tup.config: Document Android settings;
@@ -66,6 +66,14 @@ CONFIG_GPU=n
CONFIG_GPU_BACKEND=gl
## Android settings
+# ANDROID_SDK: The path to the Android SDK (should have folder named 'sdk' in it)
+# ANDROID_VERSION: The Android version to build against (usually 21 or 26)
+# ANDROID_BUILD_TOOLS_VERSION: The version of the Android build tools to use (in build-tools folder)
+# ANDROID_HOST_TAG: The host machine tag (e.g. windows-x86_64, darwin-x86_64)
+# ANDROID_KEYSTORE: The path to the keystore (use keytool to generate)
+# ANDROID_KEYSTORE_PASS: The keystore password (use either pass:<string>, env:<var>, or file:<path>)
+# ANDROID_MANIFEST: Optional path to a custom Android manifest file (xml)
+# ANDROID_ASSETS: Optional path to a folder to embed as the assets folder of the apk
CONFIG_ANDROID_SDK=
CONFIG_ANDROID_VERSION=
CONFIG_ANDROID_BUILD_TOOLS_VERSION=
