From d68f7eb865b1b1be5393b440d9122d4f7c4497c2 Mon Sep 17 00:00:00 2001
From: Alex Crichton <alex@alexcrichton.com>
Date: Tue, 13 Sep 2016 12:30:17 -0700
Subject: [PATCH] rustbuild: Use current_dir instead of -C

Apparently some versions of git don't support the `-C` flag, so let's use the
guaranteed-to-work `current_dir` function.
---
 src/bootstrap/lib.rs | 16 ++++++++++++----
 1 file changed, 12 insertions(+), 4 deletions(-)

diff --git a/src/bootstrap/lib.rs b/src/bootstrap/lib.rs
index 94c14f7ea2546..13eb0299e35f4 100644
--- a/src/bootstrap/lib.rs
+++ b/src/bootstrap/lib.rs
@@ -556,12 +556,18 @@ impl Build {
                 continue
             }
 
+            if !submodule.path.exists() {
+                t!(fs::create_dir_all(&submodule.path));
+            }
+
             match submodule.state {
                 State::MaybeDirty => {
                     // drop staged changes
-                    self.run(git().arg("-C").arg(submodule.path).args(&["reset", "--hard"]));
+                    self.run(git().current_dir(submodule.path)
+                                  .args(&["reset", "--hard"]));
                     // drops unstaged changes
-                    self.run(git().arg("-C").arg(submodule.path).args(&["clean", "-fdx"]));
+                    self.run(git().current_dir(submodule.path)
+                                  .args(&["clean", "-fdx"]));
                 },
                 State::NotInitialized => {
                     self.run(git_submodule().arg("init").arg(submodule.path));
@@ -570,8 +576,10 @@ impl Build {
                 State::OutOfSync => {
                     // drops submodule commits that weren't reported to the (outer) git repository
                     self.run(git_submodule().arg("update").arg(submodule.path));
-                    self.run(git().arg("-C").arg(submodule.path).args(&["reset", "--hard"]));
-                    self.run(git().arg("-C").arg(submodule.path).args(&["clean", "-fdx"]));
+                    self.run(git().current_dir(submodule.path)
+                                  .args(&["reset", "--hard"]));
+                    self.run(git().current_dir(submodule.path)
+                                  .args(&["clean", "-fdx"]));
                 },
             }
         }