Compiling darwin/amd64: syscall_syscallX redeclared in this block

[onetwopunch]

It seems there may be an issue cross compiling from linux/amd64 to Mac (darwin/amd64).

Go version:

$ go version
go version go1.15 linux/amd64

Error:

$ gox -osarch="darwin/amd64" -output "build/{{.OS}}_{{.Arch}}/myapp" .
Number of parallel builds: 3

-->    darwin/amd64: github.com/onetwopunch/myapp

1 errors occurred:
--> darwin/amd64 error: exit status 2
Stderr: # runtime
/usr/local/go/src/runtime/sys_darwin_64.go:15:6: syscall_syscallX redeclared in this block
        previous declaration at /usr/local/go/src/runtime/sys_darwin.go:73:60
/usr/local/go/src/runtime/sys_darwin_64.go:21:6: syscallX redeclared in this block
        previous declaration at /usr/local/go/src/runtime/sys_darwin.go:79:6

[marcosnils]

Came across this the other day. You just need to remove your /usr/local/go folder and re-install go. This usually happens when "upgrading" go and un-taring the new version on top of the previous one