Gradle

Gradle support for Android projects.
For command line build, `gradle assembe` will trigger build phase

 - Config for Android .so file generation
 - Commented build.gradle
 - Automatic file copy after build
 - Dummy AndroidManifest file

build.gradle

@@ -10,28 +10,11 @@ buildscript {
     }
 }
 
-allprojects {
-    repositories {
-        google()
-        jcenter()
-    }
-}
-
 // Output: Shared library (.so) for Android 
 apply plugin: 'com.android.library'
 
 android {
-    compileSdkVersion 24    // Android 7.0
-
-    // External Native build
-    //  - Use existing CMakeList.txt
-    //  - Give path to CMake. This gradle file should be 
-    //    neighbor of the top level cmake
-    externalNativeBuild {
-        cmake {
-            path "CMakeLists.txt"
-        }
-    }
+    compileSdkVersion 25    // Android 7.0
 
     // Target ABI
     //  - This option controls target platform of module
@@ -40,72 +23,76 @@ android {
     //    if bad, both toolchains might not support it
     splits {
         abi {
-            // Be general, as it can...
             enable true
-            universalApk true 
-            // We can specify platforms, like...
-            // reset()
-            // include "x86", "x86_64", "armeabi-v7a", "arm64-v8a"
+            // Be general, as much as possible ...
+            // universalApk true 
+
+            // Specify platforms for Application
+            reset()
+            include "x86", "x86_64", "armeabi-v7a", "arm64-v8a"
         }
     }
 
     defaultConfig {
         minSdkVersion 21    // Android 5.0+
-        targetSdkVersion 24 // Follow Compile SDK
+        targetSdkVersion 25 // Follow Compile SDK
         versionCode 16      // Follow release count
         versionName "4.1.0" // Follow Official version
         testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
-
-        // - Specify Android STL
-        // - Additional flags
+        
         externalNativeBuild {
             cmake {
-                arguments "-DANDROID_STL=c++_shared"
-                          "-DBUILD_SHARED=true"
+                arguments "-DANDROID_STL=c++_shared"    // Specify Android STL
+                arguments "-DBUILD_SHARED_LIBS=true"    // Build shared object
+                arguments "-DFMT_TEST=false"            // Skip test
+                arguments "-DFMT_DOC=false"             // Skip document
                 cppFlags  "-std=c++14"
             }
         }
+        println("Gradle CMake Plugin: ")
+        println(externalNativeBuild.cmake.cppFlags)
+        println(externalNativeBuild.cmake.arguments)
     }
 
+    // External Native build
+    //  - Use existing CMakeList.txt
+    //  - Give path to CMake. This gradle file should be 
+    //    neighbor of the top level cmake
+    externalNativeBuild {
+        cmake {
+            path "CMakeLists.txt"
+            // buildStagingDirectory "./build"  // Custom path for cmake output
+        }
+        //println(cmake.path)
+    }
+    
     sourceSets{
-        // gradle assemble
-        main.setRoot('./')
+        // Android Manifest for Gradle
         main {
             manifest.srcFile 'support/AndroidManifest.xml'
         }
     }
-    // // Custom SourceSet for JNI adapter
-    // //  - Source path/directory for Gradle
-    // sourceSets {
-    //     // gradle assemble
-    //     main.setRoot('droid/main')
-    //     // main {
-    //     //     manifest.srcFile 'droid/main/AndroidManifest.xml'
-    //     //     java.srcDirs = ['droid/main/java']
-    //     //     jniLibs.srcDirs = ['droid/main/jniLibs']
-    //     //     res.srcDirs = ['droid/main/res']
-    //     //     assets.srcDirs = ['droid/main/assets']
-    //     // }
-    //     // gradle connectedAndroidTest
-    //     androidTest.setRoot('droid/androidTest')
-    //     // androidTest {
-    //     //     java.srcDir 'droid/androidTest/java'
-    //     // }
-    //     // If ABI includes `armeabi-v7a`, the following directory MUST exists.
-    //     // Notice that the path is relative to `build.gradle` file
-    //     //      `droid/main/jniLibs/armeabi-v7a`
-    //     //      `libs/armeabi-v7a`
-    //     // The library files in there will be installed automatically
-    //     main.jniLibs.srcDirs = ['droid/main/jniLibs', 'libs']
-    //     androidTest.jniLibs.srcDirs = ['droid/main/jniLibs', 'libs']
-    // }
 }
 
-dependencies {
-    implementation fileTree(dir: 'libs', include: ['*.jar'])
-
-    implementation 'com.android.support:appcompat-v7:24.+'  // Follow target SDK
-    testImplementation 'junit:junit:4.12'
-    androidTestImplementation 'com.android.support.test:runner:1.0.1'
-    androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.1'
+assemble.doLast
+{
+    // Instead of `ninja install`, Gradle will deploy the files.
+    // We are doing this since FMT is dependent to the ANDROID_STL after build
+    copy {
+        from 'build/intermediates/cmake'
+        into 'libs'
+    }
+    // Copy debug binaries
+    copy {
+        from 'libs/debug/obj'
+        into 'libs/debug'
+    }
+    // Copy Release binaries
+    copy {
+        from 'libs/release/obj'
+        into 'libs/release'
+    }
+    // Remove empty directory
+    delete 'libs/debug/obj'
+    delete 'libs/release/obj'
 }