From: Paul Eggert <eggert@cs.ucla.edu>
To: 24974@debbugs.gnu.org
Subject: bug#24974: CANNOT_DUMP build assumes Emacs is already installed
Date: Sun, 20 Nov 2016 13:38:27 -0800 [thread overview]
Message-ID: <ec3a0ec9-e938-0339-a568-e0cbacf3a206@cs.ucla.edu> (raw)
The CANNOT_DUMP build procedure is confused: it assumes that the current version
of Emacs is already installed, and Emacs builds can fail (or be subtly wrong)
when this assumption is not true. To reproduce the problem, pick a directory
that doesn't exist ("/tmp/prefix" in the example below) and configure and build
this way:
./configure --prefix=/tmp/prefix CANNOT_DUMP=yes
make bootstrap
On my platform (Ubuntu 16.04 x86-64) the build fails as follows:
ln -f temacs bootstrap-emacs
make -C ../lisp compile-first EMACS="../src/bootstrap-emacs"
make[3]: Entering directory '/home/eggert/src/gnu/emacs/static-checking/lisp'
ELC emacs-lisp/macroexp.elc
Warning: Lisp directory '/tmp/prefix/share/emacs/26.0.50/lisp': No such file or
directory
Cannot open load file: No such file or directory, loadup.el
Makefile:282: recipe for target 'emacs-lisp/macroexp.elc' failed
The full command that fails (abbreviated "ELC emacs-lisp/macrorexp.elc above) is:
EMACSLOADPATH= '../src/bootstrap-emacs' -batch --no-site-file --no-site-lisp -l
autoload \
--eval "(setq generate-autoload-cookie \";;;###cal-autoload\")" \
--eval "(setq generated-autoload-file (expand-file-name (unmsys--file-name
\"calendar/cal-loaddefs.el\")))" \
-f batch-update-autoloads ./calendar
Running strace on this command reveals that it attempts to open only:
/tmp/prefix/share/emacs/26.0.50/lisp/loadup.el.elc
/tmp/prefix/share/emacs/26.0.50/lisp/loadup.el.el
/tmp/prefix/share/emacs/26.0.50/lisp/loadup.el
and it never attempts to open loadup.el in the current directory, which is
what's needed here.
By the way, why does Emacs try to open ".../loadup.el.elc"? Isn't that a waste
of time?
next reply other threads:[~2016-11-20 21:38 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-11-20 21:38 Paul Eggert [this message]
2016-12-01 0:36 ` bug#24974: CANNOT_DUMP build assumes Emacs is already installed Glenn Morris
2016-12-01 1:03 ` Daniel Colascione
2016-12-19 18:35 ` Glenn Morris
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