| # - 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 2002-2009 Kitware, Inc. |
| # |
| # Distributed under the OSI-approved BSD License (the "License"); |
| # see accompanying file Copyright.txt for details. |
| # |
| # This software is distributed WITHOUT ANY WARRANTY; without even the |
| # implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. |
| # See the License for more information. |
| #============================================================================= |
| # (To distributed this file outside of CMake, substitute the full |
| # License text for the above reference.) |
| |
| if(PNG_FIND_QUIETLY) |
| set(_FIND_ZLIB_ARG QUIET) |
| endif(PNG_FIND_QUIETLY) |
| find_package(ZLIB ${_FIND_ZLIB_ARG}) |
| |
| if(ZLIB_FOUND) |
| find_path(PNG_PNG_INCLUDE_DIR png.h |
| /usr/local/include/libpng # OpenBSD |
| ) |
| |
| set(PNG_NAMES ${PNG_NAMES} png libpng png12 libpng12) |
| 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 ) |