Autogenerate ChangeLog on make dist

Makefile.am

@@ -2,7 +2,7 @@ SUBDIRS = plugins po
 
 EXTRA_DIST =			\
 	autogen.sh		\
-	ChangeLog
+	ChangeLog.pre-git
 
 DISTCLEANFILES = 		\
 	intltool-extract 	\
@@ -22,4 +22,22 @@ MAINTAINERCLEANFILES =		\
 
 DISTCHECK_CONFIGURE_FLAGS = --with-plugins=really-all
 
+# This is the last commit before the ChangeLog was converted
+CHANGELOG_START = 31a915800c37113e85f3b9f926e275beb7c06c91
+
+dist-hook:
+	@if test -d "$(srcdir)/.git"; \
+	then \
+		echo Creating ChangeLog && \
+		( cd "$(top_srcdir)" && \
+		  echo '# Generated by Makefile. Do not edit.'; echo; \
+		  $(top_srcdir)/missing --run git log -M -C --stat \
+		  $(CHANGELOG_START)..) > ChangeLog.tmp \
+		&& mv -f ChangeLog.tmp $(top_distdir)/ChangeLog \
+		|| ( rm -f ChangeLog.tmp ; \
+		     echo Failed to generate ChangeLog >&2 ); \
+	else \
+		echo A git clone is required to generate a ChangeLog >&2; \
+	fi
+
 -include $(top_srcdir)/git.mk

configure.ac

@@ -12,7 +12,7 @@ AC_SUBST(EOG_PLUGINS_MAJOR)
 
 AC_PREREQ(2.59)
 
-AM_INIT_AUTOMAKE([1.9 dist-bzip2 no-dist-gzip])
+AM_INIT_AUTOMAKE([1.9 foreign dist-bzip2 no-dist-gzip])
 # Support silencing the build output if supported (automake-1.11+)
 m4_ifdef([AM_SILENT_RULES],[AM_SILENT_RULES([yes])])