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slipsnip
n00b
Joined: 12 Apr 2020
Posts: 4
Location: Ontario Canada
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 Posted: Sun Apr 12, 2020 10:30 pm Post subject: unset variables listed by emerge --info | grep ^USE |
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I have reached Base Installation and am partially confused about the USE variable. From the `emerge --info` I can see | Code: | wurst / # emerge --info | grep ^USE
USE="acl amd64 berkdb bzip2 cli crypt dri fortran gdbm iconv ipv6 libtirpc multilib ncurses nls nptl openmp pam pcre readline seccomp split-usr ssl systemd tcpd udev unicode xattr zlib" ABI_X86="64" ADA_TARGET="gnat_2018" ALSA_CARDS="ali5451 als4000 atiixp atiixp-modem bt87x ca0106 cmipci emu10k1x ens1370 ens1371 es1938 es1968 fm801 hda-intel intel8x0 intel8x0m maestro3 trident usb-audio via82xx via82xx-modem ymfpci" APACHE2_MODULES="authn_core authz_core socache_shmcb unixd actions alias auth_basic authn_alias authn_anon authn_dbm authn_default authn_file authz_dbm authz_default authz_groupfile authz_host authz_owner authz_user autoindex cache cgi cgid dav dav_fs dav_lock deflate dir disk_cache env expires ext_filter file_cache filter headers include info log_config logio mem_cache mime mime_magic negotiation rewrite setenvif speling status unique_id userdir usertrack vhost_alias" CALLIGRA_FEATURES="karbon sheets words" COLLECTD_PLUGINS="df interface irq load memory rrdtool swap syslog" CPU_FLAGS_X86="mmx mmxext sse sse2" ELIBC="glibc" GPSD_PROTOCOLS="ashtech aivdm earthmate evermore fv18 garmin garmintxt gpsclock greis isync itrax mtk3301 nmea ntrip navcom oceanserver oldstyle oncore rtcm104v2 rtcm104v3 sirf skytraq superstar2 timing tsip tripmate tnt ublox ubx" INPUT_DEVICES="libinput keyboard mouse" KERNEL="linux" LCD_DEVICES="bayrad cfontz cfontz633 glk hd44780 lb216 lcdm001 mtxorb ncurses text" LIBREOFFICE_EXTENSIONS="presenter-console presenter-minimizer" OFFICE_IMPLEMENTATION="libreoffice" PHP_TARGETS="php7-2" POSTGRES_TARGETS="postgres10 postgres11" PYTHON_SINGLE_TARGET="python3_6" PYTHON_TARGETS="python2_7 python3_6" RUBY_TARGETS="ruby24 ruby25" USERLAND="GNU" VIDEO_CARDS="amdgpu fbdev intel nouveau radeon radeonsi vesa dummy v4l" XTABLES_ADDONS="quota2 psd pknock lscan length2 ipv4options ipset ipp2p iface geoip fuzzy condition tee tarpit sysrq steal rawnat logmark ipmark dhcpmac delude chaos account" |
To me, it looks like several variables, not just USE but also LIBREOFFICE_* and PHP_TARGETS among others. It states that I can make changes to the USE variable or even gain control of it completely from within /etc/portage/make.conf but what about those other variables I mentioned, I know for a fact that I do not want OpenOffice, and I also know that I do not use PHP. How do I unset or remove those? I have an Nvidia graphics card and would like to customize VIDEO_CARDS also so that it does not include intel and possibly includes the proprietary Nvidia driver when I get to the stage of installing that. Is this all done in the same file? Are these just env variables that[/b][/code][/url] I could config in say .zshrc or .bashrc |
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Hu
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Joined: 06 Mar 2007
Posts: 21706
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| Posted: Sun Apr 12, 2020 11:08 pm Post subject: |
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You can control all those variables from /etc/portage/make.conf. If unassigned, Portage sets defaults that are usually helpful, although sometimes (as with VIDEO_CARDS) helpful is achieved by being overly thorough.
The flags for OpenOffice and PHP only matter if you install a package that respects those flags. Leaving them enabled has no effect if you don't use those packages.
You could set the variables in a shell init file, but you should not. Set them in /etc/portage/make.conf, because that is where everyone will expect them to be. |
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slipsnip
n00b
Joined: 12 Apr 2020
Posts: 4
Location: Ontario Canada
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| Posted: Mon Apr 13, 2020 1:21 am Post subject: |
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| Thank you very much @Hu this explains everything I need to know. I much appreciate the help with this. Given what you said about the flags for PHP and OpenOffice I will leave them be since your saying that those flags only matter if I install those packages. I can apreciate Gentoo being thorough and will respect putting any changes in /etc/portage/make.conf regarding the USE variable and any modifications to the flags. |
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Installing Gentoo
