PNG_WRITE_sPLT_SUPPORTED 3140 extra_lib/include/png/png.h #if defined(PNG_WRITE_sPLT_SUPPORTED)
PNG_WRITE_sPLT_SUPPORTED 3161 extra_lib/include/png/png.h     defined(PNG_WRITE_iCCP_SUPPORTED) || defined(PNG_WRITE_sPLT_SUPPORTED)