gperftools: fix darwin build

NixOS · Sep 18, 2017 · 69bf06a · 69bf06a
1 parent 6b7e103
commit 69bf06a
Showing 1 changed file with 2 additions and 0 deletions.
diff --git a/pkgs/development/libraries/gperftools/default.nix b/pkgs/development/libraries/gperftools/default.nix
@@ -16,6 +16,8 @@ stdenv.mkDerivation rec {
     substituteInPlace libtool --replace stdc++ c++
   '';
 
+  NIX_CFLAGS_COMPILE = stdenv.lib.optional stdenv.isDarwin "-D_XOPEN_SOURCE";
+
   # some packages want to link to the static tcmalloc_minimal
   # to drop the runtime dependency on gperftools
   dontDisableStatic = true;