Re: Expanding "this" kills my application
Re: Expanding "this" kills my application
- Subject: Re: Expanding "this" kills my application
- From: Scott Tooker <email@hidden>
- Date: Fri, 14 Dec 2007 11:07:01 -0800
On Dec 14, 2007, at 9:06 AM, Ethan Tira-Thompson wrote:
On 08/12/2007, at 9:31 PM, Laurence Harris wrote:
Macintosh:~ Larry$ sudo gdb /usr/libexec/gdb/gdb-i386-apple-darwin
...
Password:
sudo: gdb: command not found
Well, that's a little weird...
There's a couple followups about gdb in /Developer/usr/bin, but I
have an additional copy in regular /usr/bin:
$ ls -l /usr/bin/gdb /usr/libexec/gdb/gdb-i386-apple-darwin /
Developer/usr/bin/gdb /Developer/usr/libexec/gdb/gdb-i386-apple-darwin
-rwxr-xr-x 1 root wheel 4867 Oct 2 00:19 /Developer/usr/bin/
gdb
-rwxr-sr-x 1 root procmod 6073712 Oct 2 00:19 /Developer/usr/
libexec/gdb/gdb-i386-apple-darwin
-rwxr-xr-x 1 root wheel 4867 Oct 2 00:19 /usr/bin/gdb
-rwxr-sr-x 1 root procmod 6073712 Oct 2 00:19 /usr/libexec/gdb/
gdb-i386-apple-darwin
I'm guessing this is also the case for Jim Ingham who suggested the
command... so it might be a good question why it's not true for
Laurence... might be a broken install? /usr got deleted on his
system or something? Or do I (we) have an extra unintentional copy
in /usr that's going to be ignored by future updates and eventually
go out of date and bite me later? :)
In order to support side by side installation of different toolsets,
the Xcode 3.0 developer tools place gdb in <Xcode directory>/usr/bin/
gdb (where <Xcode directory> defaults to /Developer). However, to
provide continued support for makefile-based projects (without
developers needing to update their projects), the 3.0 developer tools
has a "UNIX Development Support" package that installs a copy of the
low-level developer tools into the base system, that's where the /usr/
bin/gdb part is coming from. Currently, the "UNIX Development Support"
package is installed by default when installing Xcode developer tools,
but that could change in future releases.
Scott
Also, I was going to say 'sudo' isn't necessary, but apparently it
is in the specific case of attaching gdb to gdb. Cute trick, I
would've seen the error it gives without 'sudo' and just thought
it's something that can't be done. (that would suck for the gdb
developers! ;)
-ethan
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