Guys, hi everyone. I'm new at boinc computing and i'm trying to set up the test android application. I faced a problem trying to build a project and honestly have no idea how to fix it and what to do here. Could you help me? Thank you very much!

andrey@andrey:~/boinc/android$ ./build_androidtc_arm.sh
HOST_OS=linux
HOST_EXE=
HOST_ARCH=x86_64
HOST_TAG=linux-x86_64
HOST_NUM_CPUS=8
BUILD_NUM_CPUS=16
## COMMAND: python /home/andrey/android-ndk-r21d/build/tools/make_standalone_toolchain.py --arch arm --api 16 --stl libc++ --install-dir=/home/andrey/android-tc/arm
WARNING:__main__:make_standalone_toolchain.py is no longer necessary. The
$NDK/toolchains/llvm/prebuilt/linux-x86_64/bin directory contains target-specific scripts that perform
the same task. For example, instead of:

    $ python $NDK/build/tools/make_standalone_toolchain.py \
        --arch arm --api 16 --install-dir toolchain
    $ toolchain/bin/clang++ src.cpp

Instead use:

    $ $NDK/toolchains/llvm/prebuilt/linux-x86_64/bin/armv7a-linux-androideabi16-clang++ src.cpp

Toolchain installed to /home/andrey/android-tc/arm.
andrey@andrey:~/boinc/android$ ./build_libraries_arm.sh
==================building Libraries from ..==========================
make: *** No rule to make target 'clean'.  Stop.