OS_CODE 590 lib/zlib/deflate.c put_byte(s, OS_CODE); OS_CODE 188 lib/zlib/gzio.c Z_DEFLATED, 0 /*flags*/, 0,0,0,0 /*time*/, 0 /*xflags*/, OS_CODE); OS_CODE 168 lib/zlib/zutil.h #ifndef OS_CODE