Wiki/wiki-rtd/docs/wiki_development/general/build-locally.md
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# Development Build Locally Notes
This is WIP to help build RetroDECK locally.
It is based on notes taken while adding the Ruffle(Flash Emulator) to the RetroDECK project.
## Overview
RetroDECK is a big project in terms of scope and build size! It creates a 1.4GB flatpak file and the build folder is about 23GB.
It takes about 3 hours to build on an 8 core PC.
It would also be worth running RetroDECK in [debug mode](https://retrodeck.readthedocs.io/en/latest/wiki_development/general/debug-mode/) to get familiar with how /apps folder and other read only areas of the flatpak.
<img src="../../../wiki_images/graphics/development/retrodeck-overview.png" width="500">
## Build Process
### Download/Clone RetroDeck
Clone the repository. The --recursive option is used to ensure the RetroDECK sub modules are download(ie Emulators from other projects). The only element that is not downloaded for changing/editing is the [RetroDECK fork of ES-DE](https://github.com/XargonWan/RetroDECK-ES-DE). That should only be needed if you wish to add a new emulator via ES-DE.
```bash
git clone --recursive https://github.com/XargonWan/RetroDECK
```
If you missed doing a recursive download then can also use the command below. The command is also initiated as part of the build process.
```bash
git submodule update --init --recursive
```
Then use git checkout to select the latest cooker branch.
### Build locally via bash script
```bash
cd RetroDECK
developer_toolbox/build_retrodeck_locally.sh
```
Have a look at what the script does first and look at the corresponding automation_tools/ folder that the script above references for the build
The build will take about 3 hours on a relatively pc/laptop.
The build process creates a flatpak_builder file.
### Build locally installed github runner
Creates an artifact on Guthub and a local file in actions-runners
## FAQ
Crash during local sh build?
- Stay Calm!
- Restart the PC/laptop.
- re run command below it should hopefully continue from the last good build action.
```bash
developer_toolbox/build_retrodeck_locally.sh
```
Crash during local github runner build?
- Stay Calm!
- Restart the PC/laptop.
- make sure runner started and then re run the failed Github action