1 TXT = exim.txt

     2 PDF = ${TXT:.txt=.pdf}

     3 HTML = ${TXT:.txt=.html}

     4 

     5 html exim.html:	${TXT}

     6 		asciidoc $<

     7 

     8 pdf exim.pdf:	${TXT}

     9 		a2x $<

    10 

    11 clean:		; rm ${PDF} ${HTML}