--- gnome-themes-extra-3.28/configure.ac
+++ gnome-themes-extra-3.28/configure.ac
@@ -1,10 +1,11 @@
 dnl Process this file with autoconf to produce a configure script.
-AC_PREREQ(2.53)
+AC_PREREQ([2.69])
 
-AC_INIT([gnome-themes-extra], [3.28],
-        [https://gitlab.gnome.org/GNOME/gnome-themes-extra/issues])
+AC_INIT([gnome-themes-extra],[3.28],[https://gitlab.gnome.org/GNOME/gnome-themes-extra/issues])
 
 AC_CONFIG_MACRO_DIR([m4])
+AM_GNU_GETTEXT(external)
+AM_GNU_GETTEXT_VERSION(0.22)
 
 AM_INIT_AUTOMAKE([1.9 tar-ustar foreign dist-xz no-dist-gzip])
 m4_ifdef([AM_SILENT_RULES],[AM_SILENT_RULES([yes])])
@@ -23,9 +24,9 @@
 AM_PATH_GLIB_2_0
 
 dnl Initialize libtool
-AM_DISABLE_STATIC
-AC_LIBTOOL_WIN32_DLL
-AM_PROG_LIBTOOL
+AC_DISABLE_STATIC([])
+
+LT_INIT
 
 dnl Initialize intltool
 IT_PROG_INTLTOOL([0.40.0])
@@ -34,8 +35,7 @@
 AC_SUBST(GETTEXT_PACKAGE)
 
 AC_ARG_ENABLE([gtk3-engine],
-              AC_HELP_STRING([--disable-gtk3-engine],
-                             [Disable Gtk+ 3.x engine [default=no]]),
+              AS_HELP_STRING([--disable-gtk3-engine],[Disable Gtk+ 3.x engine [default=no]]),
               enable_gtk3_engine=$enableval,
               enable_gtk3_engine=yes)
 AC_MSG_CHECKING([building gtk3 engine])
@@ -52,8 +52,7 @@
 AC_SUBST(GTK3_VERSION)
 
 AC_ARG_ENABLE([gtk2-engine],
-              AC_HELP_STRING([--disable-gtk2-engine],
-                             [Disable Gtk+-2 engine [default=no]]),
+              AS_HELP_STRING([--disable-gtk2-engine],[Disable Gtk+-2 engine [default=no]]),
               enable_gtk2_engine=$enableval,
               enable_gtk2_engine=yes)
 AC_MSG_CHECKING([building gtk2 engine])