#include <stdio.h>

int main(void) {
	unsigned char *buf = "\x7f";
	printf("buf[0] = %d\n",(int)buf[0]);
	return 0;
}

$ gcc -Wall -o test test.c
test.c: В функции ‘main’:
test.c:4: предупреждение: в инициализации указуемые типы различаются знаковостью

unsigned char buf[] = "\x7f";

emerge --sync && xmpps "portage tree updated"

emerge --sync && xmpps ... ; reboot

emerge broadcom-sta

CONFIG_CHECK="${CONFIG_CHECK} LIB80211 WIRELESS_EXT CFG80211_WEXT WEXT_PRIV ~!MAC80211"

~ $ grep LIB80211 .config
CONFIG_LIB80211=y
# CONFIG_LIB80211_DEBUG is not set
~ $ grep WIRELESS_EXT .config
CONFIG_WIRELESS_EXT_SYSFS=y
~ $ grep CFG80211_WEXT .config
CONFIG_CFG80211_WEXT=y
~ $ grep WEXT_PRIV .config
~ $ 

Networking Section
     [*]   Wireless  --->
          <M>   Improved wireless configuration API
           -*-   Wireless extensions
           [*]     Wireless extensions sysfs files (NEW)         
          <*>   Common routines for IEEE802.11 drivers   
          <M>   Generic IEEE 802.11 Networking Stack (mac80211) 

http://habrahabr.ru/rss/lenta/ihl/2db06c0070da9218fba34e8aa8fabde7/

$ screen
Cannot open your terminal '/dev/pts/0' - please check.

$ id
uid=1001(rtorrent) gid=1006(rtorrent) группы=100(users),1006(rtorrent)

$ ls -la /dev/pts/0
crw--w---- 1 edigaryev tty 136, 0 Янв  8 13:30 /dev/pts/0

zcat /proc/config.gz > /usr/src/linux/.config

>>> Compiling source in /var/tmp/portage/net-wireless/broadcom-sta-5.10.91.9.3-r1/work ...
ln: создание символьной ссылки `Module.symvers': Файл существует
 * Preparing wl module
make -j3 HOSTCC=i686-pc-linux-gnu-gcc CROSS_COMPILE=i686-pc-linux-gnu- LDFLAGS= -C /usr/src/linux M=/var/tmp/portage/net-wireless/broadcom-sta-5.10.91.9.3-r1/work wl.ko 
make: Entering directory `/usr/src/linux-2.6.32-gentoo'
  CC [M]  /var/tmp/portage/net-wireless/broadcom-sta-5.10.91.9.3-r1/work/src/wl/sys/wl_linux.o
  CC [M]  /var/tmp/portage/net-wireless/broadcom-sta-5.10.91.9.3-r1/work/src/shared/linux_osl.o
  CC [M]  /var/tmp/portage/net-wireless/broadcom-sta-5.10.91.9.3-r1/work/src/wl/sys/wl_iw.o
/var/tmp/portage/net-wireless/broadcom-sta-5.10.91.9.3-r1/work/src/wl/sys/wl_linux.c: В функции ‘wl_free’:
/var/tmp/portage/net-wireless/broadcom-sta-5.10.91.9.3-r1/work/src/wl/sys/wl_linux.c:707: ошибка: неявная декларация функции ‘schedule’
make[1]: *** [/var/tmp/portage/net-wireless/broadcom-sta-5.10.91.9.3-r1/work/src/wl/sys/wl_linux.o] Ошибка 1
make[1]: *** Ожидание завершения заданий...
make: *** [wl.ko] Ошибка 2
make: Leaving directory `/usr/src/linux-2.6.32-gentoo'
 * 
 * ERROR: net-wireless/broadcom-sta-5.10.91.9.3-r1 failed.
 * Call stack:
 *               ebuild.sh, line   49:  Called src_compile
 *             environment, line 3404:  Called linux-mod_src_compile
 *             environment, line 2634:  Called die
 * The specific snippet of code:
 *               eval "emake HOSTCC=\"$(tc-getBUILD_CC)\" 						CROSS_COMPILE=${CHOST}- 				LDFLAGS=\"$(get_abi_LDFLAGS)\" 						${BUILD_FIXES} 						${BUILD_PARAMS} 		${BUILD_TARGETS} " || die "Unable to emake HOSTCC="$(tc-getBUILD_CC)" CROSS_COMPILE=${CHOST}- LDFLAGS="$(get_abi_LDFLAGS)" ${BUILD_FIXES} ${BUILD_PARAMS} ${BUILD_TARGETS}";
 *  The die message:
 *   Unable to emake HOSTCC=i686-pc-linux-gnu-gcc CROSS_COMPILE=i686-pc-linux-gnu- LDFLAGS=  -C /usr/src/linux M=/var/tmp/portage/net-wireless/broadcom-sta-5.10.91.9.3-r1/work wl.ko
 * 
 * If you need support, post the topmost build error, and the call stack if relevant.
 * A complete build log is located at '/var/tmp/portage/net-wireless/broadcom-sta-5.10.91.9.3-r1/temp/build.log'.
 * The ebuild environment file is located at '/var/tmp/portage/net-wireless/broadcom-sta-5.10.91.9.3-r1/temp/environment'.
 * 

>>> Failed to emerge net-wireless/broadcom-sta-5.10.91.9.3-r1, Log file:

>>>  '/var/tmp/portage/net-wireless/broadcom-sta-5.10.91.9.3-r1/temp/build.log'

 * Messages for package net-wireless/broadcom-sta-5.10.91.9.3-r1:

 * 
 * ERROR: net-wireless/broadcom-sta-5.10.91.9.3-r1 failed.
 * Call stack:
 *               ebuild.sh, line   49:  Called src_compile
 *             environment, line 3404:  Called linux-mod_src_compile
 *             environment, line 2634:  Called die
 * The specific snippet of code:
 *               eval "emake HOSTCC=\"$(tc-getBUILD_CC)\" 						CROSS_COMPILE=${CHOST}- 				LDFLAGS=\"$(get_abi_LDFLAGS)\" 						${BUILD_FIXES} 						${BUILD_PARAMS} 		${BUILD_TARGETS} " || die "Unable to emake HOSTCC="$(tc-getBUILD_CC)" CROSS_COMPILE=${CHOST}- LDFLAGS="$(get_abi_LDFLAGS)" ${BUILD_FIXES} ${BUILD_PARAMS} ${BUILD_TARGETS}";
 *  The die message:
 *   Unable to emake HOSTCC=i686-pc-linux-gnu-gcc CROSS_COMPILE=i686-pc-linux-gnu- LDFLAGS=  -C /usr/src/linux M=/var/tmp/portage/net-wireless/broadcom-sta-5.10.91.9.3-r1/work wl.ko
 * 
 * If you need support, post the topmost build error, and the call stack if relevant.
 * A complete build log is located at '/var/tmp/portage/net-wireless/broadcom-sta-5.10.91.9.3-r1/temp/build.log'.
 * The ebuild environment file is located at '/var/tmp/portage/net-wireless/broadcom-sta-5.10.91.9.3-r1/temp/environment'.
 * 

magnet:?xt=urn:sha1:YNCKHTQCWBTRNJIV4WNAE52SJUQCZO5C

>>> Failed to install dev-db/libpq-8.1.11, Log file:

>>>  '/var/tmp/portage/dev-db/libpq-8.1.11/temp/build.log'

 * Messages for package dev-db/libpq-8.1.11:

 * This package will overwrite one or more files that may belong to other
 * packages (see list below). You can use a command such as `portageq
 * owners / <filename>` to identify the installed package that owns a
 * file. If portageq reports that only one package owns a file then do
 * NOT file a bug report. A bug report is only useful if it identifies at
 * least two or more packages that are known to install the same file(s).
 * If a collision occurs and you can not explain where the file came from
 * then you should simply ignore the collision since there is not enough
 * information to determine if a real problem exists. Please do NOT file
 * a bug report at http://bugs.gentoo.org unless you report exactly which
 * two packages install the same file(s). Once again, please do NOT file
 * a bug report unless you have completely understood the above message.
 * 
 * Detected file collision(s):
 * 
 *      /usr/share/postgresql/pg_service-4.conf.sample
 *      /usr/share/locale/zh_CN/LC_MESSAGES/libpq-4.mo
 *      /usr/share/locale/zh_CN/LC_MESSAGES/pg_config.mo
 *      /usr/share/locale/de/LC_MESSAGES/libpq-4.mo
 *      /usr/share/locale/de/LC_MESSAGES/pg_config.mo
 *      /usr/share/locale/tr/LC_MESSAGES/libpq-4.mo
 *      /usr/share/locale/tr/LC_MESSAGES/pg_config.mo
 *      /usr/share/locale/sv/LC_MESSAGES/libpq-4.mo
 *      /usr/share/locale/sv/LC_MESSAGES/pg_config.mo
 *      /usr/share/locale/zh_TW/LC_MESSAGES/libpq-4.mo
 *      /usr/share/locale/zh_TW/LC_MESSAGES/pg_config.mo
 *      /usr/share/locale/sl/LC_MESSAGES/libpq-4.mo
 *      /usr/share/locale/sl/LC_MESSAGES/pg_config.mo
 *      /usr/share/locale/ru/LC_MESSAGES/libpq-4.mo
 *      /usr/share/locale/ru/LC_MESSAGES/pg_config.mo
 *      /usr/share/locale/af/LC_MESSAGES/libpq-4.mo
 *      /usr/share/locale/ro/LC_MESSAGES/pg_config.mo
 *      /usr/share/locale/hr/LC_MESSAGES/libpq-4.mo
 *      /usr/share/locale/sk/LC_MESSAGES/libpq-4.mo
 *      /usr/share/locale/ko/LC_MESSAGES/libpq-4.mo
 *      /usr/share/locale/ko/LC_MESSAGES/pg_config.mo
 *      /usr/share/locale/cs/LC_MESSAGES/libpq-4.mo
 *      /usr/share/locale/cs/LC_MESSAGES/pg_config.mo
 *      /usr/share/locale/es/LC_MESSAGES/libpq-4.mo
 *      /usr/share/locale/es/LC_MESSAGES/pg_config.mo
 *      /usr/share/locale/pt_BR/LC_MESSAGES/libpq-4.mo
 *      /usr/share/locale/pt_BR/LC_MESSAGES/pg_config.mo
 *      /usr/share/locale/nb/LC_MESSAGES/libpq-4.mo
 *      /usr/share/locale/it/LC_MESSAGES/libpq-4.mo
 *      /usr/share/locale/pl/LC_MESSAGES/libpq-4.mo
 *      /usr/share/locale/pl/LC_MESSAGES/pg_config.mo
 *      /usr/share/locale/fr/LC_MESSAGES/libpq-4.mo
 *      /usr/share/locale/fr/LC_MESSAGES/pg_config.mo
 *      /usr/share/doc/libpq-8.1.11/README.bz2
 *      /usr/share/doc/libpq-8.1.11/HISTORY.bz2
 *      /usr/lib/libpq.so.4.1
 *      /usr/lib/libpq-4.a
 *      /usr/lib/libpq.so
 *      /usr/lib/libpq.a
 *      /usr/lib/libpq.so.4
 *      /usr/include/libpq-fe.h
 *      /usr/include/postgres_ext.h
 * 
 * Searching all installed packages for file collisions...
 * 
 * Press Ctrl-C to Stop
 * 
 * None of the installed packages claim the file(s).
 * 
 * Package 'dev-db/libpq-8.1.11' merged despite file collisions. If
 * necessary, refer to your elog messages for the whole content of the
 * above message.

Calculating dependencies... done!

>>> These are the packages that would be unmerged:

 net-print/xfprint
    selected: 4.6.1 
   protected: none 
     omitted: none 

 xfce-extra/xfce4-appfinder
    selected: 4.6.1 
   protected: none 
     omitted: none 

 sys-kernel/gentoo-sources
    selected: 2.6.30-r4 
   protected: none 
     omitted: 2.6.30-r6 

 x11-terms/terminal
    selected: 0.2.12 
   protected: none 
     omitted: none 

 app-editors/mousepad
    selected: 0.2.16 
   protected: none 
     omitted: none 

 games-misc/fortune-mod
    selected: 1.99.1-r2 
   protected: none 
     omitted: none 

 dev-python/pysqlite
    selected: 2.5.5 
   protected: none 
     omitted: none 

 net-nds/openldap
    selected: 2.3.43 
   protected: none 
     omitted: none 

 app-text/a2ps
    selected: 4.13c-r6 
   protected: none 
     omitted: none 

 dev-lang/python
    selected: 2.5.4-r3 
   protected: none 
     omitted: 2.6.2-r1 

 dev-util/xfce4-dev-tools
    selected: 4.6.0 
   protected: none 
     omitted: none 

 sys-libs/db
    selected: 4.5.20_p2-r1 
   protected: none 
     omitted: 4.6.21_p4 

>>> 'Selected' packages are slated for removal.
>>> 'Protected' and 'omitted' packages will not be removed.

Would you like to unmerge these packages? [Yes/No] No

$ sudo emerge --noreplace python eselect-news xfwm4-themes
Calculating dependencies... done!
>>> Recording app-admin/eselect-news in "world" favorites file...
>>> Recording dev-lang/python in "world" favorites file...
>>> Recording x11-themes/xfwm4-themes in "world" favorites file...
>>> Auto-cleaning packages...

>>> No outdated packages were found on your system.