PowerShell tries to crosscompile to aarch64 / armv7 when building on those platforms

[ayakael]

Prerequisites

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Steps to reproduce

Currently building a package for powershell on Alpine Linux. When building for aarch64, armv7 platform, build fails due to trying to crosscompile to those platforms. Cross-compilations should not occur on a platform that is building for itself, yet the build process tries to force that.

To reproduce, git clone https://gitlab.alpinelinux.org/ayakael/aports -b testing/powershell-arm and abuild -r in any Alpine environment eqal or greater to version 3.16 when in aports/testing/powershell directory.

Aport for build process is accessible here

Expected behavior

Build should not use CrossGen2 to build `powershell`

Actual behavior

Build tries to use CrossGen2 to build on the same platform.

Error details

/usr/lib/dotnet/sdk/6.0.108/Sdks/Microsoft.NET.Sdk/targets/Microsoft.NET.CrossGen.targets(463,5): error MSB6003: The specified task executable "/home/buildozer/.nuget/packages/microsoft.netcore.app.crossgen2.linux-musl-arm64/6.0.8/tools/crossgen2" could not be run. System.ComponentModel.Win32Exception (2): An error occurred trying to start process '/home/buildozer/.nuget/packages/microsoft.netcore.app.crossgen2.linux-musl-arm64/6.0.8/tools/crossgen2' with working directory '/builds/ayakael/aports/testing/powershell/src/PowerShell-7.2.6/src/powershell-unix'. No such file or directory [/builds/ayakael/aports/testing/powershell/src/PowerShell-7.2.6/src/powershell-unix/powershell-unix.csproj]

Full log accessible here

### Environment data

```powershell
Name                           Value
----                           -----
PSVersion                      7.2.6
PSEdition                      Core
GitCommitId                    7.2.6
OS                             Linux 5.4.157-1-pve #1 SMP PVE 5.4.157-1 (Mon, 29 Nov 2021 12:01:44 +0100)
Platform                       Unix
PSCompatibleVersions           {1.0, 2.0, 3.0, 4.0…}
PSRemotingProtocolVersion      2.3
SerializationVersion           1.1.0.1
WSManStackVersion              3.0

Visuals

No response

[ayakael]

The error was not a crosscompilation error, but rather having to do with dotnet/runtime#73908

Closing as fixed by disabling optimization on arm + arm64 platforms.