From 319c61c893f896279d3ad2e8ef26d0026909b191 Mon Sep 17 00:00:00 2001
From: Daiderd Jordan <daiderd@gmail.com>
Date: Sun, 25 Mar 2018 14:39:31 +0200
Subject: [PATCH] ragel: fix clang build

/cc ZHF #36454
---
 pkgs/development/tools/parsing/ragel/default.nix | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/pkgs/development/tools/parsing/ragel/default.nix b/pkgs/development/tools/parsing/ragel/default.nix
index 66895fb7fd3ed..6b497e456300c 100644
--- a/pkgs/development/tools/parsing/ragel/default.nix
+++ b/pkgs/development/tools/parsing/ragel/default.nix
@@ -20,7 +20,7 @@ let
 
       configureFlags = [ "--with-colm=${colm}" ];
 
-      NIX_CFLAGS_COMPILE = "-std=gnu++98";
+      NIX_CFLAGS_COMPILE = stdenv.lib.optional stdenv.cc.isGNU "-std=gnu++98";
 
       doCheck = true;