From c705239a5de14642f50f7755dd91b38e0ffcf3cd Mon Sep 17 00:00:00 2001
From: Martin Weinelt <hexa@darmstadt.ccc.de>
Date: Sun, 17 Apr 2022 02:57:03 +0200
Subject: [PATCH] cjdns: don't set -Wno-error=stringop-overread with gcc<11

The build would error out on aarch64-linux with

> cc1: error: '-Werror=stringop-overread': no option -Wstringop-overread
---
 pkgs/tools/networking/cjdns/default.nix | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/pkgs/tools/networking/cjdns/default.nix b/pkgs/tools/networking/cjdns/default.nix
index 5fa39f6281b..e8dc5e370be 100644
--- a/pkgs/tools/networking/cjdns/default.nix
+++ b/pkgs/tools/networking/cjdns/default.nix
@@ -19,8 +19,9 @@ stdenv.mkDerivation rec {
     "-O2"
     "-Wno-error=array-bounds"
     "-Wno-error=stringop-overflow"
-    "-Wno-error=stringop-overread"
     "-Wno-error=stringop-truncation"
+  ] ++ lib.optionals (stdenv.cc.isGNU && lib.versionAtLeast stdenv.cc.version "11") [
+    "-Wno-error=stringop-overread"
   ];
 
   buildPhase =