doc: add missing semicolons to make rules

Problem reported by Peter Eisentraut in
<http://lists.gnu.org/archive/html/bug-autoconf/2013-04/msg00007.html>.
* doc/autoconf.texi (Automatic Remaking): Append semicolons
to rules that need empty commands.

diff --git a/doc/autoconf.texi b/doc/autoconf.texi
index f895e4797e6fed271e5477f59daa6c35a4d3380d..faf6d97d7516d757906970ed2dbfc97bf84abde8 100644 (file)
--- a/doc/autoconf.texi
+++ b/doc/autoconf.texi
@@ -3190,12 +3190,12 @@ $(srcdir)/configure: configure.ac aclocal.m4
         cd '$(srcdir)' && autoconf
 
 # autoheader might not change config.h.in, so touch a stamp file.
-$(srcdir)/config.h.in: stamp-h.in
+$(srcdir)/config.h.in: stamp-h.in ;
 $(srcdir)/stamp-h.in: configure.ac aclocal.m4
         cd '$(srcdir)' && autoheader
         echo timestamp > '$(srcdir)/stamp-h.in'
 
-config.h: stamp-h
+config.h: stamp-h ;
 stamp-h: config.h.in config.status
         ./config.status