[evince] [build] Rename ChangeLog and autogenerate it

[Carlos Garcia Campos <carlosgc src gnome org>]

commit d224d9bb721bf7e70dafc519ac24855e17b0d603
Author: Carlos Garcia Campos <carlosgc gnome org>
Date:   Tue Apr 28 11:53:06 2009 +0200

    [build] Rename ChangeLog and autogenerate it
---
 ChangeLog => ChangeLog.pre-git |    0
 Makefile.am                    |   21 +++++++++++++++++++++
 2 files changed, 21 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 a46473a..9029b00 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -54,3 +54,24 @@ DISTCHECK_CONFIGURE_FLAGS = --disable-schemas-install --disable-scrollkeeper --e
 
 # Ignore scrollkeeper issues for now.  @#*$& scrollkeeper
 distuninstallcheck_listfiles = find . -type f -print | grep -v scrollkeeper | grep -v /share/gnome/help/ | grep -v \.omf
+
+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 -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+	      echo Failed to generate ChangeLog, your ChangeLog may be outdated 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