Re: Call for port reports

Neil Conway <neilc@samurai.com>

From: Neil Conway <neilc@samurai.com>
To: Bruce Momjian <pgman@candle.pha.pa.us>
Cc: Kevin Brown <kevin@sysexperts.com>, PostgreSQL Hackers <pgsql-hackers@postgresql.org>
Date: 2003-10-27T09:57:30Z
Lists: pgsql-hackers
On Sat, 2003-10-25 at 21:29, Bruce Momjian wrote:
> configure --enable-debug will use -g for the compile, and with
> optimization.

I'm just curious: would there be any benefit to using -g3 when
--enable-debug is specified and -g3 is supported by gcc? From the gcc
man page:

   -glevel

[...]

   Request debugging information and also use level to specify how
   much information.  The default level is 2.

   Level 1 produces minimal information, enough for making backtraces
   in parts of the program that you don't plan to debug.  This
   includes descriptions of functions and external variables, but no
   information about local variables and no line numbers.

   Level 3 includes extra information, such as all the macro defini-
   tions present in the program.  Some debuggers support macro expan-
   sion when you use -g3.

   Note that in order to avoid confusion between DWARF1 debug level 2,
   and DWARF2, neither -gdwarf nor -gdwarf-2 accept a concatenated
   debug level.  Instead use an additional -glevel option to change
   the debug level for DWARF1 or DWARF2.

-Neil