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# - Find PNG for Hugin 0.7 01Nov2007 TKSharpless
# Added to support Windows build but should work anywhere.
# After looking in UNIX standard places, tries wxWidgets build
# tree, which should have this package.
#
# Call FIND_PACKAGE(wxWidgets REQUIRED) before calling this!
#
# reads cache variables
# wxWidgets_ROOT_DIR
# wxWidgets_LIB_DIR
# defines cache variables
# PNG_INCLUDE_DIR, where to find headers
# PNG_LIBRARIES, list of release link libraries.
# PNG_FOUND, If != "YES", do not try to use PNG.
# None of the above will be defined unless ZLIB can be found
INCLUDE(FindZLIB)
include(FindLibraryWithDebug)
SET(PNG_FOUND "NO")
IF (ZLIB_FOUND)
FIND_PATH(PNG_INCLUDE_DIR png.h
/usr/local/include
/usr/include
${wxWidgets_ROOT_DIR}/src/png
)
find_library_with_debug(PNG_LIBRARIES
WIN32_DEBUG_POSTFIX d
NAMES png libpng wxpng
PATHS /usr/lib /usr/local/lib ${wxWidgets_LIB_DIR}
)
include(FindPackageHandleStandardArgs)
find_package_handle_standard_args(PNG DEFAULT_MSG
PNG_INCLUDE_DIR PNG_LIBRARIES)
SET(PNG_LIBRARIES ${PNG_LIBRARIES} ${ZLIB_LIBRARIES})
MARK_AS_ADVANCED(PNG_INCLUDE_DIR PNG_LIBRARIES )
ENDIF(ZLIB_FOUND)
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