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From: gdsd1@homxb.UUCP (M.LAI)
Newsgroups: net.unix-wizards
Subject: Re: What's wrong with this picture (makefile bug?)
Message-ID: <544@homxb.UUCP>
Date: Fri, 15-Mar-85 12:07:00 EST
Article-I.D.: homxb.544
Posted: Fri Mar 15 12:07:00 1985
Date-Received: Sat, 16-Mar-85 04:47:06 EST
Organization: AT&T Bell Labs, Holmdel NJ
Lines: 35

[munch munch]


>		I seem to have run into a strange "make" problem involving user
>	defined suffixes. I started with a makefile:
>	
>		.SUFFIXES: .qc
>	
>		.qc.c:
>			cat $< >mtest.c
>	
>		mtest: mtest.o
>			cc -o mtest mtest.o
>	
>	and a file "mtest.qc". If I say "make mtest" - it comes back "don't know
>	how to make mtest.o". However if I do "make mtest.c" and then "make mtest"
>	it works fine.

Try:

.SUFFIXES: .qc

.qc:
	cat $< > $(?:.qc=.c)
	$(CC) $(CFLAGS) -o $@ $(?:.qc=.c)
	@rm $(?:.qc=.c)

and you won't need to specify any dependencies.  Just:

	$ make mtest
	cat mtest.qc > mtest.c
	cc -O -o mtest mtest.c

Neal Nuckolls
..!houxa!homxb!gdsd1