Create a sample shared library in golang 1.5.

gistfile1.txt

nadeem@myznc:~/go/src$ ls -al dummy
total 12
drwxrwxr-x 2 nadeem nadeem 4096 Jul 20 18:46 .
drwxrwxr-x 6 nadeem nadeem 4096 Jul 20 18:45 ..
-rw-rw-r-- 1 nadeem nadeem  129 Jul 20 18:46 hello.go

nadeem@myznc:~/go/src/dummy$ cat hello.go
// Package dummy contains hello world library.
package dummy

import "fmt"

func RunFoo() {
    fmt.Println("Hello World")
}

Here are the steps to build this package as a library:

a) In order to create library, we first need to compile & install runtime shared libraries:
  go install -buildmode=shared runtime sync/atomic
This will install the create "linux_amd64_dynlink" under $GOROOT/pkg. Here is what directory looks like

  nadeem@myznc:/usr/local/go/pkg/linux_amd64_dynlink$ ls -R
  .:
  libruntime,sync-atomic.so  runtime  runtime.a  runtime.shlibname  sync
  
  ./runtime:
  cgo.a  cgo.shlibname
  
  ./sync:
  atomic.a  atomic.shlibname

b) Now lets build our dummy library, we need to pass -linkshared flag in order to use the .so file created above
  nadeem@myznc:~/go/src$ go build -linkshared -buildmode=shared dummy

c) Now lets install this library:
   nadeem@myznc:~/go/src$ go install -linkshared -buildmode=shared dummy

  nadeem@myznc:~/go/pkg/linux_amd64_dynlink$ ls -al
  total 3080
  drwxrwxr-x 2 nadeem nadeem    4096 Jul 20 19:06 .
  drwxrwxr-x 3 nadeem nadeem    4096 Jul 20 19:06 ..
  -rw-r--r-- 1 nadeem nadeem    7180 Jul 20 19:06 dummy.a
  -rw-r--r-- 1 nadeem nadeem      12 Jul 20 19:06 dummy.shlibname
  -rw-r--r-- 1 nadeem nadeem 3132538 Jul 20 19:06 libdummy.so

  nadeem@myznc:~/go/pkg/linux_amd64_dynlink$ ldd libdummy.so
	linux-vdso.so.1 =>  (0x00007ffc2d9b7000)
	libruntime,sync-atomic.so => /usr/local/go/pkg/linux_amd64_dynlink/libruntime,sync-atomic.so (0x00007f9418e18000)
	libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x00007f9418a4e000)
	libpthread.so.0 => /lib/x86_64-linux-gnu/libpthread.so.0 (0x00007f941882f000)
	/lib64/ld-linux-x86-64.so.2 (0x00007f94196a8000)

d) Now lets use this library

  nadeem@myznc:~/go/src$ cat main.go
  package main
  
  import "dummy"
  
  func main() {
      dummy.RunFoo()
  }
  
  nadeem@myznc:~/go/src$ go build -linkshared main.go
  nadeem@myznc:~/go/src$ ldd main
      linux-vdso.so.1 =>  (0x00007ffdc0de5000)
      libruntime,sync-atomic.so => /usr/local/go/pkg/linux_amd64_dynlink/libruntime,sync-atomic.so (0x00007fda01715000)
      libdummy.so => /home/nadeem/go/pkg/linux_amd64_dynlink/libdummy.so (0x00007fda01281000)
      libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x00007fda00eb7000)
      libpthread.so.0 => /lib/x86_64-linux-gnu/libpthread.so.0 (0x00007fda00c99000)
      /lib64/ld-linux-x86-64.so.2 (0x00007fda01b12000)

  nadeem@myznc:~/go/src$ ./main
  Hello World