Gentoo Archives: gentoo-user

From: covici@××××××××××.com
To: gentoo-user@l.g.o
Subject: Re: [gentoo-user] Re: multilib - do I need it?
Date: Sat, 04 Apr 2015 04:47:43
Message-Id: 26705.1428122852@ccs.covici.com
In Reply to: Re: [gentoo-user] Re: multilib - do I need it? by Alan McKinnon
1 Alan McKinnon <alan.mckinnon@×××××.com> wrote:
2
3 > On 03/04/2015 18:48, covici@××××××××××.com wrote:
4 > > Grant Edwards <grant.b.edwards@×××××.com> wrote:
5 > >
6 > >> On 2015-04-03, Walter Dnes <waltdnes@××××××××.org> wrote:
7 > >>> On Thu, Apr 02, 2015 at 02:12:40PM -0300, Francisco Ares wrote
8 > >>>> Hi,
9 > >>>>
10 > >>>> How does one know previously which packages will require 32 bit ABI ?
11 > >>>>
12 > >>>> I have two systems (among others) to consider: one is very simple, built
13 > >>>> using as fewer packages as possible, it is the development system for an
14 > >>>> embedded equipment, and it is 64 bit ABI only - no multilib; the other is
15 > >>>> a general purpose workstation, with lots of packages, and someday, by some
16 > >>>> forgotten reason, I needed to install emul-linux-* .
17 > >>>
18 > >>> Can you attach your /var/lib/portage/world file to a post here? I
19 > >>> assume you have nothing embarressing in it. Almost all applications
20 > >>> that used to require 32-bit emulation now run natively on 64-bit
21 > >>> no-multilib. I recently upgraded a 7+ year old machine from 32-bit
22 > >>> Gentoo to 64-bit-only Gentoo (no-multilib) and I don't have any apps
23 > >>> with problems as 64-bit only.
24 > >>
25 > >> The only two 32-bit apps I've run into on my various XFCE machines are
26 > >> grub-legacy (which requires a 32-bit ncurses lib), and acroread (which
27 > >> requires 100+ 32-bit libraries).
28 > >
29 > > hmmm, I have 7 emul-linux86 packages, but portage did not offer to
30 > > replace them when I checked today for a world update -- I didn't want to
31 > > remove them manually, I thought it might do more harm than good. I am
32 > > not sure whether I need any 32-bit libraries, although I do have
33 > > multilib enabled, but I wonder about those emul-linux-x86 packages. Any
34 > > way for me to tell what is going on here such as dependencies on 32-bit
35 > > libraries?
36 >
37 > It's safe to remove emul-linux-x86-* to see what happens next; and
38 > fixing it is trivial. So:
39 >
40 > - remove those packages
41 > - fiddle make.conf
42 > - emerge world using -p and inspect the list
43 >
44 > If you don;t like what you see, revert your edits and remerge
45 > emul-linux-x86-*. They are binary packages so the emerge is rather
46 > quick. As long as you didn't re-merge anything else in the interim,
47 > nothing will break
48
49 OK, thanks.
50
51 --
52 Your life is like a penny. You're going to lose it. The question is:
53 How do
54 you spend it?
55
56 John Covici
57 covici@××××××××××.com