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inav/docs/development/Building in Windows 10 with Linux Subsystem.md
Pawel Spychalski (DzikuVx) be42332e18 WSL error troubleshooting
2020-09-24 10:10:52 +02:00

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# 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:
1. Go to Microsoft store https://www.microsoft.com/en-gb/store/b/home
1. Search and install most recent Ubuntu LTS version
1. When download completed, select `Launch Ubuntu`
1. When prompted enter a user name and password which you will need to remember
1. 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:
1. `sudo apt update`
Install Git, Make, gcc and Ruby
1. `sudo apt-get install git`
1. `sudo apt-get install make`
1. `sudo apt-get install cmake`
1. `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](https://www.microsoft.com/store/productId/9N6SVWS3RX71)
## Downloading the iNav repository (example):
Mount MS windows C drive and clone iNav
1. `cd /mnt/c`
1. `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](Building%20in%20Linux.md)
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:
1. Open Windows RegEdit tool
1. Find `HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Lxss\{GUID}\Flags`
1. Change `Flags` from `7` to `5`
1. Restart WSL and Windows preferably
1. `cd build`
1. `cmake ..`
1. `make {TARGET}` should be working again