[Gentoo] xulrunner ne veut pas compiler

> root@gentoo[192.168.1.2]:~# gcc -v
gcc-config error: Could not run/locate "gcc"
> root@gentoo[192.168.1.2]:~#

> root@gentoo[192.168.1.2]:~# gcc-config 
Usage: gcc-config [options] [CC Profile]
Change the current cc/gcc profile, or give info about profiles.

Options:
  -O, --use-old              Use the old profile if one was selected.
  -f, --force                Make sure all config files are regenerated.
  -P, --use-portage-chost    Only set to given profile if its CHOST is the 
                             same as that set for portage in /etc/make.conf
                             (or one of other portage config files...).
  -c, --get-current-profile  Print current used gcc profile.
  -l, --list-profiles        Print a list of available profiles.
  -S, --split-profile        Split profiles into their components
  -E, --print-environ        Print environment that can be used to setup the
                             current gcc profile, or a specified one.
  -B, --get-bin-path         Print path where binaries of the given/current
                             profile are located.
  -L, --get-lib-path         Print path where libraries of the given/current
                             profile are located.
  -X, --get-stdcxx-incdir    Print path where g++ include files of the
                             given/current profile are located.

Profile names are of the form:  <CHOST>-<gcc version>
For example:                    i686-pc-linux-gnu-3.2.1
> root@gentoo[192.168.1.2]:~# gcc-config -l
 * gcc-config: Active gcc profile is invalid!
 [1] i686-pc-linux-gnu-4.3.2
> root@gentoo[192.168.1.2]:~#

> root@gentoo[192.168.1.2]:~# gcc-config i686-pc-linux-gnu-4.3.2
 * Switching native-compiler to i686-pc-linux-gnu-4.3.2 ...

 * Your gcc has a bug with GCC_SPECS.
 * Please re-emerge gcc.
 * https://bugs.gentoo.org/show_bug.cgi?id=68395

>>> Regenerating /etc/ld.so.cache...                                      [ ok ]

 * If you intend to use the gcc from the new profile in an already
 * running shell, please remember to do:

 *   # source /etc/profile

> root@gentoo[192.168.1.2]:~# 
> root@gentoo[192.168.1.2]:~# 
> root@gentoo[192.168.1.2]:~# 
> root@gentoo[192.168.1.2]:~# 
> root@gentoo[192.168.1.2]:~# gcc -v
Utilisation des specs internes.
Target: i686-pc-linux-gnu
Configuré avec: /var/tmp/portage/sys-devel/gcc-4.3.2-r3/work/gcc-4.3.2/configure --prefix=/usr --bindir=/usr/i686-pc-linux-gnu/gcc-bin/4.3.2 --includedir=/usr/lib/gcc/i686-pc-linux-gnu/4.3.2/include --datadir=/usr/share/gcc-data/i686-pc-linux-gnu/4.3.2 --mandir=/usr/share/gcc-data/i686-pc-linux-gnu/4.3.2/man --infodir=/usr/share/gcc-data/i686-pc-linux-gnu/4.3.2/info --with-gxx-include-dir=/usr/lib/gcc/i686-pc-linux-gnu/4.3.2/include/g++-v4 --host=i686-pc-linux-gnu --build=i686-pc-linux-gnu --disable-altivec --disable-fixed-point --enable-nls --without-included-gettext --with-system-zlib --disable-checking --disable-werror --enable-secureplt --disable-multilib --enable-libmudflap --disable-libssp --enable-libgomp --disable-libgcj --with-arch=i686 --enable-languages=c,c++,treelang,fortran --enable-shared --enable-threads=posix --enable-__cxa_atexit --enable-clocale=gnu --with-bugurl=https://bugs.gentoo.org/ --with-pkgversion='Gentoo 4.3.2-r3 p1.6, pie-10.1.5'
Modèle de thread: posix
gcc version 4.3.2 (Gentoo 4.3.2-r3 p1.6, pie-10.1.5) 
> root@gentoo[192.168.1.2]:~#