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Re: makefile syntax
- To: "Jan-Friedrich Mutter" <jmutter@bigfoot.de>
- Subject: Re: makefile syntax
- From: Mumit Khan <khan@xraylith.wisc.EDU>
- Date: Wed, 23 Jun 1999 18:31:14 -0500
- cc: cygwin@sourceware.cygnus.com
"Jan-Friedrich Mutter" <jmutter@bigfoot.de> writes:
> Hi,
>
> I have problems with the make/Makefile syntax. Maybe someone could help me.
>
> My Makefile looks like that:
> ###
> all: someclass.class
>
> %.class:
> echo $< ;
> ###
>
> $< should contain 'someclass.class', shouldn't it ? But unfortunately it is
> empty.
> Did I take the wrong variable name, which one should I take ?
>
Please read the make documentation on pattern rules, specifically the
section on automatic variables.
$ info make "Pattern Rules" Automatic
You're confusing targets vs dependencies (and perhaps the old suffix
rules syntax vs gnu make's). Also, I'm assuming that you know about
the required TAB character before the echo command.
all: someclass.class
%.class:
echo $@ ;
should echo what you expect.
Please follow up in one of the gnu newsgroups, where general questions
about make is more appropriate.
Regards,
Mumit
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