From 6a76633bb6e2fd49fbe264a55b39ce0a5166605f Mon Sep 17 00:00:00 2001
From: Matthew Maurer <maurer@matthewmaurer.org>
Date: Thu, 11 Jun 2015 00:45:24 +0200
Subject: [PATCH] llvm-3.4: enable RTTI (close #8289)

---
 pkgs/development/compilers/llvm/3.4/llvm.nix | 1 +
 1 file changed, 1 insertion(+)

diff --git a/pkgs/development/compilers/llvm/3.4/llvm.nix b/pkgs/development/compilers/llvm/3.4/llvm.nix
index d3beb2e7461c..a44f157a13e5 100644
--- a/pkgs/development/compilers/llvm/3.4/llvm.nix
+++ b/pkgs/development/compilers/llvm/3.4/llvm.nix
@@ -44,6 +44,7 @@ in stdenv.mkDerivation rec {
     "-DCMAKE_BUILD_TYPE=Release"
     "-DLLVM_BUILD_TESTS=ON"
     "-DLLVM_ENABLE_FFI=ON"
+    "-DLLVM_REQUIRES_RTTI=1"
     "-DLLVM_BINUTILS_INCDIR=${binutils}/include"
     "-DCMAKE_CXX_FLAGS=-std=c++11"
   ] ++ stdenv.lib.optional (!isDarwin) "-DBUILD_SHARED_LIBS=ON";