[gnote] Add check for Gtkmm 3.4

[Aurimas Äernius <aurimasc src gnome org>]

commit d21fc503523f52a4dbd8f584e4e11153eaeb79d6
Author: Aurimas Äernius <aurisc4 gmail com>
Date:   Mon Apr 16 23:49:54 2012 +0300

    Add check for Gtkmm 3.4

 configure.ac |    5 +++++
 1 files changed, 5 insertions(+), 0 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index 3c38748..815daf9 100644
--- a/configure.ac
+++ b/configure.ac
@@ -64,6 +64,11 @@ AC_LANG_COMPILER_REQUIRE
 PKG_CHECK_MODULES(LIBGLIBMM, [glibmm-2.4])
 PKG_CHECK_MODULES(GTK, [gtk+-3.0 >= $GTK_VERSION])
 PKG_CHECK_MODULES(LIBGTKMM, [gtkmm-3.0 >= $LIBGTKMM_VERSION])
+# Check for gtkmm 3.4 or higher for extra features
+PKG_CHECK_EXISTS(gtkmm-3.0 >= 3.4,
+  [
+    AC_DEFINE(HAVE_GTKMM_3_4, 1, [Define to 1 if gtkmm version is at least 3.4])
+  ])
 # Check for glib 2.32 or higher, which have certain incompatibilities with older ones
 PKG_CHECK_EXISTS(glib-2.0 >= 2.32,
   [