[LIP] Implicit make rules

Can I make an implicit suffix rule, where the source and destination are
in different directories?

Problem:
I am writing documentation in markdown syntax. I want the makefile to
generate html documentation to a subdirectory called html/. I have
written the following Makefile.

===============================
MKD=Markdown.pl

DOCS=html/config.html

.SUFFIXES:

.SUFFIXES: .html .mkd

.mkd.html:
        echo $@
        cat html/header.html > html/$<.html
        $(MKD) $< >> html/$<.html
        cat html/footer.html >> html/$<.html

all: $(DOCS)
===============================

This doesnt work unless I remove the "html/" from the $DOCS variable. Of
course in this case, I land up having the html files in the same
directory as the source, and also since the fresh html files are always
made in a different directory this rule will run regardless of whether
the source is updated or not.

Any ideas?

Thanks,
 Sandip

-- 
Sandip Bhattacharya  *    Puroga Technologies   *     sandip-/[email protected]
Work: http://www.puroga.com  *   Home/Blog: http://www.sandipb.net/blog

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