Re: [Boost-users] Boost serialization w/gcc 3.2.3 on CentOS 4.4?

From: Chris Weed (chrisweed_at_[hidden])
Date: 2007-04-26 17:30:26

This warning means you have some code built with gcc 3.4+ and some
code built with gcc earlier than gcc 3.4. This will invariably cause
your code to crash:

/usr/bin/ld: warning: libstdc++.so.6, needed by
/usr/local/lib/libboost_serialization-gcc.so, may conflict with
libstdc++.so.5

You need to rebuild all of your code to link against the same libstdc++ library.
Chris

On 4/26/07, matthew.garman_at_[hidden] <matthew.garman_at_[hidden]> wrote:
> We've got an in-house infrastructure that uses the
> boost::serialization library (from boost 1.33).  Thus far, all our
> development has been done using gcc 3.4.5 and 3.4.6 on CentOS 4.3
> and 4.4 (respectively).  (Note that CentOS is practically the same
> as Red Hat Enterprise Linux.)
>
> Now we are forced to integrate with a 3rd party proprietary library
> that was built with gcc 3.2.  So I installed the gcc32 package:
>
> % gcc32 --version
> gcc32 (GCC) 3.2.3 20030502 (Red Hat Linux 3.2.3-47.3)
> Copyright (C) 2002 Free Software Foundation, Inc.
> This is free software; see the source for copying conditions.  There is NO
> warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
>
> If I build my program with gcc 3.2 and link against boost built with
> gcc 3.4, my program segfaults as soon as the first
> boot::serialization method is called.
>
> So I tried to rebuild boost using gcc 3.2.  I did this by running
> the configure script, then modifying the "BJAM_CONFIG" variable of
> the top-level Makefile:
>
> BJAM_CONFIG= -sPYTHON_ROOT=/usr -sPYTHON_VERSION=2.3 \
>     -sGXX=g++32 -sGCC=gcc32
>
> Then I ran make.  First thing I noticed is that there were a *lot*
> of warnings, although the library did build.  Same thing when
> building my own program: lots of warnings surrounding the boost
> stuff, but it does build.  Also, when linking, I get this warning:
>
> /usr/bin/ld: warning: libstdc++.so.6, needed by
> /usr/local/lib/libboost_serialization-gcc.so, may conflict with
> libstdc++.so.5
>
> Unfortunately, the program still crashes when it gets to the
> boost::serialization stuff.
>
> I looked at the Boost compatibility matrix, and as far as I can
> tell, gcc 3.2 is supported (though I definitely could have misread
> something!).  So my hunch is that I've got a problem with my build
> process... but I'm not sure where.
>
> I know I've left out some details; please let me know what other
> info I need to provide.  Suggestions or general "things to try" are
> welcome as well!
>
> Thanks,
> Matt
>
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