From f586b0f9473135d64fb34ba271eb7e7ad05cc661 Mon Sep 17 00:00:00 2001
From: "Brian J. Burg" <burg@cs.washington.edu>
Date: Fri, 19 Oct 2012 17:41:10 -0700
Subject: [PATCH] Cause configure script failure if no rustc found. Closes
 #127.

---
 configure | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/configure b/configure
index 16a54116295..db2d528522c 100755
--- a/configure
+++ b/configure
@@ -278,7 +278,7 @@ then
 	CFG_RUSTC = ${CFG_LOCAL_RUST_ROOT}/bin/rustc
     fi
 else
-    probe CFG_RUSTC rustc
+    probe_need CFG_RUSTC rustc
 fi
 
 if [ ! -z "$CFG_ENABLE_CLANG" ]