Refactor rclone build script.

- Take ANDROID_HOME environment into account (fixes #66)
- Automatically install expected NDK version when possible, otherwise
  provide a relevant error message
- Configure rclone, NDK, and toolchain versions in gradle.properties
  rather than build.gradle
- Refactor code into separate functions and tasks so as to limit code
  duplication and make the build script be more manageable
- Drop support for Windows x86

.github/workflows/android.yml

@@ -26,10 +26,11 @@ jobs:
       with:
         go-version: 1.20
       id: go
-    - name: Force NDK version
-      run: echo "y" | sudo ${ANDROID_HOME}/tools/bin/sdkmanager --install "ndk;25.0.8775105"
-    - name: Build rclone
-      run: ./gradlew rclone:buildAll
+    - name: Install NDK
+      run: |
+        NDK_VERSION="$(grep -E "^de\.felixnuesse\.extract\.ndkVersion=" gradle.properties | cut -d'=' -f2)"
+        yes | sudo "${ANDROID_HOME}/tools/bin/sdkmanager" --licenses
+        sudo "${ANDROID_HOME}/tools/bin/sdkmanager" "ndk;${NDK_VERSION}"
     - name: Build app
       run: ./gradlew assembleOssDebug
     - name: Upload APK (arm)

.gitignore

@@ -59,7 +59,6 @@ freeline_project_description.json
 # Don't version native libraries or IDE artifacts. Module config should be done in gradle.
 # Generated artifacts (apks, libraries) just slow down cloning and can be recreated from source
 # anyways.
-app/lib/
 release/
 
 .idea/encodings.xml

app/.gitignore

@@ -1 +1,2 @@
 /build
+/lib

app/build.gradle

@@ -10,7 +10,7 @@ android {
         }
     }
     compileSdkVersion 33
-    ndkVersion '25.0.8775105'
+    ndkVersion project.properties['de.felixnuesse.extract.ndkVersion']
     defaultConfig {
         applicationId 'de.felixnuesse.extract'
         minSdkVersion 23
@@ -67,10 +67,11 @@ android {
     }
 
     project.ext.versionCodes = [
-            'armeabi-v7a': 6,
-            'arm64-v8a'  : 7,
-            'x86'        : 8,
-            'x86_64'     : 9]
+        'armeabi-v7a': 6,
+        'arm64-v8a'  : 7,
+        'x86'        : 8,
+        'x86_64'     : 9
+    ]
 
     android.applicationVariants.all { variant ->
         variant.outputs.each { output ->

build.gradle

@@ -1,7 +1,6 @@
 // Top-level build file where you can add configuration options common to all sub-projects/modules.
 
 buildscript {
-
     ext.kotlinVersion = '1.7.20'
     repositories {
         google()

gradle.properties

@@ -14,3 +14,6 @@
 org.gradle.jvmargs=-Xmx2048M -Dkotlin.daemon.jvm.options\="-Xmx2048M"
 android.enableJetifier=false
 android.useAndroidX=true
+de.felixnuesse.extract.rCloneVersion=1.61.1
+de.felixnuesse.extract.ndkVersion=25.0.8775105
+de.felixnuesse.extract.ndkToolchainVersion=33

rclone/.gitignore

@@ -1 +1 @@
-/gopath
+/cache