getting runtime options into your code.

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Article #49520

#49520

From: Marty Leisner 25733
Date: Thu, 20 Jan 1994 16:42

38 lines
1903 bytes

It would be incredibly useful when building systems if gcc would define a predefined
macro to get the optimization options.

Right now I'm doing something like:
#ifdef __GNUC__
#ifdef __VERSION__
#define _C_VERSION " gcc " __VERSION__
#else
#define _C_VERSION " gcc " __GNUC__ " no version "
#endif
#else
#define _C_VERSION "not GNUC"
#endif
 
#ifdef __OPTIMIZE__
#define _OPT_STRING " optimized"
#else
#define _OPT_STRING ""
#endif
 
#ifndef COMPILED_AT
#define COMPILED_AT  "$I" "d: " __FILE__ " compiled at " __DATE__ " " __TIME__  _C_VERSION _OPT_STRING  " $"
#endif
 


Through ident and RCS, I get:
     $Id: ipc_make_sockname.c,v 1.2 1994/01/17 19:32:37 leisner Exp $
     $Id: ipc_make_sockname.c compiled at Jan 20 1994 11:05:58 gcc 2.4.5 optimized $

But instead of __OPTIMIZE__, I'd rather have a string for the optimization options
(so I can easily compare what different optimizations do).

--
marty
leisner@sdsp.mc.xerox.com leisner.henr801c@xerox.com 
Member of the League for Programming Freedom
"I just know I'm a better manager when I have Joe DiMaggio in center field" -- Casey Stengel

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From: leisner@draco (Marty Leisner 25733)
Newsgroups: gnu.gcc.help
Subject: getting runtime options into your code.
Date: 20 Jan 1994 16:42:34 GMT
Organization: xerox
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