Crash due to multiple target patterns when compiling android msm kernel for nexus 6p

Question

I think the source of the problem is that head-y is not installed anywhere, but I don't know what to do about it.

Commands I used to compile

$ export ARCH=arm64
$ export CROSS_COMPILE=aarch64-linux-android-
$ cd msm-angler
$ make msm_defconfig
$ make

I did not use the git -checkout command because I just downloaded the tar.gz file from google git repository

Some warning appears when using the make msm_defconfig command.

arch/arm64/configs/msm_defconfig:431:
warning: override: reassigning to symbol LEDS_TRIGGERS
warning: (SND_SOC_APQ8084 && SND_SOC_MSM8X16 && SND_SOC_MSM8994) selects SND_SOC_CPE which has unmet direct dependencies (SOUND && !M68K && !UML && SND && SND_SOC && SND_SOC_WCD_CPE)
warning: (SND_SOC_QDSP6V2) selects SND_SOC_MSM_QDSP6V2_INTF which has unmet direct dependencies (SOUND && !M68K && !UML && SND && SND_SOC && MSM_QDSP6_APRV2)
warning: (ARCH_MSM) selects DEVFREQ_GOV_MSM_BW_HWMON which has unmet direct dependencies (PM_DEVFREQ && (ARCH_MSM_KRAIT || ARCH_MSM_BIMC_BWMON))
warning: (SND_SOC_QDSP6V2) selects SND_SOC_MSM_QDSP6V2_INTF which has unmet direct dependencies (SOUND && !M68K && !UML && SND && SND_SOC && MSM_QDSP6_APRV2)
warning: (SND_SOC_APQ8084 && SND_SOC_MSM8X16 && SND_SOC_MSM8994) selects SND_SOC_CPE which has unmet direct dependencies (SOUND && !M68K && !UML && SND && SND_SOC && SND_SOC_WCD_CPE)
warning: (ARCH_MSM) selects DEVFREQ_GOV_MSM_BW_HWMON which has unmet direct dependencies (PM_DEVFREQ && (ARCH_MSM_KRAIT || ARCH_MSM_BIMC_BWMON))
#
# configuration written to .config
#

This is an error that occurs when running make

Makefile:796: *** multiple target patterns.  Stop.

Here is line 796

vmlinux: scripts/link-vmlinux.sh $(vmlinux-deps) FORCE

Vmlinux-deps is indicated here (line 788)

vmlinux-deps := $(KBUILD_LDS) $(KBUILD_VMLINUX_INIT) $(KBUILD_VMLINUX_MAIN)

KBUILD_LDS, KBUILD_VMLINUX_INIT, and KBUILD_VMLINUX_MAIN (lines 781-783) are listed here.

export KBUILD_VMLIUX_INIT := $(head-y) $(init-y)
export KBUILD_VMLINUX_MAIN := $(core-y) $(libs-y) $(drivers-y) $(net-y)
export KBUILD_LDS          := arch/$(SRCARCH)/kernel/vmlinux.lds

All * -y elements (except head-y) are located here (lines 525-529)

init-y          := init/
drivers-y       := drivers/ sound/ firmware/
net-y           := net/
libs-y          := lib/
core-y          := usr/

, -, head-y, , , , , head-y.