diff --git a/CMakeLists.txt b/CMakeLists.txt
index 9ef717185..8065f9219 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,7 +1,15 @@
 # ROM Properties Page Shell Extension
-CMAKE_MINIMUM_REQUIRED(VERSION 3.4)
+CMAKE_MINIMUM_REQUIRED(VERSION 3.5)
+
+# CMP0048: Set VERSION variables based on the project version specified in PROJECT().
+# Introduced in CMake 3.0.
 CMAKE_POLICY(SET CMP0048 NEW)
 
+# CMP0063: Honor visibility properties for all target types,
+# including static libraries and executables.
+# Introduced in CMake 3.3.
+CMAKE_POLICY(SET CMP0063 NEW)
+
 # Read the project version.
 CONFIGURE_FILE(version.txt version.txt.tmp)
 FILE(STRINGS version.txt RP_VERSION_FILE)
diff --git a/src/amiibo-data/CMakeLists.txt b/src/amiibo-data/CMakeLists.txt
index 46b44214c..e03d80a28 100644
--- a/src/amiibo-data/CMakeLists.txt
+++ b/src/amiibo-data/CMakeLists.txt
@@ -1,10 +1,4 @@
 # amiibo database data and compiler.
-CMAKE_POLICY(SET CMP0048 NEW)
-IF(POLICY CMP0063)
-	# CMake 3.3: Enable symbol visibility presets for all
-	# target types, including static libraries and executables.
-	CMAKE_POLICY(SET CMP0063 NEW)
-ENDIF(POLICY CMP0063)
 PROJECT(amiibo-data LANGUAGES CXX)
 
 SET(amiiboc_SRCS amiiboc.cpp)
diff --git a/src/gtk/CMakeLists.txt b/src/gtk/CMakeLists.txt
index 9df1c8174..08f636541 100644
--- a/src/gtk/CMakeLists.txt
+++ b/src/gtk/CMakeLists.txt
@@ -1,10 +1,4 @@
 # GTK+ UI frontends
-CMAKE_POLICY(SET CMP0048 NEW)
-IF(POLICY CMP0063)
-	# CMake 3.3: Enable symbol visibility presets for all
-	# target types, including static libraries and executables.
-	CMAKE_POLICY(SET CMP0063 NEW)
-ENDIF(POLICY CMP0063)
 PROJECT(rom-properties-gtk LANGUAGES C CXX)
 
 INCLUDE_DIRECTORIES(${CMAKE_SOURCE_DIR}/src)
diff --git a/src/gtk/gtk3/CMakeLists.txt b/src/gtk/gtk3/CMakeLists.txt
index 2e298b21f..2077df4ef 100644
--- a/src/gtk/gtk3/CMakeLists.txt
+++ b/src/gtk/gtk3/CMakeLists.txt
@@ -3,12 +3,6 @@
 # - Caja 1.18 (MATE)
 # - Nemo (Cinnamon)
 # - Thunar 1.8 (XFCE)
-CMAKE_POLICY(SET CMP0048 NEW)
-IF(POLICY CMP0063)
-	# CMake 3.3: Enable symbol visibility presets for all
-	# target types, including static libraries and executables.
-	CMAKE_POLICY(SET CMP0063 NEW)
-ENDIF(POLICY CMP0063)
 PROJECT(rom-properties-gtk3 LANGUAGES C CXX)
 
 FIND_PACKAGE(GLib2 ${REQUIRE_GTK3} ${GLIB_MIN_VERSION})
diff --git a/src/gtk/gtk4/CMakeLists.txt b/src/gtk/gtk4/CMakeLists.txt
index 6c4ed37de..24b08bde6 100644
--- a/src/gtk/gtk4/CMakeLists.txt
+++ b/src/gtk/gtk4/CMakeLists.txt
@@ -1,10 +1,4 @@
 # GTK4 UI frontend
-CMAKE_POLICY(SET CMP0048 NEW)
-IF(POLICY CMP0063)
-	# CMake 3.3: Enable symbol visibility presets for all
-	# target types, including static libraries and executables.
-	CMAKE_POLICY(SET CMP0063 NEW)
-ENDIF(POLICY CMP0063)
 PROJECT(rom-properties-gtk4 LANGUAGES C CXX)
 
 # GTK4 requires glib-2.66.0.
diff --git a/src/gtk/tests/CMakeLists.txt b/src/gtk/tests/CMakeLists.txt
index 665c93cd0..b2da308c8 100644
--- a/src/gtk/tests/CMakeLists.txt
+++ b/src/gtk/tests/CMakeLists.txt
@@ -1,11 +1,5 @@
 # GTK UI frontend test suite
-CMAKE_POLICY(SET CMP0048 NEW)
-IF(POLICY CMP0063)
-	# CMake 3.3: Enable symbol visibility presets for all
-	# target types, including static libraries and executables.
-	CMAKE_POLICY(SET CMP0063 NEW)
-ENDIF(POLICY CMP0063)
-PROJECT(gtk-tests LANGUAGES CXX)
+PROJECT(gtk-tests LANGUAGES C CXX)
 
 # Top-level src directory
 INCLUDE_DIRECTORIES(${CMAKE_CURRENT_SOURCE_DIR}/../..)
diff --git a/src/gtk/thumbnailer-dbus/CMakeLists.txt b/src/gtk/thumbnailer-dbus/CMakeLists.txt
index 837bae66b..3dd7d1d29 100644
--- a/src/gtk/thumbnailer-dbus/CMakeLists.txt
+++ b/src/gtk/thumbnailer-dbus/CMakeLists.txt
@@ -1,10 +1,4 @@
 # D-Bus Thumbnailer for rom-properties
-CMAKE_POLICY(SET CMP0048 NEW)
-IF(POLICY CMP0063)
-	# CMake 3.3: Enable symbol visibility presets for all
-	# target types, including static libraries and executables.
-	CMAKE_POLICY(SET CMP0063 NEW)
-ENDIF(POLICY CMP0063)
 PROJECT(rp-thumbnailer-dbus LANGUAGES C)
 
 # Find packages.
diff --git a/src/gtk/xfce/CMakeLists.txt b/src/gtk/xfce/CMakeLists.txt
index 47f431f9c..6a39d67ad 100644
--- a/src/gtk/xfce/CMakeLists.txt
+++ b/src/gtk/xfce/CMakeLists.txt
@@ -1,11 +1,5 @@
 # GTK+ 2.x UI frontend for:
 # - Thunar 1.6 (XFCE)
-CMAKE_POLICY(SET CMP0048 NEW)
-IF(POLICY CMP0063)
-	# CMake 3.3: Enable symbol visibility presets for all
-	# target types, including static libraries and executables.
-	CMAKE_POLICY(SET CMP0063 NEW)
-ENDIF(POLICY CMP0063)
 PROJECT(rom-properties-xfce LANGUAGES C CXX)
 
 # Disable glib deprecation warnings.
diff --git a/src/kde/CMakeLists.txt b/src/kde/CMakeLists.txt
index 8f731637d..155c5ea37 100644
--- a/src/kde/CMakeLists.txt
+++ b/src/kde/CMakeLists.txt
@@ -1,10 +1,4 @@
 # KDE (Qt) UI frontends
-CMAKE_POLICY(SET CMP0048 NEW)
-IF(POLICY CMP0063)
-	# CMake 3.3: Enable symbol visibility presets for all
-	# target types, including static libraries and executables.
-	CMAKE_POLICY(SET CMP0063 NEW)
-ENDIF(POLICY CMP0063)
 PROJECT(rom-properties-kde LANGUAGES CXX)
 
 # Common files for all KDE versions.
diff --git a/src/kde/kde4/CMakeLists.txt b/src/kde/kde4/CMakeLists.txt
index 97ca29263..e63fa41cc 100644
--- a/src/kde/kde4/CMakeLists.txt
+++ b/src/kde/kde4/CMakeLists.txt
@@ -1,10 +1,4 @@
 # KDE 4.x UI frontend
-CMAKE_POLICY(SET CMP0048 NEW)
-IF(POLICY CMP0063)
-	# CMake 3.3: Enable symbol visibility presets for all
-	# target types, including static libraries and executables.
-	CMAKE_POLICY(SET CMP0063 NEW)
-ENDIF(POLICY CMP0063)
 PROJECT(rom-properties-kde4 LANGUAGES CXX)
 
 # Find Qt4 and KDE4.
diff --git a/src/kde/kf5/CMakeLists.txt b/src/kde/kf5/CMakeLists.txt
index 619bf0e21..3629d9f71 100644
--- a/src/kde/kf5/CMakeLists.txt
+++ b/src/kde/kf5/CMakeLists.txt
@@ -1,10 +1,4 @@
 # KDE Frameworks 5.x UI frontend
-CMAKE_POLICY(SET CMP0048 NEW)
-IF(POLICY CMP0063)
-	# CMake 3.3: Enable symbol visibility presets for all
-	# target types, including static libraries and executables.
-	CMAKE_POLICY(SET CMP0063 NEW)
-ENDIF(POLICY CMP0063)
 PROJECT(rom-properties-kf5 LANGUAGES CXX)
 
 # Find Qt5 and KF5.
diff --git a/src/kde/kf6/CMakeLists.txt b/src/kde/kf6/CMakeLists.txt
index 1961c22be..72d8f2cc6 100644
--- a/src/kde/kf6/CMakeLists.txt
+++ b/src/kde/kf6/CMakeLists.txt
@@ -1,10 +1,4 @@
 # KDE Frameworks 6.x UI frontend
-CMAKE_POLICY(SET CMP0048 NEW)
-IF(POLICY CMP0063)
-	# CMake 3.3: Enable symbol visibility presets for all
-	# target types, including static libraries and executables.
-	CMAKE_POLICY(SET CMP0063 NEW)
-ENDIF(POLICY CMP0063)
 PROJECT(rom-properties-kf6 LANGUAGES CXX)
 
 # Find Qt6 and KF6.
diff --git a/src/kde/tests/CMakeLists.txt b/src/kde/tests/CMakeLists.txt
index bf984e51c..90fce995a 100644
--- a/src/kde/tests/CMakeLists.txt
+++ b/src/kde/tests/CMakeLists.txt
@@ -1,10 +1,4 @@
 # KDE UI frontend test suite
-CMAKE_POLICY(SET CMP0048 NEW)
-IF(POLICY CMP0063)
-	# CMake 3.3: Enable symbol visibility presets for all
-	# target types, including static libraries and executables.
-	CMAKE_POLICY(SET CMP0063 NEW)
-ENDIF(POLICY CMP0063)
 PROJECT(kde-tests LANGUAGES CXX)
 
 # Top-level src directory
diff --git a/src/libcachecommon/CMakeLists.txt b/src/libcachecommon/CMakeLists.txt
index 9ad462dde..7625899fe 100644
--- a/src/libcachecommon/CMakeLists.txt
+++ b/src/libcachecommon/CMakeLists.txt
@@ -1,10 +1,4 @@
 # Common cache management functions used by both Cache Manager and rp-download.
-CMAKE_POLICY(SET CMP0048 NEW)
-IF(POLICY CMP0063)
-	# CMake 3.3: Enable symbol visibility presets for all
-	# target types, including static libraries and executables.
-	CMAKE_POLICY(SET CMP0063 NEW)
-ENDIF(POLICY CMP0063)
 PROJECT(cachecommon LANGUAGES CXX)
 
 SET(${PROJECT_NAME}_SRCS
diff --git a/src/libcachecommon/tests/CMakeLists.txt b/src/libcachecommon/tests/CMakeLists.txt
index 8d7991137..c4281ceb6 100644
--- a/src/libcachecommon/tests/CMakeLists.txt
+++ b/src/libcachecommon/tests/CMakeLists.txt
@@ -1,10 +1,4 @@
 # libcachecommon test suite
-CMAKE_POLICY(SET CMP0048 NEW)
-IF(POLICY CMP0063)
-	# CMake 3.3: Enable symbol visibility presets for all
-	# target types, including static libraries and executables.
-	CMAKE_POLICY(SET CMP0063 NEW)
-ENDIF(POLICY CMP0063)
 PROJECT(libcachecommon-tests LANGUAGES CXX)
 
 # Top-level src directory.
diff --git a/src/libi18n/CMakeLists.txt b/src/libi18n/CMakeLists.txt
index bb0870ac5..0f33d0aa0 100644
--- a/src/libi18n/CMakeLists.txt
+++ b/src/libi18n/CMakeLists.txt
@@ -1,10 +1,4 @@
 # Internationalization support code.
-CMAKE_POLICY(SET CMP0048 NEW)
-IF(POLICY CMP0063)
-	# CMake 3.3: Enable symbol visibility presets for all
-	# target types, including static libraries and executables.
-	CMAKE_POLICY(SET CMP0063 NEW)
-ENDIF(POLICY CMP0063)
 PROJECT(i18n LANGUAGES C)
 
 # NOTE: This subdirectory is always built, even if NLS is disabled,
diff --git a/src/libromdata/CMakeLists.txt b/src/libromdata/CMakeLists.txt
index 82fe03dae..38e9a4d01 100644
--- a/src/libromdata/CMakeLists.txt
+++ b/src/libromdata/CMakeLists.txt
@@ -1,10 +1,4 @@
 # RomData subclasses and factory class.
-CMAKE_POLICY(SET CMP0048 NEW)
-IF(POLICY CMP0063)
-	# CMake 3.3: Enable symbol visibility presets for all
-	# target types, including static libraries and executables.
-	CMAKE_POLICY(SET CMP0063 NEW)
-ENDIF(POLICY CMP0063)
 PROJECT(romdata LANGUAGES CXX)
 
 IF(NOT WIN32)
diff --git a/src/libromdata/tests/CMakeLists.txt b/src/libromdata/tests/CMakeLists.txt
index b3d9c480e..8bb5b9b5e 100644
--- a/src/libromdata/tests/CMakeLists.txt
+++ b/src/libromdata/tests/CMakeLists.txt
@@ -1,10 +1,4 @@
 # libromdata test suite
-CMAKE_POLICY(SET CMP0048 NEW)
-IF(POLICY CMP0063)
-	# CMake 3.3: Enable symbol visibility presets for all
-	# target types, including static libraries and executables.
-	CMAKE_POLICY(SET CMP0063 NEW)
-ENDIF(POLICY CMP0063)
 PROJECT(libromdata-tests LANGUAGES C CXX)
 
 # Current binary directory for config.libromdata-tests.h
diff --git a/src/librpbase/CMakeLists.txt b/src/librpbase/CMakeLists.txt
index 657379fcf..4dd4cd6aa 100644
--- a/src/librpbase/CMakeLists.txt
+++ b/src/librpbase/CMakeLists.txt
@@ -1,10 +1,4 @@
 # rom-properties base library
-CMAKE_POLICY(SET CMP0048 NEW)
-IF(POLICY CMP0063)
-	# CMake 3.3: Enable symbol visibility presets for all
-	# target types, including static libraries and executables.
-	CMAKE_POLICY(SET CMP0063 NEW)
-ENDIF(POLICY CMP0063)
 PROJECT(rpbase LANGUAGES C CXX)
 
 IF(NOT WIN32)
diff --git a/src/librpbase/tests/CMakeLists.txt b/src/librpbase/tests/CMakeLists.txt
index 1f39eb9dc..6f5bbfc88 100644
--- a/src/librpbase/tests/CMakeLists.txt
+++ b/src/librpbase/tests/CMakeLists.txt
@@ -1,10 +1,4 @@
 # librpbase test suite
-CMAKE_POLICY(SET CMP0048 NEW)
-IF(POLICY CMP0063)
-	# CMake 3.3: Enable symbol visibility presets for all
-	# target types, including static libraries and executables.
-	CMAKE_POLICY(SET CMP0063 NEW)
-ENDIF(POLICY CMP0063)
 PROJECT(librpbase-tests LANGUAGES CXX)
 
 # Top-level src directory.
diff --git a/src/librpcpu/CMakeLists.txt b/src/librpcpu/CMakeLists.txt
index 81811d8e6..e91431617 100644
--- a/src/librpcpu/CMakeLists.txt
+++ b/src/librpcpu/CMakeLists.txt
@@ -1,10 +1,4 @@
 # rom-properties CPU support library
-CMAKE_POLICY(SET CMP0048 NEW)
-IF(POLICY CMP0063)
-	# CMake 3.3: Enable symbol visibility presets for all
-	# target types, including static libraries and executables.
-	CMAKE_POLICY(SET CMP0063 NEW)
-ENDIF(POLICY CMP0063)
 PROJECT(rpcpu LANGUAGES C)
 
 # Check for C headers.
diff --git a/src/librpfile/CMakeLists.txt b/src/librpfile/CMakeLists.txt
index 3a25eaecd..fb414f2b0 100644
--- a/src/librpfile/CMakeLists.txt
+++ b/src/librpfile/CMakeLists.txt
@@ -1,10 +1,4 @@
 # rom-properties file handling library
-CMAKE_POLICY(SET CMP0048 NEW)
-IF(POLICY CMP0063)
-	# CMake 3.3: Enable symbol visibility presets for all
-	# target types, including static libraries and executables.
-	CMAKE_POLICY(SET CMP0063 NEW)
-ENDIF(POLICY CMP0063)
 PROJECT(rpfile LANGUAGES CXX)
 
 # Check for C library functions.
diff --git a/src/librpsecure/CMakeLists.txt b/src/librpsecure/CMakeLists.txt
index 23a0c7806..911ea867d 100644
--- a/src/librpsecure/CMakeLists.txt
+++ b/src/librpsecure/CMakeLists.txt
@@ -1,10 +1,4 @@
 # Security functionality
-CMAKE_POLICY(SET CMP0048 NEW)
-IF(POLICY CMP0063)
-	# CMake 3.3: Enable symbol visibility presets for all
-	# target types, including static libraries and executables.
-	CMAKE_POLICY(SET CMP0063 NEW)
-ENDIF(POLICY CMP0063)
 PROJECT(rpsecure LANGUAGES C)
 
 OPTION(ENABLE_EXTRA_SECURITY "Enable extra security functionality if available." ON)
diff --git a/src/librptext/CMakeLists.txt b/src/librptext/CMakeLists.txt
index 692022238..2303d07b8 100644
--- a/src/librptext/CMakeLists.txt
+++ b/src/librptext/CMakeLists.txt
@@ -1,10 +1,4 @@
 # rom-properties base library
-CMAKE_POLICY(SET CMP0048 NEW)
-IF(POLICY CMP0063)
-	# CMake 3.3: Enable symbol visibility presets for all
-	# target types, including static libraries and executables.
-	CMAKE_POLICY(SET CMP0063 NEW)
-ENDIF(POLICY CMP0063)
 PROJECT(rptext LANGUAGES C CXX)
 
 IF(NOT WIN32)
diff --git a/src/librptext/tests/CMakeLists.txt b/src/librptext/tests/CMakeLists.txt
index 7d4b3c6b7..7d01f337b 100644
--- a/src/librptext/tests/CMakeLists.txt
+++ b/src/librptext/tests/CMakeLists.txt
@@ -1,10 +1,4 @@
 # librptext test suite
-CMAKE_POLICY(SET CMP0048 NEW)
-IF(POLICY CMP0063)
-	# CMake 3.3: Enable symbol visibility presets for all
-	# target types, including static libraries and executables.
-	CMAKE_POLICY(SET CMP0063 NEW)
-ENDIF(POLICY CMP0063)
 PROJECT(librpbase-tests LANGUAGES CXX)
 
 # Top-level src directory.
diff --git a/src/librptexture/CMakeLists.txt b/src/librptexture/CMakeLists.txt
index 031cb9d86..d728ba58b 100644
--- a/src/librptexture/CMakeLists.txt
+++ b/src/librptexture/CMakeLists.txt
@@ -1,10 +1,4 @@
 # rom-properties texture decoding library
-CMAKE_POLICY(SET CMP0048 NEW)
-IF(POLICY CMP0063)
-	# CMake 3.3: Enable symbol visibility presets for all
-	# target types, including static libraries and executables.
-	CMAKE_POLICY(SET CMP0063 NEW)
-ENDIF(POLICY CMP0063)
 PROJECT(rptexture LANGUAGES CXX)
 
 # OpenMP (TODO: AUTO/ON/OFF?)
diff --git a/src/librptexture/tests/CMakeLists.txt b/src/librptexture/tests/CMakeLists.txt
index 1c7214951..1e8c0920f 100644
--- a/src/librptexture/tests/CMakeLists.txt
+++ b/src/librptexture/tests/CMakeLists.txt
@@ -1,10 +1,4 @@
 # librptexture test suite
-CMAKE_POLICY(SET CMP0048 NEW)
-IF(POLICY CMP0063)
-	# CMake 3.3: Enable symbol visibility presets for all
-	# target types, including static libraries and executables.
-	CMAKE_POLICY(SET CMP0063 NEW)
-ENDIF(POLICY CMP0063)
 PROJECT(librptexture-tests LANGUAGES CXX)
 
 # Top-level src directory.
diff --git a/src/librpthreads/CMakeLists.txt b/src/librpthreads/CMakeLists.txt
index 090aba530..4b2987617 100644
--- a/src/librpthreads/CMakeLists.txt
+++ b/src/librpthreads/CMakeLists.txt
@@ -1,10 +1,4 @@
 # Threading wrapper library
-CMAKE_POLICY(SET CMP0048 NEW)
-IF(POLICY CMP0063)
-	# CMake 3.3: Enable symbol visibility presets for all
-	# target types, including static libraries and executables.
-	CMAKE_POLICY(SET CMP0063 NEW)
-ENDIF(POLICY CMP0063)
 PROJECT(rpthreads LANGUAGES C CXX)
 
 # Find the system threading library.
diff --git a/src/libunixcommon/CMakeLists.txt b/src/libunixcommon/CMakeLists.txt
index 936568651..063efe9fd 100644
--- a/src/libunixcommon/CMakeLists.txt
+++ b/src/libunixcommon/CMakeLists.txt
@@ -1,10 +1,4 @@
 # Unix and Unix-like systems common code
-CMAKE_POLICY(SET CMP0048 NEW)
-IF(POLICY CMP0063)
-	# CMake 3.3: Enable symbol visibility presets for all
-	# target types, including static libraries and executables.
-	CMAKE_POLICY(SET CMP0063 NEW)
-ENDIF(POLICY CMP0063)
 # FIXME: CMake-3.15.5 on travis-ci can't find Objective-C...
 PROJECT(unixcommon LANGUAGES C CXX)
 
diff --git a/src/libwin32common/CMakeLists.txt b/src/libwin32common/CMakeLists.txt
index 6fe1802b0..73045146d 100644
--- a/src/libwin32common/CMakeLists.txt
+++ b/src/libwin32common/CMakeLists.txt
@@ -1,10 +1,4 @@
 # Windows common code
-CMAKE_POLICY(SET CMP0048 NEW)
-IF(POLICY CMP0063)
-	# CMake 3.3: Enable symbol visibility presets for all
-	# target types, including static libraries and executables.
-	CMAKE_POLICY(SET CMP0063 NEW)
-ENDIF(POLICY CMP0063)
 PROJECT(win32common LANGUAGES C CXX)
 
 ### NOTE: DelayLoadHelper should NOT be compiled here.
diff --git a/src/libwin32darkmode/CMakeLists.txt b/src/libwin32darkmode/CMakeLists.txt
index afae02660..2b90a738b 100644
--- a/src/libwin32darkmode/CMakeLists.txt
+++ b/src/libwin32darkmode/CMakeLists.txt
@@ -1,12 +1,5 @@
 # Win32 dark mode
 # https://github.com/ysc3839/win32-darkmode
-CMAKE_MINIMUM_REQUIRED(VERSION 3.0)
-CMAKE_POLICY(SET CMP0048 NEW)
-IF(POLICY CMP0063)
-	# CMake 3.3: Enable symbol visibility presets for all
-	# target types, including static libraries and executables.
-	CMAKE_POLICY(SET CMP0063 NEW)
-ENDIF(POLICY CMP0063)
 PROJECT(win32darkmode LANGUAGES CXX)
 
 # Sources and headers.
diff --git a/src/libwin32ui/CMakeLists.txt b/src/libwin32ui/CMakeLists.txt
index 3ce1f3649..a66f015a7 100644
--- a/src/libwin32ui/CMakeLists.txt
+++ b/src/libwin32ui/CMakeLists.txt
@@ -1,10 +1,4 @@
 # Windows UI common code
-CMAKE_POLICY(SET CMP0048 NEW)
-IF(POLICY CMP0063)
-	# CMake 3.3: Enable symbol visibility presets for all
-	# target types, including static libraries and executables.
-	CMAKE_POLICY(SET CMP0063 NEW)
-ENDIF(POLICY CMP0063)
 PROJECT(win32ui LANGUAGES C CXX)
 
 # Check for Windows SDK headers.
diff --git a/src/rp-download/CMakeLists.txt b/src/rp-download/CMakeLists.txt
index 66744900b..41c4b7fd5 100644
--- a/src/rp-download/CMakeLists.txt
+++ b/src/rp-download/CMakeLists.txt
@@ -1,10 +1,4 @@
 # Online downloader program for external images
-CMAKE_POLICY(SET CMP0048 NEW)
-IF(POLICY CMP0063)
-	# CMake 3.3: Enable symbol visibility presets for all
-	# target types, including static libraries and executables.
-	CMAKE_POLICY(SET CMP0063 NEW)
-ENDIF(POLICY CMP0063)
 PROJECT(rp-download LANGUAGES C CXX)
 
 IF(NOT WIN32)
diff --git a/src/rp-stub/CMakeLists.txt b/src/rp-stub/CMakeLists.txt
index d18f49adb..acad9bdcd 100644
--- a/src/rp-stub/CMakeLists.txt
+++ b/src/rp-stub/CMakeLists.txt
@@ -1,10 +1,4 @@
 # Stub executable for Unix and Unix-like thumbnailers
-CMAKE_POLICY(SET CMP0048 NEW)
-IF(POLICY CMP0063)
-	# CMake 3.3: Enable symbol visibility presets for all
-	# target types, including static libraries and executables.
-	CMAKE_POLICY(SET CMP0063 NEW)
-ENDIF(POLICY CMP0063)
 PROJECT(rp-stub LANGUAGES C)
 
 # rp-stub
diff --git a/src/rpcli/CMakeLists.txt b/src/rpcli/CMakeLists.txt
index 7758d4380..c66864885 100644
--- a/src/rpcli/CMakeLists.txt
+++ b/src/rpcli/CMakeLists.txt
@@ -1,10 +1,4 @@
 # Command line interface
-CMAKE_POLICY(SET CMP0048 NEW)
-IF(POLICY CMP0063)
-	# CMake 3.3: Enable symbol visibility presets for all
-	# target types, including static libraries and executables.
-	CMAKE_POLICY(SET CMP0063 NEW)
-ENDIF(POLICY CMP0063)
 PROJECT(rpcli LANGUAGES C CXX)
 
 # Sources and headers.
diff --git a/src/svrplus/CMakeLists.txt b/src/svrplus/CMakeLists.txt
index e2549a38e..436234308 100644
--- a/src/svrplus/CMakeLists.txt
+++ b/src/svrplus/CMakeLists.txt
@@ -1,10 +1,4 @@
 # Windows DLL registration frontend
-CMAKE_POLICY(SET CMP0048 NEW)
-IF(POLICY CMP0063)
-	# CMake 3.3: Enable symbol visibility presets for all
-	# target types, including static libraries and executables.
-	CMAKE_POLICY(SET CMP0063 NEW)
-ENDIF(POLICY CMP0063)
 PROJECT(svrplus LANGUAGES C)
 
 # Create the manifest file.
diff --git a/src/win32/CMakeLists.txt b/src/win32/CMakeLists.txt
index 5eaea2335..dccb4e6b7 100644
--- a/src/win32/CMakeLists.txt
+++ b/src/win32/CMakeLists.txt
@@ -1,10 +1,4 @@
 # Windows UI frontend
-CMAKE_POLICY(SET CMP0048 NEW)
-IF(POLICY CMP0063)
-	# CMake 3.3: Enable symbol visibility presets for all
-	# target types, including static libraries and executables.
-	CMAKE_POLICY(SET CMP0063 NEW)
-ENDIF(POLICY CMP0063)
 PROJECT(rom-properties LANGUAGES C CXX)
 
 # Check for Windows SDK headers and symbols.