Makefile and .SUFFIXES
======================

For some  reasons I never tried  to use the .SUFFIXES  directive of the
make(1). I also thought that it is  a GNU extension which may not exist
in other make implementations.

But it  seems that it is  a common thing  (at leat the NetBSD  make has
this thing, too).

So I FINALLY have started to use this thing:

--------------------------
.SUFFIXES: .tex .dvi .pdf

.tex.dvi:
	latex $<
--------------------------

And so on...