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Can I build a wchar_t version using libstdc++ Version 2?

April 26, 2017build libstdc++ version

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Can I build a wchar_t version using libstdc++ Version 2?

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Yes you can, but first let us explain the problem. libstdc++ version 2 is an old c++ library that came bundled with GCC 2.9x. It pre-dates the C++ standard and is therefore not conforming. It is no longer actively maintained as it has been superseded by libstdc++ version 3 which comes bundled with GCC 3. libstdc++ does not have a typedef for std::wstring. It seems the reason for this is a bug in basic_string::c_str() which attempts to return the constant value “” for an empty string. This will not compile when T is anything other than char. OpenTop avoids using the c_str() method, but there is one place where we just have to use it. However, to enable OpenTop to compile with libstdc++ v2, we have some conditional code to by-pass the problem area. The conditional code is invoked when the OT_BROKEN_C_STR macro is #defined. So, to build a wide char version using GCC 2.