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Re: AC_PROG_CC_STDC and ac_cv_prog_cc_stdc

From: Paul Eggert
Subject: Re: AC_PROG_CC_STDC and ac_cv_prog_cc_stdc
Date: Sat, 06 May 2006 10:54:37 -0700
User-agent: Gnus/5.1008 (Gnus v5.10.8) Emacs/21.4 (gnu/linux)

Ralf Wildenhues <address@hidden> writes:

> Some Automake testsuite tests currently use
>   ./configure ac_cv_prog_cc_stdc=no
> to force use of ansi2knr.  I know the topic is becoming more and more
> obsolete,

It's not "more and more obsolete".  It's obsolete, period.  Nobody
uses K&R compilers any more for real work, and this has been true for
several years.  Only software archeologists care about that sort of
thing, and software archeology is outside the scope of Autoconf.

That being said, the Autoconf patch looks OK to me, if only to cater
to Automake; except the NEWS item is a bit cryptic.  How about this
news item instead?

  Passing 'ac_cv_prog_cc_stdc=no' to 'configure' now sets ac_cv_prog_cc_c99
  and ac_cv_prog_cc_c89 to 'no' as well, for backward compatibility with
  obsolete K&R tests in the Automake test suite.

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