Powershell: add build for ARM platform (specifically Raspberry Pi Raspbian OS)

[mi-hol]

Enhance build process to provide a downloadable PowerShell executable for ARM platform, specifically the millions of Raspberry Pi devices running Raspbian OS. .Net core is already providing such a build
[Arm/CI] Add hardfp build to arm32_ci_script.sh #12577

[alanrenouf]

That's a shame, I was also looking at this, especially with docker being available for the raspberry pi +1 from me!

[CheshireCat44]

Given the number of people coming to Linux via the Raspberry pi, this looks like a win-win for the Pi and for Powershell.

[mms-]

I want this.

[hansze]

would be great to have by time dotnet core for debian ARM is available. Seems to be planned for Q1 2017

[JefferMC]

This would be great. I have some PowerShell scripts on a Windows box (that collect data from a network Gateway that doesn't have SNMP). I'd rather just copy over to my Pi than re-write in bash/perl or something else.

[dougransom]

i would be interested in powershell on raspberry pi.

[gitkalz]

Yes, PowerShell with ARM Support on Raspberry Pi would make great usecases such as low cost/power management station for HomeLabs. Please consider!! +1

[iSazonov]

Today CoreFX and CLI is still not ready for ARM on daily basis.

[tibmeister]

As soon as the ARM support for dotnet core is out I plan on testing a compile of this and seeing if it will work outta the box or not...

[joeyaiello]

This should "just work" for the .NET bits of PowerShell; the tricky part is getting the native PowerShell binaries to compile for arm32/arm64 out of GitHub.

[vors]

Dotnet core Raspberry Pi instructions https://github.com/dotnet/core/blob/master/samples/RaspberryPiInstructions.md

[Serkan-devel]

Maybe also package it as an Appimage so it can work on some Android devices when running a terminal app

[olleg]

Please release packages with support for ARM.

[stevedesmond-ca]

I can hopefully pick this up in the next week or two -- seems fairly straightforward if we follow the .NET Core convention to allow an arg like --rid=ubuntu.16.04-arm on the build script to override the default, for cross-compiling to other platforms/architectures.

[apetitjean]

Any update on the topic since .Net Core 2.0 is now available for ARM32? Has anyone give it a try?

[SteveL-MSFT]

The hard part is getting the native library to cross build for arm32. I'll give it a try, but I'm certainly no expert on this.

[stevedesmond-ca]

Build seems straightforward enough, let me know if you need a hand -- I should have time this week to get this working.

[SteveL-MSFT]

@stevedesmond-ca if you can get libpsl to build for arm32, I'll take care of the dotnet side. Thanks!

[apetitjean]

Great guys! I'm looking forward testing it when ready ;-) !

[whatevergeek]

i just tried building/publishing for linux-arm... publish is ok...
but when i run inside Raspbian, i get the following issue:

PowerShell v6.0.0-alpha.18-395-gd467d520a30403d561aaaf44498af141e78c57d9
Copyright (C) Microsoft Corporation. All rights reserved.

Unable to load DLL 'libpsl-native': The specified module or one of its dependencies could not be found.
 (Exception from HRESULT: 0x8007007E)
Segmentation fault

Any advice how to proceed from here?

[stevedesmond-ca]

This is what @SteveL-MSFT was talking about -- the native components need to be cross-compiled. I'll hopefully get a PR in for this today.

[whatevergeek]

thanks @stevedesmond-ca
i was thinking of using it in my demo tomorrow ... but no worries...
will share in another talk... once available :-)

[SteveL-MSFT]

Got it building, libpsl-native is loaded correctly, but after a pause a segmentation fault when the prompt should be showing up.

[SteveL-MSFT]

Opened corefx issue https://github.com/dotnet/corefx/issues/23660

[stevedesmond-ca]

Segfault issue is being tracked at dotnet/coreclr#13667

[SteveL-MSFT]

Issue was fixed in CoreCLR, but not in time for beta.7. Will see about getting a working build for beta.8

https://github.com/dotnet/coreclr/pull/13922

[mi-hol]

@SteveL-MSFT thanks for sharing the good news about 'getting a working build for beta.8'.
It seems we are only a few weeks away from achieving the goal of this request.
But unfortunately from my view, with very limitied visibility of what is going on behind the scenes, how can I as requestor trace the progress towards achiving the ultimate goal of this (now closed) request?

[stevedesmond-ca]

Is it worth getting nightly/CI builds set up for Linux on ARM?

[SteveL-MSFT]

I'm at Open Source Summit this week and I didn't bring my pi with me. Since the coreclr fix was merged, you could try picking up their nightly build along with building powershell for linux-arm as that change has been merged to our master branch. Otherwise, I'll work on this next week once I get back.

[apetitjean]

This is awesome! I'm looking forward playing with it on my Pi! J

2017-09-13 16:46 GMT+02:00 Steve Lee [e-mail]:

I'm at Open Source Summit this week and I didn't bring my pi with me.
Since the coreclr fix was merged, you could try picking up their nightly
build along with building powershell for linux-arm as that change has been
merged to our master branch. Otherwise, I'll work on this next week once I
get back.

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[SteveL-MSFT]

Added instructions on how to get this working https://github.com/PowerShell/PowerShell/pull/4882

[nikonthethird]

Issue was fixed in CoreCLR, but not in time for beta.7. Will see about getting a working build for beta.8

@SteveL-MSFT Is there a working build for beta.8?

[SteveL-MSFT]

@nikonthethird not until CoreCLR puts out a 2.0.x servicing build. We're not moving to CoreCLR 2.1.x for 6.0.0 release as it's not stable.

[DaleMitchell]

Unfortunately I do not have access to an Ubuntu machine to compile the binaries for Raspbian. Is someone kind enough to upload them here?

[markekraus]

@DaleMitchell You could always use Hyper-v on Windows 10 or any of the free VM tools for previous windows versions, download an Ubuntu ISO, and compiled the binaries in the VM.

[TravisEz13]

for compiling, I often just use docker, but it takes getting used to.

[SteveL-MSFT]

We're planning on moving to a preview of dotnetcore 2.0.x servicing release after which we should be able to start producing Pi packages hopefully for the release candidate