Neeraj Pal wrote: > 4) echo "file kern/sys_hello.c" >> /usr/src/sys/conf/files > > 5) cd /usr/src/sys/arch/amd64/compile/CUSTOM.MP/ > > 6) make obj && make -j4 > > And, then, It throws an error given below, > > " > ld -T ld.script -X --warn-common -nopie -o bsd ${SYSTEM_HEAD} vers.o ${OBJS} > > init_sysent.o:(.data+0x14b8): undefined reference to `sys_hello'
this looks like the object wasn't added. you skipped make config.