From 1bfc5cebcccfb3ca018cb0ac5fc1ca15fa4536e7 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Kornel=20Lesin=CC=81ski?= <kornel@geekhood.net>
Date: Wed, 8 Jul 2020 20:51:34 +0100
Subject: [PATCH] Don't fail clone if there's already a directory

---
 sys/build.rs | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/sys/build.rs b/sys/build.rs
index 8e92c2a..e687c2c 100644
--- a/sys/build.rs
+++ b/sys/build.rs
@@ -117,13 +117,16 @@ fn search() -> PathBuf {
 }
 
 fn fetch() -> io::Result<()> {
+    let output_base_path = output();
+    let clone_dest_dir = format!("ffmpeg-{}", version());
+    let _ = std::fs::remove_dir_all(output_base_path.join(&clone_dest_dir));
     let status = Command::new("git")
-            .current_dir(&output())
+            .current_dir(&output_base_path)
             .arg("clone")
             .arg("-b")
             .arg(format!("release/{}", version()))
             .arg("https://github.com/FFmpeg/FFmpeg")
-            .arg(format!("ffmpeg-{}", version()))
+            .arg(&clone_dest_dir)
             .status()?;
 
     if status.success() {