Fix #47: Build from source

rclone/.gitignore

@@ -0,0 +1 @@
+/gopath

rclone/build.gradle

@@ -0,0 +1,101 @@
+def repository = 'github.com/rclone/rclone'
+def buildTag = 'v1.51.0'
+
+import java.nio.file.Paths
+def osName = System.properties['os.name'].toLowerCase()
+def osArch = System.properties['os.arch']
+def String os
+if (osName.contains('windows')) {
+    if(osArch.equals('amd64')) {
+        os = "windows-x86_64"
+    } else if (osArch.equals('x86')) {
+        os = "windows"
+    }
+} else if (osName.contains("linux")) {
+    os = "linux-x86_64"
+} else if (osName.contains('mac')) {
+    os = "darwin-x86_64"
+}
+
+task fetchRclone(type: Exec) {
+    mkdir "gopath"
+    environment 'GOPATH', Paths.get(projectDir.absolutePath, 'gopath')
+    commandLine 'go', 'get', '-d', repository
+}
+
+task checkoutRclone(type: Exec) {
+    dependsOn fetchRclone
+    workingDir Paths.get(System.getenv('GOPATH'), "src/${repository}".split('/'))
+    commandLine 'git', 'checkout', buildTag
+}
+
+task cleanNative {
+    enabled = false
+    doLast {
+        delete '../app/lib/armeabi-v7a/librclone.so'
+        delete '../app/lib/arm64-v8a/librclone.so'
+        delete '../app/lib/x86/librclone.so'
+        delete '../app/lib/x86_64/librclone.so'
+    }
+}
+
+task buildArm(type: Exec) {
+    dependsOn checkoutRclone
+    environment 'GOPATH', Paths.get(projectDir.absolutePath, 'gopath')
+    def String crossCompiler = Paths.get(System.getenv('ANDROID_HOME'), 'ndk-bundle', 'toolchains', 'llvm', 'prebuilt', os, 'bin', 'armv7a-linux-androideabi21-clang')
+    environment 'CC', crossCompiler
+    environment 'CC_FOR_TARGET', crossCompiler
+    environment 'GOOS', 'android'
+    environment 'GOARCH', 'arm'
+    environment 'GOARM', '7'
+    environment 'CGO_ENABLED', '1'
+    commandLine 'go', 'build', '-v', '-tags', 'linux', '-o', '../app/lib/armeabi-v7a/librclone.so', repository
+}
+
+task buildArm64(type: Exec) {
+    dependsOn checkoutRclone
+    environment 'GOPATH', Paths.get(projectDir.absolutePath, 'gopath')
+    def String crossCompiler = Paths.get(System.getenv('ANDROID_HOME'), 'ndk-bundle', 'toolchains', 'llvm', 'prebuilt', os, 'bin', 'aarch64-linux-android21-clang')
+    environment 'CC', crossCompiler
+    environment 'CC_FOR_TARGET', crossCompiler
+    environment 'GOOS', 'android'
+    environment 'GOARCH', 'arm64'
+    environment 'CGO_ENABLED', '1'
+    commandLine 'go', 'build', '-v', '-tags', 'linux', '-o', '../app/lib/arm64-v8a/librclone.so', repository
+}
+
+task buildx86(type: Exec) {
+    dependsOn checkoutRclone
+    environment 'GOPATH', Paths.get(projectDir.absolutePath, 'gopath')
+    def String crossCompiler = Paths.get(System.getenv('ANDROID_HOME'), 'ndk-bundle', 'toolchains', 'llvm', 'prebuilt', os, 'bin', 'i686-linux-android21-clang')
+    environment 'CC', crossCompiler
+    environment 'CC_FOR_TARGET', crossCompiler
+    environment 'GOOS', 'android'
+    environment 'GOARCH', '386'
+    environment 'CGO_ENABLED', '1'
+    commandLine 'go', 'build', '-v', '-tags', 'linux', '-o', '../app/lib/x86/librclone.so', repository
+}
+
+task buildx64(type: Exec) {
+    dependsOn checkoutRclone
+    environment 'GOPATH', Paths.get(projectDir.absolutePath, 'gopath')
+    def String crossCompiler = Paths.get(System.getenv('ANDROID_HOME'), 'ndk-bundle', 'toolchains', 'llvm', 'prebuilt', os, 'bin', 'x86_64-linux-android21-clang')
+    environment 'CC', crossCompiler
+    environment 'CC_FOR_TARGET', crossCompiler
+    environment 'GOOS', 'android'
+    environment 'GOARCH', 'amd64'
+    environment 'CGO_ENABLED', '1'
+    commandLine 'go', 'build', '-v', '-tags', 'linux', '-o', '../app/lib/x86_64/librclone.so', repository
+}
+
+task buildNative {
+    dependsOn fetchRclone
+    dependsOn checkoutRclone
+    dependsOn buildArm
+    dependsOn buildArm64
+    dependsOn buildx86
+    dependsOn buildx64
+}
+
+buildNative.mustRunAfter(buildArm, buildArm64, buildx86, buildx64)
+defaultTasks 'buildNative'

settings.gradle

@@ -1 +1 @@
-include ':app', ':safdav'
+include ':app', ':safdav', ':rclone'