I ran make, and got the following error. stackoverflow suggested that it was due to a missing typedef.

./gen_tables.py /usr/src/linux/
cc -c -o ministrace.o ministrace.c
In file included from ministrace.c:2:0:
/usr/include/sys/user.h:32:3: error: expected specifier-qualifier-list before '__uint16_t'
make: *** [ministrace.o] Error 1