Android builds fail on Apple M1

[changkun]

Describe the bug:

The hello world example cannot be built for android on Apple M1 Macs:

package main

import (
	"fyne.io/fyne/v2/app"
	"fyne.io/fyne/v2/widget"
)

func main() {
	app := app.New()

	w := app.NewWindow("Hello")
	w.SetContent(widget.NewLabel("Hello Fyne!"))

	w.ShowAndRun()
}

To Reproduce:

Building android will result in a direct crash in the cmd/fyne:

$ fyne package -os android -appID com.example.x
panic: unsupported GOARCH: arm64

goroutine 1 [running]:
fyne.io/fyne/v2/cmd/fyne/internal/mobile.archNDK(...)
        /Users/changkun/dev/changkun.de/fyne/cmd/fyne/internal/mobile/env.go:330
fyne.io/fyne/v2/cmd/fyne/internal/mobile.(*ndkToolchain).Path(0x1400017f658, {0x102be02a9, 0x102be44ae}, {0x102be199c, 0x0})
        /Users/changkun/dev/changkun.de/fyne/cmd/fyne/internal/mobile/env.go:358 +0x64
fyne.io/fyne/v2/cmd/fyne/internal/mobile.envInit()
        /Users/changkun/dev/changkun.de/fyne/cmd/fyne/internal/mobile/env.go:141 +0x460
fyne.io/fyne/v2/cmd/fyne/internal/mobile.buildEnvInit()
        /Users/changkun/dev/changkun.de/fyne/cmd/fyne/internal/mobile/env.go:79 +0x250
fyne.io/fyne/v2/cmd/fyne/internal/mobile.runBuildImpl(0x10300cca0)
        /Users/changkun/dev/changkun.de/fyne/cmd/fyne/internal/mobile/build.go:93 +0x3c
fyne.io/fyne/v2/cmd/fyne/internal/mobile.runBuild(...)
        /Users/changkun/dev/changkun.de/fyne/cmd/fyne/internal/mobile/build.go:74
fyne.io/fyne/v2/cmd/fyne/internal/mobile.RunNewBuild({0x16d5ab545, 0x14000070120}, {0x16d5ab554, 0x102bd9ea4}, {0x140002c0140, 0xd}, {0x102fbf140, 0x7}, {0x102be14bf, 0x102a839bc}, ...)
        /Users/changkun/dev/changkun.de/fyne/cmd/fyne/internal/mobile/build.go:282 +0x244
fyne.io/fyne/v2/cmd/fyne/internal/commands.(*Packager).packageAndroid(...)
        /Users/changkun/dev/changkun.de/fyne/cmd/fyne/internal/commands/package-mobile.go:19
fyne.io/fyne/v2/cmd/fyne/internal/commands.(*Packager).doPackage(0x14000298b60)
        /Users/changkun/dev/changkun.de/fyne/cmd/fyne/internal/commands/package.go:228 +0x49c
fyne.io/fyne/v2/cmd/fyne/internal/commands.(*Packager).Package(0x14000298b60)
        /Users/changkun/dev/changkun.de/fyne/cmd/fyne/internal/commands/package.go:169 +0x30
fyne.io/fyne/v2/cmd/fyne/internal/commands.Package.func1(0x140002fa000)
        /Users/changkun/dev/changkun.de/fyne/cmd/fyne/internal/commands/package.go:105 +0x24
github.com/urfave/cli/v2.(*Command).Run(0x140002a30e0, 0x1400028cd80)
        /Users/changkun/dev/changkun.de/fyne/vendor/github.com/urfave/cli/v2/command.go:163 +0x5a4
github.com/urfave/cli/v2.(*App).RunContext(0x1400029a680, {0x102d476d0, 0x140000240c8}, {0x140000201e0, 0x6, 0x6})
        /Users/changkun/dev/changkun.de/fyne/vendor/github.com/urfave/cli/v2/app.go:313 +0x618
github.com/urfave/cli/v2.(*App).Run(...)
        /Users/changkun/dev/changkun.de/fyne/vendor/github.com/urfave/cli/v2/app.go:224
main.main()
        /Users/changkun/dev/changkun.de/fyne/cmd/fyne/main.go:38 +0x23c

Device (please complete the following information):

• OS: macOS
• Version: 12.0 Beta (21A5506j)
• Go version: go version devel go1.18-9133245be7 Sat Sep 4 20:35:25 2021 +0000 darwin/arm64
• Fyne version: 2.1-develop

[andydotxyz]

I guess the same thing is true for linux computers trying to build from an arm64 platform?

[Jacalz]

I guess the same thing is true for linux computers trying to build from an arm64 platform?

I am not entirely sure that it is. The arm64 builds through fyne-cross are cross compiled from amd64, I think?

[andydotxyz]

Yes, fyne-cross android is built from amd64 - this issue is about building arm64 isn't it?

[andydotxyz]

Thanks, fixed on develop for darwin/arm64 specifically