[nautilus] Add makefile rules to generate ChangeLog

[Alexander Larsson <alexl src gnome org>]

commit 8acf8338c97387af3b93793760a3b1d64e752a2c
Author: Alexander Larsson <alexl redhat com>
Date:   Fri Apr 17 13:58:30 2009 +0200

    Add makefile rules to generate ChangeLog
---
 Makefile.am |   21 +++++++++++++++++++++
 1 files changed, 21 insertions(+), 0 deletions(-)

diff --git a/Makefile.am b/Makefile.am
index 8d2b5bf..61d117c 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -58,3 +58,24 @@ DISTCLEANFILES = \
   intltool-update
 
 DISTCHECK_CONFIGURE_FLAGS = --disable-update-mimedb --enable-gtk-doc
+
+distclean-local:
+	if test $(srdcir) = .; then :; else \
+		rm -f ChangeLog; \
+	fi
+
+ChangeLog:
+	@echo Creating $@
+	@if test -d "$(srcdir)/.git"; then \
+	  (GIT_DIR=$(top_srcdir)/.git ./missing --run git log NAUTILUS2_26_2.. --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+	      echo Failed to generate ChangeLog, your ChangeLog may be outdated 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