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.

/*
 * Copy string s2 to s1.  s1 must be large enough.
 * return s1
 */

char *
strcpy(s1, s2)
	register char *s1, *s2;
{
	register char *os1;

	os1 = s1;
	while (*s1++ = *s2++)
		;
	return(os1);
}