Question

我正在尝试配置和构建node.js插件的示例。样本来自node.js文档，源代码可以在这里找到

https://github.com/nodejs/node-addon-examples/tree/master/8_passing_wrapped/node_0.12

当我尝试在CLion中编译它时（在Ubuntu 14.04上）或当我使用node-gyp构建它时，我遇到了一些错误：

    /home/smorzhov/Documents/clion-2016.1/bin/cmake/bin/cmake --build /home/smorzhov/.CLion2016.1/system/cmake/generated/test4-94ee4803/94ee4803/Debug --target all -- -j 4
[ 25%] Linking CXX executable test4
CMakeFiles/test4.dir/myobject.cpp.o: In function `demo::MyObject::Init(v8::Isolate*)':
/home/smorzhov/ClionProjects/test4/test4/myobject.cpp:26: undefined reference to `v8::FunctionTemplate::New(v8::Isolate*, void (*)(v8::FunctionCallbackInfo<v8::Value> const&), v8::Local<v8::Value>, v8::Local<v8::Signature>, int)'
/home/smorzhov/ClionProjects/test4/test4/myobject.cpp:27: undefined reference to `v8::String::NewFromUtf8(v8::Isolate*, char const*, v8::String::NewStringType, int)'
/home/smorzhov/ClionProjects/test4/test4/myobject.cpp:27: undefined reference to `v8::FunctionTemplate::SetClassName(v8::Local<v8::String>)'
/home/smorzhov/ClionProjects/test4/test4/myobject.cpp:28: undefined reference to `v8::FunctionTemplate::InstanceTemplate()'
/home/smorzhov/ClionProjects/test4/test4/myobject.cpp:28: undefined reference to `v8::ObjectTemplate::SetInternalFieldCount(int)'
/home/smorzhov/ClionProjects/test4/test4/myobject.cpp:30: undefined reference to `v8::FunctionTemplate::GetFunction()'
/home/smorzhov/ClionProjects/test4/test4/myobject.cpp:30: undefined reference to `demo::MyObject::constructor'
CMakeFiles/test4.dir/myobject.cpp.o: In function `v8::PersistentBase<v8::Function>::Reset()':
/usr/include/node/v8.h:7224: undefined reference to `v8::V8::DisposeGlobal(v8::internal::Object**)'
CMakeFiles/test4.dir/myobject.cpp.o: In function `v8::PersistentBase<v8::Function>::New(v8::Isolate*, v8::Function*)':
/usr/include/node/v8.h:7176: undefined reference to `v8::V8::GlobalizeReference(v8::internal::Isolate*, v8::internal::Object**)'
CMakeFiles/test4.dir/myobject.cpp.o: In function `Reset<v8::Function>':
/usr/include/node/v8.h:7235: undefined reference to `demo::MyObject::constructor'
CMakeFiles/test4.dir/myobject.cpp.o: In function `demo::MyObject::New(v8::FunctionCallbackInfo<v8::Value> const&)':
/home/smorzhov/ClionProjects/test4/test4/myobject.cpp:38: undefined reference to `v8::Value::NumberValue() const'
CMakeFiles/test4.dir/myobject.cpp.o: In function `v8::Local<v8::Function>::New(v8::Isolate*, v8::PersistentBase<v8::Function> const&)':
/usr/include/node/v8.h:7124: undefined reference to `demo::MyObject::constructor'
CMakeFiles/test4.dir/myobject.cpp.o: In function `v8::Local<v8::Function>::New(v8::Isolate*, v8::Function*)':
/usr/include/node/v8.h:7134: undefined reference to `v8::HandleScope::CreateHandle(v8::internal::Isolate*, v8::internal::Object*)'
CMakeFiles/test4.dir/myobject.cpp.o: In function `demo::MyObject::New(v8::FunctionCallbackInfo<v8::Value> const&)':
/home/smorzhov/ClionProjects/test4/test4/myobject.cpp:47: undefined reference to `v8::Function::NewInstance(int, v8::Local<v8::Value>*) const'
CMakeFiles/test4.dir/myobject.cpp.o: In function `v8::Local<v8::Function>::New(v8::Isolate*, v8::PersistentBase<v8::Function> const&)':
/usr/include/node/v8.h:7124: undefined reference to `demo::MyObject::constructor'
CMakeFiles/test4.dir/myobject.cpp.o: In function `v8::Local<v8::Function>::New(v8::Isolate*, v8::Function*)':
/usr/include/node/v8.h:7134: undefined reference to `v8::HandleScope::CreateHandle(v8::internal::Isolate*, v8::internal::Object*)'
CMakeFiles/test4.dir/myobject.cpp.o: In function `demo::MyObject::NewInstance(v8::FunctionCallbackInfo<v8::Value> const&)':
/home/smorzhov/ClionProjects/test4/test4/myobject.cpp:57: undefined reference to `v8::Function::NewInstance(int, v8::Local<v8::Value>*) const'
CMakeFiles/test4.dir/myobject.cpp.o: In function `ClearWeak<void>':
/usr/include/node/v8.h:7298: undefined reference to `v8::V8::ClearWeak(v8::internal::Object**)'
CMakeFiles/test4.dir/myobject.cpp.o: In function `v8::PersistentBase<v8::Object>::Reset()':
/usr/include/node/v8.h:7224: undefined reference to `v8::V8::DisposeGlobal(v8::internal::Object**)'
CMakeFiles/test4.dir/myobject.cpp.o: In function `node::ObjectWrap::Wrap(v8::Local<v8::Object>)':
/usr/include/node/node_object_wrap.h:56: undefined reference to `v8::Object::InternalFieldCount()'
/usr/include/node/node_object_wrap.h:57: undefined reference to `v8::Object::SetAlignedPointerInInternalField(int, void*)'
/usr/include/node/node_object_wrap.h:58: undefined reference to `v8::Isolate::GetCurrent()'
CMakeFiles/test4.dir/myobject.cpp.o: In function `v8::PersistentBase<v8::Object>::Reset()':
/usr/include/node/v8.h:7224: undefined reference to `v8::V8::DisposeGlobal(v8::internal::Object**)'
CMakeFiles/test4.dir/myobject.cpp.o: In function `v8::PersistentBase<v8::Object>::New(v8::Isolate*, v8::Object*)':
/usr/include/node/v8.h:7176: undefined reference to `v8::V8::GlobalizeReference(v8::internal::Isolate*, v8::internal::Object**)'
CMakeFiles/test4.dir/myobject.cpp.o: In function `SetWeak<v8::Object, node::ObjectWrap>':
/usr/include/node/v8.h:7257: undefined reference to `v8::V8::MakeWeak(v8::internal::Object**, void*, void (*)(v8::WeakCallbackData<v8::Value, void> const&))'
CMakeFiles/test4.dir/myobject.cpp.o: In function `ClearWeak<void>':
/usr/include/node/v8.h:7298: undefined reference to `v8::V8::ClearWeak(v8::internal::Object**)'
CMakeFiles/test4.dir/myobject.cpp.o: In function `node::ObjectWrap::WeakCallback(v8::WeakCallbackData<v8::Object, node::ObjectWrap> const&)':
/usr/include/node/node_object_wrap.h:101: undefined reference to `v8::HandleScope::HandleScope(v8::Isolate*)'
CMakeFiles/test4.dir/myobject.cpp.o: In function `v8::Local<v8::Object>::New(v8::Isolate*, v8::Object*)':
/usr/include/node/v8.h:7134: undefined reference to `v8::HandleScope::CreateHandle(v8::internal::Isolate*, v8::internal::Object*)'
CMakeFiles/test4.dir/myobject.cpp.o: In function `v8::PersistentBase<v8::Object>::Reset()':
/usr/include/node/v8.h:7224: undefined reference to `v8::V8::DisposeGlobal(v8::internal::Object**)'
CMakeFiles/test4.dir/myobject.cpp.o: In function `node::ObjectWrap::WeakCallback(v8::WeakCallbackData<v8::Object, node::ObjectWrap> const&)':
/usr/include/node/node_object_wrap.h:108: undefined reference to `v8::HandleScope::~HandleScope()'
/usr/include/node/node_object_wrap.h:108: undefined reference to `v8::HandleScope::~HandleScope()'
CMakeFiles/test4.dir/addon.cpp.o: In function `demo::Add(v8::FunctionCallbackInfo<v8::Value> const&)':
/home/smorzhov/ClionProjects/test4/test4/addon.cpp:27: undefined reference to `v8::Number::New(v8::Isolate*, double)'
CMakeFiles/test4.dir/addon.cpp.o: In function `demo::InitAll(v8::Local<v8::Object>)':
/home/smorzhov/ClionProjects/test4/test4/addon.cpp:31: undefined reference to `v8::Object::GetIsolate()'
CMakeFiles/test4.dir/addon.cpp.o: In function `_register_addon':
/home/smorzhov/ClionProjects/test4/test4/addon.cpp:37: undefined reference to `node_module_register'
CMakeFiles/test4.dir/addon.cpp.o: In function `v8::Value::ToObject() const':
/usr/include/node/v8.h:7778: undefined reference to `v8::Isolate::GetCurrent()'
/usr/include/node/v8.h:7778: undefined reference to `v8::Isolate::GetCurrentContext()'
/usr/include/node/v8.h:7779: undefined reference to `v8::Value::ToObject(v8::Local<v8::Context>) const'
CMakeFiles/test4.dir/addon.cpp.o: In function `demo::MyObject* node::ObjectWrap::Unwrap<demo::MyObject>(v8::Local<v8::Object>)':
/usr/include/node/node_object_wrap.h:29: undefined reference to `v8::Object::InternalFieldCount()'
CMakeFiles/test4.dir/addon.cpp.o: In function `v8::Object::GetAlignedPointerFromInternalField(int)':
/usr/include/node/v8.h:7636: undefined reference to `v8::Object::SlowGetAlignedPointerFromInternalField(int)'
CMakeFiles/test4.dir/addon.cpp.o: In function `void node::NODE_SET_METHOD<v8::Local<v8::Object> >(v8::Local<v8::Object> const&, char const*, void (*)(v8::FunctionCallbackInfo<v8::Value> const&))':
/usr/include/node/node.h:239: undefined reference to `v8::Isolate::GetCurrent()'
/usr/include/node/node.h:240: undefined reference to `v8::HandleScope::HandleScope(v8::Isolate*)'
/usr/include/node/node.h:242: undefined reference to `v8::FunctionTemplate::New(v8::Isolate*, void (*)(v8::FunctionCallbackInfo<v8::Value> const&), v8::Local<v8::Value>, v8::Local<v8::Signature>, int)'
/usr/include/node/node.h:243: undefined reference to `v8::FunctionTemplate::GetFunction()'
/usr/include/node/node.h:244: undefined reference to `v8::String::NewFromUtf8(v8::Isolate*, char const*, v8::String::NewStringType, int)'
/usr/include/node/node.h:245: undefined reference to `v8::Function::SetName(v8::Local<v8::String>)'
/usr/include/node/node.h:246: undefined reference to `v8::Object::Set(v8::Local<v8::Value>, v8::Local<v8::Value>)'
/usr/include/node/node.h:246: undefined reference to `v8::HandleScope::~HandleScope()'
/usr/include/node/node.h:246: undefined reference to `v8::HandleScope::~HandleScope()'
collect2: error: ld returned 1 exit status
make[2]: *** [test4] Error 1
make[1]: *** [CMakeFiles/test4.dir/all] Error 2
make: *** [all] Error 2

也许这很重要，IDE不明白 #include node.h 我必须将其更改为#include node/node.h

看来，编译器只能看到节点和v8标头，无法找到它们的来源。

有人可以帮我解决这个问题吗？如何让编译器查看节点和v8源？

PS。我的CmakeLists.txt文件

cmake_minimum_required(VERSION 3.3)
project(test4)

set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11")

set(SOURCE_FILES addon.cpp main.cpp myobject.cpp myobject.h)
add_executable(test4 ${SOURCE_FILES})

Answer 1

如果您按照README并使用带有node-gyp标志的-v，您可以看到编译如下所示：

g++ '-DNODE_GYP_MODULE_NAME=addon' '-D_LARGEFILE_SOURCE' '-D_FILE_OFFSET_BITS=64' '-DBUILDING_NODE_EXTENSION' -I/home/yannick/.node-gyp/5.9.0/include/node -I/home/yannick/.node-gyp/5.9.0/src -I/home/yannick/.node-gyp/5.9.0/deps/uv/include -I/home/yannick/.node-gyp/5.9.0/deps/v8/include -fPIC -pthread -Wall -Wextra -Wno-unused-parameter -m64 -O3 -ffunction-sections -fdata-sections -fno-omit-frame-pointer -fno-rtti -fno-exceptions -std=gnu++0x -MMD -MF ./Release/.deps/Release/obj.target/addon/myobject.o.d.raw -c -o Release/obj.target/addon/myobject.o ../myobject.cc

因此，仅仅指定一些来源就更复杂了：有几个包括要使用的dirs，这些dirs似乎特定于您正在运行的节点版本，并且包含外部依赖项（libuv ）

为什么不使用自述文件建议的构建方法？

如何修复未定义的引用v8错误？

1 个答案: