[gentoo-user] Re: qt3support: only in /etc/make.conf, never in /etc/portage/package.use

[gentoo-user] Re: qt3support: only in /etc/make.conf, never in /etc/portage/package.use

[Grant Edwards]

On 2010-05-03, Dale <rdalek1967@gmail.com> wrote:

>> After stumbling around this issue on several machines for way too
>> long, I finally stumbled across the solution: don't enable/disable
>> qt3support on a per-package basis.  If you want qt3support put it in
>> /etc/make.conf.
[...]

> I rarely put a USE flag in anything but make.conf.

I tend to -- probably misleading myself that I'm "saving" on something
(disk space, update time, who knows).

> Usually, if I need support for something, it is more than one package
> or that one package will want the support enabled for other packages
> it builds on as well.

I'll have to remember that -- it will probably avoid similar problems
with other subsystems.

> Glad you got it figured out tho.  At least by learning it the hard way, 
> you won't forget it.  ;-)

Sad to say, but I probably will.  Hopefully google will find my post.

Honestly, that's happend to me a couple times: I trip over a problem,
and when looking for the solution Google finds a 6 year old thread (I
started) from the first time I ran into the problem.  It's really
embarassing when your working with somebody else on the problem and
_they_ stumble across that old thread containing the solution.

-- 
Grant

[gentoo-user] Re: qt3support: only in /etc/make.conf, never in /etc/portage/package.use

[Grant Edwards]

On 2010-05-03, David W Noon <dwnoon@ntlworld.com> wrote:
> On Mon, 03 May 2010 03:30:02 +0200, Grant Edwards wrote about
> [gentoo-user] qt3support: only in /etc/make.conf, never
> in /etc/portage/package.use:
>
>>qt3support on a per-package basis.  If you want qt3support put it in
>>/etc/make.conf.  Despite the fact that portage will tell you to enable
>>qt3support for package XYZ, doing just that won't work.
>
> The qt3support USE flag only applies to the Qt packages, not to those
> packages that might require Qt 3.x support.

I know.

> Specifically, it applies to:
>
>   x11-libs/qt-core
>   x11-libs/qt-gui
>   x11-libs/qt-opengl
>   x11-libs/qt-sql
>
> Enable it for all 4 and you will have Qt 3.x support for all Qt app's
> that are satisfied by the backwards compatibility support in Qt 4.x.

The problem is that if you don't have qt3 support, Portage tells you
to enable qt3support for _one_ of those packages.  If you do exactly
what portage tells you (enable it for that one package), then portage
will complain and tell you to disable it for that package.  At least
that's what always seemed to happen for me.

-- 
Grant Edwards               grant.b.edwards        Yow! I'm in direct contact
                                  at               with many advanced fun
                              gmail.com            CONCEPTS.

Re: [gentoo-user] Re: qt3support: only in /etc/make.conf, never in /etc/portage/package.use

[David W Noon]

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On Mon, 03 May 2010 17:30:02 +0200, Grant Edwards wrote about
[gentoo-user] Re: qt3support: only in /etc/make.conf, never
in  /etc/portage/package.use:

>On 2010-05-03, David W Noon <dwnoon@ntlworld.com> wrote:
[snip]
>> Specifically, it applies to:
>>
>>   x11-libs/qt-core
>>   x11-libs/qt-gui
>>   x11-libs/qt-opengl
>>   x11-libs/qt-sql
>>
>> Enable it for all 4 and you will have Qt 3.x support for all Qt app's
>> that are satisfied by the backwards compatibility support in Qt 4.x.
>
>The problem is that if you don't have qt3 support, Portage tells you
>to enable qt3support for _one_ of those packages.  If you do exactly
>what portage tells you (enable it for that one package), then portage
>will complain and tell you to disable it for that package.  At least
>that's what always seemed to happen for me.

I think you need to install the euses command, if you have not already
done so; its package name is the same as its command name.  If you then
run:
   euses qt3support
it will tell you exactly which packages are candidates for the USE
flag.  It sorts out lots of Portage's vagaries in this area.
-- 
Regards,

Dave  [RLU #314465]
======================================================================
dwnoon@ntlworld.com (David W Noon)
======================================================================

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