From 9ca34c714e9aa4d35bc359c03c5c917c81fdd21c 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 +-
 nix/windows/default.nix | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/nix/llvm/default.nix b/nix/llvm/default.nix
index f33c16ca7..33a0e42e2 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"
diff --git a/nix/windows/default.nix b/nix/windows/default.nix
index b070af3e4..a8de76e98 100644
--- a/nix/windows/default.nix
+++ b/nix/windows/default.nix
@@ -65,7 +65,7 @@ in rec {
       ${silenceFontconfig}
       mkdir build
       cd build
-      wine64 cmake .. -DCMAKE_BUILD_TYPE=Release -DLLVM_ENABLE_UNWIND_TABLES=OFF -DLLVM_ENABLE_THREADS=OFF -DLLVM_TARGETS_TO_BUILD=X86\;ARM\;RISCV -DLLVM_LINK_LLVM_DYLIB=OFF -DLLVM_ENABLE_FFI=OFF -DFFI_INCLUDE_DIR=fck-cmake -DFFI_LIBRARY_DIR=fck-cmake -DLLVM_ENABLE_LIBXML2=OFF -DLLVM_INCLUDE_BENCHMARKS=OFF -DLLVM_ENABLE_PROJECTS=clang -DCMAKE_INSTALL_PREFIX=Z:$out
+      wine64 cmake .. -DCMAKE_BUILD_TYPE=Release -DLLVM_ENABLE_UNWIND_TABLES=OFF -DLLVM_ENABLE_THREADS=ON -DLLVM_TARGETS_TO_BUILD=X86\;ARM\;RISCV -DLLVM_LINK_LLVM_DYLIB=OFF -DLLVM_ENABLE_FFI=OFF -DFFI_INCLUDE_DIR=fck-cmake -DFFI_LIBRARY_DIR=fck-cmake -DLLVM_ENABLE_LIBXML2=OFF -DLLVM_INCLUDE_BENCHMARKS=OFF -DLLVM_ENABLE_PROJECTS=clang -DCMAKE_INSTALL_PREFIX=Z:$out
       '';
     buildPhase =
       ''