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23.3.4 Guile Auto-loading

When a new object file is read (for example, due to the file command, or because the inferior has loaded a shared library), gdb will look for Guile support scripts in two ways: objfile-gdb.scm and the .debug_gdb_scripts section. See Auto-loading extensions.

The auto-loading feature is useful for supplying application-specific debugging commands and scripts.

Auto-loading can be enabled or disabled, and the list of auto-loaded scripts can be printed.

set auto-load guile-scripts [on|off]
Enable or disable the auto-loading of Guile scripts.

show auto-load guile-scripts
Show whether auto-loading of Guile scripts is enabled or disabled.

info auto-load guile-scripts [regexp]
Print the list of all Guile scripts that gdb auto-loaded.

Also printed is the list of Guile scripts that were mentioned in the .debug_gdb_scripts section and were not found. This is useful because their names are not printed when gdb tries to load them and fails. There may be many of them, and printing an error message for each one is problematic.

If regexp is supplied only Guile scripts with matching names are printed.


          (gdb) info auto-load guile-scripts
          Loaded Script
          Yes    scm-section-script.scm
                 full name: /tmp/scm-section-script.scm
          No     my-foo-pretty-printers.scm

When reading an auto-loaded file, gdb sets the current objfile. This is available via the current-objfile procedure (see Objfiles In Guile). This can be useful for registering objfile-specific pretty-printers.