Makefile for drivers complains about missing target 'modules'

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Hi,
I tried to build the mga_vid.ko module by starting make from the drivers 
directory.
The most errors I could handle by adding appropriate links to missing 
directories.
But now it seems that there is a target `modules' missing in the Makefile.
Watch the the error output of make:

make mga_vid.ko mga_vid_test
make[1]: Entering directory `/home/xxx/MPlayer-20050110/drivers'
make -C /lib/modules/`uname -r`/build SUBDIRS=/home/xxx/MPlayer-20050110/\
drivers modules
make[2]: Entering directory `/lib/modules/2.4.27-1-386/build'
make[2]: *** No rule to make target `modules'.  Stop.
make[2]: Leaving directory `/lib/modules/2.4.27-1-386/build'
make[1]: *** [mga_vid.ko] Error 2
make[1]: Leaving directory `/home/xxx/MPlayer-20050110/drivers'
make: *** [all] Error 2

Has anybody used the Makefile successfully in the last time?
Any suggestions would be appreciated
Rainer