diff --git a/runtime/Makefile b/runtime/Makefile
index 201768af1f0..30d96a755c9 100644
--- a/runtime/Makefile
+++ b/runtime/Makefile
@@ -9,7 +9,17 @@
 # llvm/runtime Makefile:  Build all subdirectories automatically
 
 LEVEL = ..
+include $(LEVEL)/Makefile.config
+ifneq ($(wildcard $(LLVMGCCDIR)),)
 PARALLEL_DIRS  := $(sort $(filter-out Output/, $(filter-out CVS/, $(wildcard */))))
+else
+PARALLEL_DIRS  := 
+all ::
+	@echo '********' Warning: Your LLVMGCCDIR is set incorrectly.  Double-check 
+	@echo '********' Warning: llvm/Makefile.config to make sure it matches
+	@echo '********' Warning: the directory where the C front-end is installed,
+	@echo '********' Warning: and re-run configure if it does not.
+endif
 
 include $(LEVEL)/Makefile.common