Re: automake's .el support vs. recent loss of byte-compile-dest-file

[Eli Zaretskii]

> From: Jim Meyering <address@hidden>
> Date: Tue, 28 Nov 2017 19:35:04 -0800
> Cc: emacs-devel <address@hidden>, Paul Eggert <address@hidden>
> 
> $ (export TMPDIR=/tmp; mkdir sub && : > sub/x.el && emacs --batch -l
> bytecomp --eval '(defun byte-compile-dest-file (f) "sub/x.elc")'
> --eval "(unless (byte-compile-file \"sub/x.el\") (kill-emacs 1))" )
> Creating file with prefix: No such file or directory, /tmp/sub/x.elc

Does the patch below fix this?

diff --git a/lisp/emacs-lisp/bytecomp.el b/lisp/emacs-lisp/bytecomp.el
index e4d8a20..fa6b789 100644
--- a/lisp/emacs-lisp/bytecomp.el
+++ b/lisp/emacs-lisp/bytecomp.el
@@ -1924,7 +1924,8 @@ byte-compile-file
                       ;; process is trying to load target-file (eg in a
                       ;; parallel bootstrap), it does not risk getting a
                       ;; half-finished file.  (Bug#4196)
-                      (tempfile (make-temp-file target-file))
+                      (tempfile
+                        (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))