bitcoin: Error with compiling v0.16.3 on WSL (Windows)

Trying to compile bitcoin v0.16.3 on WSL (Ubuntu Bionic installed on Windows 10). Here are the steps I’ve done before hitting a compiling error:

sudo apt update sudo apt upgrade sudo apt install build-essential libtool autotools-dev automake pkg-config bsdmainutils curl git sudo apt install g+±mingw-w64-x86-64 sudo update-alternatives --config x86_64-w64-mingw32-g++

At this point the guide says, “Note that for WSL the Bitcoin Core source path MUST be somewhere in the default mount file system, for example /usr/src/bitcoin, AND not under /mnt/d/. If this is not the case the dependency autoconf scripts will fail. This means you cannot use a directory that located directly on the host Windows file system to perform the build.”

So instead of installing bitcoin in /home/username/bitcoin like I normally would, this time I put bitcoin in /usr/src/bitcoin which I’m guessing should not make any difference. So here are my next steps:

cd /usr/src sudo git clone https://github.com/bitcoin/bitcoin.git PATH=$(echo “$PATH” | sed -e ‘s/:/mnt.*//g’) cd depends sudo make HOST=x86_64-w64-mingw32

NOW… the compiling stops here with this error message:

    cp "bin.v2/libs/thread/build/gcc-mingw-7.3/release/binary-format-pe/link-static/runtime-link-static/target-os-windows/threadapi-win32/threading-multi/libboost_thread_win32-mt-s.a"  "stage/lib/libboost_thread_win32-mt-s.a"

...updated 126 targets...
Staging boost...
Performing configuration checks

    - 32-bit                   : no  (cached)
    - 64-bit                   : yes (cached)
    - arm                      : no  (cached)
    - mips1                    : no  (cached)
    - power                    : no  (cached)
    - sparc                    : no  (cached)
    - x86                      : yes (cached)
    - symlinks supported       : yes (cached)

Component configuration:

    - atomic                   : not building
    - chrono                   : building
    - container                : not building
    - context                  : not building
    - coroutine                : not building
    - coroutine2               : not building
    - date_time                : not building
    - exception                : not building
    - fiber                    : not building
    - filesystem               : building
    - graph                    : not building
    - graph_parallel           : not building
    - iostreams                : not building
    - locale                   : not building
    - log                      : not building
    - math                     : not building
    - metaparse                : not building
    - mpi                      : not building
    - program_options          : not building
    - python                   : not building
    - random                   : not building
    - regex                    : not building
    - serialization            : not building
    - signals                  : not building
    - system                   : building
    - test                     : building
    - thread                   : building
    - timer                    : not building
    - type_erasure             : not building
    - wave                     : not building

/bin/sh: 2: cp: Invalid argument
...failed updating 1 target...
funcs.mk:242: recipe for target '/usr/src/bitcoin/depends/work/staging/x86_64-w64-mingw32/boost/1_64_0-005ef50df7b/.stamp_staged' failed
make: *** [/usr/src/bitcoin/depends/work/staging/x86_64-w64-mingw32/boost/1_64_0-005ef50df7b/.stamp_staged] Error 1```

EDIT:  I forgot to mention this WSL Ubuntu is a new fresh install.  I kept having errors trying to compile 0.16.3 so I uninstalled and reinstalled this WSL Ubuntu from MS store. 
Distributor ID: Ubuntu
Description:    Ubuntu 18.04.1 LTS
Release:        18.04
Codename:       bionic