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Date:      Thu, 18 Jan 2001 17:34:50 -0700
From:      Warner Losh <imp@harmony.village.org>
To:        Micke Josefsson <mj@isy.liu.se>
Cc:        freebsd-hackers@FreeBSD.ORG
Subject:   Re: Can I do a make world only for PentiumPro? 
Message-ID:  <200101190034.f0J0Yos49414@harmony.village.org>
In-Reply-To: Your message of "Thu, 18 Jan 2001 09:15:16 %2B0100." <XFMail.010118091516.mj@isy.liu.se> 
References:  <XFMail.010118091516.mj@isy.liu.se>  

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In message <XFMail.010118091516.mj@isy.liu.se> Micke Josefsson writes:
: Is it possible to use my PentiumPro machine to do a 'make buildworld' for a
: target machine that only is a 486? When compiling the kernel I can select to
: omit 386/486-thingies and optimise the binaries for 686. Can I do the same for
: the 'world'-target? 

Yes.  I do this all the time.  Except I have an Pentium II 500MHz
box.  I do a make buildworld there and an installworld on the 486
box.  I have to make sure that the /usr/obj and /usr/src trees are the
same between the two (mounted in the same place, same sym links, etc)
and that my /etc/make.conf is the same.  Otherwise it just works.  You
have to have /usr/obj writable by root, so it can't be read only :-(,
but that's about the only snag I can think of.

Of course I have no PPro or Pentium II specific optimizations in my
tree.  They don't seem to help much anyway.

Warner


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