On Fri, Dec 5, 2008 at 5:23 AM, Alexander Arhipenko <arhipjan@gmail.com> wrote:
On Thu, Dec 4, 2008 at 10:39 PM, Stjepan Rajko <stjepan.rajko@gmail.com> wrote:
Many (almost all?) linked boost libraries don't work as shared libraries when compiled with the -fvisibility=hidden switch on gcc version>=4. I am wondering whether there is interest in making them work under these circumstances, as it might not be too hard to do, and there seems to be some benefit to it.
[snip]
Hi, Stjepan.
There was thread on this topic some time ago, see: http://thread.gmane.org/gmane.comp.lib.boost.devel/177304
Ah, cool.
I had even booked trac ticket and attached a patch (that provide gcc visibility facilities ) to it, see: https://svn.boost.org/trac/boost/ticket/2114
The ticket has no owner - perhaps that is the problem? To quote David Abrahams from the thread above: On Fri, Jul 11, 2008 at 5:11 PM, David Abrahams <dave <at> boostpro.com> wrote:
patches tend to be more impactful when attached to Trac tickets: http://svn.boost.org ;-)
Perhaps Dave would like to take over the patch and make his statement tend to be more true? ;-)
I would really love to see such functionality in boost, but it was silence from the moment of ticket creation (~5 months ago) so I've became silent too ;).
Me too. That ticket would have saved me 5 months of being baffled as to why shared boost libraries don't work on one of my systems.
Regards
P.S. Comments on patch will be really appreciated
I think it's great, and I appreciate the extra bold step of actually changing the compilation of affected libraries to build with hidden visibility (had I made the patch, which I probably never would have gotten to, I would have stopped short of that because of being afraid of breaking something, but you probably know a lot more about all this than me). Three comments: * the darwin toolset is affected the same way as gcc * will the added -fvisibility=hidden cause a problem with gcc<4? * I would prefer the slightly more descriptive macro names discussed in the thread (I think BOOST_SYMBOL_EXPORT is my favorite) Best, Stjepan