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.

/*
 * Compare strings (at most n bytes):  s1>s2: >0  s1==s2: 0  s1<s2: <0
 */

strncmp(s1, s2, n)
	register char *s1, *s2;
	register n;
{
	while (--n >= 0 && *s1 == *s2++)
		if (*s1++ == '\0')
			return(0);
	return(n<0 ? 0 : *s1 - *--s2);
}