bf1783 at googlemail.com
Mon Aug 6 07:30:20 UTC 2012
On 8/6/12, Doug Barton <dougb at freebsd.org> wrote:
> On 07/31/2012 08:57, Gerald Pfeifer wrote:
>> On Sun, 29 Jul 2012, Doug Barton wrote:
<skipping quibbles and polemics>
> Just to be clear, you compile stuff with gcc 4.6, that is linked against
> libgcc, and then you update to 4.7, with a new libgcc, and everything
> still works? If so, that's great, I'm glad to hear that it's not a problem.
For the most part, yes. The upstream developers have a policy of
avoiding version bumps for the runtime support libraries when
possible, and instead using symbol versioning to maintain
backward-compatibility. Only a very few pieces of software using
libgcj or libobjc will have to be recompiled. For default packages,
IIRC, that is only print/pdftk. Of course, it will be to the
advantage of most users to recompile their packages with the new
version of the compiler.
>> In other words, if there is a challenge it's not GCC per se, more
>> our packaging of it (and some work Bapt is doing on the packaging
>> infrastructure should help with that).
> I don't know of any magic solutions in the works that will solve the
> separation of libgcc from the compiler. :)
I think Gerald was referring to Bapt's plan to make it easier to make
multiple packages from a single port, so that those who used packages
exclusively could install a package consisting of only the runtime
support libraries, rather than the whole compiler suite. I had
patches to do this even without pkgng, but it made things a little
more complicated, and didn't seem to be a high priority, so I didn't
pursue it. If people feel that it is important, I could work with
Gerald to revive that, or use a knob like that of ports/155408 with
static linking to allow users to remove the runtime dependency for a
lot of software, at the cost of some added overhead from redundancies.
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