[arch@computer linux-sandcastle]$ make -j4
  WRAP    arch/arm64/include/generated/uapi/asm/kvm_para.h
  WRAP    arch/arm64/include/generated/uapi/asm/errno.h
  WRAP    arch/arm64/include/generated/uapi/asm/ioctl.h
  WRAP    arch/arm64/include/generated/uapi/asm/ioctls.h
  WRAP    arch/arm64/include/generated/uapi/asm/mman.h
  WRAP    arch/arm64/include/generated/uapi/asm/ipcbuf.h
  WRAP    arch/arm64/include/generated/uapi/asm/msgbuf.h
  WRAP    arch/arm64/include/generated/uapi/asm/poll.h
  WRAP    arch/arm64/include/generated/uapi/asm/resource.h
  WRAP    arch/arm64/include/generated/uapi/asm/sembuf.h
  WRAP    arch/arm64/include/generated/uapi/asm/shmbuf.h
  WRAP    arch/arm64/include/generated/uapi/asm/siginfo.h
  WRAP    arch/arm64/include/generated/uapi/asm/sockios.h
  WRAP    arch/arm64/include/generated/uapi/asm/socket.h
  WRAP    arch/arm64/include/generated/uapi/asm/stat.h
  WRAP    arch/arm64/include/generated/uapi/asm/swab.h
  WRAP    arch/arm64/include/generated/uapi/asm/termbits.h
  WRAP    arch/arm64/include/generated/uapi/asm/termios.h
  WRAP    arch/arm64/include/generated/uapi/asm/types.h
  UPD     include/generated/uapi/linux/version.h
  WRAP    arch/arm64/include/generated/asm/bugs.h
  WRAP    arch/arm64/include/generated/asm/delay.h
  WRAP    arch/arm64/include/generated/asm/div64.h
  WRAP    arch/arm64/include/generated/asm/dma.h
  WRAP    arch/arm64/include/generated/asm/dma-contiguous.h
  WRAP    arch/arm64/include/generated/asm/dma-mapping.h
  WRAP    arch/arm64/include/generated/asm/early_ioremap.h
  WRAP    arch/arm64/include/generated/asm/emergency-restart.h
  WRAP    arch/arm64/include/generated/asm/hw_irq.h
  HOSTCC  scripts/dtc/dtc.o
  HOSTCC  scripts/dtc/flattree.o
  WRAP    arch/arm64/include/generated/asm/irq_regs.h
  WRAP    arch/arm64/include/generated/asm/kdebug.h
  WRAP    arch/arm64/include/generated/asm/kmap_types.h
  WRAP    arch/arm64/include/generated/asm/local.h
  WRAP    arch/arm64/include/generated/asm/local64.h
  WRAP    arch/arm64/include/generated/asm/mcs_spinlock.h
  WRAP    arch/arm64/include/generated/asm/mm-arch-hooks.h
  WRAP    arch/arm64/include/generated/asm/mmiowb.h
  WRAP    arch/arm64/include/generated/asm/msi.h
  WRAP    arch/arm64/include/generated/asm/qrwlock.h
  WRAP    arch/arm64/include/generated/asm/qspinlock.h
  WRAP    arch/arm64/include/generated/asm/serial.h
  WRAP    arch/arm64/include/generated/asm/set_memory.h
  WRAP    arch/arm64/include/generated/asm/switch_to.h
  WRAP    arch/arm64/include/generated/asm/trace_clock.h
  WRAP    arch/arm64/include/generated/asm/unaligned.h
  WRAP    arch/arm64/include/generated/asm/user.h
  WRAP    arch/arm64/include/generated/asm/vga.h
  UPD     include/config/kernel.release
  HOSTCC  scripts/dtc/fstree.o
  HOSTCC  scripts/dtc/data.o
  HOSTCC  scripts/dtc/livetree.o
  HOSTCC  scripts/dtc/treesource.o
  HOSTCC  scripts/dtc/srcpos.o
  HOSTCC  scripts/dtc/checks.o
  HOSTCC  scripts/dtc/util.o
  LEX     scripts/dtc/dtc-lexer.lex.c
  YACC    scripts/dtc/dtc-parser.tab.[ch]
  HOSTCC  scripts/dtc/dtc-lexer.lex.o
  HOSTCC  scripts/dtc/dtc-parser.tab.o
  HOSTLD  scripts/dtc/dtc
  UPD     include/generated/utsrelease.h
/usr/sbin/ld: scripts/dtc/dtc-parser.tab.o:(.bss+0x20): multiple definition of `yylloc'; scripts/dtc/dtc-lexer.lex.o:(.bss+0x0): first defined here
collect2: error: ld returned 1 exit status
make[1]: *** [scripts/Makefile.host:116: scripts/dtc/dtc] Error 1
make: *** [Makefile:1263: scripts_dtc] Error 2
make: *** Waiting for unfinished jobs....