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.

#include <stdarg.h>

extern void _sprintf_putchar();

int
vsprintf(str, fmt, ap)
	va_list ap;
	char *str, *fmt;
{
	char *strptr;
	int len;

	strptr = str;
	len = _doprnt(fmt, ap, &_sprintf_putchar, &strptr);
	*strptr = '\0';
	return(len);
}