From 1a05ddc52d9cd63d1550ed62d60ebc9bd8931a74 Mon Sep 17 00:00:00 2001
From: Jack Nagel
Date: Thu, 28 Aug 2014 15:25:58 -0500
Subject: gcc: add caveats about broken openmp multilib

Closes #29670.
---
 Library/Formula/gcc.rb | 10 ++++++++++
 1 file changed, 10 insertions(+)

(limited to 'Library/Formula')

diff --git a/Library/Formula/gcc.rb b/Library/Formula/gcc.rb
index 7bb827261..d2568d0ac 100644
--- a/Library/Formula/gcc.rb
+++ b/Library/Formula/gcc.rb
@@ -181,6 +181,16 @@ class Gcc < Formula
     File.rename file, "#{dir}/#{base}-#{suffix}#{ext}"
   end
 
+  def caveats
+    if build.with?("multilib") then <<-EOS.undent
+      GCC has been built with multilib support. Notably, OpenMP may not work:
+        https://gcc.gnu.org/bugzilla/show_bug.cgi?id=60670
+      If you need OpenMP support you may want to
+        brew reinstall gcc --without-multilib
+      EOS
+    end
+  end
+
   test do
     if build.with?("fortran") || build.with?("all-languages")
       fixture = <<-EOS.undent
-- 
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