From 7ed303705c17b127cc224ee1ddecc53a931d65e5 Mon Sep 17 00:00:00 2001
From: Mathieu Lirzin <mthl@gnu.org>
Date: Wed, 22 Jul 2015 01:00:45 +0200
Subject: build: Generate 'ChangeLog' upon 'make dist'.

* ChangeLog: Rename to ...
* ChangeLog.old: ... this.
* ChangeLog: New file.
* Makefile.am (gen_start_date): New variable.
(gen-ChangeLog, dist-hook): New targets.
(EXTRA_DIST): Add 'ChangeLog.old'.
* build-aux/gitlog-to-changelog: New file, from Gnulib.
---
 makefile.am | 17 ++++++++++++++++-
 1 file changed, 16 insertions(+), 1 deletion(-)

(limited to 'makefile.am')

diff --git a/makefile.am b/makefile.am
index da26a89..61fbe56 100644
--- a/makefile.am
+++ b/makefile.am
@@ -26,7 +26,7 @@ CP = @CP@
 
 CLEANFILES = mcron.c
 
-EXTRA_DIST = makefile.ed mcron.c.template BUGS
+EXTRA_DIST = makefile.ed mcron.c.template BUGS ChangeLog.old
 
 info_TEXINFOS = doc/mcron.texi
 doc_mcron_TEXINFOS = doc/fdl.texi
@@ -46,6 +46,21 @@ mcron.c : scm/mcron/main.scm scm/mcron/crontab.scm makefile.ed mcron.c.template
 	@$(ED) < makefile.ed > /dev/null 2>&1
 	@rm -f mcron.escaped.scm > /dev/null 2>&1
 
+dist-hook: gen-ChangeLog
+
+gen_start_date = 2015-06-26
+.PHONY: gen-ChangeLog
+gen-ChangeLog:
+	$(AM_V_GEN)if test -d $(srcdir)/.git; then			\
+	  log_fix="$(srcdir)/build-aux/git-log-fix";			\
+	  test -e "$$log_fix"						\
+	    && amend_git_log="--amend=$$log_fix"			\
+	    || amend_git_log=;						\
+	  $(top_srcdir)/build-aux/gitlog-to-changelog			\
+	    $$amend_git_log --since=$(gen_start_date) > $(distdir)/cl-t && \
+	    { rm -f $(distdir)/ChangeLog &&				\
+	      mv $(distdir)/cl-t $(distdir)/ChangeLog; }		\
+	fi
 
 #full program prefix
 fpp = $(DESTDIR)$(bindir)/@real_program_prefix@
-- 
cgit v1.2.3