Re: c/2678: gcc/g++ should stick compilation options into the .o file

[Phil Edwards <pedwards at disaster dot jaj dot com>]

The following reply was made to PR c/2678; it has been noted by GNATS.

From: Phil Edwards <pedwards@disaster.jaj.com>
To: rfg@monkeys.com
Cc: gcc-gnats@gcc.gnu.org
Subject: Re: c/2678: gcc/g++ should stick compilation options into the .o file
Date: Sun, 29 Apr 2001 05:56:24 -0400

 On Sat, Apr 28, 2001 at 08:36:49PM -0000, rfg@monkeys.com wrote:
 > And I don't think that it would
 > be very hard to get the front-end gcc/g++ driver to pass
 > ALL compilation options down to cc1 and/or cc1plus.
 
 We already do; see print_switch_values in toplev.c for an example usage.
 In verbose mode, almost all the switches are dumped to stderr; if
 -fverbose-asm is used, they are dumped as comments to the assembly file.
 
 I say "dumped" when they're actually formatted nicely.  And I say "almost"
 all the switches because the language-specific ones can't be seen.
 (I tried cleaning this up once for this specific purpose, but it involved
 touching a lot of files, and nobody was interested.)
 
 
 > They
 > in turn could easily still the options into a suitable ELF
 > section.
 
 I can't see any obvious documentation of .note sections in the gas source,
 and I don't see .command mentioned at all.  I wouldn't mind playing with this
 idea while waiting on compiles, if you can point me towards some usage docs.
 
 
 Phil
 
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