Missing prerequisites for compiling under windows

[Frank Bolton]

Is your feature request related to a problem? Please describe.
I am following the setup instructions in this repo README and the corresponding Adafruit instruction pagenrf52840-bootloader and can't get the line
make BOARD=pca10056 clean to run.
I have the ARM gcc compiler installed and on the system path as
arm-none-eabi-gcc.exe and I have GNUWin32 Make installed and also on the system path.
It appears that LadyADA is using MinGW based on screenshots from nrf52840-bootloader-compile.

Describe the solution you'd like
I would like the README file to contain more detailed prerequisites for compiling on a Window 10 workstation, including details of any application specific setup. If the addition is a link to a pre-existing reference, this would also be really helpful as make is a really unfortunate name when searching for resources.

Describe alternatives you've considered
I have looked up alternative instructions and they seem to require IDE setup (e.g. eclipse or TI CCS), which is something @ladyada didn't do and that I want to avoid. EEV Blog forum
Hacker workshop getting started arm gcc windows

Additional context
This might be a beginner problem, but NRF52840 is a good platform for this..
This is one of my first dives into cross-compiling. I played with trying to compile things for Raspberry Pi a few years ago and gave up.

[Frank Bolton]

I managed to resolve the issue.
Mingw needs to be installed.

Then using mingw to locate the folder with the Adafruit NRF52840 bootloader:
MINGW - browsing folders in msys
cd /c/and df