Compile openfyde

Compile the OpenFyde Image for Fydetab Duo by synthesizing official instructions and forum articles, aiming to compile the latest R120 version image.

Fyde OS originally provided a domestic accelerated mirror, but it seems to be unavailable now. Therefore, a VPN is required to complete the following content.

System Preparation

System: Ubuntu 22.04, AMD Ryzen 5 1600 Six-Core @ 12x 3.2GHz, 64G
Install necessary software: sudo apt-get install git gitk git-gui curl xz-utils python3-virtualenv python3-oauth2client lvm2 thin-provisioning-tools repo
Install depot_tools:
- Clone the project: git clone https://chromium.googlesource.com/chromium/tools/depot_tools.git && cd depot_tools && git checkout e121d14b12412e95ac833cfd31602b674499ea25
- Set environment variables: export PATH=/mnt/hdd1/chromeos/openfyde/depot_tools:$PATH
- You can also set export DEPOT_TOOLS_UPDATE=0 to avoid tool updates. If the network is stable, this setting is optional.

Api Key Preparation

Since I am still using a Google account under Fydeos, I applied for a Google API key instead of Fydeos’s. Follow the steps in the official documentation
General steps:
- Join the chromium-dev development group
- Login to https://cloud.google.com/console
- Create a new project, e.g., openfyde.
- Select API Services > Library, find the following API projects, and enable them one by one:
  - Cloud Search API
  - Google Drive API
  - Safe Browsing API
  - Time Zone API
- Go to API Services > Credentials, configure OAuth information as prompted, then create credentials > Create OAuth client ID. I chose the desktop application type (no Others option as described in the documentation).
- Create credentials > Create API key to obtain the key.
- Save the client ID, client secret, and API key, and store them in the ~/.googleapikeys file as follows:
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  'google_api_key': 'your api key',
  'google_default_client_id': 'your client id',
  'google_default_client_secret': 'your client secret',

Source Code Clone

Create a directory: mkdir -p r120/openfyde

Configure Git, otherwise cloning the code will result in errors:

1 2	git config --global user.name "sylens" git config --global user.email "silenseek14@gmail.com"

Clone the source code: The R126 version of openFyde/manifest.git is not released，so only R120 can be compiled. repo sync -j8 requires downloading a large amount of source code, with chromium being the largest at nearly 40G. If the download fails due to network issues, running it again will restart the download. Ensure your VPN has sufficient bandwidth.

repo init -u https://chromium.googlesource.com/chromiumos/manifest.git --repo-url https://chromium.googlesource.com/external/repo.git -b release-R120-15662.B

git clone https://github.com/openFyde/manifest.git openfyde/manifest -b r120-dev
ln -snfr openfyde/manifest .repo/local_manifests
repo sync -j8
cd openfyde/chromium
gclient sync

Entering the Chroot Environment

Return to the r120 directory and run cros_sdk to start downloading the SDK and preparing the environment. This process takes a long time.

Starting the Compilation

Since the current version of archero is unusable, modifications are needed to avoid errors.
After entering chroot, you will be in /mnt/host/source/src/scripts by default. The files that need modification are:
- /mnt/host/source/src/overlays/overlay-fydetab_duo-openfyde/metadata/layout.conf: Delete archero、tablet、ai-dev in the first line
- /mnt/host/source/openfyde/overlays/overlay-fydetab_duo-openfyde/profiles/base/parent: Delete the second line’sarchero:base
Note: All compilation commands are executed within chroot.
Run setup_board --board=fydetab_duo-openfyde
- It appears that the setup is not fully completed, but the target directory has been generated.
Install capnproto: sudo emerge capnproto
Modify /mnt/host/source/chromite/lib/dlc_allowlist.py: Change line 14 to DLC_FACTORY_INSTALL = (r"termina-dlc", r"sample-dlc",), i.e., add r"termina-dlc"
Run cros build-packages --jobs=4 '--board=fydetab_duo-openfyde' --no-withautotest --autosetgov --no-use-any-chrome
After completion, build the image with cros build-image --board=fydetab_duo-openfyde --noenable_rootfs_verification

Other Issues During Compilation

Compilation interrupted abnormally: Encountered an abnormal interruption once. Re-entering the environment and compiling again caused inexplicable issues. To start over, delete the chroot and out folders, then run cros_sdk again from the beginning.
Virtual hard disk settings: As hinted by a forum expert, an additional setting is required:
- Open /etc/sysctl.conf and add vm.max_map_count=524288.
- Run sudo sysctl -p.