Re: [BC] Link libs with -Bsymbolic

[Tom Tromey <tromey at redhat dot com>]

>>>>> "Andrew" == Andrew Haley <aph@redhat.com> writes:

Andrew> I wonder if we will ever need to turn -Bsymbolic off?  I
Andrew> haven't used it when linking libgcj.so itself: it may not be
Andrew> absolutely necessary, and I'm being cautious.

I think we need to consider the use cases we want to support.

E.g., if we want to support replacing a single class from one of the
.so files, then we need to compile the objects in that .so with
-findirect-dispatch (and then I suppose -Bsymbolic becomes
irrelevant).

I've been assuming that for 4.0 we would stick pretty closely to what
we've done all along and not make changes to how our shared libraries
are built or linked (or split into pieces).  (In other words, not
merge the library splitting patch from the GUI branch.)  It is pretty
late to consider big changes here, and the indirect dispatch code is
new enough that I'd rather not enable it for the core.

For 4.1, though, it makes sense to look at this.  It might not all be
user-driven, for instance I suspect the AWT/Swing folks would like to
have a separate .so for AWT and for Swing so that rebuilds in this
area are faster.

Tom