[gentoo-user] tunning use flag

[gentoo-user] tunning use flag

[Pawel K]

Hello

I'm not sure whether I understand the USE flag
properly.

I'm using fluxbox as X window manager. I'm not using
kde and gnome and I'm not interested in those
packages.

Can I remove support for them in my /etc/make.conf by
specifying:
USE="-kde -gnome -qt -gtk -gtk+"

Will ethereal work after that changes. It listens to
gtk flag. Will it be compiled with gtk support ins
spite of my "-gtk" specification.

Thank You for help

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Re: [gentoo-user] tunning use flag

[Gogiel]

Pawel K wrote:
> Hello
> 
> I'm not sure whether I understand the USE flag
> properly.
> 
> I'm using fluxbox as X window manager. I'm not using
> kde and gnome and I'm not interested in those
> packages.
> 
> Can I remove support for them in my /etc/make.conf by
> specifying:
> USE="-kde -gnome -qt -gtk -gtk+"
> 
> Will ethereal work after that changes. It listens to
> gtk flag. Will it be compiled with gtk support ins
> spite of my "-gtk" specification.
> 
> Thank You for help
> 
After that you will be able to use only tethereal.
If you want to use gtk ethereal
# echo "net-analyzer/ethereal gtk" >> /etc/portage/package.use

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Re: [gentoo-user] tunning use flag

[Joshua Schmidlkofer]

gtk != gnome.  Gnome uses GTK, but so does XFCE, Gimp, Ethereal, etc. 
So, you may not want -gtk and -gtk+ in your main packages.  That said
Gogiel is absolutley correct.

js


On 4/12/06, Gogiel <gogiel1@op.pl> wrote:
> Pawel K wrote:
> > Hello
> >
> > I'm not sure whether I understand the USE flag
> > properly.
> >
> > I'm using fluxbox as X window manager. I'm not using
> > kde and gnome and I'm not interested in those
> > packages.
> >
> > Can I remove support for them in my /etc/make.conf by
> > specifying:
> > USE="-kde -gnome -qt -gtk -gtk+"
> >
> > Will ethereal work after that changes. It listens to
> > gtk flag. Will it be compiled with gtk support ins
> > spite of my "-gtk" specification.
> >
> > Thank You for help
> >
> After that you will be able to use only tethereal.
> If you want to use gtk ethereal
> # echo "net-analyzer/ethereal gtk" >> /etc/portage/package.use
>
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> --
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>
>

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Re: [gentoo-user] tunning use flag

[Richard Fish]

On 4/12/06, Pawel K <pawlaczus@yahoo.com> wrote:
> Hello
>
> I'm not sure whether I understand the USE flag
> properly.
>
> I'm using fluxbox as X window manager. I'm not using
> kde and gnome and I'm not interested in those
> packages.

USE flags turn on optional support (and dependancies) in packages.  So
for those packages with optional kde or gnome support, disabling those
use flags will build the packages without that support.

But they do not effect packages with fixed dependancies.  For example,
kdevelop requires kdelibs, so if you merge kdevelop, you will end up
with kdelibs installed as well, regardless of the kde use flag
setting.

For the qt and gtk flags, the general effect is that you do not get
any optional GUI interfaces for the packages.  As has been pointed
out, merging ethereal without gtk gives you only tethereal. 
Similarly, merging mplayer without gtk support gives you only mplayer,
not gmplayer.  Xine gives you only xine, not gxine.  And so on.

If you really don't want those other interfaces, then disable the
flags.  You can always enable them again for a specific package with
/etc/portage/package.use.

Also you might want to get in the habit of running emerge with the
--pretend and --verbose options.  That will show you what use flags
are available for a package, and if you see gtk or qt, you can
investigate further what you lose by disabling them.

-Richard

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Re: [gentoo-user] tunning use flag

[Pawel K]

> That will show you
> what use flags
> are available for a package, and if you see gtk or
> qt, you can
> investigate further what you lose by disabling them.

How can I find out what I loose by disabling specific
flag ?
equery uses <pks>
shows general info only.

I looked into:
fluxbox-0.9.14-r1.ebuild

and I found:
src_compile() {
    econf \
...
        $(use_enable kde) \
...

and that's all about e.g. "kde" flag.


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Re: [gentoo-user] tunning use flag

[Neil Bothwick]

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On Thu, 13 Apr 2006 07:44:23 -0700 (PDT), Pawel K wrote:

> How can I find out what I loose by disabling specific
> flag ?
> equery uses <pks>
> shows general info only.

USE="-flag" emerge -pvuDN world


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Re: [gentoo-user] tunning use flag

[Richard Fish]

On 4/13/06, Pawel K <pawlaczus@yahoo.com> wrote:
> How can I find out what I loose by disabling specific
> flag ?
> equery uses <pks>
> shows general info only.

If you are exceptionally lucky, "grep -e "^kde " -e ":kde"
/usr/portage/profiles/use.*desc" will tell you what it does, or you
can determine this from the ebuild comments or script.

If you are very lucky, a google search with the appropriate terms will
tell you.  You need to know that "econf ... $(use_enable kde)
translates to "./configure ... --enable-kde".  So a google for
"fluxbox configure --enable-kde" might help.

If you are a little lucky, there will be a README or INSTALL file in
the source tarball that will explain exactly what the configure
options do.

If you have any luck at all, you can interrupt the compile process, cd
to the package build directory in /var/tmp/portage, and run
./configure --help to get documentation about what the option does.

But in the normal case, you have to read the source to really
understand what impact a use flag has.  Or experiment with it on and
off.

Cheers,
-Richard

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Re: [gentoo-user] tunning use flag

[Mick]

In the fluxbox case it integrates KDE with fluxbox.  So, when you run
startkde from a terminal in fluxbox, or you launch KDE applications,
you get System Tray notifications nicely fitting in the fluxbox slit.

On 13/04/06, Richard Fish <bigfish@asmallpond.org> wrote:
> On 4/13/06, Pawel K <pawlaczus@yahoo.com> wrote:
> > How can I find out what I loose by disabling specific
> > flag ?
> > equery uses <pks>
> > shows general info only.
>
> If you are exceptionally lucky, "grep -e "^kde " -e ":kde"
> /usr/portage/profiles/use.*desc" will tell you what it does, or you
> can determine this from the ebuild comments or script.
>
> If you are very lucky, a google search with the appropriate terms will
> tell you.  You need to know that "econf ... $(use_enable kde)
> translates to "./configure ... --enable-kde".  So a google for
> "fluxbox configure --enable-kde" might help.
>
> If you are a little lucky, there will be a README or INSTALL file in
> the source tarball that will explain exactly what the configure
> options do.
>
> If you have any luck at all, you can interrupt the compile process, cd
> to the package build directory in /var/tmp/portage, and run
> ./configure --help to get documentation about what the option does.
>
> But in the normal case, you have to read the source to really
> understand what impact a use flag has.  Or experiment with it on and
> off.
>
> Cheers,
> -Richard
>
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>
>


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