| # - 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 |
| INCLUDE(FindZLIB) |
| |
| IF(ZLIB_FOUND) |
| FIND_PATH(PNG_PNG_INCLUDE_DIR png.h |
| /usr/local/include/libpng # OpenBSD |
| ) |
| |
| SET(PNG_NAMES ${PNG_NAMES} png libpng) |
| FIND_LIBRARY(PNG_LIBRARY NAMES ${PNG_NAMES} ) |
| |
| 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}) |
| |
| 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) |
| |
| # handle the QUIETLY and REQUIRED arguments and set PNG_FOUND to TRUE if |
| # all listed variables are TRUE |
| INCLUDE(FindPackageHandleStandardArgs) |
| FIND_PACKAGE_HANDLE_STANDARD_ARGS(PNG DEFAULT_MSG PNG_LIBRARY PNG_PNG_INCLUDE_DIR) |
| |
| MARK_AS_ADVANCED(PNG_PNG_INCLUDE_DIR PNG_LIBRARY ) |
