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# iodéOS build instructions
For the most part, building iodéOS is not much different than building [LineageOS](https://lineageos.org/). You can refer for example to LineageOS build instructions for [Pixel 5](https://wiki.lineageos.org/devices/redfin/build). Please note that these instructions concern devices officially supported by LineageOS: in order to build iodéOS for unsupported devices, you will have to create/modify a device tree for your phone.
## Obtaining a basic build: differences with LineageOS instructions
We list here the differences w.r.t. LineageOS build instructions, which are sufficient to obtain a running iodéOS build.
### Part "Install the build packages"
We use [Git LFS](https://git-lfs.github.com/) to maintain the `vendor/extra` repository where prebuilt applications are stored. You must install Git LFS on your system, for example the `git-lfs` package on Debian or Ubuntu.
### Part "Initialize the LineageOS source repository"
To initialize the iodéOS source repository, you must replace the Android manifest repository in the `repo init ...` command:
```
repo init -u https://gitlab.iode.tech/os/public/manifests/android.git -b v6-staging
```
The branch `v6-staging` corresponds to the latest active development branch of iodéOS v6, and may be subject to deep changes. iodéOS official stable release branches will be added when available.
### Part "Download the source code"
After having sucessfully downloaded the sources with the `repo sync` command, you must download the Git LFS stored objects:
```
cd vendor/extra
git lfs pull iode v6-staging
```
### That's all folks
You can now start building iodéOS, after carefully following LineageOS build instructions.
## Fine-tune your iodéOS build
Some iodéOS features need some more work.
### Make SafetyNet pass
Due to recent changes in the way iodéOS pass safetynet, no more additionnal config is required: it should work out-of-the-box.
### Sign your builds
You can sign your builds with developer keys by creating a directory called `certs` at the root of your source tree, and generating signing keys in it (modify the `subject` variable in the code below). There is no need to modify iodéOS sources, in particular the `PRODUCT_DEFAULT_DEV_CERTIFICATE` variable will be modified accordingly.
```
subject='/C=US/ST=France/L=Toulouse/O=iodeOS/OU=iodeOS/CN=iodeOS/emailAddress=suport@iode.tech'
mkdir certs
for x in releasekey platform shared media networkstack testkey; do \
./development/tools/make_key certs/$x "$subject"; \
done
```
### Configure Smart Charging
Smart charging has been removed, as there is now the new Charging Control feature in LineageOS.