On Tue, Nov 23, 2004 at 04:31:46PM +1100, Ian Wienand wrote: > On Mon, Nov 22, 2004 at 05:30:38PM -0800, David Mosberger wrote: > > That would make sense. libstdc++5 calls _Unwind_Resume() which > > is/should be implemented by libunwind.so.7. With older versions of > > GCC, it was implemented as part of libgcc_eh.a/libgcc_s.so. > > Actually, when I checked with ldd I forgot it is recursive, if you > actually look at the DT_NEEDED flags the dependency comes from > /lib/libgcc_s.so.1 > > As I understand it the problem stems from the fact that the libgcc1 > package actually comes from gcc-3.4 (to satisify something or other). > > Poking around gcc-3.4 I think this is caused by PR14925, for which the > fix appeared in the 3.4.3 release, which was built by the autobuilder > on the 20th Nov 2004. This (AFAICS) creates a "dummy" libunwind.so.7 > in the case where the Mosberger (or other) libunwind isn't found. > > I'm no gcc packaging expert, but I applied the attached patch to > gcc-3.4 and at least got libunwind into libgcc1 > > [EMAIL PROTECTED]:/usr/src/tmp/glibc-debian$ dpkg --contents > ./libgcc1_3.4.3-1_ia64.deb > [blah] > -rw-r--r-- root/root 48752 2004-11-23 16:04:31 ./lib/libgcc_s.so.1 > -rw-r--r-- root/root 49904 2004-11-23 16:04:31 ./lib/libunwind.so.7 > > Of course, this means that if you install libunwind7, which lives in > /usr/lib/, /lib gets searched first and the Mosberger libunwind isn't > found. You can't put it in /usr/lib/ because it will conflict with > the libunwind package. So in my fairly uneducated opinion we could > either > > - write a patch similar to attached so libgcc1 includes libunwind.so, > but setup some sort of alternatives system where the libunwind7 > package can override. > > - fix the gcc build to depend on libunwind for ia64 and always use > the Mosberger libunwind. I see there is already a > control.m4.unwind' but it doesn't appear to be used? I think this > has implications for stable which is frozen, too. >
That is a packaging issue. You should create libgcc1_3.4.3-1_ia64.deb which depends on libunwind7.so. libunwind7.so can come from either Mosberger's libunwind or gcc. H.J.