From: Skip Tavakkolian <skip.tavakkolian@gmail.com>
To: Fans of the OS Plan 9 from Bell Labs <9fans@9fans.net>
Subject: Re: [9fans] Cross-compiling Plan 9
Date: Mon, 7 Jul 2014 11:21:23 -0700 [thread overview]
Message-ID: <CAJSxfmJqqX=Le=UjVHjFyG0g5Mwk7ih8Zq0qMhNOXyW=BMKoGA@mail.gmail.com> (raw)
In-Reply-To: <000F4E23-C3D9-481E-AF1F-48049B01E168@fb.com>
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this is an interesting exercise; however, it is much harder than it needs
to be. perhaps you have other reasons for doing it the hard way.
i posit that bringing up plan9 on qemu and compiling /sys/src is faster
than compiling on macos: kencc+p9p+cross compile plan9 and bring up plan9
on qemu. i would be happy to be proven wrong.
On Mon, Jul 7, 2014 at 10:41 AM, Yoann Padioleau <pad@fb.com> wrote:
> Hi,
>
> I was able to cross compile Plan9 from MacOS which is probably quite
> similar
> to cross compiling from Linux.
>
> The first thing was to compile the plan9 C compilers
> on MacOS. I used https://code.google.com/p/ken-cc/ because this fork
> of the Plan9 C compilers are easier to compile on non-plan9 OSes.
>
> Then I installed plan9port which contained a few utilities that are used
> when compiling the plan9 kernel (/bin/rc, /bin/mk).
>
> Then I setup a few symlinks at the root e.g.
>
> /lib -> /home/pad/plan9/root/lib
> /386 -> /home/pad/plan9/root/386
> /sys -> /home/pad/plan9/sys
>
> Finally I have a env.sh that I source that contains important
> environment variables:
> export KENCC=/home/pad/kencc
> # need to modify plan9/src/cmd/mk/shell.c and put rcshell as default shell
> export PLAN9=/usr/local/plan9
>
> export PATH=$PLAN9/bin:$KENCC/bin:$PATH
>
> #for 8._cp to be found and called
> PATH=$PATH:.
>
> export objtype=386
> #export objtype=arm
> export cputype=386
>
> Then I did a few modifications to plan9 Labs and was able to compile and
> run everything
> under qemu.
>
> My forks:
> https://github.com/aryx/fork-kencc
> https://github.com/aryx/fork-plan9
>
>
> On Jul 5, 2014, at 7:02 AM, Charles Forsyth <charles.forsyth@gmail.com>
> wrote:
>
>
> On 5 July 2014 14:13, Aleksandar Kuktin <akuktin@gmail.com> wrote:
>
>>
>> Are there any pointers or short instructions or a HOWTO or something
>> similar on the art of cross-compiling Plan 9 from Linux?
>>
>
> It would be easier to compile using 9vx under Linux, or a virtual plan 9
> machine in qemu under Linux.
> It is possible to cross-compile directly, but I've only built and used
> that environment twice myself
> (once for Solaris, once for Linux), and it isn't any longer in any
> distributable shape. It might reappear
> as a side effect of some work on the compiler suite. It's similar to the
> way Inferno's kernel is cross
> compiled using the Plan 9 compilers hosted by some other OS, but needs a
> few special twists to
> deal with the Plan 9 source tree.
>
>
>
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next prev parent reply other threads:[~2014-07-07 18:21 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-07-05 13:13 Aleksandar Kuktin
2014-07-05 13:22 ` Jacob Todd
2014-07-05 14:02 ` Charles Forsyth
2014-07-07 17:41 ` Yoann Padioleau
2014-07-07 18:21 ` Skip Tavakkolian [this message]
2014-07-07 18:33 ` Charles Forsyth
2014-07-07 18:34 ` Charles Forsyth
2014-07-07 18:47 ` Yoann Padioleau
2014-07-07 19:51 ` Charles Forsyth
2014-07-08 0:10 ` Aleksandar Kuktin
2014-07-09 0:10 ` kokamoto
2014-07-09 7:24 ` Charles Forsyth
2014-07-10 2:02 ` kokamoto
2014-07-13 19:11 ` Aleksandar Kuktin
2014-07-14 22:19 ` David du Colombier
2014-07-14 22:31 ` Yoann Padioleau
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