From a967f5c82afe21ec208d7a0a9dd50a06632388bd Mon Sep 17 00:00:00 2001
From: Max Howell <mxcl@me.com>
Date: Sat, 27 Oct 2012 19:39:53 -0400
Subject: [PATCH] Use cc -E, not cpp -E. Fixes Homebrew/homebrew#15402.

---
 Library/ENV/4.3/cc | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Library/ENV/4.3/cc b/Library/ENV/4.3/cc
index 840ffc94bd..fa620cc09a 100755
--- a/Library/ENV/4.3/cc
+++ b/Library/ENV/4.3/cc
@@ -53,7 +53,7 @@ class Cmd
   def tool
     @tool ||= case @arg0
     when 'ld' then 'ld'
-    when 'cc', 'c99', 'c89'
+    when 'cc', 'c99', 'c89', 'cpp'
       # Ideally we would run `cx9`, however these tools are POSIX compliant
       # and don't support many flags. We need -isystem for instance, but also
       # reliability is generally much higher if we just get clang/gcc to do