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| From: | Paul Eggert |
| Subject: | Re: Automake's file locking (was Re: Autoconf/Automake is not using version from AC_INIT) |
| Date: | Thu, 28 Jan 2021 13:22:42 -0800 |
| User-agent: | Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.6.1 |
On 1/28/21 10:34 AM, Zack Weinberg wrote:
we could instead use the battle-tested technique used by Emacs: symlink sentinels. (See https://git.savannah.gnu.org/cgit/emacs.git/tree/src/filelock.c .)
Although that Emacs code is battle-tested, one of the things it does is fall back on regular files on platforms where symlinks don't work.
Might be simpler to use a directory sentinel.
The main reason I can think of, not to do this, is that it would make the locking strategy incompatible with that used by older autom4te;
I would say "don't do that"; just stick with current autom4te.
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