Issues with two versions of libstdC++.so Post: 302889060

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Top Forums Programming Issues with two versions of libstdC++.so Post 302889060 by Praveen_218 on Tuesday 18th of February 2014 01:55:21 PM

02-18-2014

Registered User

Issues with two versions of libstdC++.so

I'm facing an issue in which my program is using a custom library (say, libxyz.so) which is compiled using libstdc++.so.5 and the system I'm using this library to create an executable from my program, has libstdc++so.6 as well as libstdc++.so.5; both available under /usr/lib directory.

There are multiple compilers available with the system (i.e gcc, g++34 and g++ version 4.*, IBM xlc).

When I compile my program, the resultant binary has to link libxyz.so (which has libstdc++.so.5 already) and based on further symbols need, it has to use libstdc++.so, but it by default links with libstdc++.so.6 and these two versions of libstdc++ gets its way into my executable.

This clearly shows up the cross links when done ldd on my executable. The program crashes when run. Because some classes are not compatible in libstdc++.so between versions 5 and 6.

Being C++ program, still I compiled and linked with gcc itself which is by default linking only with libstdc++.so.5 but had to use -fno-use-cxa_exception_ptr as flag to suppress the undefined reference issue on exception handling code. This made my binary having uniform links with libstdc++.so.5 through out and the program runs well. But this is just a work around and not an acceptable solution.

Is there a way, in which we can make g++ (or even g++34) to link explicitly with a particular library version overriding the default behavior to link with the latest version?

In that case I would prefer to link with libstdc++.so.5 through out.

Thanks a lot in advance for your suggestions / insight and for your precious time of course.

Regards,
PraveenK

---------- Post updated at 12:25 AM ---------- Previous update was at 12:05 AM ----------

It would also be great, if you suggest on editing the gcc/g++ compile specs. However that again is not a very open option if this is not an user account specific changes. Although I have the root access but would not be allowed to make system configuration changes.

Last edited by Praveen_218; 02-18-2014 at 02:50 PM.. Reason: Typo errors.

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std::regex_iterator

std::regex_iterator< _Bi_iter, _Ch_type, _Rx_traits >(3cxx)			       std::regex_iterator< _Bi_iter, _Ch_type, _Rx_traits >(3cxx)

NAME

       std::regex_iterator< _Bi_iter, _Ch_type, _Rx_traits > -

SYNOPSIS

   Public Types
       typedef std::ptrdiff_t difference_type
       typedef std::forward_iterator_tag iterator_category
       typedef const value_type * pointer
       typedef const value_type & reference
       typedef basic_regex< _Ch_type,
	   _Rx_traits > regex_type"
       typedef match_results< _Bi_iter > value_type

   Public Member Functions
       regex_iterator ()
       regex_iterator (_Bi_iter __a, _Bi_iter __b, const regex_type &__re, regex_constants::match_flag_type __m=regex_constants::match_default)
       regex_iterator (const regex_iterator &__rhs)
       bool operator!= (const regex_iterator &__rhs)
       const value_type & operator* ()
       regex_iterator & operator++ ()
       regex_iterator operator++ (int)
       const value_type * operator-> ()
       regex_iterator & operator= (const regex_iterator &__rhs)
       bool operator== (const regex_iterator &__rhs)

Detailed Description
   template<typename _Bi_iter, typename _Ch_type = typename iterator_traits<_Bi_iter>::value_type, typename _Rx_traits =
       regex_traits<_Ch_type>>class std::regex_iterator< _Bi_iter, _Ch_type, _Rx_traits >
       An iterator adaptor that will provide repeated calls of regex_search over a range until no more matches remain.

       Definition at line 2238 of file regex.h.

Constructor &; Destructor Documentation
   template<typename _Bi_iter , typename _Ch_type  = typename iterator_traits<_Bi_iter>::value_type, typename _Rx_traits  =
       regex_traits<_Ch_type>> std::regex_iterator< _Bi_iter, _Ch_type, _Rx_traits >::regex_iterator ()
       Provides a singular iterator, useful for indicating one-past-the-end of a range. Todo
	   Implement this function.

	   Needs documentation! See http://gcc.gnu.org/onlinedocs/libstdc++/manual/documentation_style.html

   template<typename _Bi_iter , typename _Ch_type  = typename iterator_traits<_Bi_iter>::value_type, typename _Rx_traits  =
       regex_traits<_Ch_type>> std::regex_iterator< _Bi_iter, _Ch_type, _Rx_traits >::regex_iterator (_Bi_iter__a, _Bi_iter__b, const regex_type
       &__re, regex_constants::match_flag_type__m = regex_constants::match_default)
       Constructs a regex_iterator...

       Parameters:
	   a [IN] The start of a text range to search.
	   b [IN] One-past-the-end of the text range to search.
	   re [IN] The regular expression to match.
	   m [IN] Policy flags for match rules.

       Todo
	   Implement this function.

	   Needs documentation! See http://gcc.gnu.org/onlinedocs/libstdc++/manual/documentation_style.html

   template<typename _Bi_iter , typename _Ch_type  = typename iterator_traits<_Bi_iter>::value_type, typename _Rx_traits  =
       regex_traits<_Ch_type>> std::regex_iterator< _Bi_iter, _Ch_type, _Rx_traits >::regex_iterator (const regex_iterator< _Bi_iter, _Ch_type,
       _Rx_traits > &__rhs)
       Copy constructs a regex_iterator.

       Todo
	   Implement this function.

	   Needs documentation! See http://gcc.gnu.org/onlinedocs/libstdc++/manual/documentation_style.html

Member Function Documentation
   template<typename _Bi_iter , typename _Ch_type  = typename iterator_traits<_Bi_iter>::value_type, typename _Rx_traits  =
       regex_traits<_Ch_type>> bool std::regex_iterator< _Bi_iter, _Ch_type, _Rx_traits >::operator!= (const regex_iterator< _Bi_iter, _Ch_type,
       _Rx_traits > &__rhs)
       Todo
	   Implement this function.

	   Needs documentation! See http://gcc.gnu.org/onlinedocs/libstdc++/manual/documentation_style.html

   template<typename _Bi_iter , typename _Ch_type  = typename iterator_traits<_Bi_iter>::value_type, typename _Rx_traits  =
       regex_traits<_Ch_type>> const value_type& std::regex_iterator< _Bi_iter, _Ch_type, _Rx_traits >::operator* ()
       Todo
	   Implement this function.

	   Needs documentation! See http://gcc.gnu.org/onlinedocs/libstdc++/manual/documentation_style.html

   template<typename _Bi_iter , typename _Ch_type  = typename iterator_traits<_Bi_iter>::value_type, typename _Rx_traits  =
       regex_traits<_Ch_type>> regex_iterator& std::regex_iterator< _Bi_iter, _Ch_type, _Rx_traits >::operator++ ()
       Todo
	   Implement this function.

	   Needs documentation! See http://gcc.gnu.org/onlinedocs/libstdc++/manual/documentation_style.html

   template<typename _Bi_iter , typename _Ch_type  = typename iterator_traits<_Bi_iter>::value_type, typename _Rx_traits  =
       regex_traits<_Ch_type>> regex_iterator std::regex_iterator< _Bi_iter, _Ch_type, _Rx_traits >::operator++ (int)
       Todo
	   Implement this function.

	   Needs documentation! See http://gcc.gnu.org/onlinedocs/libstdc++/manual/documentation_style.html

   template<typename _Bi_iter , typename _Ch_type  = typename iterator_traits<_Bi_iter>::value_type, typename _Rx_traits  =
       regex_traits<_Ch_type>> const value_type* std::regex_iterator< _Bi_iter, _Ch_type, _Rx_traits >::operator-> ()
       Todo
	   Implement this function.

	   Needs documentation! See http://gcc.gnu.org/onlinedocs/libstdc++/manual/documentation_style.html

   template<typename _Bi_iter , typename _Ch_type  = typename iterator_traits<_Bi_iter>::value_type, typename _Rx_traits  =
       regex_traits<_Ch_type>> regex_iterator& std::regex_iterator< _Bi_iter, _Ch_type, _Rx_traits >::operator= (const regex_iterator< _Bi_iter,
       _Ch_type, _Rx_traits > &__rhs)
       Todo
	   Implement this function.

	   Needs documentation! See http://gcc.gnu.org/onlinedocs/libstdc++/manual/documentation_style.html

   template<typename _Bi_iter , typename _Ch_type  = typename iterator_traits<_Bi_iter>::value_type, typename _Rx_traits  =
       regex_traits<_Ch_type>> bool std::regex_iterator< _Bi_iter, _Ch_type, _Rx_traits >::operator== (const regex_iterator< _Bi_iter, _Ch_type,
       _Rx_traits > &__rhs)
       Todo
	   Implement this function.

	   Needs documentation! See http://gcc.gnu.org/onlinedocs/libstdc++/manual/documentation_style.html

Author
       Generated automatically by Doxygen for libstdc++ from the source code.

libstdc++							  Tue Nov 27 2012      std::regex_iterator< _Bi_iter, _Ch_type, _Rx_traits >(3cxx)