1 diff --git a/Makefile b/Makefile
2 index 452b0171..4451adf4 100644
5 @@ -246,7 +246,7 @@ $(LLVM_BUILDDIR)/build.ninja:
8 $(LLVM_BUILDDIR): $(LLVM_BUILDDIR)/build.ninja
9 - cd $(LLVM_BUILDDIR) && ninja $(NINJA_BUILD_TARGETS)
10 + cd $(LLVM_BUILDDIR) && ninja $(NINJA_BUILD_TARGETS) -j1
12 ifneq ($(USE_SYSTEM_BINARYEN),1)