[gconf-editor] Generate ChangeLog file from git log

[Cosimo Cecchi <cosimoc src gnome org>]

commit dd126519f52155008b1483aa98217f8f1b77732c
Author: Cosimo Cecchi <cosimoc gnome org>
Date:   Thu Apr 30 15:09:04 2009 +0200

    Generate ChangeLog file from git log
    
    Autogenerate the ChangeLog file from git log output.
---
 ChangeLog => ChangeLog.pre-git |    0
 Makefile.am                    |   17 +++++++++++++++++
 2 files changed, 17 insertions(+), 0 deletions(-)

diff --git a/ChangeLog b/ChangeLog.pre-git
similarity index 100%
rename from ChangeLog
rename to ChangeLog.pre-git
diff --git a/Makefile.am b/Makefile.am
index 788287d..d732ce3 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -4,6 +4,7 @@ ACLOCAL_AMFLAGS = -I m4
 
 EXTRA_DIST = \
 	autogen.sh \
+	ChangeLog.pre-git \
 	MAINTAINERS \
 	gnome-doc-utils.make
 
@@ -14,3 +15,19 @@ DISTCLEANFILES = \
   gnome-doc-utils.make
 
 DISTCHECK_CONFIGURE_FLAGS = --disable-scrollkeeper
+
+ChangeLog:
+	@echo Creating $@
+	@if test -d "$(srcdir)/.git"; then \
+	  (GIT_DIR=$(top_srcdir)/.git ./missing --run git log GCONF_EDITOR_2_26_0.. --stat -M -C --name-status  --date=short --no-color) | 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+	      echo Failed to generate ChangeLog, your ChangeLog may be outdated 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: ChangeLog