How to Resolve std::__cxx11::string to std::string Conversion Issues in C ?

std::__cxx11::string to std::string Conversion

In C 11, the library provides a std::__cxx11::string type that differs from the standard std::string. To achieve compatibility with external libraries that may not support C 11, it becomes necessary to convert between these two string types.

According to the error message provided, the linker is unable to resolve references involving std::__cxx11::string. One potential reason is the use of the incorrect _GLIBCXX_USE_CXX11_ABI macro.

Solution:

To resolve this issue, users may need to check if they are using GCC 5 or later. If so, they should define the _GLIBCXX_USE_CXX11_ABI macro to 0 before including any standard library headers. This can be done as follows:

#define _GLIBCXX_USE_CXX11_ABI 0

By defining this macro, the linker will use the older ABI, ensuring compatibility with the external libraries. As a result, the conversion from std::__cxx11::string to std::string should become seamless.

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