diff --git a/Makefile.in b/Makefile.in
index 6a3731d8825..295e44c47f2 100644
--- a/Makefile.in
+++ b/Makefile.in
@@ -49,6 +49,8 @@ endif
 
 export CFG_RUSTC
 export CFG_RUSTC_FLAGS
+export RUSTC=$(CFG_RUSTC)
+export RUSTFLAGS=$(CFG_RUSTC_FLAGS)
 
 ######################################################################
 # Re-configuration
diff --git a/src/rust-core-foundation b/src/rust-core-foundation
index 9733c605bd1..1104c300973 160000
--- a/src/rust-core-foundation
+++ b/src/rust-core-foundation
@@ -1 +1 @@
-Subproject commit 9733c605bd11dbd2ebbcd45e4629c157bb8cc01d
+Subproject commit 1104c30097301728beb81694296ebd28a4d08a48