1 files changed, 1 insertions, 3 deletions
diff --git a/nixpkgs/pkgs/development/compilers/llvm/6/clang/default.nix b/nixpkgs/pkgs/development/compilers/llvm/6/clang/default.nix
index e2f7166354a..8f6479fe2f4 100644
--- a/nixpkgs/pkgs/development/compilers/llvm/6/clang/default.nix
+++ b/nixpkgs/pkgs/development/compilers/llvm/6/clang/default.nix
@@ -4,7 +4,6 @@
 }:
 
 let
-  gcc = if stdenv.cc.isGNU then stdenv.cc.cc else stdenv.cc.cc.gcc;
   self = stdenv.mkDerivation ({
     pname = "clang";
     inherit version;
@@ -27,6 +26,7 @@ let
 
     cmakeFlags = [
       "-DCMAKE_CXX_FLAGS=-std=c++11"
+      "-DLLVM_ENABLE_RTTI=ON"
     ] ++ stdenv.lib.optionals enableManpages [
       "-DCLANG_INCLUDE_DOCS=ON"
       "-DLLVM_ENABLE_SPHINX=ON"
@@ -77,8 +77,6 @@ let
     passthru = {
       isClang = true;
       inherit llvm;
-    } // stdenv.lib.optionalAttrs stdenv.targetPlatform.isLinux {
-      inherit gcc;
     };
 
     meta = {