[boost] Re: program-options thread problem

From: Vladimir Prus (ghost_at_[hidden])
Date: 2004-04-26 01:54:48

Hi Neal,

> I have both added current program-options to my boost build tree, and all
> the usual variants of libboost_program_options-gcc.a, also
> libboost_python-gcc-mt.a.
> 
> Linking against libboost_program_options-gcc.a I get errors about pthread
> symbols.  Adding -pthread fixes it.  It looks to me that
> libboost_program_options-gcc.a
> is referencing pthread symbols.
> 
> nm
> /usr/local/src/boost_1_31_0.gcc34/stage/lib/libboost_program_options-gcc.a
> | grep thread
>          U pthread_mutex_destroy
>          U pthread_mutex_init
>          w pthread_mutex_lock
>          w pthread_mutex_unlock
>          w pthread_mutex_lock
>          w pthread_mutex_unlock
> 
> Yup,sure is.

Interesting, I sure don't use any mutexes directly. This could be because I
use shared_ptr which uses boost::mutex in MT builds. Maybe, you're using MT
build of the program_options library? 

- Volodya