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Editorial Team
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Asked: 2026-06-16T00:19:12+00:00

Because I need a Python-enabled gdb , I installed another version via brew tap

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Because I need a Python-enabled gdb, I installed another version via 

brew tap homebrew/dupes
brew install gdb

I want to use this gdb with Eclipse CDT, where I entered the path to the binary in the Debugging settings. However, launching a program for debugging fails with the following message:

Error in final launch sequence
Failed to execute MI command:
-exec-run
Error message from debugger back end:
Unable to find Mach task port for process-id 39847: (os/kern) failure (0x5).\n (please check gdb is codesigned - see taskgated(8))
Unable to find Mach task port for process-id 39847: (os/kern) failure (0x5).\n (please check gdb is codesigned - see taskgated(8))

What does “codesigned” mean in this context? How can I get this gdbrunning?

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1 Answer

  1. Editorial Team

    It would seem you need to sign the executable. See these links for more information. You should be able to get away with self signing if you don’t plan on redistributing that version of gdb.

    https://developer.apple.com/library/mac/#documentation/Security/Conceptual/CodeSigningGuide/Introduction/Introduction.html

    https://developer.apple.com/library/mac/#documentation/Darwin/Reference/Manpages/man1/codesign.1.html

    Alternatively, you could disable code signing on your system, although this presents a security risk. To do so try running sudo spctl --master-disable in the Terminal.

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