From 6a03c05ffe44b3f21e3c6ab0797a997021caef12 Mon Sep 17 00:00:00 2001
From: sternenseemann <sternenseemann@systemli.org>
Date: Wed, 5 Jul 2023 20:25:48 +0200
Subject: [PATCH] llvmPackages_16.libcxxabi: also convince CMake C compiler is
 working

For some reason, this is required now.
---
 pkgs/development/compilers/llvm/16/libcxxabi/default.nix | 1 +
 1 file changed, 1 insertion(+)

diff --git a/pkgs/development/compilers/llvm/16/libcxxabi/default.nix b/pkgs/development/compilers/llvm/16/libcxxabi/default.nix
index b90698c6b9a5d..cbaf69a1897fb 100644
--- a/pkgs/development/compilers/llvm/16/libcxxabi/default.nix
+++ b/pkgs/development/compilers/llvm/16/libcxxabi/default.nix
@@ -65,6 +65,7 @@ stdenv.mkDerivation rec {
     # CMake however checks for this anyways; this flag tells it not to. See:
     # https://github.com/llvm/llvm-project/blob/4bd3f3759259548e159aeba5c76efb9a0864e6fa/llvm/runtimes/CMakeLists.txt#L243
     "-DCMAKE_CXX_COMPILER_WORKS=ON"
+    "-DCMAKE_C_COMPILER_WORKS=ON"
   ] ++ lib.optionals (stdenv.hostPlatform.useLLVM or false) [
     "-DLLVM_ENABLE_LIBCXX=ON"
     "-DLIBCXXABI_USE_LLVM_UNWINDER=ON"