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.

1 files changed, 4 insertions, 1 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/>.