Reimplement DJGPP's .gdbinit -> gdb.ini renaming.

This simplifies the .gdbinit filename selection logic.

We have a GDBINIT_FILENAME define that supposedly configurations would
override, but none do so.  Instead, the only configuration that wants
a different file name instead of ".gdbinit", djgpp, does a strcpy over
the gdbinit global array.  This means the array needs to be sized, and
the code that does that is doing the usual
'PATH_MAX/FILENAME_MAX/fallback constant/etc.' mess.

Instead of all that, it's much simpler to have configure specificy the
.gdbinit filename.  As bonus, we can then make the "gdbinit" global
array const.

gdb/
2013-07-01  Pedro Alves  <palves@redhat.com>

	* configure.ac (GDBINIT): Define, depending on host.
	* go32-nat.c (init_go32_ops): Don't override gdbinit here.
	* top.c (PATH_MAX): Delete fallback definition.
	(GDBINIT_FILENAME): Delete.
	(gdbinit): Reimplement as const char array set to the GDBINIT
	string constant.
	* top.h (gdbinit): Make const.

1 files changed, 1 insertions, 1 deletions

diff --git a/gdb/top.h b/gdb/top.h
index 44aefb1..2f70539 100644
--- a/gdb/top.h
+++ b/gdb/top.h
@@ -28,7 +28,7 @@ extern int in_user_command;
 extern int confirm;
 extern char gdb_dirbuf[1024];
 extern int inhibit_gdbinit;
-extern char gdbinit[];
+extern const char gdbinit[];
 
 extern void print_gdb_version (struct ui_file *);
 extern void print_gdb_configuration (struct ui_file *);