Re: bug#54667: 29.0.50; posix_spawn breaks emacs-gdb

[Robert Pluim]

>>>>> On Wed, 06 Apr 2022 14:09:04 +0300, Eli Zaretskii <eliz@gnu.org> said:

    >> From: Robert Pluim <rpluim@gmail.com>
    >> Date: Wed, 06 Apr 2022 11:02:12 +0200
    >> 
    >> >>>>> On Mon, 04 Apr 2022 16:11:51 +0200, Robert Pluim 
<rpluim@gmail.com> said:
    Robert> In emacs-28 we only use posix_spawn on macOS because its vork is
    Robert> sub-optimal. I donʼt remember the rationale for switching to using 
it
    Robert> everywhere, itʼs undoubtedly in the archives somewhere.
    >> 
    Robert> Closing.
    Robert> Committed as 8103b060d8
    >> 
    >> Actually, do we want this in emacs-28 as well?

    Eli> The fix installed on master isn't macOS-specific, AFAICT.  Can it be
    Eli> reasonably installed on emacs-28 as macOS-specific?  If yes, I think
    Eli> we should indeed backport it.

USABLE_POSIX_SPAWN is 0 on emacs-28 for every platform except macOS,
so applying the same patch as on master is all thatʼs needed.

Robert
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