From owner-freebsd-current Mon Feb 5 14:43:59 1996 Return-Path: owner-current Received: (from root@localhost) by freefall.freebsd.org (8.7.3/8.7.3) id OAA02345 for current-outgoing; Mon, 5 Feb 1996 14:43:59 -0800 (PST) Received: from alpha.xerox.com (alpha.Xerox.COM [13.1.64.93]) by freefall.freebsd.org (8.7.3/8.7.3) with SMTP id OAA02339 for ; Mon, 5 Feb 1996 14:43:57 -0800 (PST) Received: from gemini.sdsp.mc.xerox.com ([13.231.132.20]) by alpha.xerox.com with SMTP id <15985(3)>; Mon, 5 Feb 1996 14:43:16 PST Received: from gnu.mc.xerox.com (gnu.sdsp.mc.xerox.com) by gemini.sdsp.mc.xerox.com (4.1/SMI-4.1) id AA10619; Mon, 5 Feb 96 17:43:01 EST Received: by gnu.mc.xerox.com (4.1/SMI-4.1) id AA01191; Mon, 5 Feb 96 17:42:59 EST Message-Id: <9602052242.AA01191@gnu.mc.xerox.com> Cc: Chien-Ta Lee , freebsd-current@freebsd.org To: To: Subject: Re: make world with -fomit-frame-pointer In-Reply-To: Your message of "Mon, 05 Feb 1996 09:20:08 PST." <9602051720.AA00240@gnu.mc.xerox.com> Date: Mon, 5 Feb 1996 14:42:58 PST From: "Marty Leisner" Sender: owner-current@freebsd.org Precedence: bulk In message <9602051720.AA00240@gnu.mc.xerox.com>, you write: >> >> Hi : >> >> I noticed an gcc option from recently pentium-gcc discussions, >> that's "-fomit-frame-pointer". (I remembered linux often use it) >> I man gcc and it said that the option will make debug impossible. >> I always making my world with "-O2 -m486", is it ok to use this >> option to make world ? How about make kernel ?! >> About make kernel, will "-O2" or "-O2 -m486" make kernel run faster ? >> >> Thanks. >> -- >> >> I didn't read the message fully before I replied... -fomit-frame-pointer is something I've only seen in Linux. With -fomit-frame-pointer, you can't debug code...core dumps are meaningless...Please don't do it!! The only place where it may be useful is in the kernel. marty