Building in Windows 10 with Linux subsystem [Recommended]

Linux subsystem for Windows 10 is probably the simplest way of building INAV under Windows 10.

Setting up the environment

Enable WSL: run windows features enable windows subsytem for linux reboot

Install Ubuntu:

Go to Microsoft store https://www.microsoft.com/en-gb/store/b/home
Search and install most recent Ubuntu LTS version
When download completed, select Launch Ubuntu
When prompted enter a user name and password which you will need to remember
When complete, the linux command prompt will be displayed

NOTE: from this point all commands are entered into the Ubunto shell command window

Update the repo packages:

sudo apt update

Install Git, Make, gcc and Ruby

sudo apt-get install git
sudo apt-get install make
sudo apt-get install cmake
sudo apt-get install ruby

CMAKE and Ubuntu 18_04

To run cmake in the latest version you will need to update from Ubuntu 18_04 to 20_04. The fastest way to do it is to uninstall current version and install 20_04 for Microsoft Store https://www.microsoft.com/store/productId/9N6SVWS3RX71

Downloading the iNav repository (example):

Mount MS windows C drive and clone iNav

cd /mnt/c
git clone https://github.com/iNavFlight/inav.git

You are ready! You now have a folder called inav in the root of C drive that you can edit in windows

Building (example):

For detailed build instrusctions see Building in Linux

Launch Ubuntu: Click Windows Start button then scroll and lauch "Ubuntu"

Building from Ubuntu command line

cd /mnt/c/inav

Do it onece to prepare build environment

mkdir build
cd build
cmake ..

Then to build

cd build
make MATEKF722

Flashing:

Launch windows configurator GUI and from within the firmware flasher select Load firmware[Local] Hex files can be found in the folder c:\inav\build

Troubleshooting

Syntax error: "(" unexpected

dzikuvx@BerlinAtHome:/mnt/c/Users/pspyc/Documents/Projects/inav/build$ make MATEKF722SE
Generating MATEKF722SE/settings_generated.h, MATEKF722SE/settings_generated.c
/bin/sh: 1: Syntax error: "(" unexpected
make[3]: *** [src/main/target/MATEKF722SE/CMakeFiles/MATEKF722SE.elf.dir/build.make:63: src/main/target/MATEKF722SE/MATEKF722SE/settings_generated.h] Error 2
make[2]: *** [CMakeFiles/Makefile2:33607: src/main/target/MATEKF722SE/CMakeFiles/MATEKF722SE.elf.dir/all] Error 2
make[1]: *** [CMakeFiles/Makefile2:33290: src/main/target/MATEKF722SE/CMakeFiles/MATEKF722SE.dir/rule] Error 2
make: *** [Makefile:13703: MATEKF722SE] Error 2

This error can be triggered by a Windows PATHs included in the Linux Subsystem. The solution is to:

Open Windows RegEdit tool
Find HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Lxss\{GUID}\Flags
Change Flags from 7 to 5
Restart WSL and Windows preferably
cd build
cmake ..
make {TARGET} should be working again

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