ubuntu18@ubuntu18:~/AOSP_9$ m
============================================
PLATFORM_VERSION_CODENAME=REL
PLATFORM_VERSION=9
TARGET_PRODUCT=aosp_arm
TARGET_BUILD_VARIANT=eng
TARGET_BUILD_TYPE=release
TARGET_ARCH=arm
TARGET_ARCH_VARIANT=armv7-a-neon
TARGET_CPU_VARIANT=generic
HOST_ARCH=x86_64
HOST_2ND_ARCH=x86
HOST_OS=linux
HOST_OS_EXTRA=Linux-5.4.0-84-generic-x86_64-Ubuntu-18.04.6-LTS
HOST_CROSS_OS=windows
HOST_CROSS_ARCH=x86
HOST_CROSS_2ND_ARCH=x86_64
HOST_BUILD_TYPE=release
BUILD_ID=PI
OUT_DIR=out
============================================
ninja: no work to do.
ninja: no work to do.
No need to regenerate ninja file
No need to regenerate ninja file
[ 0% 20/2162] build out/target/common...ntermediates/dex-hiddenapi/classes.dex
FAILED: out/target/common/obj/JAVA_LIBRARIES/ims-common_intermediates/dex-hiddenapi/classes.dex
/bin/bash -c "(rm -rf out/target/common/obj/JAVA_LIBRARIES/ims-common_intermediates/dex-hiddenapi/ ) && (mkdir -p out/target/common/obj/JAVA_LIBRARIES/ims-common_intermediates/dex-hiddenapi/ ) && (find out/target/common/obj/JAVA_LIBRARIES/ims-common_intermediates/dex/ -maxdepth 1 -name \"classes*.dex\" | sort | xargs -I{} cp -f {} out/target/common/obj/JAVA_LIBRARIES/ims-common_intermediates/dex-hiddenapi/ ) && (find out/target/common/obj/JAVA_LIBRARIES/ims-common_intermediates/dex-hiddenapi/ -name \"classes*.dex\" | sort | sed 's/^/--dex=/' | xargs out/host/linux-x86/bin/hiddenapi --light-greylist=out/target/common/obj/PACKAGING/hiddenapi-light-greylist.txt --dark-greylist=out/target/common/obj/PACKAGING/hiddenapi-dark-greylist.txt --blacklist=out/target/common/obj/PACKAGING/hiddenapi-blacklist.txt )"
hiddenapi E 10-06 10:51:52 2818 2818 hiddenapi.cc:47] No DEX files specified
hiddenapi E 10-06 10:51:52 2818 2818 hiddenapi.cc:47] Command: out/host/linux-x86/bin/hiddenapi --light-greylist=out/target/common/obj/PACKAGING/hiddenapi-light-greylist.txt --dark-greylist=out/target/common/obj/PACKAGING/hiddenapi-dark-greylist.txt --blacklist=out/target/common/obj/PACKAGING/hiddenapi-blacklist.txt
hiddenapi E 10-06 10:51:52 2818 2818 hiddenapi.cc:47] Usage: hiddenapi [options]...
hiddenapi E 10-06 10:51:52 2818 2818 hiddenapi.cc:47]
hiddenapi E 10-06 10:51:52 2818 2818 hiddenapi.cc:47] --dex=<filename>: specify dex file whose members' access flags are to be set.
hiddenapi E 10-06 10:51:52 2818 2818 hiddenapi.cc:47] At least one --dex parameter must be specified.
hiddenapi E 10-06 10:51:52 2818 2818 hiddenapi.cc:47]
hiddenapi E 10-06 10:51:52 2818 2818 hiddenapi.cc:47] --light-greylist=<filename>:
hiddenapi E 10-06 10:51:52 2818 2818 hiddenapi.cc:47] --dark-greylist=<filename>:
hiddenapi E 10-06 10:51:52 2818 2818 hiddenapi.cc:47] --blacklist=<filename>: text files with signatures of methods/fields to be marked
hiddenapi E 10-06 10:51:52 2818 2818 hiddenapi.cc:47] greylisted/blacklisted respectively. At least one list must be provided.
hiddenapi E 10-06 10:51:52 2818 2818 hiddenapi.cc:47]
hiddenapi E 10-06 10:51:52 2818 2818 hiddenapi.cc:47] --print-hidden-api: dump a list of marked methods/fields to the standard output.
hiddenapi E 10-06 10:51:52 2818 2818 hiddenapi.cc:47] There is no indication which API category they belong to.
hiddenapi E 10-06 10:51:52 2818 2818 hiddenapi.cc:47]
[ 1% 37/2162] Proguard: out/target/co...eur_intermediates/classes-proguard.jar
ProGuard, version 5.1
Reading system jar [/home/ubuntu18/AOSP_9/out/target/common/obj/JAVA_LIBRARIES/core-oj_intermediates/classes-header.jar]
Reading system jar [/home/ubuntu18/AOSP_9/out/target/common/obj/JAVA_LIBRARIES/core-libart_intermediates/classes-header.jar]
Reading system jar [/home/ubuntu18/AOSP_9/out/target/common/obj/JAVA_LIBRARIES/ext_intermediates/classes-header.jar]
Reading system jar [/home/ubuntu18/AOSP_9/out/target/common/obj/JAVA_LIBRARIES/framework_intermediates/classes-header.jar]
Reading system jar [/home/ubuntu18/AOSP_9/out/target/common/obj/JAVA_LIBRARIES/okhttp_intermediates/classes-header.jar]
Reading system jar [/home/ubuntu18/AOSP_9/out/target/common/obj/JAVA_LIBRARIES/core-lambda-stubs_intermediates/classes-header.jar]
Reading program jar [/home/ubuntu18/AOSP_9/out/target/common/obj/APPS/Traceur_intermediates/classes.jar]
Preparing output jar [/home/ubuntu18/AOSP_9/out/target/common/obj/APPS/Traceur_intermediates/classes-proguard.jar]
Copying resources from program jar [/home/ubuntu18/AOSP_9/out/target/common/obj/APPS/Traceur_intermediates/classes.jar]
ninja: build stopped: subcommand failed.
10:52:06 ninja failed with: exit status 1
#### failed to build some targets (35 seconds) #### Any leads will be appreciated. Thank you.