Unbreak building Emacs on FreeBSD

* lisp/emacs-lisp/bytecomp.el (byte-compile-file): Don't create
the temporary file under temporary-file-directory if the file
being compiled is specified by an absolute file name.  This avoids
problems with ACL copying from temporary-file-directory on
FreeBSD.  For the details, see
http://lists.gnu.org/archive/html/emacs-devel/2018-01/msg00513.html.

1 files changed, 11 insertions, 1 deletions

diff --git a/lisp/emacs-lisp/bytecomp.el b/lisp/emacs-lisp/bytecomp.el
index acba9e2df5e..3c9c62eb23d 100644
--- a/lisp/emacs-lisp/bytecomp.el
+++ b/lisp/emacs-lisp/bytecomp.el
@@ -1933,7 +1933,17 @@ The value is non-nil if there were no errors, nil if errors."
                        ;; parallel bootstrap), it does not risk getting a
                        ;; half-finished file.  (Bug#4196)
                        (tempfile
-                        (make-temp-file (file-name-nondirectory target-file)))
+                        ;; If target-file is relative and includes
+                        ;; leading directories, make-temp-file will
+                        ;; assume those leading directories exist
+                        ;; under temporary-file-directory, which might
+                        ;; not be true.  So strip leading directories
+                        ;; from relative file names before calling
+                        ;; make-temp-file.
+                        (if (file-name-absolute-p target-file)
+                            (make-temp-file target-file)
+                          (make-temp-file
+                           (file-name-nondirectory target-file))))
                        (default-modes (default-file-modes))
                        (temp-modes (logand default-modes #o600))
                        (desired-modes (logand default-modes #o666))