On Wed, Jul 10, 2013 at 10:29:35AM +0200, Lukas Slebodnik wrote:
> On (04/07/13 15:23), Petr Spacek wrote:
> >Hello,
> >
> >several warnings from autotools popped up after upgrade to Fedora 19.
> >Attached patches should make autotools configuration more modern.
> >
> >-- 
> >Petr^2 Spacek
> 
> >From 07caec808e394bfcbd898905e917731cb3778e68 Mon Sep 17 00:00:00 2001
> >From: Petr Spacek <pspa...@redhat.com>
> >Date: Thu, 4 Jul 2013 14:04:57 +0200
> >Subject: [PATCH] Add missing ar check to configure.ac.
> >
> >Signed-off-by: Petr Spacek <pspa...@redhat.com>
> >---
> > configure.ac | 1 +
> > 1 file changed, 1 insertion(+)
> >
> >diff --git a/configure.ac b/configure.ac
> >index 
> >222e520e0aa61bca58cff81bea672fcab04355b3..b6d66de1b862a6860226a5f9ae4a3f33842e6100
> > 100644
> >--- a/configure.ac
> >+++ b/configure.ac
> >@@ -10,6 +10,7 @@ AC_CONFIG_HEADERS([config.h])
> > AC_DISABLE_STATIC
> > 
> > # Checks for programs.
> >+AM_PROG_AR
> > AC_PROG_CC
> > AC_PROG_LIBTOOL
> > 
> >-- 
> >1.8.3.1
> >
> 
> This solution is not very portable. Automake <= 1.11 does not contain this
> macro.
> 
> configure.ac:14: warning: macro `AM_PROG_AR' not found in library
> configure.ac:14: error: possibly undefined macro: AM_PROG_AR
>       If this token and others are legitimate, please use m4_pattern_allow.
>       See the Autoconf documentation.
> autoreconf: /usr/bin/autoconf failed with exit status: 1
> 
> Better solution will be:
> m4_ifdef([AM_PROG_AR], [AM_PROG_AR])
> 
> You can find more information about this in mail thread
> http://lists.gnu.org/archive/html/automake/2012-05/msg00014.html

Even better is:
m4_pattern_allow([AM_PROG_AR])
AM_PROG_AR

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