$(srcdir)/configure: configure.ac aclocal.m4
             cd '$(srcdir)' && autoconf
     
     # autoheader might not change config.h.in, so touch a stamp file.
     $(srcdir)/config.h.in: stamp-h.in
     $(srcdir)/stamp-h.in: configure.ac aclocal.m4
             cd '$(srcdir)' && autoheader
             echo timestamp > '$(srcdir)/stamp-h.in'
     
     config.h: stamp-h
     stamp-h: config.h.in config.status
             ./config.status
     
     Makefile: Makefile.in config.status
             ./config.status
     
     config.status: configure
             ./config.status --recheck