Re: '-ax' option in gcc

[Jens Rehsack]

Miguel Mendez wrote:

Hi, subject says it all...

A -CURRENT system as of 11/15:

flynn@christine# cat hello.c
#include <stdio.h>
#include <stdlib.h>

int main(int argc, char **argv)
{
        printf("Hello, foo!\n");
        exit(0);
}

flynn@christine# env CFLAGS="-pg -ax" make hello
cc -pg -ax -march=pentiumpro  hello.c  -o hello
cc1: unrecognized option `-ax'
*** Error code 1

Stop in /usr/home/flynn.

Is the -ax option deprecated? It's still present in the man page. No
problem building such program in a -STABLE box with 2.95

Cheers,

The "-ax" option generates code for profiling. The "-ax" options doesn't appears in the current info documentation, which is an actual one (AFAIK). So I assume, "-ax" is not supported anymore.

The are new options for that in gcc3, eg. -fprofile-arcs (for generating profile information) and -fbranch-probabilities (for optimizing using profile data).

You may also read http://gcc.gnu.org/ for details 'bout the new compiler and http://gcc.gnu.org/news/profiledriven.html for information about the new "Infrastructure for Profile Driven Optimizations".

Bye,
Jens
--
L i W W W i Jens Rehsack
L W W W
L i W W W W i nnn gggg LiWing IT-Services
L i W W W W i n n g g
LLLL i W W i n n g g Friesenstraße 2
gggg 06112 Halle
g
g g
Tel.: +49 - 3 45 - 5 17 05 91 ggg e-Mail: <[EMAIL PROTECTED]>
Fax: +49 - 3 45 - 5 17 05 92 http://www.liwing.de/



To Unsubscribe: send mail to [EMAIL PROTECTED]
with "unsubscribe freebsd-current" in the body of the message