Issue using lldb to debug a moose app

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Benjamin Spencer

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Feb 22, 2018, 2:16:47 PM2/22/18
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I'm using Build 63 of the MOOSE package on a Mac (Sierra), and having an issue trying to run lldb on my MOOSE executable (compiled with clang).

$ which lldb
/opt/moose/llvm-5.0.1/bin/lldb
$ which clang
/opt/moose/llvm-5.0.1/bin/clang


$ lldb ~/projects/myapp/myapp-dbg
(lldb) target create "/Users/fred/projects/myapp/myapp-dbg"
Current executable set to '/Users/fred/projects/myapp/myapp-dbg' (x86_64).
bind: Invalid command `rl_complete'.
(lldb) r -i my_input.i
error: process exited with status -1 (unable to attach)

Any ideas what's going wrong?

Thanks,
Ben

Benjamin Spencer

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Feb 22, 2018, 2:27:38 PM2/22/18
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I found my bug the old fashioned way, so this isn't very urgent, but I'd still like to figure out what's wrong for the next time I need a working debugger.

-Ben

Daniel Schwen

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Feb 22, 2018, 2:36:59 PM2/22/18
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Have you looked at your executable? I've had a few cases where the supposed executable was a libtool wrapper script with the actual executable in the .libs directory. This happens if libtool thinks you need to install some contrib lib first.

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Benjamin Spencer

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Feb 22, 2018, 2:39:02 PM2/22/18
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It's a regular binary executable, and it runs fine outside the debugger.

On Thu, Feb 22, 2018 at 12:36 PM, Daniel Schwen <dan...@schwen.de> wrote:
Have you looked at your executable? I've had a few cases where the supposed executable was a libtool wrapper script with the actual executable in the .libs directory. This happens if libtool thinks you need to install some contrib lib first.

On Thu, Feb 22, 2018, 1:27 PM Benjamin Spencer <benjamin...@inl.gov> wrote:
I found my bug the old fashioned way, so this isn't very urgent, but I'd still like to figure out what's wrong for the next time I need a working debugger.

-Ben


On Thu, Feb 22, 2018 at 12:16 PM, Benjamin Spencer <benjamin...@inl.gov> wrote:
I'm using Build 63 of the MOOSE package on a Mac (Sierra), and having an issue trying to run lldb on my MOOSE executable (compiled with clang).

$ which lldb
/opt/moose/llvm-5.0.1/bin/lldb
$ which clang
/opt/moose/llvm-5.0.1/bin/clang


$ lldb ~/projects/myapp/myapp-dbg
(lldb) target create "/Users/fred/projects/myapp/myapp-dbg"
Current executable set to '/Users/fred/projects/myapp/myapp-dbg' (x86_64).
bind: Invalid command `rl_complete'.
(lldb) r -i my_input.i
error: process exited with status -1 (unable to attach)

Any ideas what's going wrong?

Thanks,
Ben

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Alexander Lindsay

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Feb 22, 2018, 2:57:19 PM2/22/18
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If you're using the package provided lldb, you need to run with sudo

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Benjamin Spencer

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Feb 22, 2018, 3:06:36 PM2/22/18
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Thanks, that did the trick. That seems pretty odd that it needs to be run with sudo...

-Ben

Cody Permann

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Feb 22, 2018, 3:10:19 PM2/22/18
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Yes and no, When you use the Apple supplied lldb, note that it'll prompt you for a password the first time. It's running with elevated privileges. The version that Jason builds in our package from source doesn't have the Apple integration. We'd like to get that figured out, but it's one step at a time for now.

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Derek Gaston

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Feb 22, 2018, 3:17:03 PM2/22/18
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I think we could either setguid lldb - or wrap it in a script that does sudo...

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