
-  add_custom_target(png_scripts_vers_out
-                    DEPENDS "${CMAKE_CURRENT_BINARY_DIR}/scripts/vers.out")
+                       "${CMAKE_CURRENT_BINARY_DIR}/pnglibconf.h")
 
   generate_chk(INPUT "${CMAKE_CURRENT_BINARY_DIR}/scripts/symbols.out"
                OUTPUT "${CMAKE_CURRENT_BINARY_DIR}/scripts/symbols.chk"
-               DEPENDS png_scripts_symbols_out
-                       "${CMAKE_CURRENT_BINARY_DIR}/scripts/checksym.awk"
+               DEPENDS "${CMAKE_CURRENT_BINARY_DIR}/scripts/checksym.awk"
                        "${CMAKE_CURRENT_SOURCE_DIR}/scripts/symbols.def")
 
-  add_custom_target(png_scripts_symbols_chk
-                    DEPENDS "${CMAKE_CURRENT_BINARY_DIR}/scripts/symbols.chk")
-
   generate_copy(INPUT "${CMAKE_CURRENT_BINARY_DIR}/scripts/sym.out"
-                OUTPUT "${CMAKE_CURRENT_BINARY_DIR}/libpng.sym"
-                DEPENDS png_scripts_sym_out)
-  generate_copy(INPUT "${CMAKE_CURRENT_BINARY_DIR}/scripts/vers.out"
-                OUTPUT "${CMAKE_CURRENT_BINARY_DIR}/libpng.vers"
-                DEPENDS png_scripts_vers_out)
+                OUTPUT "${CMAKE_CURRENT_BINARY_DIR}/libpng.sym")
 
-  add_custom_target(png_genvers
-                    DEPENDS "${CMAKE_CURRENT_BINARY_DIR}/libpng.vers")
-  add_custom_target(png_gensym
-                    DEPENDS "${CMAKE_CURRENT_BINARY_DIR}/libpng.sym")
+  generate_copy(INPUT "${CMAKE_CURRENT_BINARY_DIR}/scripts/vers.out"
+                OUTPUT "${CMAKE_CURRENT_BINARY_DIR}/libpng.vers")
 
   add_custom_target(png_genprebuilt
                     COMMAND "${CMAKE_COMMAND}"
@@ -538,20 +600,20 @@ else()
 
   # A single target handles generation of all generated files.
   add_custom_target(png_genfiles
-                    DEPENDS "${CMAKE_CURRENT_BINARY_DIR}/libpng.sym" png_gensym
-                            "${CMAKE_CURRENT_BINARY_DIR}/libpng.vers" png_genvers
-                            "${CMAKE_CURRENT_BINARY_DIR}/pnglibconf.c" pnglibconf_c
-                            "${CMAKE_CURRENT_BINARY_DIR}/pnglibconf.h" pnglibconf_h
-                            "${CMAKE_CURRENT_BINARY_DIR}/pnglibconf.out" pnglibconf_out
-                            "${CMAKE_CURRENT_BINARY_DIR}/pngprefix.h" pngprefix_h
-                            "${CMAKE_CURRENT_BINARY_DIR}/scripts/intprefix.out" png_scripts_intprefix_out
-                            "${CMAKE_CURRENT_BINARY_DIR}/scripts/pnglibconf.c" png_scripts_pnglibconf_c
-                            "${CMAKE_CURRENT_BINARY_DIR}/scripts/prefix.out" png_scripts_prefix_out
-                            "${CMAKE_CURRENT_BINARY_DIR}/scripts/sym.out" png_scripts_sym_out
-                            "${CMAKE_CURRENT_BINARY_DIR}/scripts/symbols.chk" png_scripts_symbols_chk
-                            "${CMAKE_CURRENT_BINARY_DIR}/scripts/symbols.out" png_scripts_symbols_out
-                            "${CMAKE_CURRENT_BINARY_DIR}/scripts/vers.out" png_scripts_vers_out)
-endif(NOT AWK OR (ANDROID OR IOS))
+                    DEPENDS "${CMAKE_CURRENT_BINARY_DIR}/libpng.sym"
+                            "${CMAKE_CURRENT_BINARY_DIR}/libpng.vers"
+                            "${CMAKE_CURRENT_BINARY_DIR}/pnglibconf.c"
+                            "${CMAKE_CURRENT_BINARY_DIR}/pnglibconf.h"
+                            "${CMAKE_CURRENT_BINARY_DIR}/pnglibconf.out"
+                            "${CMAKE_CURRENT_BINARY_DIR}/pngprefix.h"
+                            "${CMAKE_CURRENT_BINARY_DIR}/scripts/intprefix.out"
+                            "${CMAKE_CURRENT_BINARY_DIR}/scripts/pnglibconf.c"
+                            "${CMAKE_CURRENT_BINARY_DIR}/scripts/prefix.out"
+                            "${CMAKE_CURRENT_BINARY_DIR}/scripts/sym.out"
+                            "${CMAKE_CURRENT_BINARY_DIR}/scripts/symbols.chk"
+                            "${CMAKE_CURRENT_BINARY_DIR}/scripts/symbols.out"
+                            "${CMAKE_CURRENT_BINARY_DIR}/scripts/vers.out")
+endif()
 
 # List the source code files.
 set(libpng_public_hdrs
@@ -565,7 +627,7 @@ set(libpng_private_hdrs
     pnginfo.h
     pngstruct.h
 )
-if(AWK AND NOT (ANDROID OR IOS))
+if(AWK)
   list(APPEND libpng_private_hdrs "${CMAKE_CURRENT_BINARY_DIR}/pngprefix.h")
 endif()
 set(libpng_sources
@@ -591,7 +653,9 @@ set(libpng_sources
     ${libpng_mips_sources}
     ${libpng_powerpc_sources}
     ${libpng_loongarch_sources}
+    ${libpng_riscv_sources}
 )
+
 set(pngtest_sources
     pngtest.c
 )
@@ -614,10 +678,13 @@ set(png_fix_itxt_sources
     contrib/tools/png-fix-itxt.c
 )
 
-if(MSVC OR (WIN32 AND (CMAKE_C_COMPILER_ID MATCHES "Clang")))
-  add_definitions(-D_CRT_NONSTDC_NO_DEPRECATE)
-  add_definitions(-D_CRT_SECURE_NO_DEPRECATE)
-endif()
+# rom-properties: FIXME: "/guard:cf" causes png_longjmp() to crash
+# in MSVC 2022 Release builds on Windows 10.
+IF(MSVC)
+  FOREACH(_var CMAKE_C_FLAGS CMAKE_CXX_FLAGS CMAKE_EXE_LINKER_FLAGS CMAKE_SHARED_LINKER_FLAGS CMAKE_MODULE_LINKER_FLAGS)
+    STRING(REPLACE "/guard:cf" "" ${_var} "${${${_var}}}")
+  ENDFOREACH(_var)
+ENDIF(MSVC)
 
 # rom-properties: Add -DPNG_DEBUG=0 in debug builds.
 IF(0)
@@ -663,11 +730,11 @@ if(PNG_SHARED)
   add_library(png_shared SHARED ${libpng_sources})
   add_dependencies(png_shared png_genfiles)
   list(APPEND PNG_LIBRARY_TARGETS png_shared)
-  set_target_properties(png_shared PROPERTIES
-                        OUTPUT_NAME "${PNG_SHARED_OUTPUT_NAME}"
-                        DEBUG_POSTFIX "${PNG_DEBUG_POSTFIX}"
-                        VERSION "${PNGLIB_SHARED_VERSION}"
-                        SOVERSION "${PNGLIB_ABI_VERSION}")
+  set_target_properties(png_shared
+                        PROPERTIES OUTPUT_NAME "${PNG_SHARED_OUTPUT_NAME}"
+                                   DEBUG_POSTFIX "${PNG_DEBUG_POSTFIX}"
+                                   VERSION "${PNGLIB_SHARED_VERSION}"
+                                   SOVERSION "${PNGLIB_ABI_VERSION}")
 
   # rom-properties: Split debug functionality; Windows subsystem.
   DO_SPLIT_DEBUG(png_shared)
@@ -675,33 +742,37 @@ if(PNG_SHARED)
 
   if(UNIX AND AWK)
     if(HAVE_LD_VERSION_SCRIPT)
-      set_target_properties(png_shared PROPERTIES
-                            LINK_FLAGS "-Wl,--version-script='${CMAKE_CURRENT_BINARY_DIR}/libpng.vers'")
+      set_target_properties(png_shared
+                            PROPERTIES LINK_FLAGS "-Wl,--version-script='${CMAKE_CURRENT_BINARY_DIR}/libpng.vers'")
     elseif(HAVE_SOLARIS_LD_VERSION_SCRIPT)
-      set_target_properties(png_shared PROPERTIES
-                            LINK_FLAGS "-Wl,-M -Wl,'${CMAKE_CURRENT_BINARY_DIR}/libpng.vers'")
+      set_target_properties(png_shared
+                            PROPERTIES LINK_FLAGS "-Wl,-M -Wl,'${CMAKE_CURRENT_BINARY_DIR}/libpng.vers'")
     endif()
   endif()
   if(APPLE)
     # Avoid CMake's implicit compile definition "png_shared_EXPORTS".
-    set_target_properties(png_shared PROPERTIES DEFINE_SYMBOL "")
+    set_target_properties(png_shared
+                          PROPERTIES DEFINE_SYMBOL "")
   elseif(WIN32)
     # rom-properties: Set PNG_USE_DLL to use dllimport.
     # Use the explicit compile definition "PNG_BUILD_DLL" for Windows DLLs.
-    #set_target_properties(png_shared PROPERTIES DEFINE_SYMBOL PNG_BUILD_DLL)
+    #set_target_properties(png_shared
+    #                      PROPERTIES DEFINE_SYMBOL PNG_BUILD_DLL)
     target_compile_definitions(png_shared
       PRIVATE -DPNG_BUILD_DLL
       INTERFACE -DPNG_USE_DLL
       )
   endif()
   target_include_directories(png_shared
-                             PUBLIC $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}>)
+                             PUBLIC "$<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}>")
   target_include_directories(png_shared
-                             PUBLIC $<BUILD_INTERFACE:${CMAKE_CURRENT_BINARY_DIR}>)
-  target_include_directories(png_shared SYSTEM
-                             INTERFACE $<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}/libpng${PNGLIB_ABI_VERSION}>)
+                             PUBLIC "$<BUILD_INTERFACE:${CMAKE_CURRENT_BINARY_DIR}>")
+  target_include_directories(png_shared
+                             SYSTEM
+                             INTERFACE "$<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}/libpng${PNGLIB_ABI_VERSION}>")
   # rom-properties: ZLIB::ZLIB -> ${ZLIB_LIBRARY}
-  target_link_libraries(png_shared PUBLIC ${ZLIB_LIBRARY} ${M_LIBRARY})
+  target_link_libraries(png_shared
+                        PUBLIC ${ZLIB_LIBRARY} ${M_LIBRARY})
 endif()
 
 if(PNG_STATIC)
@@ -713,24 +784,25 @@ if(PNG_STATIC)
   add_library(png_static STATIC ${libpng_sources})
   add_dependencies(png_static png_genfiles)
   list(APPEND PNG_LIBRARY_TARGETS png_static)
-  set_target_properties(png_static PROPERTIES
-                        OUTPUT_NAME "${PNG_STATIC_OUTPUT_NAME}"
-                        DEBUG_POSTFIX "${PNG_DEBUG_POSTFIX}")
+  set_target_properties(png_static
+                        PROPERTIES OUTPUT_NAME "${PNG_STATIC_OUTPUT_NAME}"
+                                   DEBUG_POSTFIX "${PNG_DEBUG_POSTFIX}")
   target_include_directories(png_static
-                             PUBLIC $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}>)
+                             PUBLIC "$<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}>")
   target_include_directories(png_static
-                             PUBLIC $<BUILD_INTERFACE:${CMAKE_CURRENT_BINARY_DIR}>)
-  target_include_directories(png_static SYSTEM
-                             INTERFACE $<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}/libpng${PNGLIB_ABI_VERSION}>)
+                             PUBLIC "$<BUILD_INTERFACE:${CMAKE_CURRENT_BINARY_DIR}>")
+  target_include_directories(png_static
+                             SYSTEM
+                             INTERFACE "$<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}/libpng${PNGLIB_ABI_VERSION}>")
   # rom-properties: ZLIB::ZLIB -> ${ZLIB_LIBRARY}
-  target_link_libraries(png_static PUBLIC ${ZLIB_LIBRARY} ${M_LIBRARY})
+  target_link_libraries(png_static
+                        PUBLIC ${ZLIB_LIBRARY} ${M_LIBRARY})
   # rom-properties: Set the MSVC debug path.
   SET_MSVC_DEBUG_PATH(png_static)
 endif()
 
 if(PNG_FRAMEWORK AND NOT APPLE)
-  message(AUTHOR_WARNING
-          "Setting PNG_FRAMEWORK to OFF, as it only applies to Apple systems")
+  message(AUTHOR_WARNING "Setting PNG_FRAMEWORK to OFF, as it only applies to Apple systems")
   set(PNG_FRAMEWORK OFF)
 endif()
 
@@ -738,26 +810,29 @@ if(PNG_FRAMEWORK)
   add_library(png_framework SHARED ${libpng_sources})
   add_dependencies(png_framework png_genfiles)
   list(APPEND PNG_LIBRARY_TARGETS png_framework)
-  set_target_properties(png_framework PROPERTIES
-                        FRAMEWORK TRUE
-                        FRAMEWORK_VERSION "${PNGLIB_VERSION}"
-                        MACOSX_FRAMEWORK_SHORT_VERSION_STRING "${PNGLIB_MAJOR}.${PNGLIB_MINOR}"
-                        MACOSX_FRAMEWORK_BUNDLE_VERSION "${PNGLIB_VERSION}"
-                        MACOSX_FRAMEWORK_IDENTIFIER "org.libpng.libpng"
-                        XCODE_ATTRIBUTE_INSTALL_PATH "@rpath"
-                        PUBLIC_HEADER "${libpng_public_hdrs}"
-                        OUTPUT_NAME "png"
-                        DEBUG_POSTFIX "${PNG_DEBUG_POSTFIX}")
+  set_target_properties(png_framework
+                        PROPERTIES FRAMEWORK TRUE
+                                   FRAMEWORK_VERSION "${PNGLIB_VERSION}"
+                                   MACOSX_FRAMEWORK_SHORT_VERSION_STRING "${PNGLIB_MAJOR}.${PNGLIB_MINOR}"
+                                   MACOSX_FRAMEWORK_BUNDLE_VERSION "${PNGLIB_VERSION}"
+                                   MACOSX_FRAMEWORK_IDENTIFIER "org.libpng.libpng"
+                                   XCODE_ATTRIBUTE_INSTALL_PATH "@rpath"
+                                   PUBLIC_HEADER "${libpng_public_hdrs}"
+                                   OUTPUT_NAME "png"
+                                   DEBUG_POSTFIX "${PNG_DEBUG_POSTFIX}")
   # Avoid CMake's implicit compile definition "-Dpng_framework_EXPORTS".
-  set_target_properties(png_framework PROPERTIES DEFINE_SYMBOL "")
+  set_target_properties(png_framework
+                        PROPERTIES DEFINE_SYMBOL "")
   target_include_directories(png_framework
-                             PUBLIC $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}>)
+                             PUBLIC "$<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}>")
   target_include_directories(png_framework
-                             PUBLIC $<BUILD_INTERFACE:${CMAKE_CURRENT_BINARY_DIR}>)
-  target_include_directories(png_framework SYSTEM
-                             INTERFACE $<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}/libpng${PNGLIB_ABI_VERSION}>)
+                             PUBLIC "$<BUILD_INTERFACE:${CMAKE_CURRENT_BINARY_DIR}>")
+  target_include_directories(png_framework
+                             SYSTEM
+                             INTERFACE "$<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}/libpng${PNGLIB_ABI_VERSION}>")
   # rom-properties: ZLIB::ZLIB -> ${ZLIB_LIBRARY}
-  target_link_libraries(png_framework PUBLIC ${ZLIB_LIBRARY} ${M_LIBRARY})
+  target_link_libraries(png_framework
+                        PUBLIC ${ZLIB_LIBRARY} ${M_LIBRARY})
 endif()
 
 if(NOT PNG_LIBRARY_TARGETS)
@@ -770,7 +845,7 @@ if(PNG_TESTS AND PNG_SHARED)
   enable_testing()
 
   # Include the internal module PNGTest.cmake
-  include(${CMAKE_CURRENT_SOURCE_DIR}/scripts/cmake/PNGTest.cmake)
+  include("${CMAKE_CURRENT_SOURCE_DIR}/scripts/cmake/PNGTest.cmake")
 
   # Find test PNG files by globbing, but sort lists to ensure
   # consistency between different filesystems.
@@ -784,7 +859,8 @@ if(PNG_TESTS AND PNG_SHARED)
   set(PNGTEST_PNG "${CMAKE_CURRENT_SOURCE_DIR}/pngtest.png")
 
   add_executable(pngtest ${pngtest_sources})
-  target_link_libraries(pngtest PRIVATE png_shared)
+  target_link_libraries(pngtest
+                        PRIVATE png_shared)
 
   png_add_test(NAME pngtest
                COMMAND pngtest
@@ -795,7 +871,8 @@ if(PNG_TESTS AND PNG_SHARED)
                FILES "${TEST_PNG3_PNGS}")
 
   add_executable(pngvalid ${pngvalid_sources})
-  target_link_libraries(pngvalid PRIVATE png_shared)
+  target_link_libraries(pngvalid
+                        PRIVATE png_shared)
 
   png_add_test(NAME pngvalid-gamma-16-to-8
                COMMAND pngvalid
@@ -841,7 +918,8 @@ if(PNG_TESTS AND PNG_SHARED)
                OPTIONS --transform)
 
   add_executable(pngstest ${pngstest_sources})
-  target_link_libraries(pngstest PRIVATE png_shared)
+  target_link_libraries(pngstest
+                        PRIVATE png_shared)
 
   foreach(gamma_type 1.8 linear none sRGB)
     foreach(alpha_type none alpha)
@@ -896,7 +974,8 @@ if(PNG_TESTS AND PNG_SHARED)
   endforeach()
 
   add_executable(pngunknown ${pngunknown_sources})
-  target_link_libraries(pngunknown PRIVATE png_shared)
+  target_link_libraries(pngunknown
+                        PRIVATE png_shared)
 
   png_add_test(NAME pngunknown-discard
                COMMAND pngunknown
@@ -912,7 +991,8 @@ if(PNG_TESTS AND PNG_SHARED)
                FILES "${PNGTEST_PNG}")
   png_add_test(NAME pngunknown-sAPI
                COMMAND pngunknown
-               OPTIONS --strict bKGD=save cHRM=save gAMA=save all=discard iCCP=save sBIT=save sRGB=save
+               OPTIONS --strict
+                       bKGD=save cHRM=save gAMA=save all=discard iCCP=save sBIT=save sRGB=save
                FILES "${PNGTEST_PNG}")
   png_add_test(NAME pngunknown-save
                COMMAND pngunknown
@@ -928,7 +1008,8 @@ if(PNG_TESTS AND PNG_SHARED)
                FILES "${PNGTEST_PNG}")
 
   add_executable(pngimage ${pngimage_sources})
-  target_link_libraries(pngimage PRIVATE png_shared)
+  target_link_libraries(pngimage
+                        PRIVATE png_shared)
 
   png_add_test(NAME pngimage-quick
                COMMAND pngimage
@@ -942,11 +1023,13 @@ endif()
 
 if(PNG_SHARED AND PNG_TOOLS)
   add_executable(pngfix ${pngfix_sources})
-  target_link_libraries(pngfix PRIVATE png_shared)
+  target_link_libraries(pngfix
+                        PRIVATE png_shared)
   set(PNG_BIN_TARGETS pngfix)
 
   add_executable(png-fix-itxt ${png_fix_itxt_sources})
-  target_link_libraries(png-fix-itxt PRIVATE ZLIB::ZLIB ${M_LIBRARY})
+  target_link_libraries(png-fix-itxt
+                        PRIVATE ZLIB::ZLIB ${M_LIBRARY})
   list(APPEND PNG_BIN_TARGETS png-fix-itxt)
 endif()
 
@@ -960,12 +1043,11 @@ function(create_symlink DEST_FILE)
   # CMake version 3.13.
   cmake_parse_arguments(_SYM "" "FILE;TARGET" "" ${ARGN})
   if(NOT _SYM_FILE AND NOT _SYM_TARGET)
-    message(FATAL_ERROR "create_symlink: Missing FILE or TARGET argument")
+    message(FATAL_ERROR "create_symlink: Missing arguments: FILE or TARGET")
   endif()
   if(_SYM_FILE AND _SYM_TARGET)
-    message(FATAL_ERROR "create_symlink: "
-                        "The arguments FILE (${_SYM_FILE}) and TARGET (${_SYM_TARGET}) "
-                        "are mutually-exclusive")
+    message(FATAL_ERROR "create_symlink: Mutually-exlusive arguments:"
+                        "FILE (${_SYM_FILE}) and TARGET (${_SYM_TARGET})")
   endif()
 
   if(_SYM_FILE)
@@ -974,12 +1056,14 @@ function(create_symlink DEST_FILE)
     if(CMAKE_HOST_WIN32 AND NOT CYGWIN)
       execute_process(COMMAND "${CMAKE_COMMAND}"
                               -E copy_if_different
-                              ${_SYM_FILE} ${DEST_FILE}
+                              "${_SYM_FILE}"
+                              "${DEST_FILE}"
                       WORKING_DIRECTORY "${CMAKE_CURRENT_BINARY_DIR}")
     else()
       execute_process(COMMAND "${CMAKE_COMMAND}"
                               -E create_symlink
-                              ${_SYM_FILE} ${DEST_FILE}
+                              "${_SYM_FILE}"
+                              "${DEST_FILE}"
                       WORKING_DIRECTORY "${CMAKE_CURRENT_BINARY_DIR}")
     endif()
   endif()
@@ -993,28 +1077,28 @@ function(create_symlink DEST_FILE)
                          POST_BUILD
                          COMMAND "${CMAKE_COMMAND}"
                                  -E copy_if_different
-                                 $<TARGET_LINKER_FILE_DIR:${_SYM_TARGET}>/$<TARGET_LINKER_FILE_NAME:${_SYM_TARGET}>
-                                 $<TARGET_LINKER_FILE_DIR:${_SYM_TARGET}>/${DEST_FILE})
+                                 "$<TARGET_LINKER_FILE_DIR:${_SYM_TARGET}>/$<TARGET_LINKER_FILE_NAME:${_SYM_TARGET}>"
+                                 "$<TARGET_LINKER_FILE_DIR:${_SYM_TARGET}>/${DEST_FILE}")
     else()
       add_custom_command(TARGET ${_SYM_TARGET}
                          POST_BUILD
                          COMMAND "${CMAKE_COMMAND}"
                                  -E create_symlink
-                                 $<TARGET_LINKER_FILE_NAME:${_SYM_TARGET}>
-                                 $<TARGET_LINKER_FILE_DIR:${_SYM_TARGET}>/${DEST_FILE})
+                                 "$<TARGET_LINKER_FILE_NAME:${_SYM_TARGET}>"
+                                 "$<TARGET_LINKER_FILE_DIR:${_SYM_TARGET}>/${DEST_FILE}")
     endif()
   endif()
 endfunction()
 
 # Create source generation scripts.
-configure_file(${CMAKE_CURRENT_SOURCE_DIR}/scripts/cmake/genchk.cmake.in
-               ${CMAKE_CURRENT_BINARY_DIR}/scripts/cmake/genchk.cmake
+configure_file("${CMAKE_CURRENT_SOURCE_DIR}/scripts/cmake/genchk.cmake.in"
+               "${CMAKE_CURRENT_BINARY_DIR}/scripts/cmake/genchk.cmake"
                @ONLY)
-configure_file(${CMAKE_CURRENT_SOURCE_DIR}/scripts/cmake/genout.cmake.in
-               ${CMAKE_CURRENT_BINARY_DIR}/scripts/cmake/genout.cmake
+configure_file("${CMAKE_CURRENT_SOURCE_DIR}/scripts/cmake/genout.cmake.in"
+               "${CMAKE_CURRENT_BINARY_DIR}/scripts/cmake/genout.cmake"
                @ONLY)
-configure_file(${CMAKE_CURRENT_SOURCE_DIR}/scripts/cmake/gensrc.cmake.in
-               ${CMAKE_CURRENT_BINARY_DIR}/scripts/cmake/gensrc.cmake
+configure_file("${CMAKE_CURRENT_SOURCE_DIR}/scripts/cmake/gensrc.cmake.in"
+               "${CMAKE_CURRENT_BINARY_DIR}/scripts/cmake/gensrc.cmake"
                @ONLY)
 
 # libpng is a library so default to 'lib'
@@ -1027,17 +1111,17 @@ endif()
 # Only do this on Windows for Cygwin - the files don't make much sense
 # outside of a UNIX look-alike.
 if(NOT WIN32 OR CYGWIN OR MINGW)
-  set(prefix      ${CMAKE_INSTALL_PREFIX})
-  set(exec_prefix ${CMAKE_INSTALL_PREFIX})
-  set(libdir      ${CMAKE_INSTALL_FULL_LIBDIR})
-  set(includedir  ${CMAKE_INSTALL_FULL_INCLUDEDIR})
-  set(LIBS        "-lz -lm")
-  configure_file(${CMAKE_CURRENT_SOURCE_DIR}/libpng.pc.in
-                 ${CMAKE_CURRENT_BINARY_DIR}/libpng${PNGLIB_ABI_VERSION}.pc
+  set(prefix "${CMAKE_INSTALL_PREFIX}")
+  set(exec_prefix "${CMAKE_INSTALL_PREFIX}")
+  set(libdir "${CMAKE_INSTALL_FULL_LIBDIR}")
+  set(includedir "${CMAKE_INSTALL_FULL_INCLUDEDIR}")
+  set(LIBS "-lz -lm")
+  configure_file("${CMAKE_CURRENT_SOURCE_DIR}/libpng.pc.in"
+                 "${CMAKE_CURRENT_BINARY_DIR}/libpng${PNGLIB_ABI_VERSION}.pc"
                  @ONLY)
   create_symlink(libpng.pc FILE libpng${PNGLIB_ABI_VERSION}.pc)
-  configure_file(${CMAKE_CURRENT_SOURCE_DIR}/libpng-config.in
-                 ${CMAKE_CURRENT_BINARY_DIR}/libpng${PNGLIB_ABI_VERSION}-config
+  configure_file("${CMAKE_CURRENT_SOURCE_DIR}/libpng-config.in"
+                 "${CMAKE_CURRENT_BINARY_DIR}/libpng${PNGLIB_ABI_VERSION}-config"
                  @ONLY)
   create_symlink(libpng-config FILE libpng${PNGLIB_ABI_VERSION}-config)
 endif()
@@ -1053,10 +1137,10 @@ if(NOT SKIP_INSTALL_LIBRARIES AND NOT SKIP_INSTALL_ALL)
   # - Disabled the export rule
   install(TARGETS ${PNG_LIBRARY_TARGETS}
           #EXPORT libpng
-          RUNTIME DESTINATION ${INSTALL_BIN_DIR}
-          #LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
-          #ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR}
-          FRAMEWORK DESTINATION ${INSTALL_LIB_DIR})
+          RUNTIME DESTINATION "${INSTALL_BIN_DIR}"
+          #LIBRARY DESTINATION "${CMAKE_INSTALL_LIBDIR}"
+          #ARCHIVE DESTINATION "${CMAKE_INSTALL_LIBDIR}"
+          FRAMEWORK DESTINATION "${INSTALL_LIB_DIR}")
 
   IF(INSTALL_DEBUG AND PNG_SHARED)
     # FIXME: Generator expression $<TARGET_PROPERTY:${_target},PDB> didn't work with CPack-3.6.1.
@@ -1081,16 +1165,16 @@ if(NOT SKIP_INSTALL_LIBRARIES AND NOT SKIP_INSTALL_ALL)
     # Create a symlink for libpng.dll.a => libpng16.dll.a on Cygwin
     if(NOT WIN32 OR CYGWIN OR MINGW)
       create_symlink(libpng${CMAKE_SHARED_LIBRARY_SUFFIX} TARGET png_shared)
-      install(FILES $<TARGET_LINKER_FILE_DIR:png_shared>/libpng${CMAKE_SHARED_LIBRARY_SUFFIX}
-              DESTINATION ${CMAKE_INSTALL_LIBDIR})
+      install(FILES "$<TARGET_LINKER_FILE_DIR:png_shared>/libpng${CMAKE_SHARED_LIBRARY_SUFFIX}"
+              DESTINATION "${CMAKE_INSTALL_LIBDIR}")
     endif()
   endif()
 
   if(PNG_STATIC)
     if(NOT WIN32 OR CYGWIN OR MINGW)
       create_symlink(libpng${CMAKE_STATIC_LIBRARY_SUFFIX} TARGET png_static)
-      install(FILES $<TARGET_LINKER_FILE_DIR:png_static>/libpng${CMAKE_STATIC_LIBRARY_SUFFIX}
-              DESTINATION ${CMAKE_INSTALL_LIBDIR})
+      install(FILES "$<TARGET_LINKER_FILE_DIR:png_static>/libpng${CMAKE_STATIC_LIBRARY_SUFFIX}"
+              DESTINATION "${CMAKE_INSTALL_LIBDIR}")
     endif()
   endif()
   ENDIF(0)
@@ -1098,40 +1182,40 @@ endif()
 
 if(NOT SKIP_INSTALL_HEADERS AND NOT SKIP_INSTALL_ALL)
   install(FILES ${libpng_public_hdrs}
-          DESTINATION ${CMAKE_INSTALL_INCLUDEDIR})
+          DESTINATION "${CMAKE_INSTALL_INCLUDEDIR}")
   install(FILES ${libpng_public_hdrs}
-          DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}/libpng${PNGLIB_ABI_VERSION})
+          DESTINATION "${CMAKE_INSTALL_INCLUDEDIR}/libpng${PNGLIB_ABI_VERSION}")
 endif()
 if(NOT SKIP_INSTALL_EXECUTABLES AND NOT SKIP_INSTALL_ALL)
   if(NOT WIN32 OR CYGWIN OR MINGW)
-    install(PROGRAMS ${CMAKE_CURRENT_BINARY_DIR}/libpng-config
-            DESTINATION ${CMAKE_INSTALL_BINDIR})
-    install(PROGRAMS ${CMAKE_CURRENT_BINARY_DIR}/libpng${PNGLIB_ABI_VERSION}-config
-            DESTINATION ${CMAKE_INSTALL_BINDIR})
+    install(PROGRAMS "${CMAKE_CURRENT_BINARY_DIR}/libpng-config"
+            DESTINATION "${CMAKE_INSTALL_BINDIR}")
+    install(PROGRAMS "${CMAKE_CURRENT_BINARY_DIR}/libpng${PNGLIB_ABI_VERSION}-config"
+            DESTINATION "${CMAKE_INSTALL_BINDIR}")
   endif()
 endif()
 
 if(NOT SKIP_INSTALL_PROGRAMS AND NOT SKIP_INSTALL_ALL)
   install(TARGETS ${PNG_BIN_TARGETS}
-          RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR})
+          RUNTIME DESTINATION "${CMAKE_INSTALL_BINDIR}")
 endif()
 
 if(NOT SKIP_INSTALL_FILES AND NOT SKIP_INSTALL_ALL)
   # Install the man pages.
   install(FILES libpng.3 libpngpf.3
-          DESTINATION ${CMAKE_INSTALL_MANDIR}/man3)
+          DESTINATION "${CMAKE_INSTALL_MANDIR}/man3")
   install(FILES png.5
-          DESTINATION ${CMAKE_INSTALL_MANDIR}/man5)
+          DESTINATION "${CMAKE_INSTALL_MANDIR}/man5")
   # Install the pkg-config files.
   if(NOT CMAKE_HOST_WIN32 OR CYGWIN OR MINGW)
-    install(FILES ${CMAKE_CURRENT_BINARY_DIR}/libpng.pc
-            DESTINATION ${CMAKE_INSTALL_LIBDIR}/pkgconfig)
-    install(PROGRAMS ${CMAKE_CURRENT_BINARY_DIR}/libpng-config
-            DESTINATION ${CMAKE_INSTALL_BINDIR})
-    install(FILES ${CMAKE_CURRENT_BINARY_DIR}/libpng${PNGLIB_ABI_VERSION}.pc
-            DESTINATION ${CMAKE_INSTALL_LIBDIR}/pkgconfig)
-    install(PROGRAMS ${CMAKE_CURRENT_BINARY_DIR}/libpng${PNGLIB_ABI_VERSION}-config
-            DESTINATION ${CMAKE_INSTALL_BINDIR})
+    install(FILES "${CMAKE_CURRENT_BINARY_DIR}/libpng.pc"
+            DESTINATION "${CMAKE_INSTALL_LIBDIR}/pkgconfig")
+    install(PROGRAMS "${CMAKE_CURRENT_BINARY_DIR}/libpng-config"
+            DESTINATION "${CMAKE_INSTALL_BINDIR}")
+    install(FILES "${CMAKE_CURRENT_BINARY_DIR}/libpng${PNGLIB_ABI_VERSION}.pc"
+            DESTINATION "${CMAKE_INSTALL_LIBDIR}/pkgconfig")
+    install(PROGRAMS "${CMAKE_CURRENT_BINARY_DIR}/libpng${PNGLIB_ABI_VERSION}-config"
+            DESTINATION "${CMAKE_INSTALL_BINDIR}")
   endif()
 endif()
 
@@ -1140,7 +1224,7 @@ endif()
 IF(0)
 if(NOT SKIP_INSTALL_EXPORT AND NOT SKIP_INSTALL_ALL)
   install(EXPORT libpng
-          DESTINATION ${CMAKE_INSTALL_LIBDIR}/libpng
+          DESTINATION "${CMAKE_INSTALL_LIBDIR}/libpng"
           FILE libpng${PNGLIB_ABI_VERSION}.cmake)
 endif()
 ENDIF(0) # rom-properties
@@ -1149,10 +1233,10 @@ ENDIF(0) # rom-properties
 if(NOT SKIP_INSTALL_CONFIG_FILE AND NOT SKIP_INSTALL_ALL)
   install(TARGETS ${PNG_LIBRARY_TARGETS}
           EXPORT PNGTargets
-          RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR}
-          LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
-          ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR}
-          FRAMEWORK DESTINATION ${CMAKE_INSTALL_LIBDIR})
+          RUNTIME DESTINATION "${CMAKE_INSTALL_BINDIR}"
+          LIBRARY DESTINATION "${CMAKE_INSTALL_LIBDIR}"
+          ARCHIVE DESTINATION "${CMAKE_INSTALL_LIBDIR}"
+          FRAMEWORK DESTINATION "${CMAKE_INSTALL_LIBDIR}")
 
   include(CMakePackageConfigHelpers)
   write_basic_package_version_file(PNGConfigVersion.cmake
@@ -1162,11 +1246,11 @@ if(NOT SKIP_INSTALL_CONFIG_FILE AND NOT SKIP_INSTALL_ALL)
   install(EXPORT PNGTargets
           FILE PNGTargets.cmake
           NAMESPACE PNG::
-          DESTINATION ${CMAKE_INSTALL_LIBDIR}/cmake/PNG)
+          DESTINATION "${CMAKE_INSTALL_LIBDIR}/cmake/PNG")
 
-  install(FILES ${CMAKE_CURRENT_SOURCE_DIR}/scripts/cmake/PNGConfig.cmake
-                ${CMAKE_CURRENT_BINARY_DIR}/PNGConfigVersion.cmake
-          DESTINATION ${CMAKE_INSTALL_LIBDIR}/cmake/PNG)
+  install(FILES "${CMAKE_CURRENT_SOURCE_DIR}/scripts/cmake/PNGConfig.cmake"
+                "${CMAKE_CURRENT_BINARY_DIR}/PNGConfigVersion.cmake"
+          DESTINATION "${CMAKE_INSTALL_LIBDIR}/cmake/PNG")
 endif()
 
 # TODO: Create MSVC import lib for MinGW-compiled shared lib.

extlib/libpng/INSTALL

@@ -136,7 +136,7 @@ Your directory structure should look like this:
              depcomp, install-sh, mkinstalldirs, test-pngtest.sh, etc.
           contrib
              arm-neon, conftest, examples, gregbook, libtests, pngminim,
-             pngminus, pngsuite, tools, visupng
+             pngminus, pngsuite, tools, visupng, riscv-rvv
           projects
              owatcom, visualc71, vstudio
           scripts
@@ -289,6 +289,7 @@ such as one of
    --enable-mips-msa=yes
    --enable-intel-sse=yes
    --enable-powerpc-vsx=yes
+   --enable-riscv-rvv=yes
 
 or enable them all at once with
 
@@ -301,6 +302,7 @@ or more of
    CPPFLAGS += "-DPNG_MIPS_MSA"
    CPPFLAGS += "-DPNG_INTEL_SSE"
    CPPFLAGS += "-DPNG_POWERPC_VSX"
+   CPPFLAGS += "-DPNG_RISCV_RVV"
 
 See for example scripts/makefile.linux-opt
 
@@ -317,13 +319,15 @@ to disable a particular one,
 or via compiler-command options such as
 
    CPPFLAGS += "-DPNG_ARM_NEON_OPT=0, -DPNG_MIPS_MSA_OPT=0,
-   -DPNG_INTEL_SSE_OPT=0, -DPNG_POWERPC_VSX_OPT=0"
+   -DPNG_INTEL_SSE_OPT=0, -DPNG_POWERPC_VSX_OPT=0,
+   -DPNG_RISCV_RVV_OPT=0"
 
 If you are using cmake, hardware optimizations are "on"
 by default. To disable them, use
 
     cmake . -DPNG_ARM_NEON=no -DPNG_INTEL_SSE=no \
-            -DPNG_MIPS_MSA=no -DPNG_POWERPC_VSX=no
+            -DPNG_MIPS_MSA=no -DPNG_POWERPC_VSX=no \
+            -DPNG_RISCV_RVV=no
 
 or disable them all at once with
 

extlib/libpng/README

@@ -1,4 +1,4 @@
-README for libpng version 1.6.47
+README for libpng version 1.6.49
 ================================
 
 See the note about version numbers near the top of `png.h`.
@@ -147,6 +147,7 @@ Files included in this distribution
     loongarch/    =>  Optimized code for LoongArch LSX
     mips/         =>  Optimized code for MIPS MSA and MIPS MMI
     powerpc/      =>  Optimized code for PowerPC VSX
+    riscv/        =>  Optimized code for the RISC-V platform
     ci/           =>  Scripts for continuous integration
     contrib/      =>  External contributions
         arm-neon/     =>  Optimized code for the ARM-NEON platform
@@ -162,6 +163,7 @@ Files included in this distribution
                           programs demonstrating the use of pngusr.dfa
         pngminus/     =>  Simple pnm2png and png2pnm programs
         pngsuite/     =>  Test images
+        riscv-rvv/    =>  Optimized code for the RISC-V Vector platform
         testpngs/     =>  Test images
         tools/        =>  Various tools
         visupng/      =>  VisualPng, a Windows viewer for PNG images

extlib/libpng/_MODIFIED_LIBPNG.txt

@@ -1,9 +1,9 @@
-This copy of libpng-1.6.47 is a modified version of the original.
+This copy of libpng-1.6.48 is a modified version of the original.
 
-commit 872555f4ba910252783af1507f9e7fe1653be252
-Release libpng version 1.6.47
+commit ea127968204cc5d10f3fc9250c306b9e8cbd9b80
+Release libpng version 1.6.48
     
-Tag: v1.6.47
+Tag: v1.6.48
 
 The following changes have been made to the original:
 
@@ -14,5 +14,5 @@ The following changes have been made to the original:
 - APNG support has been added via the APNG patch:
   http://sourceforge.net/projects/libpng-apng/
 
-To obtain the original libpng-1.6.47, visit:
+To obtain the original libpng-1.6.48, visit:
 http://www.libpng.org/pub/png/libpng.html

extlib/libpng/arm/arm_init.c

@@ -35,14 +35,14 @@
 #ifndef PNG_ARM_NEON_FILE
 #  if defined(__aarch64__) || defined(_M_ARM64)
      /* ARM Neon is expected to be unconditionally available on ARM64. */
-#    error "PNG_ARM_NEON_CHECK_SUPPORTED must not be defined on ARM64"
+#    error PNG_ARM_NEON_CHECK_SUPPORTED must not be defined on ARM64
 #  elif defined(__ARM_NEON__) || defined(__ARM_NEON)
      /* ARM Neon is expected to be available on the target CPU architecture. */
-#    error "PNG_ARM_NEON_CHECK_SUPPORTED must not be defined on this CPU arch"
+#    error PNG_ARM_NEON_CHECK_SUPPORTED must not be defined on this CPU arch
 #  elif defined(__linux__)
 #    define PNG_ARM_NEON_FILE "contrib/arm-neon/linux.c"
 #  else
-#    error "No support for run-time ARM Neon checking; use compile-time options"
+#    error No support for run-time ARM Neon checking; use compile-time options
 #  endif
 #endif
 
@@ -53,7 +53,7 @@ static int png_have_neon(png_structp png_ptr);
 #endif /* PNG_ARM_NEON_CHECK_SUPPORTED */
 
 #ifndef PNG_ALIGNED_MEMORY_SUPPORTED
-#  error "ALIGNED_MEMORY is required; set: -DPNG_ALIGNED_MEMORY_SUPPORTED"
+#  error ALIGNED_MEMORY is required; please define PNG_ALIGNED_MEMORY_SUPPORTED
 #endif
 
 void

extlib/libpng/config.h.in

@@ -108,6 +108,15 @@
 /* Enable POWERPC VSX optimizations */
 #undef PNG_POWERPC_VSX_OPT
 
+/* Turn on RISC-V Vector optimizations at run-time */
+#undef PNG_RISCV_RVV_API_SUPPORTED
+
+/* Check for RISC-V Vector support at run-time */
+#undef PNG_RISCV_RVV_CHECK_SUPPORTED
+
+/* Enable RISCV RVV optimizations */
+#undef PNG_RISCV_RVV_OPT
+
 /* Define to 1 if all of the C89 standard headers exist (not just the ones
    required in a freestanding environment). This macro is provided for
    backward compatibility; new code need not use it. */

extlib/libpng/contrib/riscv-rvv/README

@@ -0,0 +1,85 @@
+OPERATING SYSTEM SPECIFIC RISC-V RVV DETECTION
+----------------------------------------------
+
+Detection of the ability to execute RISC-V Vector on a RISC-V processor
+requires operating system support.  (The information is not available in user
+mode.)
+
+HOW TO USE THIS
+---------------
+
+This directory contains C code fragments that can be included in
+riscv/riscv_init.c by setting the macro PNG_RISCV_RVV_FILE to the file name
+in "" or <> at build time.  This setting is not recorded in pnglibconf.h and
+can be changed simply by rebuilding riscv/riscv_init.o with the required macro
+definition.
+
+For any of this code to be used the RISC-V Vector code must be enabled and run
+time checks must be supported.  I.e.:
+
+#if PNG_RISCV_RVV_OPT > 0
+#ifdef PNG_RISCV_RVV_CHECK_SUPPORTED
+
+This is done in a 'configure' build by passing configure the argument:
+
+   --enable-riscv-rvv=check
+
+Apart from the basic Linux implementation in contrib/riscv-rvv/linux.c this
+code is unsupported.  That means that it is not even compiled on a regular
+basis and may be broken in any given minor release.
+
+FILE FORMAT
+-----------
+
+Each file documents its testing status as of the last time it was tested (which
+may have been a long time ago):
+
+STATUS: one of:
+   SUPPORTED: This indicates that the file is included in the regularly
+         performed test builds and bugs are fixed when discovered.
+   COMPILED: This indicates that the code did compile at least once.  See the
+         more detailed description for the extent to which the result was
+         successful.
+   TESTED: This means the code was fully compiled into the libpng test programs
+         and these were run at least once.
+
+BUG REPORTS: an email address to which to send reports of problems
+
+The file is a fragment of C code. It should not define any 'extern' symbols;
+everything should be static.  It must define the function:
+
+static int png_have_rvv(png_structp png_ptr);
+
+That function must return 1 if RISC-V Vector instructions are supported, 0 if
+not.  It must not execute png_error unless it detects a bug.  A png_error will
+prevent the reading of the PNG and in the future, writing too.
+
+BUG REPORTS
+-----------
+
+If you mail a bug report for any file that is not SUPPORTED there may only be
+limited response.  Consider fixing it and sending a patch to fix the problem -
+this is more likely to result in action.
+
+CONTRIBUTIONS
+-------------
+
+You may send contributions of new implementations to
+png-mng-implement@sourceforge.net.  Please write code in strict C90 C where
+possible.  Obviously OS dependencies are to be expected.  If you submit code you
+must have the authors permission and it must have a license that is acceptable
+to the current maintainer; in particular that license must permit modification
+and redistribution.
+
+Please try to make the contribution a single file and give the file a clear and
+unambiguous name that identifies the target OS.  If multiple files really are
+required put them all in a sub-directory.
+
+You must also be prepared to handle bug reports from users of the code, either
+by joining the png-mng-implement mailing list or by providing an email for the
+"BUG REPORTS" entry or both.  Please make sure that the header of the file
+contains the STATUS and BUG REPORTS fields as above.
+
+Please list the OS requirements as precisely as possible.  Ideally you should
+also list the environment in which the code has been tested and certainly list
+any environments where you suspect it might not work.

extlib/libpng/contrib/riscv-rvv/linux.c

@@ -0,0 +1,36 @@
+/* contrib/riscv-rvv/linux.c
+ *
+ * Copyright (c) 2023 Google LLC
+ * Written by Dragoș Tiselice <dtiselice@google.com>, May 2023.
+ *
+ * This code is released under the libpng license.
+ * For conditions of distribution and use, see the disclaimer
+ * and license in png.h
+ *
+ * SEE contrib/riscv-rvv/README before reporting bugs
+ *
+ * STATUS: SUPPORTED
+ * BUG REPORTS: png-mng-implement@sourceforge.net
+ *
+ * png_have_rvv implemented for Linux by looking for COMPAT_HWCAP_ISA_V
+ * via hardware capabilites API.
+ *
+ * This code is strict ANSI-C and is probably moderately portable; it does
+ * however use <stdio.h> and it assumes that /proc/cpuinfo is never localized.
+ */
+
+#if defined(__linux__)
+#include <asm/hwcap.h>
+#include <sys/auxv.h>
+#endif
+
+static int
+png_have_rvv(png_structp png_ptr) {
+#if defined(__linux__)
+   return getauxval (AT_HWCAP) & COMPAT_HWCAP_ISA_V ? 1 : 0;
+#else
+#pragma message(                                                               \
+   "warning: RISC-V Vector not supported for this platform")
+   return 0;
+#endif
+}

extlib/libpng/example.c

@@ -2,7 +2,7 @@
 
 /* example.c - an example of using libpng
  *
- * Maintained 2018-2024 Cosmin Truta
+ * Maintained 2018-2025 Cosmin Truta
  * Maintained 1998-2016 Glenn Randers-Pehrson
  * Maintained 1996-1997 Andreas Dilger
  * Written 1995-1996 Guy Eric Schalnat, Group 42, Inc.
@@ -179,11 +179,11 @@ int main(int argc, const char **argv)
  *    components.
  *
  * You do not have to read directly from a file.  You can read from memory or,
- * on systems that support it, from a <stdio.h> FILE*.  This is controlled by
- * the particular png_image_read_from_ function you call at the start.
- * Likewise, on write, you can write to a FILE* if your system supports it.
- * Check the macro PNG_STDIO_SUPPORTED to see if stdio support has been
- * included in your libpng build.
+ * on systems that support <stdio.h>, from a FILE object.  This is controlled
+ * by the particular png_image_begin_read_from_ function you call at the start.
+ * Likewise, on write, you can write to a FILE object if your system supports
+ * <stdio.h>.  The macro PNG_STDIO_SUPPORTED indicates if stdio is available
+ * and accessible from your libpng build.
  *
  * If you read 16-bit (PNG_FORMAT_FLAG_LINEAR) data, you may need to write it
  * in the 8-bit format for display.  You do this by setting the convert_to_8bit

extlib/libpng/libpng-manual.txt

@@ -9,7 +9,7 @@ libpng-manual.txt - A description on how to use and modify libpng
 
  Based on:
 
- libpng version 1.6.36, December 2018, through 1.6.47 - February 2025
+ libpng version 1.6.36, December 2018, through 1.6.49 - June 2025
  Updated and distributed by Cosmin Truta
  Copyright (c) 2018-2025 Cosmin Truta
 
@@ -4089,7 +4089,7 @@ READ APIs
      is filled in from the PNG header in the file.
 
    int png_image_begin_read_from_stdio (png_imagep image,
-     FILE* file)
+     FILE *file)
 
       The PNG header is read from the stdio FILE object.
 
@@ -4164,7 +4164,7 @@ be written:
       int convert_to_8_bit, const void *buffer,
       png_int_32 row_stride, const void *colormap)
 
-      Write the image to the given (FILE*).
+      Write the image to the given FILE object.
 
 With all write APIs if image is in one of the linear formats with
 (png_uint_16) data then setting convert_to_8_bit will cause the output to be

extlib/libpng/libpng.3

@@ -1,6 +1,6 @@
-.TH LIBPNG 3 "February 18, 2025"
+.TH LIBPNG 3 "June 12, 2025"
 .SH NAME
-libpng \- Portable Network Graphics (PNG) Reference Library 1.6.47
+libpng \- Portable Network Graphics (PNG) Reference Library 1.6.49
 
 .SH SYNOPSIS
 \fB#include <png.h>\fP
@@ -223,7 +223,7 @@ libpng \- Portable Network Graphics (PNG) Reference Library 1.6.47
 
 \fBint png_image_begin_read_from_file (png_imagep \fP\fIimage\fP\fB, const char \fI*file_name\fP\fB);\fP
 
-\fBint png_image_begin_read_from_stdio (png_imagep \fP\fIimage\fP\fB, FILE* \fIfile\fP\fB);\fP
+\fBint png_image_begin_read_from_stdio (png_imagep \fP\fIimage\fP\fB, FILE *\fIfile\fP\fB);\fP
 
 \fBint, png_image_begin_read_from_memory (png_imagep \fP\fIimage\fP\fB, png_const_voidp \fP\fImemory\fP\fB, size_t \fIsize\fP\fB);\fP
 
@@ -528,7 +528,7 @@ libpng-manual.txt - A description on how to use and modify libpng
 
  Based on:
 
- libpng version 1.6.36, December 2018, through 1.6.47 - February 2025
+ libpng version 1.6.36, December 2018, through 1.6.49 - June 2025
  Updated and distributed by Cosmin Truta
  Copyright (c) 2018-2025 Cosmin Truta
 
@@ -4608,7 +4608,7 @@ READ APIs
      is filled in from the PNG header in the file.
 
    int png_image_begin_read_from_stdio (png_imagep image,
-     FILE* file)
+     FILE *file)
 
       The PNG header is read from the stdio FILE object.
 
@@ -4683,7 +4683,7 @@ be written:
       int convert_to_8_bit, const void *buffer,
       png_int_32 row_stride, const void *colormap)
 
-      Write the image to the given (FILE*).
+      Write the image to the given FILE object.
 
 With all write APIs if image is in one of the linear formats with
 (png_uint_16) data then setting convert_to_8_bit will cause the output to be