Go与C语言的互操作 cgo

diegodu · · 1402 次点击 · · 开始浏览

这是一个创建于的文章，其中的信息可能已经有所发展或是发生改变。

http://tonybai.com/2012/09/26/interoperability-between-go-and-c/

// foo.h
 
int count;
void foo();
 
//foo.c
#include "foo.h"
 
int count = 6;
void foo() {
    printf("I am foo!\n");
}

//foo.go

package main
 
// #cgo LDFLAGS: -L ./ -lfoo
// #include <stdio.h>
// #include <stdlib.h>
// #include "foo.h"
import "C"
import "fmt“
 
func main() {
    fmt.Println(C.count)
    C.foo()
}

使用静态库

$> gcc -c foo.c

$> ar rv libfoo.a foo.o

[diego@localhost ~/GoWork/src/applycation/testCgo]# go build foo.go
[diego@localhost ~/GoWork/src/applycation/testCgo]# ./foo 
6
I am foo!

[diego@localhost ~/GoWork/src/applycation/testCgo]# gcc -fPIC -shared -o libfoo.so foo.c
[diego@localhost ~/GoWork/src/applycation/testCgo]# rm li
libfoo.a   libfoo.so* 
[diego@localhost ~/GoWork/src/applycation/testCgo]# rm libfoo.a
[diego@localhost ~/GoWork/src/applycation/testCgo]# go build fo
foo*    foo.c   foo.go  foo.h   foo.o   
[diego@localhost ~/GoWork/src/applycation/testCgo]# go build foo.
foo.c   foo.go  foo.h   foo.o   
[diego@localhost ~/GoWork/src/applycation/testCgo]# go build foo.go 
[diego@localhost ~/GoWork/src/applycation/testCgo]# ./foo 
6
I am foo!
[diego@localhost ~/GoWork/src/applycation/testCgo]#