diff -ur terminus-font-4.40/configure x/configure
--- terminus-font-4.40/configure	2015-07-29 13:55:18.000000000 -0400
+++ x/configure	2016-04-27 17:23:34.326982346 -0400
@@ -36,15 +36,15 @@
 	for i do
 		if test "$i" != "`echo "$i" | sed -e 1q`" ; then
 			echo "$0: `echo "$i" | sed -e "s/$r/^M/" -e 1q`^J...: contains line feed" 1>&2
-		elif echo "$i" | grep "$r" > /dev/null ; then
+		elif echo "$i" | ggrep "$r" > /dev/null ; then
 			echo "$0: `echo "$i" | sed -e "s/$r.*//"`^M...: contains carriage return" 1>&2
 		elif test -n "$i" ; then
-			if echo "$i" | grep -E "^--$l=|^[A-Z][A-Z0-9_]*[^_]=" > /dev/null ; then
+			if echo "$i" | ggrep -E "^--$l=|^[A-Z][A-Z0-9_]*[^_]=" > /dev/null ; then
 				n=`echo "$i" | sed -e "s$r^-*$r$r" -e "s$r=.*$r$r" | sed -e "s/-/_/g"`
-				if grep -E "^$n$w:?=" Makefile > /dev/null ; then
+				if ggrep -E "^$n$w:?=" Makefile > /dev/null ; then
 					cp -f Makefile Makefile.$$
 					sed -e "s$r^\($n$w:*=$w\).*$r\1`echo "$i" | sed -e "s$r^[^=]*=$r$r"`$r" Makefile.$$ > Makefile
-					grep -E "^$n$w:?=" Makefile /dev/null
+					ggrep -E "^$n$w:?=" Makefile /dev/null
 				else
 					echo "$0: $n: not found in Makefile" 1>&2
 				fi