gdb/

	Provide $ddir substitution for --with-auto-load-safe-path.
	* NEWS (--with-auto-load-safe-path, --without-auto-load-safe-path): New
	entries.
	* auto-load.c: Include observer.h.
	(auto_load_safe_path_vec_update): Call substitute_path_component for
	each component.  New variable ddir_subst.
	(auto_load_gdb_datadir_changed): New function.
	(set_auto_load_safe_path): Rename DEFAULT_AUTO_LOAD_SAFE_PATH to
	AUTO_LOAD_SAFE_PATH.  New comment.
	(_initialize_auto_load): Rename DEFAULT_AUTO_LOAD_SAFE_PATH to
	AUTO_LOAD_SAFE_PATH.  Install auto_load_gdb_datadir_changed.
	* config.in: Regenerate.
	* configure: Regenerate.
	* configure.ac (--auto-load-safe-path): Rename
	DEFAULT_AUTO_LOAD_SAFE_PATH to AUTO_LOAD_SAFE_PATH.  Default to
	GDB_DATADIR/auto-load.
	* defs.h (substitute_path_component): New declaration.
	* top.c: Include observer.h.
	(set_gdb_datadir): New function.
	(init_main): Install it for "set data-directory".
	* utils.c (substitute_path_component): New function.

gdb/doc/
	Provide $ddir substitution for --with-auto-load-safe-path.
	* gdb.texinfo (Auto-loading): Replace /usr/local by $ddir/auto-load.
	(Auto-loading safe path): Likewise.  Mention the default value,
	$ddir substitution, --with-auto-load-safe-path and
	--without-auto-load-safe-path.
	* observer.texi (gdb_datadir_changed): New.

3 files changed, 28 insertions, 4 deletions

diff --git a/gdb/doc/ChangeLog b/gdb/doc/ChangeLog
index 502a9e5..9cdc2ba 100644
--- a/gdb/doc/ChangeLog
+++ b/gdb/doc/ChangeLog
@@ -1,3 +1,12 @@
+2012-05-11  Jan Kratochvil  <jan.kratochvil@redhat.com>
+
+	Provide $ddir substitution for --with-auto-load-safe-path.
+	* gdb.texinfo (Auto-loading): Replace /usr/local by $ddir/auto-load.
+	(Auto-loading safe path): Likewise.  Mention the default value,
+	$ddir substitution, --with-auto-load-safe-path and
+	--without-auto-load-safe-path.
+	* observer.texi (gdb_datadir_changed): New.
+
 2012-05-09  Jan Kratochvil  <jan.kratochvil@redhat.com>
 
 	* gdb.texinfo (Auto-loading): Wrap too long lines in @smallexample.
diff --git a/gdb/doc/gdb.texinfo b/gdb/doc/gdb.texinfo
index 5d8444c..eab9774 100644
--- a/gdb/doc/gdb.texinfo
+++ b/gdb/doc/gdb.texinfo
@@ -21008,7 +21008,7 @@ local-gdbinit:  Auto-loading of .gdbinit script from current directory
                 is on.
 python-scripts:  Auto-loading of Python scripts is on.
 safe-path:  List of directories from which it is safe to auto-load files
-            is /usr/local.
+            is $ddir/auto-load.
 @end smallexample
 
 @anchor{info auto-load}
@@ -21211,9 +21211,9 @@ get loaded:
 $ ./gdb -q ./gdb
 Reading symbols from /home/user/gdb/gdb...done.
 warning: File "/home/user/gdb/gdb-gdb.gdb" auto-loading has been
-         declined by your `auto-load safe-path' set to "/usr/local".
+         declined by your `auto-load safe-path' set to "$ddir/auto-load".
 warning: File "/home/user/gdb/gdb-gdb.py" auto-loading has been
-         declined by your `auto-load safe-path' set to "/usr/local".
+         declined by your `auto-load safe-path' set to "$ddir/auto-load".
 @end smallexample
 
 The list of trusted directories is controlled by the following commands:
@@ -21245,7 +21245,18 @@ loading and execution of scripts.  Multiple entries may be delimited by the
 host platform path separator in use.
 @end table
 
-Setting this variable to @file{/} disables this security protection.
+This variable defaults to @file{$ddir/auto-load}.  The default @code{set
+auto-load safe-path} value can be also overriden by @value{GDBN} configuration
+option @option{--with-auto-load-safe-path}.
+
+Any used string @file{$ddir} will get replaced by @var{data-directory} which is
+determined at @value{GDBN} startup (@pxref{Data Files}).  @file{$ddir} must be
+be placed as a directory component --- either alone or delimited by @file{/} or
+@file{\} directory separators, depending on the host platform.
+
+Setting this variable to @file{/} disables this security protection,
+corresponding @value{GDBN} configuration option is
+@option{--without-auto-load-safe-path}.
 This variable is supposed to be set to the system directories writable by the
 system superuser only.  Users can add their source directories in init files in
 their home directories (@pxref{Home Directory Init File}).  See also deprecated
diff --git a/gdb/doc/observer.texi b/gdb/doc/observer.texi
index 24233cb..6827ed8 100644
--- a/gdb/doc/observer.texi
+++ b/gdb/doc/observer.texi
@@ -226,6 +226,10 @@ Called before a top-level prompt is displayed.  @var{current_prompt} is
 the current top-level prompt.
 @end deftypefun
 
+@deftypefun void gdb_datadir_changed (void)
+Variable gdb_datadir has been set.  The value may not necessarily change.
+@end deftypefun
+
 @deftypefun void test_notification (int @var{somearg})
 This observer is used for internal testing.  Do not use.  
 See testsuite/gdb.gdb/observer.exp.