--- gforth/BUILD-FROM-SCRATCH	2001/08/08 14:44:20	1.8
+++ gforth/BUILD-FROM-SCRATCH	2002/03/01 13:25:25	1.9
@@ -33,6 +33,10 @@
 if [ "$GFORTH"xx = "xx" ];
 then
 	GFORTH=`which gforth`
+	if [ "$GFORTH"xx = "xx" ]; then
+		echo 'BUILD-FROM-SCRATCH needs a working gforth (in environment variable GFORTH)'
+                exit 1
+        fi
 fi
 
 # makes a aclocal.m4 which includes the automake macros for autconf