From e793178adbd7d0d2202c0ab4bc6a9fec1df8851f Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Ludovic=20Court=C3=A8s?= <ludo@gnu.org>
Date: Sun, 12 May 2013 16:14:25 +0200
Subject: [PATCH] build: Generate a ChangeLog file upon "make dist".

* Makefile.am (sync-synopses): New rule, formerly `dist-hook.
  (gen-ChangeLog): New rule.
  (dist-hook): Depend on these two targets.
---
 ChangeLog   |  5 ++++-
 Makefile.am | 14 +++++++++++++-
 2 files changed, 17 insertions(+), 2 deletions(-)

diff --git a/ChangeLog b/ChangeLog
index 83deffcada..d6ea694326 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1 +1,4 @@
-Please see the Git commit log at <https://gitorious.org/guix>.
+Normally a ChangeLog is generated at "make dist" time and available in
+source tarballs.
+
+If not, see the Git commit log at <http://git.sv.gnu.org/cgit/guix.git/>.
diff --git a/Makefile.am b/Makefile.am
index 69b4af013a..538fad32a4 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -412,6 +412,18 @@ AM_DISTCHECK_CONFIGURE_FLAGS =			\
   --with-nix-prefix="$(NIX_PREFIX)"		\
   --enable-daemon
 
-dist-hook:
+dist-hook: sync-synopses gen-ChangeLog
+
+sync-synopses:
 	-$(top_builddir)/pre-inst-env $(GUILE)		\
 	   $(top_srcdir)/build-aux/sync-synopses.scm
+
+gen-ChangeLog:
+	if test -d .git; then				\
+	  $(top_srcdir)/build-aux/gitlog-to-changelog	\
+	    > $(distdir)/cl-t;				\
+	  rm -f $(distdir)/ChangeLog;			\
+	  mv $(distdir)/cl-t $(distdir)/ChangeLog;	\
+	fi
+
+.PHONY: sync-synopses gen-ChangeLog