From 866d13a444d0d909e106fa64d9426c5ec78e0688 Mon Sep 17 00:00:00 2001
From: Alex Crichton <alex@alexcrichton.com>
Date: Fri, 9 Feb 2018 08:08:12 -0800
Subject: [PATCH] Don't cross-compile Emscripten's LLVM

Eventually the LLVM version of Emscripten and the main LLVM will diverge, and we
can't cross-compile an older version of LLVM using a newer version of LLVM's
`llvm-config`.
---
 src/bootstrap/native.rs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/bootstrap/native.rs b/src/bootstrap/native.rs
index 3f30756a568ce..6d669584d2d56 100644
--- a/src/bootstrap/native.rs
+++ b/src/bootstrap/native.rs
@@ -186,7 +186,7 @@ impl Step for Llvm {
         }
 
         // http://llvm.org/docs/HowToCrossCompileLLVM.html
-        if target != build.build {
+        if target != build.build && !self.emscripten {
             builder.ensure(Llvm {
                 target: build.build,
                 emscripten: false,