Cross compiling from Windows to other OSs

Question

I read this and this about this activity, and the action mentioned as:

% env GOOS=darwin GOARCH=386 go build hello.go

// or

% env GOOS=linux GOARCH=arm GOARM=7 go build hello.go

// and so on

But in Windows there is no command named env, I got the below:

'env' is not recognized as an internal or external command,
operable program or batch file.

score 1 · Answer 1 · answered Jun 05 '20 at 22:22

1

On windows powershell you should be able to do:

$env:GOOS = "linux"
$env:GOARCH = "arm"
$env:GOARM = "7"
go build hello.go

answered Jun 05 '20 at 22:22

dave

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Thanks, i did the below:`$env:GOOS = "darwin" $env:GOARCH = "amd64" go build grouping.go` and got a new file EITHOUT extension – Hasan A Yousef Jun 05 '20 at 22:32
add `-o grouping.exe` – dave Jun 05 '20 at 22:34
mm `.exe` is not this only for Windows ? – Hasan A Yousef Jun 05 '20 at 22:34
you can put whatever extension you want, I was just showing an example – dave Jun 05 '20 at 22:36
I wrote `go build grouping.go -o test.dmg` and got `can't load package: named files must be .go files: -o` – Hasan A Yousef Jun 05 '20 at 22:37
1

oh sorry, when you do `-o` the order matters for some reason, you have to do `go build -o test.dmg grouping.go` – dave Jun 05 '20 at 22:41
Deeply appreciated, do you have an idea how to make `.dll` dynamic library? – Hasan A Yousef Jun 05 '20 at 22:43
1

not sure, never done it, maybe this helps? https://stackoverflow.com/questions/40573401/building-a-dll-with-go-1-7 – dave Jun 05 '20 at 22:45
How to do it from `Mac` and compile to `Windows` I tried the below: `hasan@Hasans-MacBook-Air mod % $env:GOOS = "windows" zsh: command not found: :GOOS hasan@Hasans-MacBook-Air mod % env GOOS = "windows" env: GOOS: No such file or directory` – Hasan A Yousef Jun 06 '20 at 20:24

Hasan A Yousef · Accepted Answer · 2020-08-22T10:37:24.277

To check supported compilation tools: go tool dist list Cross compiling not working with cgo, i.e. not working with any file has import "C"

At Powershell

# For ARM
$env:GOOS = "linux" 
$env:GOARCH = "arm" 
$env:GOARM = "7" 
go build -o main main.go
# For darwin
$env:GOOS = "darwin" 
$env:GOARCH = "amd64" 
go build -o main.dmg main.go
# same for others
$env:GOOS = "windows" 
$env:GOARCH = "amd64" 
go build -o main.exe main.go

At CMD Command Prompt:

set GOOS=darwin
set GOARCH=amd64
go build -o main.dmg main.go

To do it in Linux or Mac and compiling to Win

GOOS=windows GOARCH=amd64 go build -o main.exe main.go

Cross compiling will silently rebuild most of standard library, and for this reason will be quite slow. To speed-up the process, you can install all the standard packages required for cross compiling on your system, for example to install at Linux/Mac the cross compiling requirements for windows-amd64 use:

GOOS=windows GOARCH=amd64 go install

Similar for any other OS you need to cross compile for it at Windows

Cross compiling from Windows to other OSs

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