[libslab] Autgenerate ChangeLog

[Cosimo Cecchi <cosimoc src gnome org>]

commit 3d3673d6547b45cb90c9ed3f5d69cc5afdd76bea
Author: Cosimo Cecchi <cosimoc gnome org>
Date:   Sat Jul 25 11:36:31 2009 +0200

    Autgenerate ChangeLog

 Makefile.am |   20 +++++++++++++++++++-
 1 files changed, 19 insertions(+), 1 deletions(-)
---
diff --git a/Makefile.am b/Makefile.am
index 0cc8622..5ed3e02 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -3,5 +3,23 @@ SUBDIRS = libslab po
 pkgconfigdir = $(libdir)/pkgconfig
 pkgconfig_DATA = libslab.pc
 
+GIT_START = b515f410cb472ae416995c5578d98bab7f80b504
+
+ChangeLog:
+	@echo Creating $@
+	@if test -d "$(srcdir)/.git"; then \
+	  (GIT_DIR=$(top_srcdir)/.git ./missing --run git log $(GIT_START).. --stat -M -C --name-status  --date=short --no-color) | fmt --split-only > $  tmp \
+	  && mv -f $  tmp $@ \
+	  || ($(RM) $  tmp; \
+	      echo Failed to generate ChangeLog, your ChangeLog may be outdated >&2; \
+	      (test -f $@ || echo git-log is required to generate this file >> $@)); \
+	else \
+	  test -f $@ || \
+	  (echo A git checkout and git-log is required to generate ChangeLog >&2 && \
+	  echo A git checkout and git-log is required to generate this file >> $@); \
+	fi
+
 EXTRA_DIST =		\
-	ChangeLog.old	
+	ChangeLog.old
+
+.PHONY: ChangeLog