syntax.c: In function ‘Prim_scan_sexps_forward’: syntax.c:1074:15: error: ‘level_start.last’ may be used uninitialized in this function [-Werror=maybe-uninitialized] 1074 | (((level -> last) == NULL) | ^~ syntax.c:1036:33: error: ‘level_start.last’ may be used uninitialized in this function [-Werror=maybe-uninitialized] 1036 | (level -> previous) = (level -> last); | ~~~~~~~^~~~~~~~ cc1: all warnings being treated as errors make[1]: *** [Makefile:182: syntax.o] Error 1 make[1]: Leaving directory '/home/cewijk/Downloads/mit-scheme-11.0.90/src/microcode' make: *** [Makefile:796: microcode/scheme] Error 2 [root@linux src]# make install