-execute_process(COMMAND ${LLVM_CONFIG} --cxxflags OUTPUT_VARIABLE LLVM_CFLAGS OUTPUT_STRIP_TRAILING_WHITESPACE)
-execute_process(COMMAND ${LLVM_CONFIG} --ldflags OUTPUT_VARIABLE LLVM_LDFLAGS OUTPUT_STRIP_TRAILING_WHITESPACE)
-execute_process(COMMAND ${LLVM_CONFIG} --libs OUTPUT_VARIABLE LLVM_LIBS OUTPUT_STRIP_TRAILING_WHITESPACE)
+execute_process(COMMAND ${LLVM_CONFIG} --cxxflags OUTPUT_VARIABLE LLVM_CFLAGS OUTPUT_STRIP_TRAILING_WHITESPACE)
+execute_process(COMMAND ${LLVM_CONFIG} --ldflags OUTPUT_VARIABLE LLVM_LDFLAGS OUTPUT_STRIP_TRAILING_WHITESPACE)
+execute_process(COMMAND ${LLVM_CONFIG} --libs OUTPUT_VARIABLE LLVM_LIBS OUTPUT_STRIP_TRAILING_WHITESPACE)
+execute_process(COMMAND ${LLVM_CONFIG} --system-libs OUTPUT_VARIABLE LLVM_SYSTEM_LIBS OUTPUT_STRIP_TRAILING_WHITESPACE)