--- gigedit/trunk/configure.ac	2017/05/17 16:14:20	3187
+++ gigedit/trunk/configure.ac	2017/07/10 20:27:44	3305
@@ -5,7 +5,7 @@
 
 m4_define(gigedit_ver_major, 1)
 m4_define(gigedit_ver_minor, 0)
-m4_define(gigedit_ver_release, 0.svn47)
+m4_define(gigedit_ver_release, 0.svn56)
 
 AC_INIT([gigedit], [gigedit_ver_major.gigedit_ver_minor.gigedit_ver_release])
 AC_CONFIG_SRCDIR([configure.ac])
@@ -79,6 +79,10 @@
 AC_PROG_OBJC
 AC_PROG_OBJCXX
 
+PKG_CHECK_EXISTS(gtk+-3.0 >= 2.99,
+        [PKG_CHECK_MODULES([GTK], [gtk+-3.0])],
+        [PKG_CHECK_MODULES([GTK], [gtk+-2.0])])
+
 PKG_PROG_PKG_CONFIG
 have_gtk3=no
 PKG_CHECK_EXISTS(gtkmm-3.0 >= 2.99,