Go + GoLand calling function in other file - go

Question

Directory layout:
~ cd $GOPATH
~ tree src/simple
src/simple
└── main
├── main.go
└── other.go
main.go:
package main
import "fmt"
func main() {
fmt.Println("This is in main. calling somefunc...")
somefunc()
fmt.Println("done. bye :)")
}
other.go:
package main
import "fmt"
func somefunc() {
fmt.Println("This is in somefunc in other.go")
}
This works fine with go build:
~ cd $GOPATH/src/simple/main/
~ go build
~ ./main
This is in main. calling somefunc...
This is in somefunc in other.go
done. bye :)
From within the GoLand IDE, If I run, I get:
main/main.go:7:2: undefined: somefunc
Normally, there is editor highlighting of all syntax errors. The somefunc call is treated as valid syntax in the editor but when I run it doesn't work. I can even cmd-click into the function to jump to the definition.
This is with GoLand 2018.2.3 and go version go1.11

Answer 1

In GoLand create a Run Configuration Run -> Edit Configurations based on Go Build template and set
Name: Build (or whatever you like)
Run kind: Directory
Directory: /Users/gopher/go/src/simple/main/
^^^^^^
Run after build: checked
Working directory: /Users/gopher/go/src/simple
Change /Users/gopher/go/ part accordingly, to match your actual path of $GOPATH
And then Run -> Build the project
This is in main. calling somefunc...
This is in somefunc in other.go
done. bye :)
Process finished with exit code 0