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holymacaroni
n00b
Joined: 06 Mar 2003
Posts: 63
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 Posted: Thu Jun 19, 2003 7:34 pm Post subject: New User Needs Assistance |
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| hi, i just installed gentoo and everything seems to be working great. i read through the emerge intro doc, but i have a quick question. i just started my installation of xfree-4.3.0-r3, but i forgot to uncomment the USE="gnome" flag in my /etc/make.conf file. so if i wait until xfree is done compiling and uncomment the USE flag in my make.conf file, could i use the upgrade feature of emerge to reinstall X using the new USE flags? i really don't want to have to unmerge X and its dependencies and have to start all over. thanks! |
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dberkholz
Retired Dev
Joined: 18 Mar 2003
Posts: 1008
Location: Minneapolis, MN, USA
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| Posted: Thu Jun 19, 2003 7:54 pm Post subject: Re: New User Needs Assistance |
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| holymacaroni wrote: | | hi, i just installed gentoo and everything seems to be working great. i read through the emerge intro doc, but i have a quick question. i just started my installation of xfree-4.3.0-r3, but i forgot to uncomment the USE="gnome" flag in my /etc/make.conf file. so if i wait until xfree is done compiling and uncomment the USE flag in my make.conf file, could i use the upgrade feature of emerge to reinstall X using the new USE flags? i really don't want to have to unmerge X and its dependencies and have to start all over. thanks! |
xfree doesn't have a USE="gnome" option...
| Code: | $ emerge -vp xfree
These are the packages that I would merge, in order:
Calculating dependencies ...done!
[ebuild R ] x11-base/xfree-4.3.0-r3 -3dfx -sse +mmx +3dnow +xml2 +truetype -nls -cjk -doc -ipv6 |
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holymacaroni
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Joined: 06 Mar 2003
Posts: 63
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| Posted: Thu Jun 19, 2003 7:56 pm Post subject: |
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| oh ok, thanks. still learning the in's and out's. |
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Pythonhead
Developer
Joined: 16 Dec 2002
Posts: 1801
Location: Redondo Beach, Republic of Calif.
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| Posted: Thu Jun 19, 2003 10:23 pm Post subject: |
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You can find out what USE flags were enabled with:
| Code: | | etcat -u 'x11-base/xfree' |
etcat is in the gentoolkit package. |
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hook
Veteran
Joined: 23 Oct 2002
Posts: 1398
Location: Ljubljana, Slovenia
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| Posted: Fri Jun 20, 2003 2:34 am Post subject: |
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you can change the USE flags whenever you want to without any consequences (that i'd know of)
maybe it'd be a great time to quickly explain what the USE flags actually do ...i think that's best done on an example.
USE="gnome gtk -kde -qt" (i have it the other way around  ) makes the same result with emerge, as would have make --with-gnome --with-gtk --without-kde --without-qt
for example this USE flags would with let's say emerging mplayer disable the qt and kde compatibility of the app if it exists (unless the app ebuild forces it, so it's safe) and enable gtk and gnome compatibility if it exists
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holymacaroni
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Joined: 06 Mar 2003
Posts: 63
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| Posted: Fri Jun 20, 2003 5:01 am Post subject: |
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yeah, i understand how the USE flags apply in regard to the /etc/make.conf file.
what i'm curious about is what the significance of the flags listed are when i do a -vp (i know p is just the pretend option). using the example above:
$ emerge -vp xfree
These are the packages that I would merge, in order:
Calculating dependencies ...done!
[ebuild R ] x11-base/xfree-4.3.0-r3 -3dfx -sse +mmx +3dnow +xml2 +truetype -nls -cjk -doc -ipv6
what is the difference between the flags with - and the ones with + in front of them in regard to retrieving them using the -vp option from the ebuilds? |
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bsolar
Bodhisattva
Joined: 12 Jan 2003
Posts: 2764
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| Posted: Fri Jun 20, 2003 5:06 am Post subject: |
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| holymacaroni wrote: | $ emerge -vp xfree
These are the packages that I would merge, in order:
Calculating dependencies ...done!
[ebuild R ] x11-base/xfree-4.3.0-r3 -3dfx -sse +mmx +3dnow +xml2 +truetype -nls -cjk -doc -ipv6
what is the difference between the flags with - and the ones with + in front of them in regard to retrieving them using the -vp option from the ebuilds? |
Al the flags that appear affect the package, the ones with a '-' are disabled, the ones with a '+' enabled. In the example you won't ave support e.g. for ipv6 but you will have support for truetype.
Also note that USE flags not only influence the compilation of a package but might add/remove packages otherwise not needed/needed as dependency.
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I may not agree with what you say, but I'll defend to the death your right to say it. |
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zbert
n00b
Joined: 01 Jul 2003
Posts: 37
Location: New York
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| Posted: Thu Aug 28, 2003 3:23 am Post subject: |
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| bsolar wrote: |
Al the flags that appear affect the package, the ones with a '-' are disabled, the ones with a '+' enabled. In the example you won't ave support e.g. for ipv6 but you will have support for truetype.
Also note that USE flags not only influence the compilation of a package but might add/remove packages otherwise not needed/needed as dependency. |
After performing an emerge -pv packagename, do the USE flags shown affect the compiling of the program automatically or do I have to manually set the recommended use flags in /etc/make.conf?
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