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Your binary is in... I forget what it's called -- oh, "mach-o" format. Our (fsf) gdb does not know how to read that file format. And it would be a huge job to port over the changes in apple gdb that tell it how to read mach-o files (besides the fact that they are "fat" files, or at least potentially might be).
I tried Joel Brobecker suggested in adding that option in gdb/main.c.
But my program still won't come up in my debugger.
[Session started at 2009-10-07 13:27:16 -0700.] GNU gdb (GDB) 7.0 Copyright (C) 2009 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html> This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. Type "show copying" and "show warranty" for details. This GDB was configured as "i386-apple-darwin9.7.0". For bug reporting instructions, please see: <http://www.gnu.org/software/gdb/bugs/>. Loading program into debugger… No symbol table is loaded. Use the "file" command. No symbol table is loaded. Use the "file" command. No symbol table is loaded. Use the "file" command. No symbol table is loaded. Use the "file" command. Program loaded. tty /dev/ttys008 (gdb) run =thread-group-created,id="81191" =thread-created,id="1",group-id="81191"
On Wed, Oct 7, 2009 at 1:10 PM, n179911 <n179911@gmail.com> wrote:Thank you. You are right.
The gdb comes with apple has '-arch' option, but gdb 7.0 does not.
$ /usr/bin/gdb --help --translate Debug applications running under translation. -arch i386|armv6|x86_64|ppc Specify a gdb targetting a specific architecture
So should I do what Joel Brobecker suggested in adding that option in gdb/main.c?
Thank you.
On Wed, Oct 7, 2009 at 11:31 AM, Michael Snyder <msnyder@vmware.com> wrote:n179911 wrote:Hi,
I have compiled gdb 7.0 on Mac OS X. And I have configured XCode to use this new version of gdb 7.0.
But when I start debug my XCode project it said gdb can't recognize the option '--arch=i386'. Here is the log of my error:
[Session started at 2009-10-07 11:00:43 -0700.] /Users/n179911/bin/gdb/bin/gdb: unrecognized option `--arch=i386' Use `/Users/n179911/bin/gdb/bin/gdb --help' for a complete list of options.
The Debugger has exited with status 1.The Debugger has exited with status
Can you please tell me how to build gdb to support '--arch-i386' option?I don't think this has ever been a command line option in fsf gdb. Maybe it is one that was added to Apple's version of gdb.
Try running `/Users/n179911/bin/gdb/bin/gdb --help', and then run the same command using your installed gdb that came with Mac OS. My guess is that the Mac version will list "--arch" among the command line options, but the fsf version will not (mine doesn't).
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