[Miscellaneous Android Development] doulc:
newbie here, what is this?

dpi@ubuntu:~/kernel$ make -j9

make: /home/dpi/toolchain/bin/aarch64-linux-android-aarch64-linux-android-gcc: Command not found

make: /home/dpi/toolchain/bin/aarch64-linux-android-aarch64-linux-android-gcc: Command not found

make[1]: /home/dpi/toolchain/bin/aarch64-linux-android-aarch64-linux-android-gcc: Command not found

scripts/kconfig/conf --silentoldconfig Kconfig

Kconfig:15:warning: environment variable ANDROID_MAJOR_VERSION undefined

drivers/media/mtv/sms3230/Kconfig:51:warning: ignoring type redefinition of 'SMS_USB_DRV' from 'tristate' to 'boolean'

drivers/media/mtv/sms3230/Kconfig:58:warning: ignoring type redefinition of 'SMS_SDIO_DRV' from 'tristate' to 'boolean'

make: /home/dpi/toolchain/bin/aarch64-linux-android-aarch64-linux-android-gcc: Command not found

make: /home/dpi/toolchain/bin/aarch64-linux-android-aarch64-linux-android-gcc: Command not found

INFO: CC is /home/dpi/toolchain/bin/aarch64-linux-android-aarch64-linux-android-gcc

CHK include/config/kernel.release

WRAP arch/arm64/include/generated/asm/bug.h

WRAP arch/arm64/include/generated/asm/clkdev.h

WRAP arch/arm64/include/generated/asm/checksum.h

WRAP arch/arm64/include/generated/asm/current.h

WRAP arch/arm64/include/generated/asm/delay.h

WRAP arch/arm64/include/generated/asm/cputime.h

WRAP arch/arm64/include/generated/asm/bugs.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

CHK include/generated/uapi/linux/version.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/ftrace.h

UPD include/generated/uapi/linux/version.h

WRAP arch/arm64/include/generated/asm/hw_irq.h

WRAP arch/arm64/include/generated/asm/hash.h

WRAP arch/arm64/include/generated/asm/ioctl.h

WRAP arch/arm64/include/generated/asm/ioctls.h

WRAP arch/arm64/include/generated/asm/irq_regs.h

WRAP arch/arm64/include/generated/asm/ipcbuf.h

WRAP arch/arm64/include/generated/asm/kmap_types.h

WRAP arch/arm64/include/generated/asm/kvm_para.h

WRAP arch/arm64/include/generated/asm/errno.h

WRAP arch/arm64/include/generated/asm/msgbuf.h

WRAP arch/arm64/include/generated/asm/mcs_spinlock.h

WRAP arch/arm64/include/generated/asm/kdebug.h

WRAP arch/arm64/include/generated/asm/local64.h

WRAP arch/arm64/include/generated/asm/local.h

WRAP arch/arm64/include/generated/asm/mman.h

WRAP arch/arm64/include/generated/asm/pci.h

WRAP arch/arm64/include/generated/asm/mutex.h

WRAP arch/arm64/include/generated/asm/pci-bridge.h

WRAP arch/arm64/include/generated/asm/poll.h

WRAP arch/arm64/include/generated/asm/preempt.h

UPD include/config/kernel.release

WRAP arch/arm64/include/generated/asm/resource.h

WRAP arch/arm64/include/generated/asm/rwsem.h

WRAP arch/arm64/include/generated/asm/scatterlist.h

WRAP arch/arm64/include/generated/asm/sections.h

WRAP arch/arm64/include/generated/asm/segment.h

WRAP arch/arm64/include/generated/asm/sembuf.h

WRAP arch/arm64/include/generated/asm/serial.h

WRAP arch/arm64/include/generated/asm/shmbuf.h

WRAP arch/arm64/include/generated/asm/simd.h

WRAP arch/arm64/include/generated/asm/sizes.h

WRAP arch/arm64/include/generated/asm/socket.h

WRAP arch/arm64/include/generated/asm/sockios.h

WRAP arch/arm64/include/generated/asm/swab.h

WRAP arch/arm64/include/generated/asm/switch_to.h

WRAP arch/arm64/include/generated/asm/termbits.h

WRAP arch/arm64/include/generated/asm/termios.h

WRAP arch/arm64/include/generated/asm/topology.h

WRAP arch/arm64/include/generated/asm/trace_clock.h

WRAP arch/arm64/include/generated/asm/types.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

WRAP arch/arm64/include/generated/asm/xor.h

CHK include/generated/utsrelease.h

WRAP arch/arm64/include/generated/uapi/asm/kvm_para.h

UPD include/generated/utsrelease.h

HOSTCC scripts/kallsyms

HOSTCC scripts/sortextable

HOSTCC scripts/dtc/flattree.o

CC scripts/mod/empty.o

HOSTCC scripts/dtc/fstree.o

/bin/sh: 1: /home/dpi/toolchain/bin/aarch64-linux-android-aarch64-linux-android-gcc: not found

scripts/Makefile.build:257: recipe for target 'scripts/mod/empty.o' failed

make[2]: *** [scripts/mod/empty.o] Error 127

make[2]: *** Waiting for unfinished jobs....

scripts/Makefile.build:402: recipe for target 'scripts/mod' failed

make[1]: *** [scripts/mod] Error 2

make[1]: *** Waiting for unfinished jobs....

HOSTCC scripts/dtc/data.o

HOSTCC scripts/dtc/dtc.o

HOSTCC scripts/selinux/mdp/mdp

HOSTCC scripts/selinux/genheaders/genheaders

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

SHIPPED scripts/dtc/dtc-lexer.lex.c

SHIPPED scripts/dtc/dtc-parser.tab.h

SHIPPED scripts/dtc/dtc-parser.tab.c

HOSTCC scripts/dtc/dtc-lexer.lex.o

HOSTCC scripts/dtc/dtc-parser.tab.o

HOSTLD scripts/dtc/dtc

Makefile:585: recipe for target 'scripts' failed

make: *** [scripts] Error 2