Go has native crosscompilation - you can
GOOS=windows GOARCH=386 go build -o x.exe
from a linux/amd64 host, and everything works, you get a windows/386 x.exe!
But godror has to use cgo to capitalize OCI, the Oracle supported connection library.
And cgo is not go.
So for cross-compilation, you have to have the proper cross-compiler on your host machine, which compiles to the target architecture. This is troublesome, but @karalabe helps us with github.com/karalabe/xgo, which utilizes Docker containers for this cross-compilation.
cd /tmp; go get github.com/karalabe/xgo
then
xgo --targets=linux/amd64,windows/amd64,darwin/amd64 github.com/godror/godror
produces
godror-linux-amd64
godror-windows-4.0-amd64.exe
godror-darwin-10.6-amd64
For details, see https://github.com/karalabe/xgo !
xgo uses docker, but you can make it use podman with this little shim:
#!/bin/sh
# $HOME/bin/docker
# or anything that's on your PATH
exec podman "$@"
and add “docker.io” to unqualified-search-registries in /etc/containers/registries.conf:
unqualified-search-registries = ["docker.io"]
Zig is an interesting project with an interesting tool: a clang C compiler with a lot of target host std libs included!
For example, see contrib/cross-compile.sh!