[gegl] Auto-generate ChangeLog files for Gegl#.

[Ruben Vermeersch <rubenv src gnome org>]

commit 0ea1af051bcafe58cf5451b24838e8ff19392c93
Author: Ruben Vermeersch <ruben savanne be>
Date:   Sun Jul 26 17:12:44 2009 +0200

    Auto-generate ChangeLog files for Gegl#.

 bindings/gegl-sharp/.gitignore                     |    2 +
 .../gegl-sharp/{ChangeLog => ChangeLog.pre-0-1}    |    0
 bindings/gegl-sharp/Makefile.am                    |   23 ++++++++++++++++++++
 3 files changed, 25 insertions(+), 0 deletions(-)
---
diff --git a/bindings/gegl-sharp/.gitignore b/bindings/gegl-sharp/.gitignore
index 4f818d9..a1a8dea 100644
--- a/bindings/gegl-sharp/.gitignore
+++ b/bindings/gegl-sharp/.gitignore
@@ -1,3 +1,5 @@
+/ChangeLog
+
 Makefile
 Makefile.in
 
diff --git a/bindings/gegl-sharp/ChangeLog b/bindings/gegl-sharp/ChangeLog.pre-0-1
similarity index 100%
rename from bindings/gegl-sharp/ChangeLog
rename to bindings/gegl-sharp/ChangeLog.pre-0-1
diff --git a/bindings/gegl-sharp/Makefile.am b/bindings/gegl-sharp/Makefile.am
index c79256d..9cf57a2 100644
--- a/bindings/gegl-sharp/Makefile.am
+++ b/bindings/gegl-sharp/Makefile.am
@@ -1,3 +1,26 @@
 SUBDIRS = gegl sample #doc
 
+EXTRA_DIST = 			\
+	ChangeLog.pre-0-1
 
+### ChangeLog generation
+
+CHANGELOG_START = 5e2cc2146486ce0c1ebc0cbf68770dafafcb123f
+GIT_ROOT = "$(top_srcdir)/../../"
+
+ChangeLog: $(srcdir)/ChangeLog
+$(srcdir)/ChangeLog:
+	@echo Creating $@
+	@if test -d $(GIT_ROOT)/.git; then \
+	  (GIT_DIR=$(GIT_ROOT)/.git $(GIT_ROOT)/missing --run \
+	   git log $(CHANGELOG_START)^.. --stat -- bindings/gegl-sharp) | 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+	      echo Failed to generate ChangeLog, your ChangeLog may be outdated 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