From b7f3159486f547cc892b5f2c8d9ecdfde27434c3 Mon Sep 17 00:00:00 2001
From: Thomas Wood <thomas.wood@intel.com>
Date: Wed, 18 Nov 2009 10:21:04 +0000
Subject: [PATCH] Automatically generate the ChangeLog file from git logs

---
 ChangeLog   |  3 ++-
 Makefile.am | 13 +++++++++++++
 2 files changed, 15 insertions(+), 1 deletion(-)

diff --git a/ChangeLog b/ChangeLog
index 139597f9..23060b72 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,2 +1,3 @@
-
+The ChangeLog is auto-generated when releasing. If you are seeing this, use
+'git log' for a detailed list of changes.
 
diff --git a/Makefile.am b/Makefile.am
index 8934ded6..d9155446 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -43,3 +43,16 @@ MAINTAINERCLEANFILES = \
 
 -include $(top_srcdir)/git.mk
 
+dist-hook:
+	@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