Are there any tools to automate cross-compiling Go code for multiple OSes

1. go-crosscompile:
- This is a helper script created by Dave Cheney that simplifies the cross-compilation process for Go.
- It provides a set of commands to build Go toolchains for various target platforms.
- You can find the repository here: https://github.com/davecheney/golang-crosscompile

2. gox:
- `gox` is a Go tool that can cross-compile Go programs for multiple platforms.
- It supports a wide range of operating systems and architectures, and can be easily integrated into your build process.
- You can install it using `go get github.com/mitchellh/gox`.

3. xgo:
- `xgo` is a Docker-based cross-compilation tool for Go.
- It handles the setup of the necessary cross-compilation toolchains and environments, making it easier to build binaries for various platforms.
- You can find the repository here: https://github.com/karalabe/xgo

4. goreleaser:
- `goreleaser` is a tool that helps you release Go projects to GitHub and other platforms.
- It includes cross-compilation capabilities, allowing you to build binaries for multiple operating systems and architectures.
- You can find the repository here: https://github.com/goreleaser/goreleaser

5. Makefile:
- You can also create a Makefile in your Go project to automate the cross-compilation process.
- The Makefile can use the `GOOS` and `GOARCH` environment variables to build binaries for different platforms.
- Here's an example Makefile:

makefile
   GOOS_TARGETS = linux darwin windows
   GOARCH_TARGETS = amd64 386 arm64

   all: $(foreach os,$(GOOS_TARGETS),$(foreach arch,$(GOARCH_TARGETS),build-$(os)-$(arch)))

   build-%:
   	GOOS=$(word 1,$(subst -, ,$*)) GOARCH=$(word 2,$(subst -, ,$*)) go build -o bin/$*/myapp
   

These tools can greatly simplify the process of cross-compiling Go code for multiple operating systems and architectures, making it easier to distribute your applications to a wider audience.