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46 lines
1.5 KiB
CMake
Vendored
46 lines
1.5 KiB
CMake
Vendored
# PNGConfig.cmake
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# Utility functions for configuring and building libpng
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# Copyright (c) 2025 Cosmin Truta
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#
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# Use, modification and distribution are subject to
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# the same licensing terms and conditions as libpng.
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# Please see the copyright notice in png.h or visit
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# http://libpng.org/pub/png/src/libpng-LICENSE.txt
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#
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# SPDX-License-Identifier: libpng-2.0
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# Check libconf file (pnglibconf.h.* or *.dfa):
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# png_check_libconf([HEADER <file>] [DFA_XTRA <file>])
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function(png_check_libconf)
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set(options)
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set(oneValueArgs HEADER DFA_XTRA)
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set(multiValueArgs)
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cmake_parse_arguments(_CHK "${options}" "${oneValueArgs}" "${multiValueArgs}" ${ARGN})
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if(_CHK_HEADER AND _CHK_DFA_XTRA)
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message(FATAL_ERROR "png_check_libconf: Mutually-exclusive arguments: HEADER and DFA_XTRA")
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endif()
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if(_CHK_HEADER)
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if(EXISTS "${_CHK_HEADER}")
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if("x${_CHK_HEADER}" STREQUAL "x${PNG_LIBCONF_HEADER_PREBUILT}")
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message(STATUS "Using standard libconf header: ${_CHK_HEADER}")
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else()
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message(STATUS "Using custom libconf header: ${_CHK_HEADER}")
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endif()
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else()
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message(SEND_ERROR "Could not find libconf header: ${_CHK_HEADER}")
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endif()
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else()
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if("x${_CHK_DFA_XTRA}" STREQUAL "x")
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message(STATUS "Creating standard configuration")
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elseif(EXISTS "${_CHK_DFA_XTRA}")
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message(STATUS "Creating custom configuration with DFA_XTRA file: ${_CHK_DFA_XTRA}")
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else()
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message(SEND_ERROR "Could not find DFA_XTRA file: ${_CHK_DFA_XTRA}")
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endif()
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endif()
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endfunction()
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