记录今天遇到的问题:
1. 使用c++11 写了一段c++程序,使用gcc 5.2编译。程序引用了非c++11编写的静态库
2. 链接时总是报某个函数找不到 但是使用nm命令查看,符号确实存在
经过google发现,原来gcc 5引入了新的ABI
https://gcc.gnu.org/onlinedocs/libstdc++/manual/using_dual_abi.html
If you get linker errors about undefined references to symbols that involve types in the std::__cxx11 namespace or the tag [abi:cxx11] then
it probably indicates that you are trying to link together object files that were compiled with different values for the _GLIBCXX_USE_CXX11_ABI macro. This commonly happens when linking
to a third-party library that was compiled with an older version of GCC. If the third-party library cannot be rebuilt with the new ABI then you will need to recompile your code with the old ABI.
对于我的问题,需要在参数上增加 -D_GLIBCXX_USE_CXX11_ABI=0 就解决了。
本文介绍了使用GCC5.2编译C++11程序时遇到的链接错误问题及解决方法。当链接到非C++11编写的静态库时,可能会出现符号未定义的错误,即使这些符号实际上存在于静态库中。文章提供了如何通过设置宏来解决这个问题的具体步骤。
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