[gcompris/GCOMPRIS_8_3] Create the ChangeLog automatically from git log.

[Bruno Coudoin <bcoudoin src gnome org>]

commit e5109df8aad999e3f52b7e5942e22a02cb5b34c6
Author: Bruno Coudoin <bruno coudoin free fr>
Date:   Mon Jul 13 15:01:09 2009 +0200

    Create the ChangeLog automatically from git log.

 Makefile.am |   12 ++++++++++++
 1 files changed, 12 insertions(+), 0 deletions(-)
---
diff --git a/Makefile.am b/Makefile.am
index 8aa8795..854c735 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -74,6 +74,18 @@ dist-hook:
 	  $(mkinstalldirs) $(distdir)/$(PACKAGE_DATA_DIR); \
 	  cd $(srcdir)/$(PACKAGE_DATA_DIR) ; tar cf -  --exclude "Makefile.in" --exclude "Makefile" --exclude "*~" --exclude ".*" --exclude .svn --exclude .xvpics * | ( cd ../$(distdir)/$(PACKAGE_DATA_DIR) ; tar xf -) ; cd .. ; \
 	fi
+	@if test -d "$(srcdir)/.git"; \
+	then \
+		echo Creating ChangeLog && \
+		( cd "$(top_srcdir)" && \
+		  echo '# Generated by Makefile. Do not edit.'; echo; \
+		  $(top_srcdir)/missing --run git log --stat ) > ChangeLog.tmp \
+		&& mv -f ChangeLog.tmp $(top_distdir)/ChangeLog \
+		|| ( rm -f ChangeLog.tmp ; \
+		     echo Failed to generate ChangeLog >&2 ); \
+	else \
+		echo A git clone is required to generate a ChangeLog >&2; \
+	fi
 
 
 CONFIG_CLEAN_FILES = gcompris.desktop gcompris-edit.desktop config.h.mingw \