diff --git a/Makefile.in b/Makefile.in
index d9cef59d41bc..9bb39a6777be 100644
--- a/Makefile.in
+++ b/Makefile.in
@@ -155,6 +155,7 @@ SREQ2 := stage2/rustc$(X) $(LREQ) stage3/glue.o stage3/$(CFG_STDLIB)
 
 export CFG_SRC_DIR
 export CFG_VERSION
+export CFG_LLVM_ROOT
 
 ######################################################################
 # Subprograms
diff --git a/configure b/configure
index 00827e6238d0..ad56f1122718 100755
--- a/configure
+++ b/configure
@@ -269,6 +269,7 @@ case $CFG_LLVM_VERSION in
     ;;
 esac
 
+putvar CFG_LLVM_ROOT
 putvar CFG_LLVM_INCDIR
 putvar CFG_LLVM_BINDIR
 putvar CFG_LLVM_LIBDIR