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Chris Vine <[EMAIL PROTECTED]> writes:
> On Sunday 26 June 2005 12:15, Christian von Kietzell wrote:
>> Am Sonntag, den 26.06.2005, 04:45 -0600 schrieb John Taber:
>> > My experiences trying out gcc 4.0 vs 3.3.5 with gtkmm 2.6.1
>> > 1) some dialog classes compile as 1/2 the size
>> > 2) most classes have the same nasty looking warning on shared libraries
>> > 3) linking has the warning that gtkmm wants to use libstdc++ so.5
>> > instead of libstdc++ so.6 (running gcc 4.0.1 Debian unstable)
>> > 4) one of my key programs segfaults with 4.0 - runs fine with 3.3.5
>> > (have not tracked down why yet)
>>
>> Some problems are to be expected. In order to use GCC 4.0 all C++
>> libraries will have to be compiled using GCC 4.0, as 4.0 and 3.3.x are
>> using different ABI versions. Debian hasn't made the transition yet.
>
> Are you sure about this? They use different libstdc++ libraries but my
> understanding was the the C++ ABI was not broken between
> gcc-3.3/3.4/4.0.
Changing libstdc++ does break the ABI. Debian is currently using GCC
3.3 with libstdc++5. We will, in a few weeks, switch to GCC 4.0 and
libstdc++6. At this point all the C++ libraries will need to be
rebuilt, and these problems will go away. It's not possible to use
multiple versions of libstdc++ in one program, so linking a library
built against libstdc++5 with a program built with GCC 4.x is going to
be dodgy.
Regards,
Roger
- --
Roger Leigh
Printing on GNU/Linux? http://gimp-print.sourceforge.net/
Debian GNU/Linux http://www.debian.org/
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