Cross Compilation(Linux->Win) error

[EnochTheWise]

• Robotgo version (or commit ref): current master
• Go version: go version go1.12.9 linux/amd64
• Gcc version: gcc (Debian 9.2.1-4) 9.2.1 20190821 / x86_64-w64-mingw32-gcc (GCC) 8.3-win32 20190709
• Operating system and bit: Debian bullseye/sid
• Resolution: console
• Can you reproduce the bug at Examples:
  • Yes (provide example code)
  • No
  • Not relevant
• Provide example code:

package main

import (
    "fmt"
    "os"
    "os/signal"
    "syscall"
    "time"
    "math/rand"
    "github.com/go-vgo/robotgo"
)

// SetupCloseHandler creates a 'listener' on a new goroutine which will notify the 
// program if it receives an interrupt from the OS. We then handle this by calling 
// our clean up procedure and exiting the program.
func SetupCloseHandler() {
    c := make(chan os.Signal, 2)
    signal.Notify(c, os.Interrupt, syscall.SIGTERM)
    go func() {
        <-c
        fmt.Println("\r- Ctrl+C pressed in Terminal")
        os.Exit(0)
    }()
}

func main() {
    // Setup our Ctrl+C handler
    SetupCloseHandler()

    fmt.Println("\r- Press Ctrl+C to interrupt")
    // Run our program...
    for {
        rand.Seed(time.Now().UnixNano())
        min := 120
        max := 480
        sleep_secs := rand.Intn(max - min + 1) + min

        fmt.Println("\r- Type key and sleep: ", sleep_secs, "sec's")
        robotgo.ActiveName("KWrite")
        robotgo.TypeString("Hello World")
        robotgo.KeyTap("space")
        time.Sleep(time.Duration(sleep_secs) * time.Second)
    }
}

• Log gist:

$ GOOS=windows GOARCH=amd64 go build -o sendkey.exe sendkey.go
# github.com/go-vgo/robotgo
../../github.com/go-vgo/robotgo/keycode.go:14:16: undefined: Map
../../github.com/go-vgo/robotgo/keycode.go:25:15: undefined: Map
../../github.com/go-vgo/robotgo/robotgo_mac_win.go:22:9: undefined: internalGetBounds
../../github.com/go-vgo/robotgo/robotgo_mac_win.go:31:12: undefined: cgetTitle
../../github.com/go-vgo/robotgo/robotgo_mac_win.go:45:2: undefined: internalActive

$ GOOS=windows GOARCH=amd64 CGO_ENABLED=1 CC=x86_64-w64-mingw32-gcc CXX=x86_64-w64-mingw32-g++ go build -o sendkey-amd64.exe sendkey.go
# github.com/go-vgo/robotgo/vendor/github.com/robotn/gohook
/usr/bin/x86_64-w64-mingw32-ld: $WORK/b042/_x003.o: in function `eb_port_create':
../../github.com/go-vgo/robotgo/vendor/github.com/robotn/gohook/event/../chan/eb_chan.h:382: undefined reference to `sched_yield'
/usr/bin/x86_64-w64-mingw32-ld: $WORK/b042/_x003.o: in function `eb_port_free':
../../github.com/go-vgo/robotgo/vendor/github.com/robotn/gohook/event/../chan/eb_chan.h:350: undefined reference to `sched_yield'
/usr/bin/x86_64-w64-mingw32-ld: ../../github.com/go-vgo/robotgo/vendor/github.com/robotn/gohook/event/../chan/eb_chan.h:341: undefined reference to `sched_yield'
/usr/bin/x86_64-w64-mingw32-ld: $WORK/b042/_x003.o: in function `cleanup_ops':
../../github.com/go-vgo/robotgo/vendor/github.com/robotn/gohook/event/../chan/eb_chan.h:858: undefined reference to `sched_yield'
/usr/bin/x86_64-w64-mingw32-ld: ../../github.com/go-vgo/robotgo/vendor/github.com/robotn/gohook/event/../chan/eb_chan.h:858: undefined reference to `sched_yield'
/usr/bin/x86_64-w64-mingw32-ld: $WORK/b042/_x003.o:/home/john/work/go-lang/src/github.com/go-vgo/robotgo/vendor/github.com/robotn/gohook/event/../chan/eb_chan.h:643: more undefined references to `sched_yield' follow
collect2: error: ld returned 1 exit status

Description

...

[Ahmet]

i have same problem.

• Robotgo version (or commit ref): current master
• Go version: go version go1.12.9 darwin/amd64
• Gcc version: x86_64-w64-mingw32-gcc (GCC) 9.1.0
• Operating system and bit: MacOS Mojave 10.14.5
• Resolution: console

[Berkant İpek]

Same problem.

[Berkant İpek]

I may have fixed this in Go 1.13. At least it works when cross compiling from Linux to Windows.

env GOOS=windows \
       GOARCH=amd64 \
       CGO_ENABLED=1 \
       CC=x86_64-w64-mingw32-gcc-posix \
       CXX=x86_64-w64-mingw32-g++-posix \
       CGO_CFLAGS="`go env CGO_CFLAGS` -I/usr/local/x86_64-w64-mingw32/include" \
       CGO_LDFLAGS="`go env CGO_LDFLAGS` -L/usr/local/x86_64-w64-mingw32/lib -L/usr/local/x86_64-w64-mingw32/lib" \
       go build -x -trimpath -ldflags="-w -s -extldflags -static"

But first you have to install zlib from source.

https://wiki.openttd.org/Cross-compiling_for_Windows#zlib

[Evans]

Thanks for your feedback; I cannot answer every question because time is limited, other features and projects are being developing, and the computer equipment and environment configuration are different.

[Walker de Alencar]

hey guys, after some research and a lot of waste of time, finally is running for me.
Required:

sudo apt-get install gcc-multilib
sudo apt-get install gcc-mingw-w64

Created a file: winbuild.sh with following content:

#!/bin/bash
export GOOS=windows 
export GOARCH=386 
export CC=i686-w64-mingw32-gcc 
export CXX=i686-w64-mingw32-g++ 
export CGO_ENABLED=1
export CGO_CXXFLAGS="-static-libgcc -static-libstdc++ -Wl,-Bstatic -lstdc++ -lpthread -Wl,-Bdynamic"
go build -ldflags "-s -w -X main.version=$2" -o $3 -v -x $1

how to use:
$ ./winbuild.sh main.go 1.0.0 sendkey-i686.exe
or
$ ./winbuild.sh ./ 1.0.0 sendkey-i686.exe

Need to attach a zlib1.dll when you make zip or installer.

References:

• #143
• #235
• https://stackoverflow.com/questions/41566495/golang-how-to-cross-compile-on-linux-for-windows

I hope that help someone.