Hi All,

Due to some versioning conflict, I get a build error with AM_PROG_AR. It 
appears when using m4_pattern_allow or m4_ifdef makes it possible to get 
the job done nonetheless.

The commit sha1 I have been building is: 
8f63b9b670899c9a1a6e017e8979614a9b4b649b

The relevant autotools versions are:

automake (GNU automake) 1.11.1
autoconf (GNU Autoconf) 2.68

The problem reported on the console is:

configure.ac:67: warning: macro `AM_PROG_AR' not found in library
autoreconf: configure.ac: AM_GNU_GETTEXT is used, but not 
AM_GNU_GETTEXT_VERSION
configure.ac:67: warning: macro `AM_PROG_AR' not found in library
configure.ac:67: error: possibly undefined macro: AM_PROG_AR
       If this token and others are legitimate, please use m4_pattern_allow.
       See the Autoconf documentation.

The problem about AM_GNU_GETTEXT is not breaking. A bit neatness here 
perhaps wanted?

My patch to fight the main problem is attached.