Re: libstdc++-libc6.2-2.so.3
Daniel Jacobowitz sez:
} On Thu, Oct 24, 2002 at 04:34:07PM -0400, Gregory Seidman wrote:
} > I am developing a program using g++ 3.2. When I added a dynamic_cast, it
} > started segfaulting on it. In searching the web I came up with the
} > following:
} >
} > http://lists.debian.org/debian-gcc/2002/debian-gcc-200205/msg00240.html
} >
} > It suggests that I mght be linking against two different versions of
} > libstdc++ and, indeed, it seems I am (according to ldd). I proceeded to
} > apt-get source --compile libglut3 and install it. That fixed the problem,
} > but ldd gives the same output as before.
} >
} > I don't understand why my program seems to be linked to two versions of
} > libstdc++. It looks like libstdc++.so.5 is the g++ 3.2 library, but there
} > is also that libstdc++-libc6.2-2.so.3 which nothing seems to use. Can
} > anyone explain this extraneous dependency?
} >
} > The output from ldd -v is below.
}
} Presumably something is not linking using GCC 3.2. Are you linking
} using g++ instead of g++-3.2?
Nope:
% which g++
/usr/bin/g++
% ls -l /usr/bin/g++
lrwxrwxrwx 1 root root 7 Sep 16 18:04 /usr/bin/g++ -> g++-3.2*
% g++ --version
g++ (GCC) 3.2.1 20021020 (Debian prerelease)
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.
Note in the ldd -v output that *nothing*, including the executable
itself, depends on that weird libstdc++; it's just there.
} Daniel Jacobowitz
--Greg
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