[libsigc++2] Set libtool version information

[Daniel Elstner <daniel src gnome org>]

commit 2c53ba63b300eca5a23f2c7cca6a8c9df1e44a2f
Author: Daniel Elstner <danielk openismus com>
Date:   Mon Aug 17 15:27:19 2009 +0200

    Set libtool version information
    
    * sigc++/Makefile.am (libsigc_2_0_la_LDFLAGS): Add libtool option
    -version-info 0:0:0 to specify the version information explicitly.

 ChangeLog          |    7 +++++++
 sigc++/Makefile.am |    3 ++-
 2 files changed, 9 insertions(+), 1 deletions(-)
---
diff --git a/ChangeLog b/ChangeLog
index 345892c..f3bb4bb 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,10 @@
+2009-08-17  Daniel Elstner  <danielk openismus com>
+
+	Set libtool version information
+
+	* sigc++/Makefile.am (libsigc_2_0_la_LDFLAGS): Add libtool option
+	-version-info 0:0:0 to specify the version information explicitly.
+
 2009-08-16  Daniel Elstner  <daniel kitta gmail com>
 
 	Remove unused parameter names for correctness
diff --git a/sigc++/Makefile.am b/sigc++/Makefile.am
index 7eba5e5..5fc4d4f 100644
--- a/sigc++/Makefile.am
+++ b/sigc++/Makefile.am
@@ -40,7 +40,8 @@ libsigc_2_0_la_SOURCES =	\
 
 EXTRA_libsigc_2_0_la_SOURCES = $(sigc_built_cc)
 
-libsigc_2_0_la_LDFLAGS = -no-undefined
+# http://www.gnu.org/software/libtool/manual/html_node/Updating-version-info.html
+libsigc_2_0_la_LDFLAGS = -no-undefined -version-info 0:0:0
 
 AM_CPPFLAGS = -I$(top_builddir) -I$(top_srcdir)
 AM_CXXFLAGS = $(SIGC_WXXFLAGS)