Re: [boost] regex linking error gcc 2.95 solaris 2.8, stlport

From: Dan Nuffer (dnuffer_at_[hidden])
Date: 2002-12-02 15:36:52

John Maddock wrote:
>>I built the library individually with the following line :
>>
>>bjam "-sTOOLS=gcc-stlport" "-sSTLPORT_ROOT=..."
>>
>>everything seems to compile properly but when I use the following from a
> 
> .so
> 
>>:
>>
>>boost::regex exp("std");
>>
>>I get the following error from dlopen:
>>
>>ld.so.1: output/Text2RvMsg_tester: fatal: relocation error: file
>>output/Text2RvMsg.so: symbol
>>
> 
> __Q25boostt14reg_expression3ZcZQ25boostt12regex_traits1ZcZQ24_STLt9allocator
> 1ZcPCcUiRCQ24_STLt9allocator1Zc:
> 
>>referenced symbol not found
>>
>>does anyone know how to get around this?  There are similar symbols within
>>the debug.so that I am trying to use however they are usually a
>>regex_traits1ZcZt24 or something similar.
>>
>>I have tried to search for this but can't find a match for it, is it some
>>gcc compilation error?
> 
> 
> No idea we could use some input from a gcc expert to tell us what that
> symbol means, just an idea here, but can you not link against the .a lib
> file - apart from anything else your final code size will be much smaller
> (including the size of the lib that is).
> 

To de-mange gcc symbols, run the command c++filt <mangled symbol>.  The 
symbol mentioned above is:

boost::reg_expression<char, boost::regex_traits<char>, 
_STL::allocator<char> >::reg_expression(char const *, unsigned int, 
_STL::allocator<char> const &)

--Dan Nuffer