CODEWITHSUNDEEP
c++stdlibstdc++
gregoiregentil
gregoiregentil

Reputation: 1899

How to add a few missing std:: functions from libstc++6?

I'm compiling a c++ application on a very old system with libstdc++6. This libstdc++6 has functions up to GLIBCXX_3.4.21.

I need to use an external .so library which uses just a few more functions up to @GLIBCXX_3.4.22 and I can't recompile it.

For some other reasons, the old system is too old to be upgraded. The compilation errors are:

undefined reference to `std::thread::_M_start_thread(std::unique_ptr<std::thread::_State, std::default_delete<std::thread::_State> >, void (*)())'
undefined reference to `std::thread::_State::~_State()'
undefined reference to `typeinfo for std::thread::_State'
undefined reference to `std::thread::_State::~_State()@GLIBCXX_3.4.22'
undefined reference to `typeinfo for std::thread::_State@GLIBCXX_3.4.22'
undefined reference to `std::thread::_M_start_thread(std::unique_ptr<std::thread::_State, std::default_delete<std::thread::_State> >, void (*)())@GLIBCXX_3.4.22'

I found a newer libstdc++.so.6 and I managed to make work my app with:

LD_PRELOAD="libstdc++.so.6"

but I would like to avoid mixing different libstdc++.so.6 and overwriting the original library.

How could I find and add the relevant C++ code to my app in order to provide the missing functions of the std namespace? I think that I'm missing only the following functions:

std::thread::_M_start_thread(std::unique_ptr<std::thread::_State, std::default_delete<std::thread::_State> >, void (*)())
std::thread::_State::~_State()
std::thread::_State

Upvotes: 1

Views: 78

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