Re: How to configure gdb to support '--arch=i386' on Mac OS X

Jack Howarth
2009-10-07T23:18:17Z

On Wed, Oct 07, 2009 at 02:22:20PM -0700, Stan Shebs wrote:
> Michael Snyder wrote:
>> Yeahhhh, this isn't going to work.
>>
>> 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). m
> The Mach-O part does work in 7.0, thanks to Tristan and AdaCore (check
> out gdb/machoread.c). I don't think fatness-handling is there, although
> at the Xcode level one has to specifically ask for fat builds anyway, so
> one could avoid that particular obstacle and thus be well-positioned to
> smack one's face into the next wall. :-)
>
> Stan
>

Stan,
I am puzzled about the fact that the current x86_64-apple-darwin10
build of FSF gdb 7.0 is unable to load i386 binaries like x86_64 gdb
can under linux. Do you think this should be possible without resorting
to fat-binaries for darwin?
Jack