macOS gdb-apple from MacPorts on High Sierra?

[ojfd]

Does anyone here have successfully installed and have working gdb-apple from MacPorts on High Sierra?
I'm running in circles for the 4th hour with no success whatsoever. I've tried every suggestion that I was able to google, but still end up with "Unable to find Mach task port for process-id xxx: (os/kern) failure (0x5)"

 

[casperes1996]

Sounds like you need to codesign with the debugger entitlements. Have you tried that yet?

 

[ojfd]

Well, I've tried everything possible.

This: https://gist.github.com/danisfermi/17d6c0078a2fd4c6ee818c954d2de13c

and this: https://timnash.co.uk/getting-gdb-to-semi-reliably-work-on-mojave-macos/

Invested ~ 8 hours in it and there's still no go. Stiil the same result.

Note. I'm trying to install gdb-apple That's the port of old GNU gdb 6.3.50 from here:

Install gdb-apple on macOS with MacPorts

ports.macports.org

not the latest gdb https://ports.macports.org/port/gdb/

In contrast to newer gdb, the older version plays nicely with gdbinit by https://reverse.put.as/
I have it working without problems in Yosemite, but in High Sierra I've met with some kind of resistance or compatibility problems, hence my initial post.

 

[casperes1996]

Ah; Then I have no knowledge. I've only built and used latest GDB and even that wasn't exactly a smooth journey

 

[f54da]

Almost certainly related to codesigning/entitlement for task_for_pid. You mentioned you already tried adding entitlement though, so I'm not sure... seems like it might be less effort to forward-port gdbinit? Fwiw there's also lldbinit some other guys made.

 

[ojfd]

All I wanted to do is quickly check where and maybe why one particular app crashes with SIGABORT in High Sierra. I certainly don't want to start learning lldb or porting something. I give up for the time being.

 

[f54da]

Isn't using lldb the quickest option if that's all you need? Just run it under lldb, then after it halts do a "bt" and you get a backtrace. Here's a page that gives you lldb equivalent of gdb commands https://lldb.llvm.org/use/map.html. LLDB's objective-c support is also probably more robust than gdb's so separately it's worth learning for that on its own.

 

[ojfd]

Thanks, f54da, I'll give it a try.