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diff --git a/deps/llvm.mk b/deps/llvm.mk
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index c516b577f6..3ebb5024da 100644
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--- a/deps/llvm.mk
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+++ b/deps/llvm.mk
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@@ -72,6 +72,7 @@ LLVM_CMAKE += -DPOLLY_ENABLE_GPGPU_CODEGEN=ON
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 endif
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 LLVM_CMAKE += -DLLVM_TOOLS_INSTALL_DIR=$(shell $(JULIAHOME)/contrib/relative_path.sh $(build_prefix) $(build_depsbindir))
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 LLVM_CMAKE += -DLLVM_UTILS_INSTALL_DIR=$(shell $(JULIAHOME)/contrib/relative_path.sh $(build_prefix) $(build_depsbindir))
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+LLVM_CMAKE += -DLLVM_LIBDIR_SUFFIX=64
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 LLVM_CMAKE += -DLLVM_INCLUDE_UTILS=ON -DLLVM_INSTALL_UTILS=ON
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 LLVM_CMAKE += -DLLVM_BINDINGS_LIST="" -DLLVM_INCLUDE_DOCS=Off -DLLVM_ENABLE_TERMINFO=Off -DHAVE_HISTEDIT_H=Off -DHAVE_LIBEDIT=Off
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 ifeq ($(LLVM_ASSERTIONS), 1)