[Makefile.am] Generage ChangeLog from git-log

diff --git a/Makefile.am b/Makefile.am
index 62b5a57..cec2a04 100644 (file)
--- a/Makefile.am
+++ b/Makefile.am
@@ -49,8 +49,25 @@ MAINTAINERCLEANFILES = \
        $(srcdir)/mkinstalldirs \
        $(srcdir)/omf.make \
        $(srcdir)/xmldocs.make \
+       $(srcdir)/ChangeLog \
        `find "$(srcdir)" -type f -name Makefile.in -print`
 
+ChangeLog: $(srcdir)/ChangeLog
+$(srcdir)/ChangeLog:
+       @echo Creating $@
+       @if test -d "$(srcdir)/.git"; then \
+         (GIT_DIR=$(top_srcdir)/.git ./missing --run git log 1.23.0^^.. --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+             echo Failed to generate ChangeLog, your ChangeLog may be outdated 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
+
 pkgconfigdir = $(libdir)/pkgconfig
 pkgconfig_DATA = pango.pc