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* [musl] FYI: llvm-musl-hexagon toolchain build script v1
@ 2021-07-26  0:11 Rob Landley
  2021-07-26  0:14 ` Rich Felker
  2021-07-26  3:49 ` Patrick Oppenlander
  0 siblings, 2 replies; 4+ messages in thread
From: Rob Landley @ 2021-07-26  0:11 UTC (permalink / raw)
  To: musl

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Note the first three lines are the 3 git archives to clone into the current
directory. (llvm, linux, and qualcomm's musl-hexagon fork)

Loosely based on the
https://github.com/qemu/qemu/blob/master/tests/docker/dockerfiles/debian-hexagon-cross.docker.d/build-toolchain.sh
with a _LOT_ of simplification. Yes, it can still be slimmed down further,
working on it ala
https://lists.nongnu.org/archive/html/qemu-devel/2021-07/msg04610.html

I built a toybox binary which qemu-hexagon could run, and I built a
comet_defconfig vlinux which... doesn't seem to have a qemu-system-hexagon board
emulation yet? Hmmm...

Their musl hexagon branch is a couple dozen patches on top of a commit from
January of this year. Should rebase reasonnably to current without too much effort.

Rob

P.S. This chip is in every Android phone/tablet with a qualcomm chipset. Linux
was ported to it in 2010, which I know about because I worked on it
(http://landley.net/notes-2012.html#24-02-2012) but despite the hardware's
ubiquity it hasn't been particularly hobbyist accessible before now, but with
support finally going into QEMU...

[-- Attachment #2: script.sh --]
[-- Type: application/x-shellscript, Size: 2327 bytes --]

^ permalink raw reply	[flat|nested] 4+ messages in thread

* Re: [musl] FYI: llvm-musl-hexagon toolchain build script v1
  2021-07-26  0:11 [musl] FYI: llvm-musl-hexagon toolchain build script v1 Rob Landley
@ 2021-07-26  0:14 ` Rich Felker
  2021-07-26  0:49   ` Rob Landley
  2021-07-26  3:49 ` Patrick Oppenlander
  1 sibling, 1 reply; 4+ messages in thread
From: Rich Felker @ 2021-07-26  0:14 UTC (permalink / raw)
  To: Rob Landley; +Cc: musl

On Sun, Jul 25, 2021 at 07:11:43PM -0500, Rob Landley wrote:
> Note the first three lines are the 3 git archives to clone into the current
> directory. (llvm, linux, and qualcomm's musl-hexagon fork)
> 
> Loosely based on the
> https://github.com/qemu/qemu/blob/master/tests/docker/dockerfiles/debian-hexagon-cross.docker.d/build-toolchain.sh
> with a _LOT_ of simplification. Yes, it can still be slimmed down further,
> working on it ala
> https://lists.nongnu.org/archive/html/qemu-devel/2021-07/msg04610.html
> 
> I built a toybox binary which qemu-hexagon could run, and I built a
> comet_defconfig vlinux which... doesn't seem to have a qemu-system-hexagon board
> emulation yet? Hmmm...
> 
> Their musl hexagon branch is a couple dozen patches on top of a commit from
> January of this year. Should rebase reasonnably to current without too much effort.

Yes, it was proposed here a while back after a long time of being
something done independently that we hadn't seen. I need to look back
at the thread to determine where things are with getting it
upstreamable. My lack of tooling to build and test it is partly a
blocker, so if you're willing to help with that side of things it'd be
great.

Rich

^ permalink raw reply	[flat|nested] 4+ messages in thread

* Re: [musl] FYI: llvm-musl-hexagon toolchain build script v1
  2021-07-26  0:14 ` Rich Felker
@ 2021-07-26  0:49   ` Rob Landley
  0 siblings, 0 replies; 4+ messages in thread
From: Rob Landley @ 2021-07-26  0:49 UTC (permalink / raw)
  To: Rich Felker; +Cc: musl, Taylor Simpson



On 7/25/21 7:14 PM, Rich Felker wrote:
> On Sun, Jul 25, 2021 at 07:11:43PM -0500, Rob Landley wrote:
>> Note the first three lines are the 3 git archives to clone into the current
>> directory. (llvm, linux, and qualcomm's musl-hexagon fork)
>> 
>> Loosely based on the
>> https://github.com/qemu/qemu/blob/master/tests/docker/dockerfiles/debian-hexagon-cross.docker.d/build-toolchain.sh
>> with a _LOT_ of simplification. Yes, it can still be slimmed down further,
>> working on it ala
>> https://lists.nongnu.org/archive/html/qemu-devel/2021-07/msg04610.html
>> 
>> I built a toybox binary which qemu-hexagon could run, and I built a
>> comet_defconfig vlinux which... doesn't seem to have a qemu-system-hexagon board
>> emulation yet? Hmmm...
>> 
>> Their musl hexagon branch is a couple dozen patches on top of a commit from
>> January of this year. Should rebase reasonnably to current without too much effort.
> 
> Yes, it was proposed here a while back after a long time of being
> something done independently that we hadn't seen. I need to look back
> at the thread to determine where things are with getting it
> upstreamable. My lack of tooling to build and test it is partly a
> blocker, so if you're willing to help with that side of things it'd be
> great.

Happy to. The toolchain that built Worked For Me with stock-ish devuan. (Using
the cmake/ninja from the repo, nothing special.) According to the discussion
thread I SHOULD be able to remove most of the compiler flags and micromanaging
options, it's just slow to iterate builds taking a thing or two out at a time
and retesting.

QEMU hexagon application emulation is there and working now in vanilla (git
cloned qemu, did the "populate your darn subrepos" invocation, and then
./configure and make.) I haven't found qemu system emulation yet but presumably
there's something in the works. (Their kernel header build copied their full
kernel build context, and they're using comet_defconfig which is at least the
same _name_ as those test boards from 2010. So not exactly a rapidly moving
target on that side of things. :)

Rob

^ permalink raw reply	[flat|nested] 4+ messages in thread

* Re: [musl] FYI: llvm-musl-hexagon toolchain build script v1
  2021-07-26  0:11 [musl] FYI: llvm-musl-hexagon toolchain build script v1 Rob Landley
  2021-07-26  0:14 ` Rich Felker
@ 2021-07-26  3:49 ` Patrick Oppenlander
  1 sibling, 0 replies; 4+ messages in thread
From: Patrick Oppenlander @ 2021-07-26  3:49 UTC (permalink / raw)
  To: musl

On Mon, Jul 26, 2021 at 9:54 AM Rob Landley <rob@landley.net> wrote:
>
> Note the first three lines are the 3 git archives to clone into the current
> directory. (llvm, linux, and qualcomm's musl-hexagon fork)
>
> Loosely based on the
> https://github.com/qemu/qemu/blob/master/tests/docker/dockerfiles/debian-hexagon-cross.docker.d/build-toolchain.sh
> with a _LOT_ of simplification. Yes, it can still be slimmed down further,
> working on it ala
> https://lists.nongnu.org/archive/html/qemu-devel/2021-07/msg04610.html
>

Hi Rob,

FYI I have a fork of musl-cross-make with clang support here:

https://github.com/apexrtos/musl-cross-make/tree/clang

The bit with all the cmake cra^H^H^Hmagic is here:

https://github.com/apexrtos/musl-cross-make/blob/clang/litecross/Makefile.clang

Looks like you've done a better job of minimising flags than me (cmake
always gives me a headache). If it's OK with you I'd like to go
through your flags and see if I can tidy mine up a bit.

Patrick

^ permalink raw reply	[flat|nested] 4+ messages in thread

end of thread, other threads:[~2021-07-26  3:50 UTC | newest]

Thread overview: 4+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2021-07-26  0:11 [musl] FYI: llvm-musl-hexagon toolchain build script v1 Rob Landley
2021-07-26  0:14 ` Rich Felker
2021-07-26  0:49   ` Rob Landley
2021-07-26  3:49 ` Patrick Oppenlander

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