the problem in building kernel

[Rei00yang]

i was building the driver with kernel
the error code:
make -C /usr/src/linux-source-2.6.15 SUBDIRS=`pwd` DRMSRCDIR=`pwd` modules
make[1]: Entering directory `/usr/src/linux-source-2.6.15'
Makefile:490: .config: 没有那个文件或目录

WARNING: Symbol version dump /usr/src/linux-source-2.6.15/Module.symvers
is missing; modules will have no dependencies and modversions.

/root/Desktop/unichrome-20060322/drm/linux-core/Makefile:289: *** CONFIG_X86_CMPXCHG needs to be enabled in the kernel。 停止。

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what can i do???

[linuxcn.com]

just try to do:
cd /usr/src
ln -s linux-version linux
cd linux
cp /boot/config-version .config
make menuconfig
.........................