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Fix for universal binaries on macOS
Fix the issue of a clang: error: no such file or directory: 'x86_64' error on building universal binaries on macOS. It is also necessary to specify: -DCMAKE_C_FLAGS="-DPNG_ARM_NEON_OPT=0" Example CMake command: cmake -S libpng \ -B build_libpng \ -DCMAKE_OSX_ARCHITECTURES="arm64;x86_64" \ -DCMAKE_C_FLAGS="-DPNG_ARM_NEON_OPT=0" Signed-off-by: Cosmin Truta <ctruta@gmail.com>
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@ -1,6 +1,6 @@
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# CMakeLists.txt
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# Copyright (c) 2018-2022 Cosmin Truta
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# Copyright (c) 2018-2023 Cosmin Truta
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# Copyright (c) 2007,2009-2018 Glenn Randers-Pehrson
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# Written by Christian Ehrlicher, 2007
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# Revised by Roger Lowman, 2009-2010
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@ -20,6 +20,7 @@
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# Revised by Gleb Mazovetskiy, 2021
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# Revised by Christopher Sean Morrison, 2022
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# Revised by Martin Storsjo, 2022
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# Revised by Jon Creighton, 2023
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# This code is released under the libpng license.
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# For conditions of distribution and use, see the disclaimer
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@ -24,10 +24,10 @@ set(ZLIBINCDIR "@ZLIB_INCLUDE_DIRS@")
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set(PLATFORM_C_FLAGS)
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if(APPLE)
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set(CMAKE_OSX_ARCHITECTURES "@CMAKE_OSX_ARCHITECTURES@")
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set(CMAKE_OSX_INTERNAL_ARCHITECTURES "@CMAKE_OSX_INTERNAL_ARCHITECTURES@")
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set(CMAKE_OSX_SYSROOT "@CMAKE_OSX_SYSROOT@")
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if(CMAKE_OSX_ARCHITECTURES)
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set(PLATFORM_C_FLAGS ${PLATFORM_C_FLAGS} -arch ${CMAKE_OSX_ARCHITECTURES})
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if(CMAKE_OSX_INTERNAL_ARCHITECTURES)
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set(PLATFORM_C_FLAGS ${PLATFORM_C_FLAGS} -arch ${CMAKE_OSX_INTERNAL_ARCHITECTURES})
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endif()
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if(CMAKE_OSX_SYSROOT)
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set(PLATFORM_C_FLAGS ${PLATFORM_C_FLAGS} -isysroot ${CMAKE_OSX_SYSROOT})
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