[elrepo] building jfs module

[lejeczek]

hi there

I'm hoping to build jfs.ko and I use: 
https://wiki.centos.org/HowTos/BuildingKernelModules as the 
howto.
However, it fails and I wonder if some experts could say it 
because kernel-lt is different and above howto will not work 
or maybe jfs.ko cannot be build for some reason?

I see:
$ make prepare
scripts/kconfig/conf  --silentoldconfig Kconfig
make[1]: *** No rule to make target 
`arch/x86/entry/syscalls/syscall_32.tbl', needed by 
`arch/x86/entry/syscalls/../../include/generated/asm/syscalls_32.h'. 
Stop.
make: *** [archheaders] Error 2

$ make M=fs/jfs
make[1]: *** No rule to make target `fs/jfs/super.o', needed 
by `fs/jfs/jfs.o'.  Stop.
make: *** [_module_fs/jfs] Error 2

many thanks.
L.