non riesco più ad emergere un tubo in gentoo.

Se anche do il comando

codice:
 emerge --update --deep --newuse world
l'esito è:

Calculating world dependencies ...done!
>>> emerge (1 of 179) sys-devel/m4-1.4.2-r1 to /
>>> md5 src_uri ;-) m4-1.4.2.tar.gz
>>> Unpacking source...
>>> Unpacking m4-1.4.2.tar.gz to /var/tmp/portage/m4-1.4.2-r1/work
>>> Source unpacked.
./configure --prefix=/usr --host=i686-pc-linux-gnu --mandir=/usr/share/man --infodir=/usr/share/info --datadir=/usr/share --sysconfdir=/etc --localstatedir=/var/lib --enable-nls --enable-changeword
configure: WARNING: If you wanted to set the --build type, don't use --host.
If a cross compiler is detected then cross compile mode will be used.
checking for gawk... gawk
checking for i686-pc-linux-gnu-gcc... i686-pc-linux-gnu-gcc
checking for C compiler default output file name... configure: error: C compiler cannot create executables
See `config.log' for more details.

!!! Please attach the config.log to your bug report:
!!! /var/tmp/portage/m4-1.4.2-r1/work/m4-1.4.2/config.log

!!! ERROR: sys-devel/m4-1.4.2-r1 failed.
!!! Function econf, Line 485, Exitcode 0
!!! econf failed
!!! If you need support, post the topmost build error, NOT this status message.


che fo?