


How to Resolve Linker Errors When Converting `std::__cxx11::string` to `std::string`?
Jan 03, 2025 am 07:09 AMConverting std::__cxx11::string to std::string: A Linker Error Resolution
Despite the prevalence of C 11, certain libraries remain incompatible with its features. One such challenge arises when attempting to convert from a std::__cxx11::string to a standard std::string.
This incompatibility manifests in linker errors, such as "undefined reference to `H5::CompType::insertMember." These errors often occur when linking object files compiled with different values for the _GLIBCXX_USE_CXX11_ABI macro.
Solution: Recompiling with the Legacy ABI
If recompiling the third-party library with C 11 support is not an option, users can resolve the issue by recompiling their code with the legacy ABI. This involves defining the following macro before including any standard library headers:
#define _GLIBCXX_USE_CXX11_ABI 0
By setting this macro, the code is forcibly compiled with the older ABI, ensuring compatibility with the third-party library. This approach effectively patches the linker error and allows the code to operate seamlessly.
Note:
It is crucial to define this macro before including any standard library headers. Otherwise, the compilation process may default to the C 11 ABI, rendering the fix ineffective.
The above is the detailed content of How to Resolve Linker Errors When Converting `std::__cxx11::string` to `std::string`?. For more information, please follow other related articles on the PHP Chinese website!

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