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- # - Find the native PNG includes and library
- #
- # This module defines
- # PNG_INCLUDE_DIR, where to find png.h, etc.
- # PNG_LIBRARIES, the libraries to link against to use PNG.
- # PNG_DEFINITIONS - You should ADD_DEFINITONS(${PNG_DEFINITIONS}) before compiling code that includes png library files.
- # PNG_FOUND, If false, do not try to use PNG.
- # also defined, but not for general use are
- # PNG_LIBRARY, where to find the PNG library.
- # None of the above will be defined unles zlib can be found.
- # PNG depends on Zlib
- #
- # Copyright (c) 2002 Kitware, Inc., Insight Consortium. All rights reserved.
- # See Copyright.txt or http://www.cmake.org/HTML/Copyright.html for details.
- INCLUDE(FindZLIB)
- SET(PNG_FOUND "NO")
- IF(ZLIB_FOUND)
- FIND_PATH(PNG_PNG_INCLUDE_DIR png.h
- /usr/local/include
- /usr/include
- /usr/local/include/libpng # OpenBSD
- )
- SET(PNG_NAMES ${PNG_NAMES} png libpng)
- FIND_LIBRARY(PNG_LIBRARY
- NAMES ${PNG_NAMES}
- PATHS /usr/lib64 /usr/lib /usr/local/lib
- )
- IF (PNG_LIBRARY AND PNG_PNG_INCLUDE_DIR)
- # png.h includes zlib.h. Sigh.
- SET(PNG_INCLUDE_DIR ${PNG_PNG_INCLUDE_DIR} ${ZLIB_INCLUDE_DIR} )
- SET(PNG_LIBRARIES ${PNG_LIBRARY} ${ZLIB_LIBRARY})
- SET(PNG_FOUND "YES")
- SET(HAVE_PNG_H)
- IF (CYGWIN)
- IF(BUILD_SHARED_LIBS)
- # No need to define PNG_USE_DLL here, because it's default for Cygwin.
- ELSE(BUILD_SHARED_LIBS)
- SET (PNG_DEFINITIONS -DPNG_STATIC)
- ENDIF(BUILD_SHARED_LIBS)
- ENDIF (CYGWIN)
- ENDIF (PNG_LIBRARY AND PNG_PNG_INCLUDE_DIR)
- ENDIF(ZLIB_FOUND)
- IF (PNG_FOUND)
- IF (NOT PNG_FIND_QUIETLY)
- MESSAGE(STATUS "Found PNG: ${PNG_LIBRARY}")
- ENDIF (NOT PNG_FIND_QUIETLY)
- ELSE (PNG_FOUND)
- IF (PNG_FIND_REQUIRED)
- MESSAGE(FATAL_ERROR "Could not find PNG library")
- ENDIF (PNG_FIND_REQUIRED)
- ENDIF (PNG_FOUND)
- MARK_AS_ADVANCED(PNG_PNG_INCLUDE_DIR PNG_LIBRARY )
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