[ARROW-15423] [C++][Dev] Make GDB plugin auto-load friendly

• Type: Task
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 7.0.0
• Component/s: C++, Developer Tools
• Labels: pull-request-available
• External issue URL: https://github.com/apache/arrow/issues/30905
• Assignee: Antoine Pitrou
• Reporter: Antoine Pitrou
• Created: 24/Jan/22 10:26
• Updated: 11/Jan/23 11:37
• Resolved: 24/Jan/22 21:56

Description

Ideally the GDB script should be usable both as an auto-load script and as a target for manual source invocations.

The GLib pretty-printer does it like this:

def register(obj):
    if obj is None:
        obj = gdb

    obj.pretty_printers.append(pretty_printer_lookup)

register(gdb.current_objfile())

Issue Links

• is depended upon by: ARROW-15422 [C++][Packaging] Package gdb plugin
• links to: GitHub Pull Request #12236