From b6e28b59679e3e4ee47b20090035ef33889b3f3b Mon Sep 17 00:00:00 2001
From: topjohnwu <topjohnwu@google.com>
Date: Fri, 24 Jun 2022 14:27:37 -0700
Subject: Allow dynamically linking against libLLVM on macOS

Create symlinks to workaround file missing error in llvm-config
---
 src/bootstrap/lib.rs | 16 ++++++++++------
 1 file changed, 10 insertions(+), 6 deletions(-)

(limited to 'src/bootstrap/lib.rs')

diff --git a/src/bootstrap/lib.rs b/src/bootstrap/lib.rs
index 4ac857b470e..d30f69ffc51 100644
--- a/src/bootstrap/lib.rs
+++ b/src/bootstrap/lib.rs
@@ -107,15 +107,11 @@ use std::cell::{Cell, RefCell};
 use std::collections::{HashMap, HashSet};
 use std::env;
 use std::fs::{self, File};
+use std::io;
 use std::path::{Path, PathBuf};
 use std::process::{self, Command};
 use std::str;
 
-#[cfg(unix)]
-use std::os::unix::fs::symlink as symlink_file;
-#[cfg(windows)]
-use std::os::windows::fs::symlink_file;
-
 use filetime::FileTime;
 use once_cell::sync::OnceCell;
 
@@ -1446,7 +1442,7 @@ impl Build {
                 src = t!(fs::canonicalize(src));
             } else {
                 let link = t!(fs::read_link(src));
-                t!(symlink_file(link, dst));
+                t!(self.symlink_file(link, dst));
                 return;
             }
         }
@@ -1571,6 +1567,14 @@ impl Build {
         iter.map(|e| t!(e)).collect::<Vec<_>>().into_iter()
     }
 
+    fn symlink_file<P: AsRef<Path>, Q: AsRef<Path>>(&self, src: P, link: Q) -> io::Result<()> {
+        #[cfg(unix)]
+        use std::os::unix::fs::symlink as symlink_file;
+        #[cfg(windows)]
+        use std::os::windows::fs::symlink_file;
+        if !self.config.dry_run { symlink_file(src.as_ref(), link.as_ref()) } else { Ok(()) }
+    }
+
     fn remove(&self, f: &Path) {
         if self.config.dry_run {
             return;
-- 
cgit 1.4.1-3-g733a5