[lldb-dev] Setting shared library search paths and core files

Pavel Labath via lldb-dev lldb-dev at lists.llvm.org
Fri May 5 02:43:41 PDT 2017

Core file debugging is not that well supported right now. I have made
a couple of fixes from time to time, mainly because I see it as a
possibility for testing other parts of the debugger, but I don't think
it get's much use and testing (on linux anyway).

I *think* you might be able to get it working by adding paths to all
libraries included in the core dump into your target.exec-search-paths
(so something like /sysroot/lib, /sysroot/usr/lib, ...), but I don't
guarantee anything. the --sysroot thingy sounds like the most
straight-forward interface, so it would be awesome if you could get
that working.

On 4 May 2017 at 18:57, Scott Smith via lldb-dev
<lldb-dev at lists.llvm.org> wrote:
> Before I dive into the code to see if there's a bug, I wanted to see if I
> was just doing it wrong.
> I have an application with a different libc, etc than the machine I'm
> running the debugger on.  The application also has a bunch of libraries that
> simply don't exist in the normal location on my dev machine.  I do have
> everything extracted in a subdirectory with proper relative paths (i.e.
> my_extract/lib/..., my_extract/opt/..., my_extract/usr/..., etc).
> With gdb, I'd do something like:
> set sysroot .
> file opt/my_cool_program
> core my_broken_coredump
> then everything would work.
> I've tried
> (http://lists.llvm.org/pipermail/lldb-dev/2016-January/009233.html):
> platform select --sysroot . host  (also tried remote-linux, that didn't work
> either)
> target create opt/my_cool_program --core my_broken_coredump
> or based on:
> http://lists.llvm.org/pipermail/lldb-dev/2016-January/009235.html
> setting set target.exec-search-paths .
> target create opt/my_cool_program --core my_broken_coredump
> or, based on:
> http://lists.llvm.org/pipermail/lldb-dev/2016-January/009236.html
> target create opt/my_cool_program --core my_broken_coredump
> target modules search-paths add /lib ./lib
> ...
> None of them seem to work.  I tried lldb-3.9 in case any recent changes
> affected this functionality.
> Is there a more correct way to do this?  Or does this seem like a bug?
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