记录今天遇到的问题:
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使用c++11 写了一段c++程序,使用gcc 7.3编译。程序引用了非c++11编写的静态库。
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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。
我们百度或者Google可以发现,这个原因来源与GCC的版本问题。因为自gcc 5以后引入了新的ABI,简单点说就是gcc5 重写了string和list,我们使用的库的接口一旦使用这几个类,就容易出现这个问题。
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。
如果是使用cmake,在CMakelist.txt添加如下定义。
add_definitions(-D_GLIBCXX_USE_CXX11_ABI=0)