Implement Pure Cpp on Android

Author: Zach Dean

android/CMakeLists.txt

@@ -1,11 +1,24 @@
-cmake_minimum_required(VERSION 3.13)
-
+cmake_minimum_required(VERSION 3.4.1)
 project(PureCppTurboModuleLibrary)
 
-add_library(pure-cpp-turbo-module-library SHARED ../cpp/PureCppImpl.cpp)
+set (CMAKE_VERBOSE_MAKEFILE ON)
+
+add_library(
+    pure-cpp-turbo-module-library
+    STATIC
+    ../cpp/PureCppImpl.cpp
+)
 
-# Specifies paths to native header files.
-include_directories(
-            ../cpp
-            generated/jni
+# Specifies a path to native header files.
+target_include_directories(
+    pure-cpp-turbo-module-library
+    PUBLIC
+    ../cpp
 )
+
+target_link_libraries(
+    pure-cpp-turbo-module-library
+    jsi
+    reactnative
+    react_codegen_RNPureCppTurboModuleLibrarySpec
+)

android/build.gradle

@@ -121,8 +121,8 @@ dependencies {
   implementation "org.jetbrains.kotlin:kotlin-stdlib:$kotlin_version"
 }
 
-//react {
-//  jsRootDir = file("../src/")
-//  libraryName = "PureCppTurboModuleLibrary"
-//  codegenJavaPackageName = "com.purecppturbomodulelibrary"
-//}
+react {
+ jsRootDir = file("../src/")
+ libraryName = "PureCppTurboModuleLibrary"
+ codegenJavaPackageName = "com.purecppturbomodulelibrary"
+}

android/src/main/java/com/purecppturbomodulelibrary/PureCppTurboModuleLibraryPackage.kt

@@ -0,0 +1,21 @@
+package com.purecppturbomodulelibrary
+
+import com.facebook.react.BaseReactPackage
+import com.facebook.react.bridge.NativeModule
+import com.facebook.react.bridge.ReactApplicationContext
+import com.facebook.react.module.model.ReactModuleInfo
+import com.facebook.react.module.model.ReactModuleInfoProvider
+import java.util.HashMap
+
+class PureCppTurboModuleLibraryPackage : BaseReactPackage() {
+  override fun getModule(name: String, reactContext: ReactApplicationContext): NativeModule? {
+    return null
+  }
+
+  override fun getReactModuleInfoProvider(): ReactModuleInfoProvider {
+    return ReactModuleInfoProvider {
+      val moduleInfos: MutableMap<String, ReactModuleInfo> = HashMap()
+      moduleInfos
+    }
+  }
+}

android/src/main/jni/OnLoad.cpp

@@ -5,7 +5,6 @@ namespace facebook::react {
 PureCppImpl::PureCppImpl(std::shared_ptr<CallInvoker> jsInvoker): NativePureCppTurboModuleLibraryCxxSpec(std::move(jsInvoker)) {}
 
 double PureCppImpl::multiply(jsi::Runtime& rt, double a, double b) {
-    printf("PureCppImpl | multiply");
     return a * b;
 }
 

cpp/PureCppImpl.cpp

@@ -6,6 +6,9 @@ module.exports = {
     platforms: {
       android: {
         cmakeListsPath: 'generated/jni/CMakeLists.txt',
+        cxxModuleCMakeListsModuleName: 'pure-cpp-turbo-module-library',
+        cxxModuleCMakeListsPath: 'CMakeLists.txt',
+        cxxModuleHeaderName: 'PureCppImpl',
       },
     },
   },