autogen.sh failure because of AM_PROG_AR

[Vladimir Zhbanov]

When I run autogen.sh I get the following error:
  ...
  autogen.sh: running /usr/bin/autoconf ...
  configure.ac:45: error: possibly undefined macro: AM_PROG_AR
        If this token and others are legitimate, please use m4_pattern_allow.
        See the Autoconf documentation.
  ***Error*** autogen.sh: /usr/bin/autoconf failed with exit status 1

geda-gaf README reads as follows:
  GNU Automake, version 1.6.0 or newer.

My automake version:
  automake (GNU automake) 1.11.1

The bug was introduced in
1f2cb71efdc3e9e46ed7df2781f795ef9507610a (build-sys: Add
AM_PROG_AR.) and is present in current git master head (commit
18427bf05edffdfe5e8ce65df0cc57728246cc2a).

Adding
  m4_pattern_allow([AM_PROG_AR])
in configure.ac seems to solve the issue.

See also other options in the discussion on this topic at
http://lists.gnu.org/archive/html/automake/2012-05/msg00012.html

[Peter TB Brett (peter-b)]

Min automake is now 1.11.0 - I need to update README.

[gpleda.org commit robot (gpleda-launchpad-robot)]

Bug was fixed by a commit
git master commit 72551519092481a39860df54f282c37e3efc4697
http://git.geda-project.org/geda-gaf/commit/?id=72551519092481a39860df54f282c37e3efc4697

commit 72551519092481a39860df54f282c37e3efc4697
Author: Peter TB Brett <email address hidden>
Commit: Peter TB Brett <email address hidden>

    build-sys: Only expand AM_PROG_AR if defined.

    Recent versions of Automake warn if AM_PROG_AR is not expanded befor
    AC_PROG_LIBTOOL. Unfortunately, AM_PROG_AR is only defined in
    Automake >= 1.12.0.

    Since we're only including AM_PROG_AR in order to shut Automake's
    warnings up, only expand it if it's actually defined.

    Closes-bug: lp-1229074