kaisawind's blog

cgo中编译选项

package hcnet

/*
#cgo CFLAGS: -I${SRCDIR}
#cgo linux LDFLAGS: -L${SRCDIR}/../../3rdParty/Linux/hc_net_sdk/lib -lhcnetsdk -lhpr -lHCCore -Wl,-rpath=/usr/local/lib
#cgo linux LDFLAGS: -L${SRCDIR}/../../3rdParty/Linux/hc_net_sdk/lib/HCNetSDKCom -lHCGeneralCfgMgr -lHCIndustry -Wl,-rpath=/usr/local/lib/HCNetSDKCom
#cgo windows LDFLAGS: -L${SRCDIR}/../../3rdParty/Windows/hc_net_sdk/lib -lHCCore -lHCNetSDK -lhpr -Wl,-rpath=./
#cgo windows LDFLAGS: -L${SRCDIR}/../../3rdParty/Windows/hc_net_sdk/lib/HCNetSDKCom -lHCGeneralCfgMgr -lHCIndustry -Wl,-rpath=./HCNetSDKCom
#include "HCNetSDK.h"
//#include <stdio.h>
#include <stdlib.h>
//#include <unistd.h>
extern void fRemoteConfigCallbackCgo(DWORD dwType, void* lpBuffer, DWORD dwBufLen, void* pUserData);
extern BOOL MSGCallBackV31Cgo(LONG lCommand, NET_DVR_ALARMER *pAlarmer, char *pAlarmInfo, DWORD dwBufLen, void* pUser);
*/
import "C"
import (
	"encoding/hex"
	"fmt"
	"unsafe"
)

CFLAGS是引入头文件 ${SRCDIR}是指当前go文件所在的文件夹 LDFLAGS引入链接库 -L链接库路径 -l链接库名 linux和windows是跨平台选项 rpath指编译出的可执行文件依赖的链接库路径

Makefile的写法

build: linux

linux:
	CGO_ENABLED=1 GOOS=linux GOARCH=amd64 CC=gcc go build -o ./bin/ .

windows:
	CGO_ENABLED=1 GOOS=windows GOARCH=amd64 CC=x86_64-w64-mingw32-gcc go build -o ./bin/ .

要在linux上编译windows程序需要mingw,在windows中使用cgo也需要mingw

cgo中编译选项 - Sat, Oct 24, 2020