How I can use local package in golang?

Question

Here are two .go files.

├── lib.go
└── main.go

The lib.go has a package libtest.

$ cat lib.go 

package libtest

import (
    "fmt"
)

func TestLibFunc() {
    fmt.Println("This is test library function")
}

The main.go has a package main.

$ cat main.go
package main

import (
    "libtest"
)

func main() {
    libtest.TestLibFunc()
}

When I tried to build them, but it's failed.

$ go build *.go
can't load package: package main: found packages libtest (lib.go) and main (main.go) in /Users/dev/work/tmp/local-package

How can I use local packages in main package?

[How to Write Go Code](https://golang.org/doc/code.html) – icza Apr 23 '18 at 06:56 — icza, Apr 23 '18 at 06:56
You can`t declare difаerent package name in one package – cheks Apr 24 '18 at 09:23 — cheks, Apr 24 '18 at 09:23

score 2 · Accepted Answer · answered Apr 23 '18 at 07:00

2

You need to put each package in a separate sub-directory. So your directory structure so put lib.go in project/lib and main.go in project/cmd. It should then work.

answered Apr 23 '18 at 07:00

GilesW

485
2
7

score 0 · Answer 2 · answered Apr 23 '18 at 07:07

First of all create a separate package libtest and put lib.go there. Then you should give the full path of libtest otherwise your import right now searches for $GOPATH/src/libtest or /usr/local/Cellar/go/<version> which doesn't exist.

So you should give import project/libtest

How I can use local package in golang?

2 Answers2