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Re: [Gcl-devel] Patch: adapt to newer autoconf versions

From: Gabriel Dos Reis
Subject: Re: [Gcl-devel] Patch: adapt to newer autoconf versions
Date: Thu, 20 Nov 2008 12:49:29 -0600

On Thu, Nov 20, 2008 at 10:19 AM, Jerry James <address@hidden> wrote:
> If autoconf 2.61 is used to process the current configure.in, it
> produces a script containing illegal shell script syntax, causing a
> script failure at runtime.  This is due to some obsolete autoconf
> usages within configure.in.  This patch fully updates configure.in for
> use by autoconf 2.61.  Let me explain a few bits of the patch.
> I added AC_PROG_EGREP, because AC_EGREP_HEADER (formerly
> AC_HEADER_EGREP) now expands to an expression that includes
> "$(EGREP)", which isn't set unless AC_PROG_EGREP is run.
> I added AC_GNU_SOURCE and a corresponding #undef in acconfig because
> some math functions (e.g., isnormal) aren't defined unless _GNU_SOURCE
> is defined.  There was already a workaround in the script for this,
> but it broke in a couple of cases on my Fedora 9 machine.

Hi Jerry,

Isn't _GNU_SOURCE GNU/Linux or glibc specific?

-- Gaby

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