From 2110638bfe711ee9bf14093a5e40d8112e8ce198 Mon Sep 17 00:00:00 2001
From: David Mak <csdavidmak@ust.hk>
Date: Fri, 13 Oct 2023 11:33:00 +0800
Subject: [PATCH] flake: Enable thread-safe mode for LLVM

This is required as we use the LLVM APIs from multiple threads.
---
 nix/llvm/default.nix | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/nix/llvm/default.nix b/nix/llvm/default.nix
index f33c16c..33a0e42 100644
--- a/nix/llvm/default.nix
+++ b/nix/llvm/default.nix
@@ -112,7 +112,7 @@ in stdenv.mkDerivation (rec {
     "-DLLVM_HOST_TRIPLE=${stdenv.hostPlatform.config}"
     "-DLLVM_DEFAULT_TARGET_TRIPLE=${stdenv.hostPlatform.config}"
     "-DLLVM_ENABLE_UNWIND_TABLES=OFF"
-    "-DLLVM_ENABLE_THREADS=OFF"
+    "-DLLVM_ENABLE_THREADS=ON"
     "-DLLVM_INCLUDE_BENCHMARKS=OFF"
     "-DLLVM_BUILD_TOOLS=OFF"
     "-DLLVM_TARGETS_TO_BUILD=X86;ARM;RISCV"