Errors cross compile to windows 64

[tiaguinho]

I'm trying cross compile from linux to windows 64 and the following error has occurred

runtime/cgo
gcc: error: unrecognized command line option ‘-mthreads’

Any ideias?

[mattn]

Are you using mingw64 C compiler on linux?

[tiaguinho]

I wasn't.
But after some research I found a page in stackoverflow so i try.
First install this two packages

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

After that I use this command to compile

GOOS=windows GOARCH=386 CGO_ENABLED=1 CXX_FOR_TARGET=i686-w64-mingw32-g++ CC_FOR_TARGET=i686-w64-mingw32-gcc go build

This works for me.

[x1unix]

@tiaguinho you can build your app in go-mingw Docker container which contains all necessary MinGW deps].

[williambrode]

Anyone know how to fix this? @tiaguinho solution doesn't seem to work (I'm guessing that's why it has so many downvotes). Building in the go-mingw docker container works but is extremely slow. Would like to be able to build locally.

[x1unix]

@williambrode mount your GOPATH (or use Docker volume) to keep Go build cache.

See https://github.com/x1unix/docker-go-mingw#go-build-cache

[rittneje]

@williambrode Should be something like this:

sudo apt-get install gcc-mingw-w64
GOOS=windows GOARCH=amd64 CGO_ENABLED=1 CC=x86_64-w64-mingw32-gcc go build ...

Be sure to set CC, not CXX_FOR_TARGET/CC_FOR_TARGET. Those two are only relevant when building the Go compiler from scratch.

[mateors]

@rittneje thank you very much, its worked for me, i am using linux ubuntu.

first installed the package then compiled for windows as follows.

sudo apt-get install gcc-mingw-w64
GOOS=windows GOARCH=amd64 CGO_ENABLED=1 CC=x86_64-w64-mingw32-gcc go build 

[elgs]

@rittneje this works thanks! But it doesn't seem to work for GOARCH=arm64.

[navaneeth-dev]

Works on amd64. But can anyone tell me what is the difference between gcc-mingw-w64 and mingw-w64 package in debian

[x1unix]

@navaneeth-dev mingw-w64 is a metapackage that includes gcc-mingw-w64, which is a C compiler.

See https://packages.debian.org/buster/mingw-w64