On Wed, Oct 12, 2011 at 4:14 AM, Ken Werner <[email protected]> wrote: > On 09/24/2011 11:46 PM, Fabio wrote: >> >> Hi all, >> I am trying to build glibc and link libunwind to get a backtrace at >> the beginning of some glibc function like strcpy for example but I >> can't get them to build. >> I include -lunwind in the CFLAGS and I export >> LD_LIBRARY_PATH=/usr/local/lib, but when it comes to build ld.so it >> fails: >> >> /home/wintermute/tesi/glibc/2.14/custom/glibc-2.14/string/strcpy.c:43: >> undefined reference to `_Ux86_getcontext' >> /home/wintermute/tesi/glibc/2.14/custom/glibc-2.14/string/strcpy.c:44: >> undefined reference to `_ULx86_init_local' >> collect2: ld returned 1 exit status >> >> Am I missing something? Sorry for asking a dumb question and thanks in >> advance. > > I suspect you're on a system where the linker does not pull in indirect > shared libs (the default behavior of recent Debian or Fedora based distros). > I had a similar issue - see: > http://lists.gnu.org/archive/html/libunwind-devel/2011-03/msg00002.html. > You're probably just missing to link against libunwind-x86_64.so. Adding > -lunwind-x86 to your CLFAGS/LDFLAGS should be sufficient.
The link failure is while linking ld.so itself. It better not use libunwind-x86_64.so (or any other shared library) for obvious reasons. -- Paul Pluzhnikov _______________________________________________ Libunwind-devel mailing list [email protected] https://lists.nongnu.org/mailman/listinfo/libunwind-devel
