From 74965741696bf79fd67501a55b1b60683c2b5d62 Mon Sep 17 00:00:00 2001
From: Claudio Bley <claudio.bley@gmail.com>
Date: Mon, 28 Nov 2022 08:51:36 +0100
Subject: [PATCH] llvmPackages_14: Use GCC 11 on aarch64-linux

The libcxx library needs a C++20 capable compiler toolchain since version 14, but aarch64-linux uses GCC 9 by default.

However, building libcxxabi fails when using GCC 10, see [llvm/llvm-project#56828]. So let's use GCC 11 instead.

[llvm/llvm-project#56828]: https://github.com/llvm/llvm-project/issues/56828
---
 pkgs/top-level/all-packages.nix | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index f275f8e29348..8f73b34237c8 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -14763,6 +14763,8 @@ with pkgs;
     buildLlvmTools = buildPackages.llvmPackages_14.tools;
     targetLlvmLibraries = targetPackages.llvmPackages_14.libraries or llvmPackages_14.libraries;
     targetLlvm = targetPackages.llvmPackages_14.llvm or llvmPackages_14.llvm;
+  } // lib.optionalAttrs (stdenv.hostPlatform.isAarch64 && stdenv.hostPlatform.isLinux && buildPackages.stdenv.cc.isGNU) {
+    stdenv = gcc11Stdenv;
   }));
 
   llvmPackages_latest = llvmPackages_14;