go run throes error " undefined reference to `dlopen'" - go

Question

I am trying to integrate Golang script with existing C shared library.
The C shared library in turn loads other shared libraries at run time.
While I am trying to run
go run gotest.go
it throws error
./libtest.so: undefined reference to `dlopen'
./libtest.so: undefined reference to `dlclose'
./libtest.so: undefined reference to `dlerror'
./libtest.so: undefined reference to `dlsym'
collect2: error: ld returned 1 exit status
I have created separate C executable to load this libtest.so at run time and that is working properly.
Any idea what should be done to fix the issue?
I have tried following commands
sudo go build -compiler=gccgo -gccgoflags="-ltest" gotest.go
also tried the command
sudo go build -compiler=gccgo -gccgoflags="-ltest -ldl" gotest.go
Also tried the command
go run gotest.go
===============================================
Here is the code I am using
testapi.h
typedef Students{
char name[40];
int id;
} Student;
Student* getStudent();
test.c
#include <stdlib.h>
#include <stdio.h>
#include "mylib.h"
#include "testapi.h"
int rc = 0;
Student *s = 0;
Student* getStudent(){
rc = loadmylib(); //This function loads another shared library
if (!rc)
{
rc = initlib(); //This calls dlsym to get the necessary function from opened shared library
if (!rc)
{
s= (student *)malloc(sizeof(Student));
//use the function pointer received from dlsym to populate the Student struct 's'
}
}
return s;
}
I have following entries in my gotest.go file
package main
/*
#cgo CFLAGS: -I.
#cgo LDFLAGS: -L. -ltest -ldl
#include "testapi.h"
*/
import "C"
import (
"fmt"
)
type Student struct{
name string
id int
}
func main() {
st := C.getStudent()
fmt.Println("Name: ", string(st.name))
}
I have copied testapi.h, gotest.go, mylib.h, libmylib.so, libtest.so in the same directory.
Then run the command
go run gotest.go
It has thrown the error " error: undefined reference to 'getStudent' "
What am I doing wrong here?
Am I supposed to run command
sudo go build -compiler=gccgo -gccgoflags="-ltest" gotest.go