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-rw-r--r--pkgs/development/compilers/llvm/11/llvm/default.nix1
1 files changed, 1 insertions, 0 deletions
diff --git a/pkgs/development/compilers/llvm/11/llvm/default.nix b/pkgs/development/compilers/llvm/11/llvm/default.nix
index a038795a4df..214d6b05caf 100644
--- a/pkgs/development/compilers/llvm/11/llvm/default.nix
+++ b/pkgs/development/compilers/llvm/11/llvm/default.nix
@@ -181,6 +181,7 @@ in stdenv.mkDerivation (rec {
     "-DLLVM_HOST_TRIPLE=${stdenv.hostPlatform.config}"
     "-DLLVM_DEFAULT_TARGET_TRIPLE=${stdenv.hostPlatform.config}"
     "-DLLVM_ENABLE_DUMP=ON"
+    "-DLLVM_LIT_ARGS=-svj\${NIX_BUILD_CORES}"
   ] ++ optionals stdenv.hostPlatform.isStatic [
     # Disables building of shared libs, -fPIC is still injected by cc-wrapper
     "-DLLVM_ENABLE_PIC=OFF"