Use -traditional with GNU cpp.

diff --git a/configure.in b/configure.in
index e83b81f1883af9d029ce1b88dfbd36235508ddfb..341711dc648e298e506587d54e44f0b5c35dfb3d 100644 (file)
--- a/configure.in
+++ b/configure.in
@@ -2257,6 +2257,13 @@ changequote([, ])dnl
 echo creating src/epaths.h
 make epaths-force
 
+# As of 2000-11-19, newest development versions of GNU cpp preprocess
+# `..' to `. .'  unless invoked with -traditional
+
+if [ x$GCC = xyes && x$NON_GNU_CPP" = x ]; then
+  CPPFLAGS="$CPPFLAGS -traditional"
+fi
+
 echo creating lib-src/Makefile
 ( cd lib-src
   rm -f junk.c junk1.c junk2.c