PNG_LIBPNG_BUILD_BASE_TYPE  481 3rdparty/libpng/png.h        (PNG_LIBPNG_BUILD_BASE_TYPE | PNG_LIBPNG_BUILD_PRIVATE)
PNG_LIBPNG_BUILD_BASE_TYPE  485 3rdparty/libpng/png.h          (PNG_LIBPNG_BUILD_BASE_TYPE | PNG_LIBPNG_BUILD_SPECIAL)
PNG_LIBPNG_BUILD_BASE_TYPE  487 3rdparty/libpng/png.h #    define PNG_LIBPNG_BUILD_TYPE (PNG_LIBPNG_BUILD_BASE_TYPE)