在与boost::serialization关联时，我的项目“发布”版本出现问题。我的'debug'和'release'版本之间唯一真正的区别是我定义了DEBUG并在调试中使用-O0，我定义了NDEBUG并在版本中使用-O3。 / p>
我可以在调试模式下完全编译，链接和运行。
但是，当我使用发布模式进行编译时，它会正常编译，但在链接时会出现以下错误：
/home/jarrett/projects/icebreakers/glr/build/libglr.a(ModelManager.o): In function `serialize<boost::archive::text_iarchive, glr::models::Model>':
/home/jarrett/projects/icebreakers/glr/deps/boost/include/boost/serialization/access.hpp:118: undefined reference to `void glr::models::Model::serialize<boost::archive::text_iarchive>(boost::archive::text_iarchive&, unsigned int)'
/home/jarrett/projects/icebreakers/glr/build/libglr.a(ModelManager.o): In function `serialize<boost::archive::text_oarchive, glr::models::Model>':
/home/jarrett/projects/icebreakers/glr/deps/boost/include/boost/serialization/access.hpp:118: undefined reference to `void glr::models::Model::serialize<boost::archive::text_oarchive>(boost::archive::text_oarchive&, unsigned int)'
/home/jarrett/projects/icebreakers/glr/build/libglr.a(TextureManager.o): In function `serialize<boost::archive::text_iarchive, glr::glw::Texture2D>':
/home/jarrett/projects/icebreakers/glr/deps/boost/include/boost/serialization/access.hpp:118: undefined reference to `void glr::glw::Texture2D::serialize<boost::archive::text_iarchive>(boost::archive::text_iarchive&, unsigned int)'
/home/jarrett/projects/icebreakers/glr/build/libglr.a(TextureManager.o): In function `serialize<boost::archive::text_oarchive, glr::glw::Texture2D>':
/home/jarrett/projects/icebreakers/glr/deps/boost/include/boost/serialization/access.hpp:118: undefined reference to `void glr::glw::Texture2D::serialize<boost::archive::text_oarchive>(boost::archive::text_oarchive&, unsigned int)'
/home/jarrett/projects/icebreakers/glr/build/libglr.a(AnimationManager.o): In function `serialize<boost::archive::text_iarchive, glr::glw::Animation>':
/home/jarrett/projects/icebreakers/glr/deps/boost/include/boost/serialization/access.hpp:118: undefined reference to `void glr::glw::Animation::serialize<boost::archive::text_iarchive>(boost::archive::text_iarchive&, unsigned int)'
/home/jarrett/projects/icebreakers/glr/build/libglr.a(AnimationManager.o): In function `serialize<boost::archive::text_oarchive, glr::glw::Animation>':
/home/jarrett/projects/icebreakers/glr/deps/boost/include/boost/serialization/access.hpp:118: undefined reference to `void glr::glw::Animation::serialize<boost::archive::text_oarchive>(boost::archive::text_oarchive&, unsigned int)'
collect2: error: ld returned 1 exit status
scons: *** [build/darkhorizon] Error 1
scons: building terminated because of errors.
我不明白这一点，因为所讨论的方法是完全定义的。我在这些类的代码中没有做任何类型的#ifdef NDEBUG等宏。
有谁理解为什么会这样？
我的Texture2D类：
Texture2D.hpp
Texture2D.cpp
我的TextureManager类：
TextureManager.hpp
TextureManager.cpp
如果有帮助，我很乐意提供更多直接/本地化的代码段。
更新：如果我将serialize方法的定义移到头文件中，突然它会链接！我想这与他们作为模板方法有关，但我仍然不明白为什么我的'debug'构建有效，但我的'release'版本没有......
答案 0 :(得分：1)
确实是因为这个原因。显然在DEBUG构建中，模板实例化获得外部链接（这在启用优化时很常见，因为很可能内联（顶级）调用。
另见