diff --git a/Makefile.rules b/Makefile.rules
index 4a69bff3243..d2d0556f9ee 100644
--- a/Makefile.rules
+++ b/Makefile.rules
@@ -216,6 +216,7 @@ endif
 
 # Need a better way to compute this.
 LLVMGCCLibDir := $(dir $(shell $(LLVMGCC) -print-file-name=libgcc.a))/
+LLVMGCCStdCXXLibDir := $(dir $(shell $(LLVMGCC) -print-file-name=libstdc++.a))/
 
 #--------------------------------------------------------------------
 # Adjust to user's request