GNU bug report logs - #55025
Automake should allow one to enable POSIX make behavior

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From: help-debbugs <at> gnu.org (GNU bug Tracking System)
To: Karl Berry <karl <at> freefriends.org>
Cc: tracker <at> debbugs.gnu.org
Subject: bug#55025: closed (Automake should allow one to enable POSIX make
 behavior)
Date: Fri, 06 Oct 2023 22:41:02 +0000

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Your message dated Fri, 6 Oct 2023 16:40:32 -0600
with message-id <202310062240.396MeW9U012677 <at> freefriends.org>
and subject line Re: [PATCH] New "posix" automake option.
has caused the debbugs.gnu.org bug report #55025,
regarding Automake should allow one to enable POSIX make behavior
to be marked as done.

(If you believe you have received this mail in error, please contact
help-debbugs <at> gnu.org.)


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55025: https://debbugs.gnu.org/cgi/bugreport.cgi?bug=55025
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From: Vincent Lefevre <vincent <at> vinc17.net>
To: bug-automake <at> gnu.org
Subject: Automake should allow one to enable POSIX make behavior
Date: Tue, 19 Apr 2022 17:33:48 +0200

https://pubs.opengroup.org/onlinepubs/9699919799/utilities/make.html
says about the target rules:

  .POSIX
    The application shall ensure that this special target is specified
    without prerequisites or commands. If it appears as the first
    non-comment line in the makefile, /make/ shall process the makefile
    as specified by this section; otherwise, the behavior of /make/ is
    unspecified.

But even though one may add a .POSIX target as the first non-comment
line in one's Makefile.am file, Automake will add various non-comment
lines before this target in the generated Makefile. I received a
remark about that for GNU MPFR. Though GNU make does not require
this target to be the first non-comment line, this may matter with
other make implementations.

This could be done either by detecting a .POSIX target in Makefile.am
or with some AM_* macro in the configure.ac file.

-- 
Vincent Lefèvre <vincent <at> vinc17.net> - Web: <https://www.vinc17.net/>
100% accessible validated (X)HTML - Blog: <https://www.vinc17.net/blog/>
Work: CR INRIA - computer arithmetic / AriC project (LIP, ENS-Lyon)

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From: Karl Berry <karl <at> freefriends.org>
To: vincent <at> vinc17.net
Cc: 55025 <at> debbugs.gnu.org
Subject: Re: [PATCH] New "posix" automake option.
Date: Fri, 6 Oct 2023 16:40:32 -0600

I installed your patch (and added a tiny test case). Thanks Vincent!
Closing this bug (finally ...). -k

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