我正在尝试创建一些node.js插件。在插件内部,我有一个静态库的调用。一切都编译好,但是当我从javascript调用我的插件函数时,我得到以下内容:
module.js:356
Module._extensions[extension](this, filename);
^
Error: /home/.../Projects/NodeAddonComLibTest/build/Debug/addon.node: undefined symbol: _Z6ctest1Pi
at Module.load (module.js:356:32)
at Function.Module._load (module.js:312:12)
at Module.require (module.js:364:17)
at require (module.js:380:17)
at Object.<anonymous> (/home/.../Projects/NodeAddonComLibTest/doTest.js:1:75)
at Module._compile (module.js:456:26)
at Object.Module._extensions..js (module.js:474:10)
at Module.load (module.js:356:32)
at Function.Module._load (module.js:312:12)
at Function.Module.runMain (module.js:497:10)
我的插件代码如下:
#include <iostream>
#include <string.h>
#include <stdlib.h>
#include <node.h>
#include <v8.h>
using namespace v8;
using namespace std;
void ctest1(int *);
Handle<Value> setPort(const Arguments& args){
HandleScope scope;
if (args.Length() != 1) {
ThrowException(Exception::TypeError(String::New("Wrong number of arguments.")));
return scope.Close(Undefined());
}
// =========================
printf("Calling static lib...\n");
int x=0;
ctest1(&x);
printf("Val c=%d\n", x);
// =========================
return scope.Close(Number::New(args[0]->NumberValue()));
}
void Init(Handle<Object> exports) {
exports->Set(String::NewSymbol("show"), FunctionTemplate::New(setPort)->GetFunction());
}
NODE_MODULE(addon, Init)
有人可以帮忙吗?
由于
答案 0 :(得分:6)
void ctest1(int *);必须用extern "C"
声明它:
extern "C" {
void ctest1(int *);
}