35 lines
1.3 KiB
CMake
35 lines
1.3 KiB
CMake
# -*- cmake -*-
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include(Prebuilt)
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set(PNG_FIND_QUIETLY ON)
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set(PNG_FIND_REQUIRED ON)
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if (USESYSTEMLIBS)
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include(FindPNG)
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else (USESYSTEMLIBS)
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use_prebuilt_binary(libpng)
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if (WINDOWS)
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set(PNG_LIBRARIES libpng16)
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set(PNG_INCLUDE_DIRS ${LIBS_PREBUILT_DIR}/include/libpng16)
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elseif(DARWIN)
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set(PNG_LIBRARIES png16)
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set(PNG_INCLUDE_DIRS ${LIBS_PREBUILT_DIR}/include/libpng16)
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else()
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#
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# When we have updated static libraries in competition with older
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# shared libraries and we want the former to win, we need to do some
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# extra work. The *_PRELOAD_ARCHIVES settings are invoked early
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# and will pull in the entire archive to the binary giving it
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# priority in symbol resolution. Beware of cmake moving the
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# achive load itself to another place on the link command line. If
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# that happens, you can try something like -Wl,-lpng16 here to hide
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# the archive. Also be aware that the linker will not tolerate a
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# second whole-archive load of the archive. See viewer's
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# CMakeLists.txt for more information.
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#
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set(PNG_PRELOAD_ARCHIVES -Wl,--whole-archive png16 -Wl,--no-whole-archive)
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set(PNG_LIBRARIES png16)
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set(PNG_INCLUDE_DIRS ${LIBS_PREBUILT_DIR}/include/libpng16)
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endif()
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endif (USESYSTEMLIBS)
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