kernel make error

Hello all,

I am trying to build a kernel for mips architecture using the following command,

> make ARCH=mips CROSS_COMPILE=mips-wrs-linux-gnu-mips_softfp-glibc_small- menuconfig
> Makefile:412: *** mixed implicit and normal rules. Stop.

when i checked the line 412, it is
config %config: scripts_basic outputmakefile FORCE

when i changed the above line to
%config: scripts_basic outputmakefile FORCE, it started building successfully.

any guess, what effect it made to build.

Thanks
Ravi.

errrrr, i just up..