===================================================================
RCS file: /cvs/mandoc/configure,v
retrieving revision 1.40
retrieving revision 1.41
diff -u -p -r1.40 -r1.41
--- mandoc/configure	2016/07/12 05:18:38	1.40
+++ mandoc/configure	2016/07/15 15:08:37	1.41
@@ -34,7 +34,7 @@ echo "config.log: writing..."
 MANPATH_DEFAULT="/usr/share/man:/usr/X11R6/man:/usr/local/man"
 OSNAME=
 
-CC=`printf "all:\\n\\t@echo \\\$(CC)\\n" | make -f -`
+CC=`printf "all:\\n\\t@echo \\\$(CC)\\n" | env -i make -f -`
 CFLAGS="-g -W -Wall -Wstrict-prototypes -Wno-unused-parameter -Wwrite-strings"
 LDADD=
 LDFLAGS=