Split simpleservo into 3 crates for rust, c and jni apis

ports/libsimpleservo/jniapi/build.rs

@@ -0,0 +1,33 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at https://mozilla.org/MPL/2.0/. */
+
+use std::env;
+use std::path::Path;
+
+fn main() {
+    // Get the NDK path from NDK_HOME env.
+    let ndk_path =
+        env::var_os("ANDROID_NDK").expect("Please set the ANDROID_NDK environment variable");
+    let ndk_path = Path::new(&ndk_path);
+
+    // compiling android_native_app_glue.c
+    let c_file = ndk_path
+        .join("sources")
+        .join("android")
+        .join("native_app_glue")
+        .join("android_native_app_glue.c");
+    cc::Build::new()
+        .file(c_file)
+        .warnings(false)
+        .compile("android_native_app_glue");
+
+    // Get the output directory.
+    let out_dir =
+        env::var("OUT_DIR").expect("Cargo should have set the OUT_DIR environment variable");
+
+    println!("cargo:rustc-link-lib=static=android_native_app_glue");
+    println!("cargo:rustc-link-search=native={}", out_dir);
+    println!("cargo:rustc-link-lib=log");
+    println!("cargo:rustc-link-lib=android");
+}