linuxcnc@linuxcnc:~/linuxcnc-dev/src$ make -j2
Reading 47/183 dependency files
Done reading dependencies
ln -sf liblinuxcncini.so.0 ../lib/liblinuxcncini.so
ln -sf libposemath.so.0 ../lib/libposemath.so
Linking inivar
ln -sf libnml.so.0 ../lib/libnml.so
Compiling rtapi/rtai_ulapi.c
In file included from rtapi/rtai_ulapi.c:68:0:
rtapi/rtapi_rtai_shm_wrap.h:19:22: fatal error: rtai_shm.h: No such file or directory
 #include <rtai_shm.h>
                      ^
compilation terminated.
Compiling hal/user_comps/mb2hal/mb2hal.c
Makefile:204: recipe for target 'objects/rtapi/rtai_ulapi.o' failed
make: *** [objects/rtapi/rtai_ulapi.o] Error 1
make: *** Waiting for unfinished jobs....
linuxcnc@linuxcnc:~/linuxcnc-dev/src$