Re: [gentoo-user] GCC : another trap for the unwary
On Sat, Sep 08, 2012 at 10:47:47AM -0400, Philip Webb wrote Incidentally, I've found out why the system creates many TTYs : they're the equivalent of GUI workspaces = desktops, allowing someone working without X to view different files etc. I'm continually struck by the genius of those who created UNIX in 1969 ... From my slightly modified /etc/inittab # TERMINALS c1:12345:respawn:/sbin/agetty 38400 tty1 linux c2:2345:respawn:/sbin/agetty 38400 tty2 linux c3:2345:respawn:/sbin/agetty 38400 tty3 linux c4:2345:respawn:/sbin/agetty 38400 tty4 linux c5:2345:respawn:/sbin/agetty 38400 tty5 linux c6:2345:respawn:/sbin/agetty 38400 tty6 linux c7:2345:respawn:/sbin/agetty 38400 tty7 linux c8:2345:respawn:/sbin/agetty 38400 tty8 linux c9:2345:respawn:/sbin/agetty 38400 tty9 linux This gives me 8 working ttys. I run startx from tty9, so various logging gets spewed to tty9. It's usable in a pinch, but not for normal use. I run X in tty10, and sometimes as a second user in tty11, even with a different resolution and bit depth. tty12 gets kernel logging stuff spewed to it -- Walter Dnes waltd...@waltdnes.org I don't run desktop environments; I run useful applications
[gentoo-user] GCC : another trap for the unwary
My new machine is working compiles lightning-fast : it feels like the driver of a steam engine hurtling down the tracks (I've just finished a biography of J G Robinson, the UK loco designer). I've just recompiled most of the pkgs listed by 'emerge -ep system', but found a few problems : (1) Gcc 4.5.4 seems to require USE=cxx, not the previous -nocxx, which was covered by -* at the beginning of my list in make.conf . 4.5.4 compiled without cxx wouldn't recompile itself with cxx (!), but I found I could get around the problem by emerging 4.4.5 , then using that to recompile 4.5.4 , after which 4.5.4 did recompile itself. It doesn't hurt to have 1 version of Gcc installed. (2) Libxml2 failed : I simply left it till tomorrow to find out why. (3) Groff + Openssh have an X flag : is this useful ? Python has a build flag, which suppressed many deps, but now I'm back in my regular machine 'euses' issues a grim warning vs setting it. (4) The ancient distinction between 'world' / 'system' seems to have degenerated into chaos : some pkgs which clearly sb part of 'system' aren't, while others -- eg virtuals -- have been added. Incidentally, I've found out why the system creates many TTYs : they're the equivalent of GUI workspaces = desktops, allowing someone working without X to view different files etc. I'm continually struck by the genius of those who created UNIX in 1969 ... -- ,, SUPPORT ___//___, Philip Webb ELECTRIC /] [] [] [] [] []| Cities Centre, University of Toronto TRANSIT`-O--O---' purslowatchassdotutorontodotca
Re: [gentoo-user] GCC : another trap for the unwary
On Sat, 8 Sep 2012 10:47:47 -0400 Philip Webb purs...@ca.inter.net wrote: My new machine is working compiles lightning-fast : it feels like the driver of a steam engine hurtling down the tracks (I've just finished a biography of J G Robinson, the UK loco designer). I've just recompiled most of the pkgs listed by 'emerge -ep system', but found a few problems : (1) Gcc 4.5.4 seems to require USE=cxx, not the previous -nocxx, which was covered by -* at the beginning of my list in make.conf . USE=-* is really not a good idea. It undoes all the sane defaults that cascading profiles give you. It is far far better to select the closest most appropriate profile and add any desired flags that are not in the profile. All you have succeeded in doing is removing the sane defaults and forcing yourself to do it all manually. Which is really a whole lot of heavy lifting Gentoo is designed to not require you to do. It's Gentoo, not LFS :-) 4.5.4 compiled without cxx wouldn't recompile itself with cxx (!), but I found I could get around the problem by emerging 4.4.5 , then using that to recompile 4.5.4 , after which 4.5.4 did recompile itself. It doesn't hurt to have 1 version of Gcc installed. A sane profile would have prevented this from happening at all. (2) Libxml2 failed : I simply left it till tomorrow to find out why. (3) Groff + Openssh have an X flag : is this useful ? for groff this builds gxditview, whatever that is. Probably an X man-page viewer. I've never used it, I always run man in a terminal, I suspect most other folk do too. For openssh, the only thing this does is add xauth as a dependency. For a workstation running X, you already have xauth. So you can safely leave X enabled for both packages. Python has a build flag, which suppressed many deps, but now I'm back in my regular machine 'euses' issues a grim warning vs setting it. Yes, you do not want to set USE=build for python. You are not building stage 1 images (4) The ancient distinction between 'world' / 'system' seems to have degenerated into chaos : some pkgs which clearly sb part of 'system' aren't, while others -- eg virtuals -- have been added. This was discussed to death about a year ago. Specific pagers and editors are not in system anymore. Virtuals are. The standard stage 3s give you a default pager and editor, so that if you remove it, portage will add it right back in (and thereby not leave you stranded up shit creek with no paddle in sight). If you don't like nano as you editor and like me can't abide it's existence, then merge vi and unmerge nano. The virtual is still satisfied. All of this is a good thing, it just takes a little thinking and acceptance on your part. Incidentally, I've found out why the system creates many TTYs : they're the equivalent of GUI workspaces = desktops, allowing someone working without X to view different files etc. I'm continually struck by the genius of those who created UNIX in 1969 ... They are there because Unix was from the very start designed to be a multi-user, multi-tasking operating system and each user needs a tty. In the 60s it was unthinkable to do it any other way. I don't think this was any special genius on Thompson's part, it was the norm back then -- Alan McKinnon alan.mckin...@gmail.com
Re: [gentoo-user] GCC : another trap for the unwary
(1) Gcc 4.5.4 seems to require USE=cxx, not the previous -nocxx, which was covered by -* at the beginning of my list in make.conf . http://article.gmane.org/gmane.linux.gentoo.devel/73962 I guess they ended not putting in the check after all :) andrea
Re: [gentoo-user] GCC : another trap for the unwary
On Sat, Sep 08 2012, Alan McKinnon wrote: On Sat, 8 Sep 2012 10:47:47 -0400 Philip Webb purs...@ca.inter.net wrote: (3) Groff + Openssh have an X flag : is this useful ? for groff this builds gxditview, whatever that is. Probably an X man-page viewer. I've never used it, I always run man in a terminal, I suspect most other folk do too. dit normally = device independent troff so this is a viewer for processes troff files (including man pages). allan
