PNG_READ_zTXt_SUPPORTED 3482 extra_lib/include/png/png.h #if defined(PNG_READ_zTXt_SUPPORTED)
PNG_READ_zTXt_SUPPORTED 3533 extra_lib/include/png/png.h #if defined(PNG_READ_zTXt_SUPPORTED)
PNG_READ_zTXt_SUPPORTED  952 extra_lib/include/png/pngconf.h     defined(PNG_READ_zTXt_SUPPORTED)