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From: Eli Zaretskii <eliz@gnu.org>
To: Bruno Haible <bruno@clisp.org>
Cc: bug-gnulib@gnu.org, eggert@cs.ucla.edu, keith@users.osdn.me
Subject: Re: Gnulib's alloca.h used even when there is a system header
Date: Sun, 10 Mar 2019 21:39:31 +0200	[thread overview]
Message-ID: <83k1h65xjg.fsf@gnu.org> (raw)
In-Reply-To: <6311558.T2CZKSR39q@omega> (message from Bruno Haible on Sun, 10 Mar 2019 20:03:33 +0100)

> From: Bruno Haible <bruno@clisp.org>
> Cc: Eli Zaretskii <eliz@gnu.org>, bug-gnulib@gnu.org, eggert@cs.ucla.edu
> Date: Sun, 10 Mar 2019 20:03:33 +0100
> 
> So, Gnulib's alloca.h and the system's alloca.h are both included, and
> the system's alloca.h comes last. To avoid this kind of trouble, we
> need to make use of '#include_next <alloca.h>'. I think this patch
> should do it. Can you please review it, Eli?

It LGTM, since I already succeeded to build that package with this:

> +#  if (defined _WIN32 && ! defined __CYGWIN__) && @HAVE_ALLOCA_H@

replaced by just "#if HAVE_ALLOCA_H", and because the 2 additional
conditions you propose are obviously true for MinGW.

> +  if test $ac_cv_working_alloca_h = yes; then
> +    HAVE_ALLOCA_H=1
> +  else
> +    HAVE_ALLOCA_H=0
> +  fi
> +  AC_SUBST([HAVE_ALLOCA_H])
>  ])

This cannot hurt, but in the case in point the package was already
testing for alloca.h, and defined HAVE_ALLOCA_H by itself.

Thanks.


  reply	other threads:[~2019-03-10 19:42 UTC|newest]

Thread overview: 15+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-02-17 17:20 Gnulib's alloca.h used even when there is a system header Eli Zaretskii
2019-02-17 20:06 ` Paul Eggert
2019-02-17 20:24   ` Eli Zaretskii
2019-02-17 21:09     ` Paul Eggert
2019-02-17 23:32       ` Bruno Haible
2019-02-18 16:59       ` Eli Zaretskii
2019-02-18 23:32         ` Bruno Haible
2019-02-19 17:18           ` Eli Zaretskii
2019-02-28 18:40             ` Eli Zaretskii
2019-03-09 19:25             ` Keith Marshall
2019-03-10 19:03               ` Bruno Haible
2019-03-10 19:39                 ` Eli Zaretskii [this message]
2019-03-10 19:54                   ` Bruno Haible
2019-03-10 20:00                     ` Eli Zaretskii
2019-02-17 23:28 ` Bruno Haible

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