golang生成c-shared so供c语言或者golang调用到例子

1.golang生成c-shared类型到so

建立文件夹hello,创建main.go文件，内容如下

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package main   import "C"   func main() {}   //export Hello func Hello() string {     return "Hello" }   //export Test func Test() {     println("export Test") }

 生成so脚本文件，命令行：

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export GOARCH="386" export GOBIN="/home/ender/下载/go/bin" export GOEXE="" export GOHOSTARCH="386" export GOHOSTOS="linux" export GOOS="linux" export GOPATH="/home/ender/go:/home/ender/下载/goproject" export GORACE="" export GOROOT="/home/ender/下载/go" export GOTOOLDIR="/home/ender/下载/go/pkg/tool/linux_386" export GCCGO="gccgo" export GO386="" export CC="gcc" export GOGCCFLAGS="-fPIC -m32 -pthread -fmessage-length=0 -fdebug-prefix-map=/tmp/go-build128906296=/tmp/go-build -gno-record-gcc-switches" export CXX="g++" export CGO_ENABLED="1" export PKG_CONFIG="pkg-config" export CGO_CFLAGS="-g -O2" export CGO_CPPFLAGS="" export CGO_CXXFLAGS="-g -O2" export CGO_FFLAGS="-g -O2" export CGO_LDFLAGS="-g -O2"   $GOBIN/go build -x -v -ldflags "-s -w" -buildmode=c-shared -o libhello.so   main.go

成生libhello.so  libhello.h文件

 

2.c语言调用libhello.so

　　把libhello.so拷贝到/usr/lib中用于运行

　　新建一个文件夹hello_test ,把libhello.so  libhello.h拷贝到文件夹hello_test中

　　把libhello.h中到GoString类型更改为_GoString

　　创建main.c,内容如下

　　

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#include <stdio.h> #include "libhello.h"   void main() {     _GoString str;     str = Hello();        Test();     printf("%d\n",str.n); }

 

编译命令如下：gcc main.c -o t1 -I./ -L./ -lhello

 

3.golang调用libhello.so

创建main.go文件内容如下：

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package main   /* #include <stdio.h> #include "libhello.h" #cgo linux CFLAGS: -L./ -I./ #cgo linux LDFLAGS: -L./ -I./ -lhello */ import "C"   import (     "fmt" )   func main() {       str := C.Hello()     C.Test()     fmt.Println(str) }

 生成脚本文件b.sh内容如下

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export GOARCH="386" export GOBIN="/home/ender/下载/go/bin" export GOEXE="" export GOHOSTARCH="386" export GOHOSTOS="linux" export GOOS="linux" export GOPATH="/home/ender/go:/home/ender/下载/goproject" export GORACE="" export GOROOT="/home/ender/下载/go" export GOTOOLDIR="/home/ender/下载/go/pkg/tool/linux_386" export GCCGO="gccgo" export GO386="" export CC="gcc" export GOGCCFLAGS="-fPIC -m32 -pthread -fmessage-length=0 -fdebug-prefix-map=/tmp/go-build128906296=/tmp/go-build -gno-record-gcc-switches" export CXX="g++" export CGO_ENABLED="1" export PKG_CONFIG="pkg-config" export CGO_CFLAGS="-g -O2" export CGO_CPPFLAGS="" export CGO_CXXFLAGS="-g -O2" export CGO_FFLAGS="-g -O2" export CGO_LDFLAGS="-g -O2"   $GOBIN/go build  -o ./test main.go

 

 

 

b.sh需要sudo chmod  777 b.sh后执行

./test

./t1

运行