From 58f7dcd5c8040ad423c5016c662cff100c3a5219 Mon Sep 17 00:00:00 2001
From: Tom Hall <tahall256@protonmail.ch>
Date: Thu, 24 Aug 2023 23:12:59 +0100
Subject: [PATCH] valhalla: fix build with gcc 12

---
 pkgs/development/libraries/valhalla/default.nix | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/pkgs/development/libraries/valhalla/default.nix b/pkgs/development/libraries/valhalla/default.nix
index 2d400d73f401..778161622563 100644
--- a/pkgs/development/libraries/valhalla/default.nix
+++ b/pkgs/development/libraries/valhalla/default.nix
@@ -44,6 +44,11 @@ stdenv.mkDerivation (finalAttrs: {
     "-DENABLE_BENCHMARKS=OFF"
   ];
 
+  env.NIX_CFLAGS_COMPILE = toString [
+    # Needed for date submodule with GCC 12 https://github.com/HowardHinnant/date/issues/750
+    "-Wno-error=stringop-overflow"
+  ];
+
   buildInputs = [
     boost
     curl