Question

我正在尝试将Golang脚本与现有的C共享库集成。 C共享库反过来在运行时加载其他共享库。

我想跑步的时候去运行gotest.go

它抛出错误

./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

我已经创建了单独的C可执行文件，以便在运行时加载此libtest.so并且运行正常。

知道应该采取什么措施来解决这个问题吗？

我尝试过以下命令

sudo go build -compiler = gccgo -gccgoflags =“ - ltest”gotest.go

也尝试了命令

sudo go build -compiler = gccgo -gccgoflags =“ - ltest -ldl”gotest.go

还尝试了命令

go run gotest.go

===============================================

以下是我正在使用的代码

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;
}

我的gotest.go文件中有以下条目

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))
}

我已将testapi.h，gotest.go，mylib.h，libmylib.so，libtest.so复制到同一目录中。然后运行命令

go run gotest.go

它抛出错误“错误：未定义引用'getStudent'”

我在这里做错了什么？我应该运行命令

sudo go build -compiler = gccgo -gccgoflags =“ - ltest”gotest.go

go run throes error“未定义引用`dlopen'”

0 个答案: