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.

/*
 * External function definitions
 * for routines described in string(3).
 */
char	*strcat();
char	*strncat();
int	strcmp();
int	strncmp();
int	strcasecmp();
int	strncasecmp();
char	*strcpy();
char	*strncpy();
int	strlen();
char	*index();
char	*rindex();