From 5dbc650a60ddb230f59e5a18ffd298b033566945 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Johannes=20L=C3=B6thberg?= <johannes@kyriasis.com>
Date: Thu, 20 Jul 2017 23:07:01 +0200
Subject: [PATCH] librustc_llvm/build: Force link against libffi
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`llvm-config --libs` doesn't output libffi in many cases.  Fixing it
turned out to take quite a bit of effort, so force libffi linking in
here for now.

Signed-off-by: Johannes Löthberg <johannes@kyriasis.com>
---
 src/librustc_llvm/build.rs | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/librustc_llvm/build.rs b/src/librustc_llvm/build.rs
index 3f0f536960..7dc0c40c9d 100644
--- a/src/librustc_llvm/build.rs
+++ b/src/librustc_llvm/build.rs
@@ -220,6 +220,7 @@ fn main() {
         };
         println!("cargo:rustc-link-lib={}={}", kind, name);
     }
+    println!("cargo:rustc-link-lib=dylib=ffi");
 
     // LLVM ldflags
     //
-- 
2.13.3