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From: eric@osiris.UUCP (Eric Bergan)
Newsgroups: net.unix-wizards
Subject: What's wrong with this picture (makefile bug?)
Message-ID: <177@osiris.UUCP>
Date: Wed, 13-Mar-85 13:45:02 EST
Article-I.D.: osiris.177
Posted: Wed Mar 13 13:45:02 1985
Date-Received: Sat, 16-Mar-85 03:39:39 EST
Distribution: net
Organization: Johns Hopkins Hospital
Lines: 36


	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.

	If I change the makefile to:

	.SUFFIXES: .qc

	.qc.c:
		cat $< >mtest.c

	mtest: mtest.o
		cc -o mtest mtest.o

	mtest.o: mtest.c

and the only file is "mtest.qc", and I do a "make mtest", it works fine.
This happens under both 4.2 and System V. Has anyone gotten user defined
suffixes to work correctly?

-- 

					eric
					...!seismo!umcp-cs!aplvax!osiris!eric