aananth@m700:~/aosp$ make -j32
============================================
PLATFORM_VERSION_CODENAME=O
PLATFORM_VERSION=O
TARGET_PRODUCT=hikey
TARGET_BUILD_VARIANT=userdebug
TARGET_BUILD_TYPE=release
TARGET_ARCH=arm64
TARGET_ARCH_VARIANT=armv8-a
TARGET_CPU_VARIANT=cortex-a53
TARGET_2ND_ARCH=arm
TARGET_2ND_ARCH_VARIANT=armv7-a-neon
TARGET_2ND_CPU_VARIANT=cortex-a53
HOST_ARCH=x86_64
HOST_2ND_ARCH=x86
HOST_OS=linux
HOST_OS_EXTRA=Linux-4.4.0-78-generic-x86_64-with-Ubuntu-16.04-xenial
HOST_CROSS_OS=windows
HOST_CROSS_ARCH=x86
HOST_CROSS_2ND_ARCH=x86_64
HOST_BUILD_TYPE=release
BUILD_ID=NYC
OUT_DIR=out
============================================
[38/38] bootstrap out/soong/.minibootstrap/build.ninja.in
[2/2] bootstrap out/soong/.minibootstrap/build.ninja.in
[4/4] cp out/soong/.bootstrap/bin/bpglob
[500/501] glob vendor/*/*/Android.bp
[46/46] out/soong/.bootstrap/bin/soong_build out/soong/build.ninja
out/build-hikey.ninja is missing, regenerating...
[135/685] including ./device/linaro/hikey/Android.mk ...
build/core/base_rules.mk:238: error: device/linaro/hikey/gralloc960: MODULE.TARGET.SHARED_LIBRARIES.gralloc.hikey already defined by device/linaro/hikey/gralloc.
06:21:56 ckati failed with: exit status 1
build/core/main.mk:21: recipe for target 'run_soong_ui' failed
make: *** [run_soong_ui] Error 1

#### make failed to build some targets (01:02 (mm:ss)) ####