From 5d840c0e39ec4bad8cc2d820efc3ed767155f7a8 Mon Sep 17 00:00:00 2001
From: Xiyue Deng
Date: Tue, 13 Aug 2013 13:14:24 -0700
Subject: Boost: enforce '--with-mpi' with '--without-single'

* Building MPI support for both single and multi-threaded flavors will
  result in duplicated rules for mpi.so.  Upstream bug report
  https://svn.boost.org/trac/boost/ticket/8841.
* Require '--with-mpi' be used together with '--without-single' until
  this is fixed.
---
 Library/Formula/boost.rb | 10 ++++++++++
 1 file changed, 10 insertions(+)

(limited to 'Library/Formula')

diff --git a/Library/Formula/boost.rb b/Library/Formula/boost.rb
index f4fa0998f..13f8c6c0f 100644
--- a/Library/Formula/boost.rb
+++ b/Library/Formula/boost.rb
@@ -61,6 +61,16 @@ class Boost < Formula
   end
 
   def install
+    # https://svn.boost.org/trac/boost/ticket/8841
+    if build.with? 'mpi' and !build.without? 'single'
+      onoe <<-EOS.undent
+        Building MPI support for both single and multi-threaded flavors
+        is not supported.  Please use '--with-mpi' together with
+        '--disable-single'.
+      EOS
+      exit -1
+    end
+
     # Adjust the name the libs are installed under to include the path to the
     # Homebrew lib directory so executables will work when installed to a
     # non-/usr/local location.
-- 
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