This means we can use some newer features and get rid of some boilerplate code using the G_DECLARE_* macros.
As discussed on IRC, 2.44 is old enough by now to start depending on it.
dnl *** checks for dependency libraries ***
dnl GLib
-GLIB_REQ=2.40.0
+GLIB_REQ=2.44.0
AG_GST_GLIB_CHECK([$GLIB_REQ])
ORC_CHECK([0.4.24])
have_cxx = add_languages('cpp', required : false)
have_objc = add_languages('objc', required : false)
-glib_req = '>= 2.40.0'
+glib_req = '>= 2.44.0'
orc_req = '>= 0.4.24'
gst_req = '>= @0@.@1@.0'.format(gst_version_major, gst_version_minor)