When a new object file is read, GDB looks for a file named
objfile-gdb.ext (we call it
objfile is the object file’s name and
ext is the file extension for the extension language:
script-name is formed by ensuring that the file name of
is absolute, following all symlinks, and resolving
components, and appending the
If this file exists and is readable, GDB will evaluate it as a
script in the specified extension language.
If this file does not exist, then GDB will look for
script-name file in all of the directories as specified below.
(On MS-Windows/MS-DOS, the drive letter of the executable’s leading
directories is converted to a one-letter subdirectory, i.e.
d:/usr/bin/ is converted to
/d/usr/bin/, because Windows
filesystems disallow colons in file names.)
Note that loading of these files requires an accordingly configured
auto-load safe-path (see Auto-loading safe path).
For object files using
.exe suffix GDB tries to load first the
scripts normally according to its
.exe filename. But if no scripts are
found GDB also tries script filenames matching the object file without
.exe suffix. This
.exe stripping is case insensitive and it
is attempted on any platform. This makes the script filenames compatible
between Unix and MS-Windows hosts.
set auto-load scripts-directory [directories]
Control GDB auto-loaded scripts location. Multiple directory entries
may be delimited by the host platform path separator in use
:’ on Unix, ‘
;’ on MS-Windows and MS-DOS).
Each entry here needs to be covered also by the security setting
set auto-load safe-path (see set auto-load safe-path).
This variable defaults to
$debugdir:$datadir/auto-load. The default
set auto-load safe-path value can be also overriden by GDB
Any reference to
$debugdir will get replaced by
debug-file-directory value (see Separate Debug Files) and any
$datadir will get replaced by
data-directory which is
determined at GDB startup (see Data Files).
$datadir must be placed as a directory component — either alone or
\ directory separators, depending on the host
The list of directories uses path separator (‘
:’ on GNU and Unix
;’ on MS-Windows and MS-DOS) to separate directories, similarly
PATH environment variable.
show auto-load scripts-directory
Show GDB auto-loaded scripts location.
Add an entry (or list of entries) to the list of auto-loaded scripts locations. Multiple entries may be delimited by the host platform path separator in use.
GDB does not track which files it has already auto-loaded this way.
GDB will load the associated script every time the corresponding
objfile is opened.
-gdb.ext file should be careful to avoid errors if it
is evaluated more than once.