2021-05-07 10:07:42 +02:00
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# libPNG
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# Select the version of libpng to use, default is builtin
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if (NOT USE_SYSTEM_LIBPNG)
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# We use libpng's static library and don't need to build the shared library and run the tests
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2023-07-11 20:40:30 +02:00
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set(PNG_SHARED OFF CACHE BOOL "Build shared lib")
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set(PNG_TESTS OFF CACHE BOOL "Build libpng tests")
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2024-03-18 00:34:08 +01:00
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if (NOT USE_SYSTEM_ZLIB)
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set(PNG_BUILD_ZLIB ON CACHE BOOL "Custom zlib location, else find_package is used")
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add_library(ZLIB::ZLIB INTERFACE IMPORTED)
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target_link_libraries(ZLIB::ZLIB INTERFACE 3rdparty_zlib)
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endif()
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2021-05-07 10:07:42 +02:00
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set(SKIP_INSTALL_ALL ON)
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add_subdirectory(libpng EXCLUDE_FROM_ALL)
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target_include_directories(png_static INTERFACE "${libpng_BINARY_DIR}" "${libpng_SOURCE_DIR}")
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2023-07-11 20:40:30 +02:00
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set(LIBPNG_TARGET png_static PARENT_SCOPE)
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2021-05-07 10:07:42 +02:00
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else()
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find_package(PNG REQUIRED)
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add_library(3rdparty_system_libpng INTERFACE)
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target_include_directories(3rdparty_system_libpng INTERFACE ${PNG_INCLUDE_DIR})
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target_link_libraries(3rdparty_system_libpng INTERFACE ${PNG_LIBRARY})
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target_compile_definitions(3rdparty_system_libpng INTERFACE ${PNG_DEFINITIONS})
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set(LIBPNG_TARGET 3rdparty_system_libpng PARENT_SCOPE)
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endif()
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