61 lines
1.6 KiB
CMake
61 lines
1.6 KiB
CMake
# - Find the native PNG includes and library
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#
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# This module defines
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# PNG_INCLUDE_DIR, where to find png.h, etc.
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# PNG_LIBRARIES, the libraries to link against to use PNG.
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# PNG_DEFINITIONS - You should ADD_DEFINITONS(${PNG_DEFINITIONS}) before compiling code that includes png library files.
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# PNG_FOUND, If false, do not try to use PNG.
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# also defined, but not for general use are
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# PNG_LIBRARY, where to find the PNG library.
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# None of the above will be defined unles zlib can be found.
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# PNG depends on Zlib
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#
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INCLUDE(FindZLIB)
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SET(PNG_FOUND "NO")
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IF(ZLIB_FOUND)
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FIND_PATH(PNG_PNG_INCLUDE_DIR png.h
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/usr/local/include
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/usr/include
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/usr/local/include/libpng # OpenBSD
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)
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SET(PNG_NAMES ${PNG_NAMES} png libpng)
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FIND_LIBRARY(PNG_LIBRARY
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NAMES ${PNG_NAMES}
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PATHS /usr/lib64 /usr/lib /usr/local/lib
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)
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IF (PNG_LIBRARY AND PNG_PNG_INCLUDE_DIR)
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# png.h includes zlib.h. Sigh.
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SET(PNG_INCLUDE_DIR ${PNG_PNG_INCLUDE_DIR} ${ZLIB_INCLUDE_DIR} )
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SET(PNG_LIBRARIES ${PNG_LIBRARY} ${ZLIB_LIBRARY})
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SET(PNG_FOUND "YES")
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SET(HAVE_PNG_H)
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IF (CYGWIN)
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IF(BUILD_SHARED_LIBS)
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# No need to define PNG_USE_DLL here, because it's default for Cygwin.
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ELSE(BUILD_SHARED_LIBS)
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SET (PNG_DEFINITIONS -DPNG_STATIC)
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ENDIF(BUILD_SHARED_LIBS)
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ENDIF (CYGWIN)
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ENDIF (PNG_LIBRARY AND PNG_PNG_INCLUDE_DIR)
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ENDIF(ZLIB_FOUND)
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IF (PNG_FOUND)
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IF (NOT PNG_FIND_QUIETLY)
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MESSAGE(STATUS "Found PNG: ${PNG_LIBRARY}")
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ENDIF (NOT PNG_FIND_QUIETLY)
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ELSE (PNG_FOUND)
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IF (PNG_FIND_REQUIRED)
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MESSAGE(FATAL_ERROR "Could not find PNG library")
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ENDIF (PNG_FIND_REQUIRED)
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ENDIF (PNG_FOUND)
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MARK_AS_ADVANCED(PNG_PNG_INCLUDE_DIR PNG_LIBRARY )
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