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47 lines
1.5 KiB
CMake
47 lines
1.5 KiB
CMake
include (ExternalProject)
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set(zlib_INCLUDE_DIR ${CMAKE_CURRENT_BINARY_DIR}/external/zlib_archive)
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set(ZLIB_URL https://github.com/madler/zlib)
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set(ZLIB_BUILD ${CMAKE_CURRENT_BINARY_DIR}/zlib/src/zlib)
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set(ZLIB_INSTALL ${CMAKE_CURRENT_BINARY_DIR}/zlib/install)
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set(ZLIB_TAG 50893291621658f355bc5b4d450a8d06a563053d)
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if(WIN32)
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set(zlib_STATIC_LIBRARIES
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debug ${CMAKE_CURRENT_BINARY_DIR}/zlib/install/lib/zlibstaticd.lib
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optimized ${CMAKE_CURRENT_BINARY_DIR}/zlib/install/lib/zlibstatic.lib)
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else()
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set(zlib_STATIC_LIBRARIES
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${CMAKE_CURRENT_BINARY_DIR}/zlib/install/lib/libz.a)
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endif()
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set(ZLIB_HEADERS
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"${ZLIB_INSTALL}/include/zconf.h"
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"${ZLIB_INSTALL}/include/zlib.h"
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)
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ExternalProject_Add(zlib
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PREFIX zlib
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GIT_REPOSITORY ${ZLIB_URL}
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GIT_TAG ${ZLIB_TAG}
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INSTALL_DIR ${ZLIB_INSTALL}
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BUILD_IN_SOURCE 1
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DOWNLOAD_DIR "${DOWNLOAD_LOCATION}"
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CMAKE_CACHE_ARGS
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-DCMAKE_BUILD_TYPE:STRING=Release
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-DCMAKE_INSTALL_PREFIX:STRING=${ZLIB_INSTALL}
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-DCMAKE_POSITION_INDEPENDENT_CODE:BOOL=ON
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)
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# put zlib includes in the directory where they are expected
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add_custom_target(zlib_create_destination_dir
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COMMAND ${CMAKE_COMMAND} -E make_directory ${zlib_INCLUDE_DIR}
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DEPENDS zlib)
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add_custom_target(zlib_copy_headers_to_destination
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DEPENDS zlib_create_destination_dir)
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foreach(header_file ${ZLIB_HEADERS})
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add_custom_command(TARGET zlib_copy_headers_to_destination PRE_BUILD
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COMMAND ${CMAKE_COMMAND} -E copy_if_different ${header_file} ${zlib_INCLUDE_DIR})
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endforeach()
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