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Date: Wed, 20 May 2009 21:57:02 +0200
From: Polytropon <freebsd@edvax.de>
To: francis keyes <fkeymo@gmail.com>
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Cc: Polytropon <freebsd@edvax.de>, Chuck Robey <chuckr@telenix.org>,
	freebsd-questions@freebsd.org
Subject: Re: compiling FreeBSD date on Linux
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On Wed, 20 May 2009 14:45:59 -0300, francis keyes <fkeymo@gmail.com> wrote:
> Hmm... the date program looks pretty simple but I don't understand the
> Makfile:
> 
> #    @(#)Makefile    8.1 (Berkeley) 5/31/93
> # $FreeBSD: src/bin/date/Makefile,v 1.11.30.1 2009/04/15 03:14:26 kensmith
> Exp $
> 
> PROG=    date

The final program name.



> SRCS=    date.c netdate.c vary.c

The source files it depends on.



> DPADD=    ${LIBUTIL}

Needs to compile what ${LIBUTIL} point to, usually the
libutil directory in the src/ tree.



> LDADD=    -lutil

Additional info for the linker: link against libutil.
This indicates that libutil is a build dependency for
the date program.



> .include <bsd.prog.mk>

Definitions, variables and "what to do" is there.



> Would it be possible to compile this without a makefile?

That was my initial idea. The date program seems to depend
on two things: First the kernel interface which would be
something similar in Linux, and the libutil library, which
is maybe present on Linux, too.




-- 
Polytropon
>From Magdeburg, Germany
Happy FreeBSD user since 4.0
Andra moi ennepe, Mousa, ...