AUCTeX doesn't build with latest Emacs master

[Arash Esbati]

Hi all,

I wanted to test the patches provided by Werner[1] and discovered that
AUCTeX currently doesn't build with Emacs from master (my repo version
is 3e93457ddb).  It seems that `update-file-autoloads' is gone since
autoload.el is now under lisp/obsolete.  The replacement is
`loaddefs-generate' which has a different signature.  I'm not really
familiar with this part of AUCTeX, can someone have a look on this?

I played with it and come up with this to reanimate my AUCTeX
installation, but it doesn't look right to me.

--8<---------------cut here---------------start------------->8---
diff --git a/Makefile.in b/Makefile.in
index d62644f9..7b6fa8ca 100644
--- a/Makefile.in
+++ b/Makefile.in
@@ -52,14 +52,24 @@ PACKAGE=auctex
 PACKAGE_INFO=auctex preview-latex
 EMACS=@EMACS@
 ELCC=$(EMACS) -batch -q -no-site-file -no-init-file -l lpath.el
-AUTOLOAD=--eval '(let ((autoload-file (expand-file-name "$@"))) \
+AUTOLOAD=--eval '\
+(let* ((autoload-file (expand-file-name "$@")) \
+       (autoload-file-dir (file-name-directory autoload-file)) \
+       (autoload-file-name (file-name-nondirectory autoload-file))) \
   (mapcar (lambda (file) \
-            (update-file-autoloads file nil autoload-file)) \
+            (if (fboundp (quote loaddefs-generate)) \
+                (loaddefs-generate autoload-file-dir autoload-file-name) \
+              (update-file-autoloads file nil autoload-file))) \
           command-line-args-left) \
   (save-buffers-kill-emacs t))'

-PREVIEW_AUTOLOAD=--eval '(let ((autoload-file (expand-file-name "$@"))) \
-  (update-file-autoloads "preview.el" nil autoload-file) \
+PREVIEW_AUTOLOAD=--eval '\
+(let* ((autoload-file (expand-file-name "$@")) \
+       (autoload-file-dir (file-name-directory autoload-file)) \
+       (autoload-file-name (file-name-nondirectory autoload-file))) \
+  (if (fboundp (quote loaddefs-generate)) \
+      (loaddefs-generate autoload-file-dir autoload-file) \
+    (update-file-autoloads "preview.el" nil autoload-file)) \
   (save-buffers-kill-emacs t))'

 # Files and directories excluded from distributed tar ball.
--8<---------------cut here---------------end--------------->8---

Best, Arash

Footnotes:
[1]  https://lists.gnu.org/archive/html/auctex/2022-08/msg00000.html