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https://git.do.srb2.org/STJr/SRB2.git
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70 lines
2 KiB
CMake
70 lines
2 KiB
CMake
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CPMAddPackage(
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NAME png
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VERSION 1.6.38
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URL "https://github.com/glennrp/libpng/archive/refs/tags/v1.6.38.zip"
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# png cmake build is broken on msys/mingw32
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DOWNLOAD_ONLY YES
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)
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if(png_ADDED)
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# Since png's cmake build is broken, we're going to create a target manually
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set(
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PNG_SOURCES
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png.h
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pngconf.h
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pngpriv.h
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pngdebug.h
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pnginfo.h
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pngstruct.h
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png.c
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pngerror.c
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pngget.c
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pngmem.c
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pngpread.c
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pngread.c
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pngrio.c
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pngrtran.c
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pngrutil.c
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pngset.c
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pngtrans.c
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pngwio.c
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pngwrite.c
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pngwtran.c
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pngwutil.c
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)
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list(TRANSFORM PNG_SOURCES PREPEND "${png_SOURCE_DIR}/")
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add_custom_command(
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OUTPUT "${png_BINARY_DIR}/include/png.h" "${png_BINARY_DIR}/include/pngconf.h"
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COMMAND ${CMAKE_COMMAND} -E copy "${png_SOURCE_DIR}/png.h" "${png_SOURCE_DIR}/pngconf.h" "${png_BINARY_DIR}/include"
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DEPENDS "${png_SOURCE_DIR}/png.h" "${png_SOURCE_DIR}/pngconf.h"
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VERBATIM
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)
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add_custom_command(
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OUTPUT "${png_BINARY_DIR}/include/pnglibconf.h"
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COMMAND ${CMAKE_COMMAND} -E copy "${png_SOURCE_DIR}/scripts/pnglibconf.h.prebuilt" "${png_BINARY_DIR}/include/pnglibconf.h"
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DEPENDS "${png_SOURCE_DIR}/scripts/pnglibconf.h.prebuilt"
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VERBATIM
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)
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list(
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APPEND PNG_SOURCES
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"${png_BINARY_DIR}/include/png.h"
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"${png_BINARY_DIR}/include/pngconf.h"
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"${png_BINARY_DIR}/include/pnglibconf.h"
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)
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add_library(png "${SRB2_INTERNAL_LIBRARY_TYPE}" ${PNG_SOURCES})
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# Disable ARM NEON since having it automatic breaks libpng external build on clang for some reason
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target_compile_definitions(png PRIVATE -DPNG_ARM_NEON_OPT=0)
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# The png includes need to be available to consumers
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target_include_directories(png PUBLIC "${png_BINARY_DIR}/include")
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# ... and these also need to be present only for png build
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target_include_directories(png PRIVATE "${ZLIB_SOURCE_DIR}")
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target_include_directories(png PRIVATE "${ZLIB_BINARY_DIR}")
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target_include_directories(png PRIVATE "${png_BINARY_DIR}")
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target_link_libraries(png PRIVATE ZLIB::ZLIB)
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add_library(PNG::PNG ALIAS png)
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endif()
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