Gnu Make

[Jerry Feldman]

I have a couple of gnumake questions. 
First, is there a book on gnumake (similar to O'Reilly's excelent book on
make)? 

The other question is specific:
The construct below, $$@.o (Dynamic Dependency) works very nicely with the
Unix make, but not with the gnumake. I have not spent much time resolving
the problem or checking the online archives since it is a very low
priority for me at the moment. 
 ${PPROGS}: $$@.o

Jerry Feldman <gaf at blu.org>
Boston Linux and Unix
http://www.blu.org

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