如何知道一个已安装的package用了哪些use flags?

HaToTo

如题, 不论现在的use 设定如何. 遇上件烦心事. 昨天用--newuse 升级部分package, 结果中间停了电. 今早重来, 怀疑系统选定了已经重编译过的.

Fleta

1. $ etcat -u mozilla
2. [ Colour Code : set unset ]
3. [ Legend   : (U) Col 1 - Current USE flags        ]
4. [          : (I) Col 2 - Installed With USE flags ]
6. U I [ Found these USE variables in : net-www/mozilla-1.7.3-r2 ]
7. + + java       : Adds support for Java
8. + + crypt      : Add support for encryption -- using mcrypt or gpg where applicable
9. + + ssl        : Adds support for Secure Socket Layer connections
10. + + moznomail  : Disable building mozilla's mail client
11. - - debug      : Tells configure and the makefiles to build for debugging. Effects vary across packages, but generally it will at least add -g to CFLAGS. Remember to set FEATURES=nostrip too
12. + + java       : Adds support for Java
13. + + gnome      : Adds GNOME support
14. - - ldap       : Adds LDAP support (Lightweight Directory Access Protocol)
15. - - debug      : Tells configure and the makefiles to build for debugging. Effects vary across packages, but generally it will at least add -g to CFLAGS. Remember to set FEATURES=nostrip too
16. - - xinerama   : Add support for the xinerama X11 extension, which allows you to stretch your display across multiple monitors
17. + + xprint     : Support for xprint, [url]http://www.mozilla.org/projects/xprint/[/url]
18. - - moznoxft   : Disable XFT support in mozilla (also firefox, thunderbird)
19. - - mozdevelop : Enable features for web developers (e.g. Venkman)
20. - - mozxmlterm : Enable mozilla's XML-based command-line terminal
21. - - mozsvg     : Enable SVG support in mozilla and firefox

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HaToTo

太感谢了。这好像是gentoolkit里的？幸好我已经emerge了， 不好意思没仔细看文档

blackwhite

equery uses mplayer
[ Colour Code : set unset ]
[ Legend    : (U) Col 1 - Current USE flags        ]
[           : (I) Col 2 - Installed With USE flags ]

U I [ Found these USE variables in : media-video/mplayer-1.0_pre5-r4 ]
- - 3dfx       : Adds support for 3dfx video cards to XFree86. See: voodoo3
- - 3dnow      : Adds support for 3dnow multimedia processor instructions
- - 3dnowex    : Enables 3dnow extensions in mplayer
- - aalib      : Adds support for media-libs/aalib (ASCII-Graphics Library)
+ + alsa       : Adds support for media-libs/alsa-lib (Advanced Linux Sound Architecture)
- - altivec    : Adds support for optimizations for G4 and G5/ppc970 processors + + arts       : Adds support for aRts: the KDE sound daemon
- - bidi       : Enables bidirectional language support
- - debug      : Tells configure and the makefiles to build for debugging. Effects vary across packages, but generally it will at least add -g to CFLAGS. Remember to set FEATURES=nostrip too
- - divx4linux : Adds support for divx.com's DivX(tm) mpeg4 libary
- - doc        : Adds extra documentation (API, Javadoc, etc)
- - dvb        : Adds support for DVB (Digital Video Broadcasting)
- - cdparanoia : Enables cdparanoia support
- - directfb   : Adds support for DirectFB layer (library for FB devices)
+ + dvd        : Adds support for DVDs
- - dvdread    : Enables usage of Ogle's libdvdread rather than mpdvdkit for DVD playback
- - edl        : Enables usage of Edit Decision Lists
+ + encode     : Adds support for MEncoder or LaME encoder, wherever applicable + + esd        : Adds support for media-sound/esound (Enlightened Sound Daemon) - - fbcon      : Adds framebuffer support for the console, via the kernel
+ + gif        : Adds GIF image support
- - ggi        : Adds support for media-libs/libggi (non-X video api/drivers)
+ + gtk        : Adds support for x11-libs/gtk+ (The GIMP Toolkit)
- - i8x0       : Enables support for the i8x0 xvmc video driver
- - ipv6       : Adds support for IP version 6
- - jack       : Adds support for the JACK Audio Connection Kit
- - joystick   : Add support for joysticks in all packages
+ + jpeg       : Adds JPEG image support
- - libcaca    : Enables libcaca support, colored ASCII-art graphics
- - lirc       : Adds support for lirc (Linux's Infra-Red Remote Control)
+ + live       : Enables live.com streaming media support
- - lzo        : Enables support for lzo compression
+ + mad        : Adds support for mad (high-quality mp3 decoder library and cli frontend)
- - matroska   : Use external libmatroska, rather then bundled version
- - matrox     : Adds Matrox MGA support to mplayer
+ + mpeg       : Adds libmpeg3 support to various packages.
+ + mmx        : Adds support for optimizations for Pentium MMX and Athlon class processors
+ + mmx2       : enables mmx2 support
- - mythtv     : Enables mythtv support in mplayer
+ + nas        : Adds support for network audio sound
+ + network    : Enables network streaming support
+ + nls        : unknown
- - nvidia     : Enables support for the nvidia xvmc video driver
+ + oggvorbis  : Adds support for the OggVorbis audio encoding
+ + opengl     : Adds support for OpenGL
+ + oss        : Adds support for OSS (Open Sound System)
+ + png        : Adds support for libpng (PNG images)
- - rtc        : Enables usage of the linux real time clock.  The alternative is software emulation of rtc.
- - samba      : Adds support for SAMBA
+ + sdl        : Adds support for Simple Direct Layer (media library)
+ + sse        : fast floating point optimization for PentiumIII+ class chips
+ + sse2       : Enables sse2 support
+ + svga       : Adds support for SVGAlib (graphics library)
- - tga        : Enables tga output support
- - theora     : Adds support for the Theora Video Compression Codec
+ + truetype   : Adds support for FreeType and/or FreeType2 fonts
- - v4l        : Enables video4linux support
- - v4l2       : Enables video4linux2 support
+ + X          : Adds support for X11
- - xinerama   : Add support for the xinerama X11 extension, which allows you to stretch your display across multiple monitors
+ + xmms       : Check/Support for XMMS (X MultiMedia System) player.
+ + xv         : Adds in optional support for the Xvideo extension (an X API for video playback)
- - xvid       : Adds support for xvid.org's open-source mpeg-4 codec
- - xvmc       : Enables X-Video Motion Compensation support
+ + glc        : unknown
+ - gnome      : Adds GNOME support
- - debug      : Tells configure and the makefiles to build for debugging. Effects vary across packages, but generally it will at least add -g to CFLAGS. Remember to set FEATURES=nostrip too