2 - Les distributions et les noyaux

ERROR: kernel configuration is invalid
            include/generated/autoconf.h or include/config/auto.conf are missing.
            Run 'make oldconfig && make prepare' on kernel src to fix it.
         make[4]: *** [/var/tmp/portage/x11-drivers/nvidia-drivers-195.36.31/work/NVIDIA-Linux-x86_64-195.36.31-pkg2/
                  usr/src/nv/nv.o] ERROR 1
         make[3]: *** [_module_/var/tmp/portage/x11-drivers/nvidia-drivers-195.36.31/work/NVIDIA-Linux-x86_64-195.36.31-pkg2/
                  usr/src/nv] ERROR 2
         make[2]: *** [sub-make] ERROR 2         
         NVIDIA: left KBUILD.
         nvidia.ko failed to build
         make[1] *** [module] ERROR 1
         make: *** [module] ERROR 2
         * ERROR: x11-drivers/nvidia-drivers-195.36.31 failed
         *  Unable to emake HOSTCC=x86_64-pc-linux-gnu-gcc CROSS_COMPILE=x86_64-pc-linux-gnu- LDFLAGS= IGNORE_CC_MISMATCH=yes
            v=1 SYSSRC=/usr/src/linux
            SYSOUT=/lib/modules/2.6.33.7-rt29/build HOST_CC=x86_64-pc-linux-gnu-gcc CC=x86_64-pc-linux-gnu-gcc clean module
         *
         * Call stack:
         * ebuild.sh, line 54: Called src_compile
         * environment, line 4121: Called linux_mod_src_compile
         * environment, line 3051: 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};
         *
         * If you need support, post post the output of 'emerge --info =x11-drivers/nvidia-drivers-195.36.31'.
         * The complete build log and the output of 'emerge -pqv = x11-drivers/nvidia-drivers-195.36.31'.
         * The complete build log is located at '/var/tmp/portage/x11-drivers/nvidia-drivers-195.36.31/temp/build.log'
         * The ebuild environment file is located at '/var/tmp/portage/x11-drivers/nvidia-drivers-195.36.31/temp/environment'.
         * S: '/var/tmp/portage/x11-drivers/nvidia-drivers-195.36.31/work/NVIDIA-linux-x86_64-195.36.31-pkg2'