OS X上的鏈接錯誤

Question

這可能看起來像一個'noob'問題：我已經爲Mac下載了SFML-1.6，並且已將框架放入我的/ Library/Frameworks文件夾中。在嘗試編譯示例SFML應用程序後，我幾乎每次打電話給SFML都會收到鏈接程序錯誤。我不確定我錯過了什麼？我沒有太多的OSX和框架經驗，所以也許我需要通過其他方法鏈接到庫？

輸出，如果它可以幫助：

Undefined symbols for architecture x86_64: 
    "sf::VideoMode::VideoMode(unsigned int, unsigned int, unsigned int)", referenced from: 
     osx_init::init() in osx_init.o 
    "sf::RenderWindow::RenderWindow(sf::VideoMode, std::string const&, unsigned long, sf::WindowSettings const&)", referenced from: 
     osx_init::init() in osx_init.o 
    "sf::RenderTarget::PreserveOpenGLStates(bool)", referenced from: 
     osx_init::init() in osx_init.o 
    "sf::Image::Image()", referenced from: 
     osx_init::init() in osx_init.o 
    "sf::Image::LoadFromFile(std::string const&)", referenced from: 
     osx_init::init() in osx_init.o 
    "sf::Color::Color(unsigned char, unsigned char, unsigned char, unsigned char)", referenced from: 
     osx_init::init() in osx_init.o 
    "sf::Sprite::Sprite(sf::Image const&, sf::Vector2<float> const&, sf::Vector2<float> const&, float, sf::Color const&)", referenced from: 
     osx_init::init() in osx_init.o 
    "sf::Image::GetWidth() const", referenced from: 
     osx_init::init() in osx_init.o 
    "sf::Image::GetHeight() const", referenced from: 
     osx_init::init() in osx_init.o 
    "sf::Image::GetPixelsPtr() const", referenced from: 
     osx_init::init() in osx_init.o 
    "sf::Image::~Image()", referenced from: 
     osx_init::init() in osx_init.o 
    "sf::Clock::Clock()", referenced from: 
     osx_init::init() in osx_init.o 
    "sf::Window::IsOpened() const", referenced from: 
     osx_init::init() in osx_init.o 
    "sf::Window::GetEvent(sf::Event&)", referenced from: 
     osx_init::init() in osx_init.o 
    "sf::Window::Close()", referenced from: 
     osx_init::init() in osx_init.o 
    "sf::Clock::GetElapsedTime() const", referenced from: 
     osx_init::init() in osx_init.o 
    "sf::Unicode::Text::Text(char const*)", referenced from: 
     osx_init::init() in osx_init.o 
    "sf::Font::GetDefaultFont()", referenced from: 
     osx_init::init() in osx_init.o 
    "sf::String::String(sf::Unicode::Text const&, sf::Font const&, float)", referenced from: 
     osx_init::init() in osx_init.o 
    "sf::Drawable::SetPosition(float, float)", referenced from: 
     osx_init::init() in osx_init.o 
    "sf::Drawable::SetColor(sf::Color const&)", referenced from: 
     osx_init::init() in osx_init.o 
    "sf::Window::Display()", referenced from: 
     osx_init::init() in osx_init.o 
    "sf::RenderWindow::~RenderWindow()", referenced from: 
     osx_init::init() in osx_init.o 
    "vtable for sf::Sprite", referenced from: 
     sf::Sprite::~Sprite() in osx_init.o 
    "sf::Drawable::~Drawable()", referenced from: 
     sf::Sprite::~Sprite() in osx_init.o 
     sf::String::~String() in osx_init.o 
    "vtable for sf::String", referenced from: 
     sf::String::~String() in osx_init.o 
ld: symbol(s) not found for architecture x86_64 
clang: error: linker command failed with exit code 1 (use -v to see invocation) 

Answer 1

看來你的問題也可以從OS X一個有經驗的開發人員回答，但因爲它是一個SFML相關的問題也一樣，我建議你取得聯繫與開發人員（或至少他移植了全部）SFML for OS X：hirua。 （或者他也在Stackoverflow上？）

此外，還有一個instruction用於在論壇中構建（並使用）SFML 2.0庫。也許這對你的1.6版本也有幫助。

（我想補充這只是一個評論，但似乎我的名聲不是很大（但））

Answer 2

你需要兩個標誌添加到鏈接器選項：

-framework SFML 

這告訴鏈接器使用的框架/Library/Frameworks/SFML.framework

此外，你必須包括-lsfml-whatever每個庫你使用：

-lsfml-system 
-lsfml-window 
-lsfml-graphics 
-lsfml-audio 
-lsfml-network 

所以，一個完整的鏈接線可能看起來像：

g++ -framework SFML -lsfml-graphics -lsfml-audio -lsfml-window -lsfml-system 

從Mac OSX SFML建立文檔這不是很明顯，但你需要兩者。