From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from lists.gentoo.org ([140.105.134.102] helo=robin.gentoo.org) by nuthatch.gentoo.org with esmtp (Exim 4.60) (envelope-from ) id 1GTnR5-0002FQ-Tm for garchives@archives.gentoo.org; Sat, 30 Sep 2006 22:35:56 +0000 Received: from robin.gentoo.org (localhost [127.0.0.1]) by robin.gentoo.org (8.13.8/8.13.6) with SMTP id k8UMZ2NV002470; Sat, 30 Sep 2006 22:35:02 GMT Received: from smtp.gentoo.org (smtp.gentoo.org [140.211.166.183]) by robin.gentoo.org (8.13.8/8.13.6) with ESMTP id k8UMXAZp000959 for ; Sat, 30 Sep 2006 22:33:11 GMT Received: from localhost (localhost [127.0.0.1]) by smtp.gentoo.org (Postfix) with ESMTP id 134FC64833 for ; Sat, 30 Sep 2006 22:33:10 +0000 (UTC) X-Virus-Scanned: amavisd-new at gentoo.org X-Spam-Score: -2.534 X-Spam-Level: X-Spam-Status: No, score=-2.534 required=5.5 tests=[AWL=0.065, BAYES_00=-2.599] Received: from smtp.gentoo.org ([127.0.0.1]) by localhost (smtp.gentoo.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id mLAoHP4Ha3HI for ; Sat, 30 Sep 2006 22:33:02 +0000 (UTC) Received: from ciao.gmane.org (main.gmane.org [80.91.229.2]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by smtp.gentoo.org (Postfix) with ESMTP id B95BC64824 for ; Sat, 30 Sep 2006 22:33:01 +0000 (UTC) Received: from list by ciao.gmane.org with local (Exim 4.43) id 1GTnOF-0003Mu-LX for gentoo-dev@gentoo.org; Sun, 01 Oct 2006 00:32:59 +0200 Received: from static24-72-113-20.yorkton.accesscomm.ca ([24.72.113.20]) by main.gmane.org with esmtp (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Sun, 01 Oct 2006 00:32:59 +0200 Received: from dirtyepic.sk by static24-72-113-20.yorkton.accesscomm.ca with local (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Sun, 01 Oct 2006 00:32:59 +0200 X-Injected-Via-Gmane: http://gmane.org/ To: gentoo-dev@lists.gentoo.org From: Ryan Hill Subject: [gentoo-dev] Re: [RFC] CFLAGS paragraph for the GWN Date: Sat, 30 Sep 2006 16:37:05 -0600 Message-ID: References: <451ED52E.5030407@bouton.name> <20060930215242.GK26289@curie-int.orbis-terrarum.net> Precedence: bulk List-Post: List-Help: List-Unsubscribe: List-Subscribe: List-Id: Gentoo Linux mail X-BeenThere: gentoo-dev@gentoo.org Reply-to: gentoo-dev@lists.gentoo.org Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha256; protocol="application/pgp-signature"; boundary="------------enig693365F9E72CA6EB24139824" X-Complaints-To: usenet@sea.gmane.org X-Gmane-NNTP-Posting-Host: static24-72-113-20.yorkton.accesscomm.ca User-Agent: Thunderbird 2.0b1pre (X11/20060929) In-Reply-To: <20060930215242.GK26289@curie-int.orbis-terrarum.net> X-Enigmail-Version: 0.94.1.1 OpenPGP: id=9232ECA5 Sender: news X-Archives-Salt: a7a74384-acdb-4f8c-9388-cc9d4d5c5dc4 X-Archives-Hash: 94f1d2bb2c3dcdcfee66d18acf723661 This is an OpenPGP/MIME signed message (RFC 2440 and 3156) --------------enig693365F9E72CA6EB24139824 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable Robin H. Johnson wrote: > On Sat, Sep 30, 2006 at 03:48:53PM -0600, Ryan Hill wrote: >> Lionel Bouton wrote: >>> There are already good resources (http://gentoo-wiki.com/CFLAGS_matri= x >>> was mentioned to me by robbat2) but they may not be advertised enough= =2E >> Most of the info on that page is wrong. > The items on there that note breakages are reasonably correct. > -fvisibility=3Dhidden and -ffast-math DO cause breakages. >=20 > -ftree-loop-linear likewise is broken on GCC4.1 last I checked. I thought he wanted flags that broke upgrading between GCC 3.4 and 4.1. tree-loop-linear wasn't in 3.4. If you want flags that just break stuff with 4.1 you can include -ftree-vectorize. >>> I'd like to propose a paragraph to the GWN editor which presents some= >>> gotchas and good references on the subject. >> Honestly, the only good reference is the Safe CFLAGS page. > The objective here was mainly to point out some things that users are > doing that are causing breakages, leading to bugs that are ultimately > marked INVALID after much tracing. Like using CFLAGS not on the Safe CFLAGS page? ;) Monsieur Spanky wrote: > no way will our documentation link to gentoo-wiki.com It's not documentation, it's the GWN, which has linked to gentoo-wiki before. --de. --------------enig693365F9E72CA6EB24139824 Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.5 (GNU/Linux) iD8DBQFFHvGbyrvh8ZIy7KURCJJpAKDezT/1EqJ9JhyfQjVcTb/15glt/QCeJZls ISfCCPR3GwcD0ywxJ8uPwEM= =kHFs -----END PGP SIGNATURE----- --------------enig693365F9E72CA6EB24139824-- -- gentoo-dev@gentoo.org mailing list