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-rw-r--r--pkgs/development/libraries/bullet/default.nix2
-rw-r--r--pkgs/development/libraries/clucene-core/2.x.nix2
2 files changed, 2 insertions, 2 deletions
diff --git a/pkgs/development/libraries/bullet/default.nix b/pkgs/development/libraries/bullet/default.nix
index 585e2416b993..b4a2133f7d8f 100644
--- a/pkgs/development/libraries/bullet/default.nix
+++ b/pkgs/development/libraries/bullet/default.nix
@@ -40,7 +40,7 @@ stdenv.mkDerivation rec {
 
   enableParallelBuilding = true;
 
-  NIX_CFLAGS_COMPILE = "-Wno-error=argument-outside-range";
+  NIX_CFLAGS_COMPILE = stdenv.lib.optionalString stdenv.cc.isClang "-Wno-error=argument-outside-range";
 
   meta = with stdenv.lib; {
     description = "A professional free 3D Game Multiphysics Library";
diff --git a/pkgs/development/libraries/clucene-core/2.x.nix b/pkgs/development/libraries/clucene-core/2.x.nix
index 03276ce9efd2..91347813a24f 100644
--- a/pkgs/development/libraries/clucene-core/2.x.nix
+++ b/pkgs/development/libraries/clucene-core/2.x.nix
@@ -36,7 +36,7 @@ stdenv.mkDerivation rec {
   # /build/clucene-core-2.3.3.4/build/bin/cl_test"
   doCheck = false;
 
-  NIX_CFLAGS_COMPILE = "-Wno-error=c++11-narrowing";
+  NIX_CFLAGS_COMPILE = stdenv.lib.optionalString stdenv.cc.isClang "-Wno-error=c++11-narrowing";
 
   meta = with stdenv.lib; {
     description = "Core library for full-featured text search engine";