Makefile hierarchy: CFLAGS override-ability actually works now The original version was broken in that CFLAGS=${CFLAGS} passing was done without quotes, which breaks as soon as there is a space in the user-set CFLAGS. Changing it to CFLAGS="${CFLAGS}" makes it work as originally intended.

char *
rindex(p, ch)
	register char *p, ch;
{
	register char *save;

	for (save = 0;; ++p) {
		if (*p == ch)
			save = p;
		if (!*p)
			return(save);
	}
	/* NOTREACHED */
}