38 lines
1.2 KiB
CMake
38 lines
1.2 KiB
CMake
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# FindZLIB.cmake - WASM builds use Emscripten's zlib port
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# Emscripten provides zlib via -sUSE_ZLIB=1 flag
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if(EMSCRIPTEN)
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message(STATUS "Using Emscripten's zlib port (-sUSE_ZLIB=1)")
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# Find the Emscripten cache sysroot
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execute_process(
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COMMAND em-config CACHE
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OUTPUT_VARIABLE EMSCRIPTEN_CACHE
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OUTPUT_STRIP_TRAILING_WHITESPACE
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)
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# Set ZLIB variables
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set(ZLIB_FOUND TRUE)
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set(ZLIB_INCLUDE_DIR "${EMSCRIPTEN_CACHE}/sysroot/include")
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set(ZLIB_INCLUDE_DIRS "${ZLIB_INCLUDE_DIR}")
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# The library will be linked via -sUSE_ZLIB=1
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# We set a placeholder for CMake checks
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set(ZLIB_LIBRARY "-sUSE_ZLIB=1")
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set(ZLIB_LIBRARIES "-sUSE_ZLIB=1")
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set(ZLIB_VERSION_STRING "1.3.1")
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# Create imported target
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if(NOT TARGET ZLIB::ZLIB)
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add_library(ZLIB::ZLIB INTERFACE IMPORTED)
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set_target_properties(ZLIB::ZLIB PROPERTIES
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INTERFACE_INCLUDE_DIRECTORIES "${ZLIB_INCLUDE_DIR}"
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INTERFACE_LINK_LIBRARIES "-sUSE_ZLIB=1"
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)
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endif()
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mark_as_advanced(ZLIB_INCLUDE_DIR ZLIB_LIBRARY)
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else()
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# For non-WASM builds, use the system FindZLIB
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include(${CMAKE_ROOT}/Modules/FindZLIB.cmake OPTIONAL)
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endif()
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