[babl] Generate ChangeLog from git log

[Martin Nordholts <martinn src gnome org>]

commit c8529148809c6e57cb36d478fe7a6a836d7415fc
Author: Martin Nordholts <martinn src gnome org>
Date:   Tue Jul 14 19:55:20 2009 +0200

    Generate ChangeLog from git log
    
    Add rule to generate ChangeLog from git log, copied from pango and
    Behdad Esfahbod. Also disable the rss generation in docs since the rss
    tool can't handle the git log format.

 ChangeLog => ChangeLog.pre-0-1 |   10 ----------
 Makefile.am                    |   23 +++++++++++++++++++++++
 docs/Makefile.am               |   10 +---------
 3 files changed, 24 insertions(+), 19 deletions(-)
---
diff --git a/ChangeLog b/ChangeLog.pre-0-1
similarity index 99%
rename from ChangeLog
rename to ChangeLog.pre-0-1
index bff820a..14711c1 100644
--- a/ChangeLog
+++ b/ChangeLog.pre-0-1
@@ -1,14 +1,4 @@
 
-
-
-
-	NOTE: After the migration to git this ChangeLog is no longer used
-	during development. Instead, it will be updated prior to every
-	release based on the git log.
-
-
-
-
 =========================== 0.1.0 released =============================
 
 2009-05-20  Martin Nordholts  <martinn src gnome org>
diff --git a/Makefile.am b/Makefile.am
index 7a39f34..8e95d7a 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -13,6 +13,7 @@ built_dist_files = README
 
 EXTRA_DIST = \
 	$(built_dist_files)	\
+	ChangeLog.pre-0-1	\
 	AUTHORS			\
 	COPYING			\
 	INSTALL			\
@@ -48,3 +49,25 @@ distclean-local:
 		rm -f $(BUILT_EXTRA_DIST);	\
 	fi
 
+
+
+### ChangeLog generation
+
+CHANGELOG_START = BABL_0_1_0
+
+ChangeLog: $(srcdir)/ChangeLog
+$(srcdir)/ChangeLog:
+	@echo Creating $@
+	@if test -d "$(srcdir)/.git"; then \
+	  (GIT_DIR=$(top_srcdir)/.git ./missing --run \
+	   git log $(CHANGELOG_START)^.. --stat) | fmt --split-only > $  tmp \
+	  && mv -f $  tmp $@ \
+	  || ($(RM) $  tmp; \
+	      echo Failed to generate ChangeLog, your ChangeLog may be outdated >&2; \
+	      (test -f $@ || echo git-log is required to generate this file >> $@)); \
+	else \
+	  test -f $@ || \
+	  (echo A git checkout and git-log is required to generate ChangeLog >&2 && \
+	  echo A git checkout and git-log is required to generate this file >> $@); \
+	fi
+.PHONY: $(srcdir)/ChangeLog
diff --git a/docs/Makefile.am b/docs/Makefile.am
index 6c26d32..48905f1 100644
--- a/docs/Makefile.am
+++ b/docs/Makefile.am
@@ -29,7 +29,7 @@ BUILT_EXTRA_DIST = index.html BablFishPath.html BablFishPath.txt
 CLEANFILES = README changelog.rss
 DISTCLEANFILES = index-static.html $(BUILT_EXTRA_DIST)
 
-all: $(HTML_FILES) rss
+all: $(HTML_FILES)
 
 
 BablFishPath.html: $(babl_fish_path_dhtml)
@@ -71,14 +71,6 @@ distclean-local:
 		rm -f $(BUILT_EXTRA_DIST);	\
 	fi
 
-rss: changelog.rss
-
-changelog.rss: ../ChangeLog
-	echo -n " RSS:"
-	echo -n " $@"
-	tools/changelog2rss $< > $@ && \
-	echo " [OK]" || echo " Fail"
-
 web: all graphics
 	echo -n " WEB: "
 	ping -c 1 $(WEBSITE_HOST) >/dev/null && \