54 lines
1.6 KiB
CMake
54 lines
1.6 KiB
CMake
# ==============================================================================
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# Findzlib.cmake
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# ==============================================================================
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# This module fetches and builds the zlib compression library.
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# https://github.com/madler/zlib
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#
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# Targets provided:
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# ZLIB::ZLIBSTATIC - Static library target
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#
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# Variables set:
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# zlib_FOUND - TRUE if zlib is available
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# zlib_LIBRARIES - The library target (ZLIB::ZLIBSTATIC)
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# zlib_INCLUDE_DIR - Include directories for zlib
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# ==============================================================================
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if (DEFINED _FINDZLIB_INCLUDED)
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return()
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endif()
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set(_FINDZLIB_INCLUDED TRUE)
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if (DEFINED zlib_FIND_VERSION AND NOT zlib_FIND_VERSION STREQUAL "")
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set(ZLIB_TAG "v${zlib_FIND_VERSION}")
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else()
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set(ZLIB_TAG "v1.3.2")
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endif()
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message(STATUS "Fetching zlib @ ${ZLIB_TAG}")
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include(FetchContent)
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find_program(GIT_EXECUTABLE git)
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if (NOT GIT_EXECUTABLE)
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message(FATAL_ERROR "Fetch with zip not supported.")
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endif()
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FetchContent_Declare(
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zlib
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GIT_REPOSITORY https://github.com/madler/zlib.git
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GIT_TAG ${ZLIB_TAG}
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GIT_SHALLOW TRUE
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EXCLUDE_FROM_ALL
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)
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set(ZLIB_BUILD_EXAMPLES OFF CACHE BOOL "" FORCE)
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FetchContent_MakeAvailable(zlib)
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# zlib's CMakeLists provides ZLIB::ZLIBSTATIC for the static build
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set(zlib_FOUND TRUE)
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set(zlib_LIBRARIES ZLIB::ZLIBSTATIC)
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set(zlib_INCLUDE_DIR "${zlib_SOURCE_DIR};${zlib_BINARY_DIR}")
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set(ZLIB_LICENSE_FILE "${zlib_SOURCE_DIR}/LICENSE" CACHE FILEPATH "Path to zlib license file")
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