[PATCH] Add WITH_DEBUG_FILES knob to enable separate debug files

[Alfred Perlstein]

On 12/22/12 8:46 AM, Ed Maste wrote:
> When this knob is set standalone debug files for shared objects are
> built and installed in /usr/lib/debug/<so pathname>.debug.  GDB
> searches this path for debug data.
>
> The -g flag is automatically added to CFLAGS if debug files are enabled
> (but the shared objects are still installed stripped, if DEBUG_FLAGS is
> not set).
> ---
> This is a refinement of my earlier change for shared object standalone
> debug.  This patch also includes the following changes:
>
> - Change GDB's standalone debug file path to the default /usr/lib/debug.
>
> - Change debug file extension from 'symbols' to 'debug', in line with
>    GDB's documentation.  I initially followed the kernel build example
>    in choosing .symbols, but .debug more accurately represents the use
>    of these files.
>
This looks promising.  After this patch, running "gdb 
./a.linked.with.libc.so.out" should work without any extra thinking?

I'll give it a shot.

We should enable this flag by default.  A big FreeBSD strength is our 
debugging system.

-Alfred