SYMLINK arch/um/include/kern_constants.h
  SYMLINK arch/um/include/sysdep
  CC      arch/um/sys-i386/user-offsets.s
arch/um/sys-i386/user-offsets.c: In function ‘foo’:
arch/um/sys-i386/user-offsets.c:51: error: invalid application of ‘sizeof’ to incomplete type ‘struct user_i387_struct’ 
arch/um/sys-i386/user-offsets.c:52: error: invalid application of ‘sizeof’ to incomplete type ‘struct user_fxsr_struct’ 
arch/um/sys-i386/user-offsets.c:70: error: invalid application of ‘sizeof’ to incomplete type ‘struct user_regs_struct’ 
make[1]: *** [arch/um/sys-i386/user-offsets.s] Error 1
make: *** [arch/um/sys-i386/user-offsets.s] Error 2