I get this error:

./autogen.sh: ERROR: `aclocal -I /opt/gnome2/share/aclocal/' is too old.
aclocal (GNU automake) 1.10
Written by Tom Tromey <tromey@redhat.com>
       and Alexandre Duret-Lutz <adl@gnu.org>.

Copyright (C) 2006 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
           (version 1.7 or newer is required)

Because the awk comparison fail:

if (echo "1.10" | awk 'NR==1 { if( $(NF) >= '1.7') \
						exit 1; exit 0; }' );
then
    echo bad
fi