[pango] Make pango_interface_age automatic

[Behdad Esfahbod <behdad src gnome org>]

commit caed415f553a60176b33e30ee37e891cb720e9c6
Author: Behdad Esfahbod <behdad behdad org>
Date:   Mon Aug 17 18:29:37 2009 -0400

    Make pango_interface_age automatic
    
    For unstable releases, we act as if each micro release has new API.
    For stable releases, no micro release adds new API.

 configure.in |   10 ++++++++++
 1 files changed, 10 insertions(+), 0 deletions(-)
---
diff --git a/configure.in b/configure.in
index 0bca1d2..98403ca 100644
--- a/configure.in
+++ b/configure.in
@@ -23,6 +23,7 @@ dnl The triplet
 m4_define([pango_version_major], [1])
 m4_define([pango_version_minor], [25])
 m4_define([pango_version_micro], [3])
+
 m4_define([pango_version],
           [pango_version_major.pango_version_minor.pango_version_micro])
 dnl The X.Y in -lpango-X.Y line. This is expected to stay 1.0 until Pango 2.
@@ -30,6 +31,15 @@ m4_define([pango_api_version], [1.0])
 dnl Number of releases since we've added interfaces
 dnl XXX For 1.25 release simply remove it and make it automatic.
 m4_define([pango_interface_age], [0])
+m4_if(m4_eval(pango_version_minor % 2), [1],
+      [
+	dnl for unstable releases
+	m4_define([pango_interface_age], [0])
+      ],
+      [
+	dnl for stable releases
+	m4_define([pango_interface_age], pango_version_micro)
+      ])
 dnl Number of releases since we've broken binary compatibility.
 m4_define([pango_binary_age],
           [m4_eval(100 * pango_version_minor + pango_version_micro)])