Cross compilation fails

[Frankofoedu]

Description

I am trying to build using the xgo docker image. When I run the build command wails build -x darwin/amd64 without the -verbose flag, the app shows it built successfully. After setting the verbose flag, I noticed a few errors on the last few lines before it finished

go: downloading github.com/nfnt/resize v0.0.0-20180221191011-83c6a9932646
go: downloading github.com/jinzhu/now v1.1.1
/go/pkg/mod/github.com/wailsapp/wails@v1.8.0/runtime/window.go:9:2: golang.org/x/text@v0.3.0: stream error: stream ID 17; INTERNAL_ERROR
/go/pkg/mod/github.com/wailsapp/wails@v1.8.0/runtime/window.go:10:2: golang.org/x/text@v0.3.0: stream error: stream ID 17; INTERNAL_ERROR
/go/pkg/mod/github.com/wailsapp/wails@v1.8.0/runtime/window.go:11:2: golang.org/x/text@v0.3.0: stream error: stream ID 17; INTERNAL_ERROR
/go/pkg/mod/github.com/wailsapp/wails@v1.8.0/runtime/window.go:12:2: golang.org/x/text@v0.3.0: stream error: stream ID 17; INTERNAL_ERROR
/go/pkg/mod/github.com/wailsapp/wails@v1.8.0/runtime/window.go:13:2: golang.org/x/text@v0.3.0: stream error: stream ID 17; INTERNAL_ERROR
Cleaning up build environment...
Awesome! Project 'myapp' built!

I have the following packages in my project

    github.com/BurntSushi/xgb v0.0.0-20200324125942-20f126ea2843 // indirect
github.com/dgrijalva/jwt-go v3.2.0+incompatible
github.com/gen2brain/shm v0.0.0-20200228170931-49f9650110c5 // indirect
github.com/kbinani/screenshot v0.0.0-20191211154542-3a185f1ce18f
github.com/leaanthony/mewn v0.10.7
github.com/lxn/win v0.0.0-20191128105842-2da648fda5b4 // indirect
github.com/pkg/errors v0.9.1
github.com/robotn/gohook v0.30.3
github.com/wailsapp/wails v1.8.0
gorm.io/driver/sqlite v1.1.3
gorm.io/gorm v1.20.2

The build folder is always empty.

To Reproduce
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4. See error

Expected behaviour
A clear and concise description of what you expected to happen.

Screenshots
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System Details

Name	Value
Wails Version	v1.8.0
Go Version	go1.15
Platform	windows
Arch	amd64
GO111MODULE	(Not Set)
GCC	9.2.0
Npm	6.14.5
Node	v12.18.2

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Additional context

If I run the same build command for a new wails project, it compiles it successfully to macos version

• This issue is for Windows and I have read the Windows Developer Guide

[leaanthony]

I'll check on my machine bit stream errors suggest transient connection errors

[Frankofoedu]

I'll check on my machine bit stream errors suggest transient connection errors

So I changed my internet provider and retried it. The build now shoes a different error

[Frankofoedu]

@leaanthony @tmclane Hello, please can you help with this?

The build keeps exiting at the linker command error. No file is produced in the build directory.

I am on a windows 10 machine cross-compiling to macos

[leaanthony]

Hi. Sorry for the delay in getting back to you.

This came up before: #410 - Added a question there.

[Frankofoedu]

I think i have somehow isolated the problem. So if I have my code structured this way, it will run.

func GetTime() time.Time {
	return time.Now()
}
func main() {

  js := mewn.String("./frontend/dist/app.js")
  css := mewn.String("./frontend/dist/app.css") 

  app := wails.CreateApp(&wails.AppConfig{
    Width:  1024,
    Height: 768,
    Title:  "todo",
    JS:     js,
    CSS:    css,
    Colour: "#131313",
  })

  app.Bind(GetTime)
  app.Run()
}

Once I move the GetTime function to a different file in a different package folder, I get the linker error.

[Frankofoedu]

I think i have somehow isolated the problem. So if I have my code structured this way, it will run.

func GetTime() time.Time {
	return time.Now()
}
func main() {

  js := mewn.String("./frontend/dist/app.js")
  css := mewn.String("./frontend/dist/app.css") 

  app := wails.CreateApp(&wails.AppConfig{
    Width:  1024,
    Height: 768,
    Title:  "todo",
    JS:     js,
    CSS:    css,
    Colour: "#131313",
  })

  app.Bind(GetTime)
  app.Run()
}

Once I move the GetTime function to a different file in a different package folder, I get the linker error.

I can't reproduce this behaviour in a new repository. I will still investigate further

[Frankofoedu]

@tmclane @leaanthony Helo, Please can I add you to my repo to help debug the linker issue?

[leaanthony]

Sure

[leaanthony]

Doing a brief google search, I found this: golang/go#33968
It looks like it's an issue with tools external to Wails so I'm not going to be able to fix this for you.

Edit: This has more info: golang/go#36025 with a potential fix. Try this: CGO_CFLAGS=-mmacosx-version-min=10.12 wails build

[Frankofoedu]

Doing a brief google search, I found this: golang/go#33968
It looks like it's an issue with tools external to Wails so I'm not going to be able to fix this for you.

Edit: This has more info: golang/go#36025 with a potential fix. Try this: CGO_CFLAGS=-mmacosx-version-min=10.12 wails build

I don't know how to pass that flag into the docker container for cross compiling.

I isolated my problem to a specific package. https://github.com/kbinani/screenshot

It depends on a different package (https://github.com/BurntSushi/xgbutil) that requires some files to build which aren't present in the docker image.

I ended up getting a Mac to compile my project.

Thanks for helping