From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from pigeon.gentoo.org ([208.92.234.80] helo=lists.gentoo.org) by finch.gentoo.org with esmtp (Exim 4.60) (envelope-from ) id 1SZU8Y-0000vJ-4W for garchives@archives.gentoo.org; Tue, 29 May 2012 21:39:30 +0000 Received: from pigeon.gentoo.org (localhost [127.0.0.1]) by pigeon.gentoo.org (Postfix) with SMTP id 2D31CE04AB; Tue, 29 May 2012 21:39:14 +0000 (UTC) Received: from mail-we0-f181.google.com (mail-we0-f181.google.com [74.125.82.181]) by pigeon.gentoo.org (Postfix) with ESMTP id D6375E075E for ; Tue, 29 May 2012 21:37:52 +0000 (UTC) Received: by werj55 with SMTP id j55so3430274wer.40 for ; Tue, 29 May 2012 14:37:52 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:in-reply-to:references:from:date:message-id:subject:to :content-type; bh=FlmK2xHEgFIeSYK4ZJ3g8ScFt9qms51av8MQatkhYwI=; b=EoRKbCOEzLijxnn2sBtuOOVFJASaD+Jlddlt0xFjVVGvmnEXStKjiEFOaao/gWuY0T j12oV2feiH22Ws4puJppXjqINt9S7VQTfUa/KHqS6gu0hQbNSkOHI+jVfWsEMNMG697c 90zWKw0BHCiGoCCmfItSXB53i+X1LIfHEazMb036TWBjSLuyhdmtG77QbSPOZxw8tvlw 9oP6YN6GPjLe4Jyx/0dKMrJzsfEYo8CZRrrRvhN3rxvS8bgFBXlhowRb+IpgKdC+sszw 3w0MjZ2iqnNl/cP3jzL60EHxtkhwi1UjeQqqAF8fZMj4AWRLFS+fpKhW+zv/i1Y6O8OT qaXQ== Received: by 10.216.150.209 with SMTP id z59mr247855wej.104.1338327472082; Tue, 29 May 2012 14:37:52 -0700 (PDT) Precedence: bulk List-Post: List-Help: List-Unsubscribe: List-Subscribe: List-Id: Gentoo Linux mail X-BeenThere: gentoo-user@lists.gentoo.org Reply-to: gentoo-user@lists.gentoo.org MIME-Version: 1.0 Received: by 10.180.86.229 with HTTP; Tue, 29 May 2012 14:37:31 -0700 (PDT) In-Reply-To: <20120529230937.13e48154@khamul.example.com> References: <20120529230937.13e48154@khamul.example.com> From: Rafa Griman Date: Tue, 29 May 2012 23:37:31 +0200 Message-ID: Subject: Re: [gentoo-user] revdep-rebuild (gawk) issues To: gentoo-user@lists.gentoo.org Content-Type: text/plain; charset=UTF-8 X-Archives-Salt: c3098b22-e4b3-4d8b-b1ca-9e2edc622198 X-Archives-Hash: 5a26217b2c3cdfe49bd3da6723ec6da0 On Tue, May 29, 2012 at 11:09 PM, Alan McKinnon wrote: > On Tue, 29 May 2012 22:56:07 +0200 > Rafa Griman wrote: > >> Hi Vaeth :) >> >> On Tue, May 29, 2012 at 7:02 PM, Vaeth >> wrote: >> > On Tue, 29 May 2012, Rafa Griman wrote: >> >> >> >> gawk: cmd. line:3: error: Unmatched [ or [^: /[^[:space:]]/ >> > >> > >> > Your gawk is broken. This happens if you emerged gawk with >> > current gcc and aggressive FLAGS like -DNDEBUG or -flto. >> > Not sure whether it is a bug of gawk or gcc. >> >> >> So it seems to be the CFLAGS :( As I said in my previous e-mail, I was >> "experimenting" a bit with them ... I'll be more conservative ;) > > Well, on the one hand the flags don;t seem to be too bad overall, but > on the other hand there's the golden rule of Gentoo: > > Don't stuff around with CFLAGS > > Why not? Well, there's the ricer phenomenon where changed CFLAGS > worsen performance and stability but the user's own bias convinces > him/her that it's actually vastly improved. I know that rule and tried not to be too agressive but seems I was O:) Since it's not my min machine, I was going to experiment (nothing "scientific", just curiosity) trying different options on different partitions and see how they work out. > Some tweaks are perfectly OK, like the multimedia and cpu-specific > stuff (sse, mmx and all their related cousins). These are normally safe > and can give huge gains with video playback. Likewise for the GPU tweaks > once those hit mainline usage. That was mainly the reason: video playback and some other apps (scientific). But nothing serious. > One last tweak, if the code is built on the machine that will run it > (the usual case, replace -march and -mtune with just "-march=native". > It has exactly the same effect but is easier to read, is > self-documenting and allows the compiler to attempt it's best (the > compiler usually does know much better what to do than you do) I totally agree with you: the compiler knos better ;) TIA Rafa