mirror of
https://github.com/GerbilSoft/rom-properties.git
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54 lines
1.5 KiB
CMake
54 lines
1.5 KiB
CMake
# Check for zlib.
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# If zlib isn't found, extlib/zlib/ will be used instead.
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# Enable ZLIB const qualifiers.
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SET(ZLIB_DEFINITIONS -DZLIB_CONST)
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IF(NOT USE_INTERNAL_ZLIB)
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IF(ZLIB_LIBRARY MATCHES "^zlib$" OR ZLIB_LIBRARY MATCHES "^zlibstatic$")
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# Internal zlib was previously in use.
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UNSET(ZLIB_FOUND)
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UNSET(HAVE_ZLIB)
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UNSET(ZLIB_LIBRARY CACHE)
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UNSET(ZLIB_LIBRARIES CACHE)
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ENDIF()
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# Check for ZLIB.
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FIND_PACKAGE(ZLIB)
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IF(ZLIB_FOUND)
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# Found system ZLIB.
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SET(HAVE_ZLIB 1)
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ELSE()
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# System ZLIB was not found.
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MESSAGE(STATUS "Using the internal copy of zlib-ng since a system version was not found.")
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SET(USE_INTERNAL_ZLIB ON CACHE BOOL "Use the internal copy of zlib-ng" FORCE)
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ENDIF()
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ELSE()
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MESSAGE(STATUS "Using the internal copy of zlib-ng.")
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ENDIF(NOT USE_INTERNAL_ZLIB)
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IF(USE_INTERNAL_ZLIB)
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# Using the internal zlib library.
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SET(ZLIB_FOUND 1)
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SET(HAVE_ZLIB 1)
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# FIXME: When was it changed from LIBRARY to LIBRARIES?
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IF(WIN32)
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# Using DLLs on Windows.
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SET(USE_INTERNAL_ZLIB_DLL ON)
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SET(ZLIB_LIBRARY zlib CACHE INTERNAL "ZLIB library" FORCE)
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ELSE()
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# Using static linking on other systems.
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SET(USE_INTERNAL_ZLIB_DLL OFF)
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SET(ZLIB_LIBRARY zlibstatic CACHE INTERNAL "ZLIB library" FORCE)
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ENDIF()
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SET(ZLIB_LIBRARIES ${ZLIB_LIBRARY})
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# FIXME: When was it changed from DIR to DIRS?
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SET(ZLIB_INCLUDE_DIR
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${CMAKE_SOURCE_DIR}/extlib/zlib-ng
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${CMAKE_BINARY_DIR}/extlib/zlib-ng
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)
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SET(ZLIB_INCLUDE_DIRS ${ZLIB_INCLUDE_DIR})
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ELSE(USE_INTERNAL_ZLIB)
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SET(USE_INTERNAL_ZLIB_DLL OFF)
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ENDIF(USE_INTERNAL_ZLIB)
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