sympa: Fix build with gettext 0.25 and strictDeps (#486521)

diff --git a/configure.ac b/configure.ac

index 2182b31..6292827 100644

--- a/configure.ac

+++ b/configure.ac

@@ -23,12 +23,14 @@

 # You should have received a copy of the GNU General Public License

 # along with this program.  If not, see <http://www.gnu.org/licenses/>.

+AC_CONFIG_MACRO_DIRS([m4])

+

 AC_PREREQ(2.60)

 AC_INIT(sympa, 6.2.76, devel@sympa.community)

 AM_INIT_AUTOMAKE([foreign -Wall -Werror 1.9 tar-pax])

 m4_ifdef([AM_SILENT_RULES], [AM_SILENT_RULES([yes])])

-AM_PO_SUBDIRS

-GETTEXT_MACRO_VERSION=0.19

+AM_GNU_GETTEXT([external])

+AM_GNU_GETTEXT_VERSION([0.25])

 AC_PREFIX_DEFAULT(/home/sympa)

    "--with-spooldir=${dataDir}/spool"

    "--with-expldir=${dataDir}/list_data"

  ];

  nativeBuildInputs = [ autoreconfHook ];

  buildInputs = [ perlEnv ];

  patches = [ ./make-docs.patch ];

  prePatch = ''

    patchShebangs po/sympa/add-lang.pl

  '';

  nativeBuildInputs = [

    autoreconfHook

    perlEnv

  ];

  strictDeps = true;

  patches = [

    ./make-docs.patch

    ./gettext-0.25.patch

  ];

  preInstall = ''

    mkdir "$TMP/bin"