PNG_WRITE_SWAP_SUPPORTED 1672 extra_lib/include/png/png.h #if defined(PNG_READ_SWAP_SUPPORTED) || defined(PNG_WRITE_SWAP_SUPPORTED) PNG_WRITE_SWAP_SUPPORTED 3304 extra_lib/include/png/png.h #if defined(PNG_READ_SWAP_SUPPORTED) || defined(PNG_WRITE_SWAP_SUPPORTED)