Add git submodule instructions to BUILDING.md

doc/BUILDING.md

@@ -7,18 +7,23 @@ own. If you prefer the auto-update feature, you can use the official [mail](http
 
 * An up-to-date version of Git is installed
 * Node.js (check package.json `engines` field for the version)
+* Emscripten 3.1.59
+* WASM2JS (Included in Emscripten)
 
 #### Build steps:
 
 1. Clone the repository: `git clone https://github.com/tutao/tutanota.git`
 2. Switch into the repository directory: `cd tutanota`
 3. Checkout the latest web release tag: `git checkout tutanota-release-xxx`
-4. run `npm ci` to install dependencies.
-5. Build packages: `npm run build-packages`
-6. Build the web part: `node webapp prod`
-7. Switch into the build directory: `cd build`
-8. Run the local server. Either use `node server` or `python -m SimpleHTTPServer 9000`.
-9. Open `localhost:9000` with your favorite browser (tested: Firefox, Chrome/Chromium, Safari).
+4. Initialize liboqs and argon2 submodules: `git submodule init`
+5. Synchronize submodules: `git submodule sync --recursive`
+6. Update submodules: `git submodule update`
+7. run `npm ci` to install dependencies.
+8. Build packages: `npm run build-packages`
+9. Build the web part: `node webapp prod`
+10. Switch into the build directory: `cd build`
+11. Run the local server. Either use `node server` or `python -m SimpleHTTPServer 9000`.
+12. Open `localhost:9000` with your favorite browser (tested: Firefox, Chrome/Chromium, Safari).
 
 ## Building and running your own Tuta Mail Android app
 
@@ -38,15 +43,18 @@ You can add https://github.com/tutao/tutanota/releases.atom to your feed reader
 1. Clone the repository: `git clone https://github.com/tutao/tutanota.git`
 2. Switch into the Tutanota directory: `cd tutanota`
 3. Checkout the latest android release tag: `git checkout tutanota-android-release-xxx`
-4. Install dependencies: `npm ci`
-5. Build packages: `npm run build-packages`
-6. Create a keystore if you don't have
+4. Initialize liboqs and argon2 submodules: `git submodule init`
+5. Synchronize submodules: `git submodule sync --recursive`
+6. Update submodules: `git submodule update`
+7. Install dependencies: `npm ci`
+8. Build packages: `npm run build-packages`
+9. Create a keystore if you don't have
    one: `keytool -genkey -noprompt -keystore MyKeystore.jks -alias tutaKey -keyalg RSA -keysize 2048 -validity 10000 -deststoretype pkcs12 -storepass CHANGEME -keypass CHANGEME -dname "CN=com.example"`
-7.
+10.
 
 run `APK_SIGN_ALIAS="tutaKey" APK_SIGN_STORE='MyKeystore.jks' APK_SIGN_STORE_PASS="CHANGEME" APK_SIGN_KEY_PASS="CHANGEME" node android`
 
-7. Install the app on your device: `adb install -r <path-to-apk>` (path as printed by the build script)
+11. Install the app on your device: `adb install -r <path-to-apk>` (path as printed by the build script)
 
 ## Building and running your own Tuta Mail Desktop client
 
@@ -63,7 +71,10 @@ Keep in mind that your own build of Tuta Mail Desktop will not update automatica
 1. Clone the repository: `git clone https://github.com/tutao/tutanota.git`.
 2. Switch into the Tutanota directory: `cd tutanota`
 3. Checkout the latest web release tag: `git checkout tutanota-release-xxx`
-4. Run `npm ci` to install dependencies.
+4. Initialize liboqs and argon2 submodules: `git submodule init`
+5. Synchronize submodules: `git submodule sync --recursive`
+6. Update submodules: `git submodule update`
+7. Run `npm ci` to install dependencies.
 
 ### Build: