运行简单的cgo文件时遇到错误

Question

我试图测试cgo代码。

package main

// #include <stdlib.h>

import (
    "C"
    "fmt"
)

func main() {
    fmt.Printf("test %d\n", int(C.random()))
}

D:\Dev\Go\src>go version 
go version go1.3 windows/amd64

D:\Dev\Go\src>go env 
set GOARCH=amd64 
set GOBIN= 
set GOCHAR=6 
set GOEXE=.exe 
set GOHOSTARCH=amd64 
set GOHOSTOS=windows 
set GOOS=windows
set GOPATH=D:\\Dev\\Go 
set GORACE= 
set GOROOT=c:\go 
set GOTOOLDIR=c:\go\pkg\tool\windows_amd64 
set CC=gcc 
set GOGCCFLAGS=-m64-mthreads -fmessage-length=0 
set CXX=g++ 
set CGO_ENABLED=1

D:\Dev\Go\src>go run test_binding.go
# runtime/cgo C:\Users\hyoon\AppData\Local\Temp\go-build779392087\runtime\cgo\_obj\_cgo_defun.c:7 6c: No such file  or directory: runtime.h

请检查上一个错误。什么错了？

Answer 1

你从这个程序得到什么输出？

package main

/*
#include <stdlib.h>
*/
import "C"

import (
    "fmt"
)

func main() {
    fmt.Printf("test %d\n", int(C.rand()))
}