From f4828eac53ce612b95960ed1a4f579671f15eb94 Mon Sep 17 00:00:00 2001
From: "Richard M. Stallman" <rms@gnu.org>
Date: Tue, 10 May 1994 20:11:32 +0000
Subject: [PATCH] (using NON_GNU_CPP): Fix test for CPP already set.

---
 configure1.in | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/configure1.in b/configure1.in
index 0e59358a6d5..90c21084b4f 100755
--- a/configure1.in
+++ b/configure1.in
@@ -1109,7 +1109,7 @@ esac
 #### Some systems specify a CPP to use unless we are using GCC.
 #### Now that we know whether we are using GCC, we can decide whether
 #### to use that one.
-if [ "x$NON_GNU_CPP" = x ] || [ x$GCC = x1 ] || [ "x$CPP" = x ]
+if [ "x$NON_GNU_CPP" = x ] || [ x$GCC = x1 ] || [ "x$CPP" != x ]
 then true
 else
   CPP="$NON_GNU_CPP"
-- 
2.39.5