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Date: Mon, 28 Mar 2022 14:04:31 +0200 (CEST)
From: Richard Biener <rguenther@suse.de>
To: Andreas Schwab <schwab@linux-m68k.org>
cc: Richard Biener via Gcc-patches <gcc-patches@gcc.gnu.org>, 
 Tom de Vries <tdevries@suse.de>, Jakub Jelinek <jakub@redhat.com>
Subject: Re: [PATCH][libgomp, testsuite] Fix hardcoded libexec in
 plugin/configfrag.ac
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On Mon, 28 Mar 2022, Andreas Schwab wrote:

> On Mär 28 2022, Richard Biener via Gcc-patches wrote:
> 
> > OK in principle, but I have no idea on how portable
> >
> > $(libexecdir:\$(exec_prefix)/%=%)
> >
> > is going to be?
> 
> We already require GNU make, don't we?
> 
> > We should aim for POSIX shell compatibility here, whatever that
> > exactly is.
> 
> It's not a shell construct.

Ah, it's only substituted into Makefile.in - in that case yes,
we already require GNU make.  If it's evaluated by that and not
a subshell of it then it should be indeed fine.

Richard.