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 ianw@baci:/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. -i
--- orig/gcc-3.4-3.4.3/debian/rules.defs 2004-11-23 16:08:29.263208117 +1100 +++ gcc-3.4-3.4.3/debian/rules.defs 2004-11-23 14:16:47.000000000 +1100 @@ -477,6 +477,11 @@ # Shared libgcc -------------------- with_libgcc := yes with_shared_libgcc := yes +ifeq ($(DEB_TARGET_ARCH),ia64) + with_shared_libunwind := yes +else + with_shared_libunwind := no +endif #ifeq ($(with_common_libs),yes) # with_libgcc := yes --- orig/gcc-3.4-3.4.3/debian/rules.d/binary-libgcc.mk 2004-11-23 16:08:28.424340940 +1100 +++ gcc-3.4-3.4.3/debian/rules.d/binary-libgcc.mk 2004-11-23 14:16:31.000000000 +1100 @@ -38,6 +38,11 @@ DH_COMPAT=2 dh_movefiles -p$(p_lgcc) $(files_lgcc) endif +ifeq ($(with_shared_libunwind),yes) + mv $(d)/$(PF)/lib/libunwind.so.7 $(d)/$(libdir)/. + DH_COMPAT=2 dh_movefiles -p$(p_lgcc) $(libdir)/libunwind.so.7 +endif + dh_installdocs -p$(p_lgcc) dh_installchangelogs -p$(p_lgcc)
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