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include(functions/FetchContent_MakeAvailableExcludeFromAll)
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if(NOT DISABLE_LTO)
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# Force CMake to raise an error if INTERPROCEDURAL_OPTIMIZATION
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# is enabled and compiler does not support IPO
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set(CMAKE_POLICY_DEFAULT_CMP0069 NEW)
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endif()
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if(DEVILUTIONX_STATIC_LIBPNG)
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set(PNG_LIBRARY png_static)
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set(PNG_STATIC ON)
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set(PNG_SHARED OFF)
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else()
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set(PNG_LIBRARY png)
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set(PNG_STATIC OFF)
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set(PNG_SHARED ON)
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endif()
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set(PNG_TESTS OFF)
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set(PNG_EXECUTABLES OFF)
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set(SKIP_INSTALL_ALL ON)
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if(APPLE AND "${CMAKE_OSX_ARCHITECTURES}" STREQUAL "arm64")
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set(PNG_ARM_NEON "on" CACHE STRING "" FORCE)
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endif()
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include(FetchContent)
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FetchContent_Declare(libpng
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URL https://github.com/glennrp/libpng/archive/0a158f3506502dfa23edfc42790dfaed82efba17.tar.gz
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URL_HASH MD5=6d705417242732e8e081bff752c98c18
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)
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FetchContent_MakeAvailableExcludeFromAll(libpng)
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target_include_directories(${PNG_LIBRARY} INTERFACE
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$<BUILD_INTERFACE:${libpng_SOURCE_DIR}>
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$<BUILD_INTERFACE:${libpng_BINARY_DIR}>)
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add_library(PNG::PNG ALIAS ${PNG_LIBRARY})
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