0009-Relocate-unset-tmp.patch

diff --git a/compiler/rustc_codegen_ssa/src/back/link.rs b/compiler/rustc_codegen_ssa/src/back/link.rs
index dd9d277fb..160e472cf 100644
--- a/compiler/rustc_codegen_ssa/src/back/link.rs
+++ b/compiler/rustc_codegen_ssa/src/back/link.rs
@@ -48,7 +48,7 @@ use std::ffi::OsString;
 use std::fs::{read, File, OpenOptions};
 use std::io::{BufWriter, Write};
 use std::ops::Deref;
-use std::path::{Path, PathBuf};
+use std::path::{MAIN_SEPARATOR, Path, PathBuf};
 use std::process::{ExitStatus, Output, Stdio};
 use std::{env, fmt, fs, io, mem, str};
 
@@ -95,11 +95,24 @@ pub fn link_binary<'a>(
         });
 
         if outputs.outputs.should_link() {
+            let mut clear_tmp = false;
+            if env::var_os("TMPDIR").is_none() && env::var_os("HOME").is_some() {
+                let home_tmp = env::var_os("HOME").unwrap();
+                let home_tmp = format!("{}{}{}", home_tmp.to_string_lossy(), MAIN_SEPARATOR, ".tmp");
+                env::set_var("TMPDIR", &home_tmp);
+                if !Path::new(&home_tmp).exists() {
+                    let _ = fs::create_dir_all(home_tmp);
+                }
+                clear_tmp = true;
+            }
             let tmpdir = TempFileBuilder::new()
                 .prefix("rustc")
                 .tempdir()
                 .unwrap_or_else(|error| sess.emit_fatal(errors::CreateTempDir { error }));
             let path = MaybeTempDir::new(tmpdir, sess.opts.cg.save_temps);
+            if clear_tmp {
+                env::remove_var("TMP");
+            }
             let output = out_filename(
                 sess,
                 crate_type,