Add acl_ndk20 build module.

Author: zhengshuxin

android/acl_c++_shared/build.gradle

@@ -1,5 +1,11 @@
 apply plugin: 'com.android.library'
+
+/*
 buildscript {
+    plugins {
+        id 'com.android.library'
+    }
+
     repositories {
         google()
         jcenter()
@@ -11,6 +17,7 @@ buildscript {
     }
     //implementation {}
 }
+*/
 
 android {
     compileSdkVersion 28

android/acl_c++_shared/gradlew

@@ -4,7 +4,6 @@
 # Location of the SDK. This is only used by Gradle.
 # For customization when using a Version Control System, please read the
 # header note.
-#Thu Oct 17 17:02:59 CST 2019
-#ndk.dir=/Users/shuxinzheng/Library/Android/sdk/ndk-bundle
-ndk.dir=/Users/shuxinzheng/Library/Android/ndk
-sdk.dir=/Users/shuxinzheng/Library/Android/sdk
+#Thu Nov 20 11:45:02 CST 2025
+ndk.dir=/opt/soft/android/ndk
+sdk.dir=/opt/soft/android/sdk

android/acl_c++_shared/local.properties

@@ -0,0 +1,15 @@
+*.iml
+.gradle
+/local.properties
+/.idea/caches
+/.idea/libraries
+/.idea/modules.xml
+/.idea/workspace.xml
+/.idea/navEditor.xml
+/.idea/assetWizardSettings.xml
+.DS_Store
+/build
+/captures
+.externalNativeBuild
+.cxx
+local.properties

android/acl_ndk20/.gitignore

@@ -0,0 +1,53 @@
+apply plugin: 'com.android.library'
+
+android {
+    compileSdkVersion 36
+    //buildToolsVersion "28.0.3"
+
+    defaultConfig {
+        minSdkVersion 14
+        targetSdkVersion 36
+
+        externalNativeBuild {
+            cmake {
+                arguments "-DANDROID_STL=c++_shared"
+                arguments "-DHAS_ATOMIC=YES"
+                arguments "-DCMAKE_BUILD_TYPE=RELEASE"
+                arguments "-DCMAKE_CXX_FLAGS_RELEASE=-O3"
+                arguments "-DCMAKE_C_FLAGS_RELEASE=-O3"
+                arguments "-DACL_CLIENT_ONLY=YES"
+                arguments "-DHAS_MBEDTLS=YES"
+                arguments "-DACL_BUILD_SHARED=YES"
+                arguments "-Wl,-z,max-page-size=16384"
+                arguments "-Wl,-z,common-page-size=16384"
+
+                abiFilters 'arm64-v8a', 'armeabi-v7a', 'x86'
+                targets 'acl_static', 'protocol_static', 'acl_cpp_static', 'fiber_static', 'fiber_cpp_static', 'acl_shared', 'protocol_shared', 'acl_cpp_shared', 'fiber_shared', 'fiber_cpp_shared'  // for ndk20 or above
+            }
+        }
+    }
+
+    buildTypes {
+        release {
+            minifyEnabled true
+            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
+        }
+
+        debug {
+            jniDebuggable true
+            debuggable true
+            minifyEnabled false
+        }
+    }
+
+    externalNativeBuild {
+        cmake {
+            path '../../../CMakeLists.txt'
+            //version "3.6.0"
+        }
+    }
+}
+
+dependencies {
+    implementation fileTree(include: ['*.jar'], dir: 'libs')
+}

android/acl_ndk20/acl_one/build.gradle

@@ -0,0 +1,8 @@
+<manifest xmlns:android="http://schemas.android.com/apk/res/android" package="com.acl_dev.acl">
+
+    <application android:allowBackup="true" android:label="@string/app_name"
+        android:supportsRtl="true">
+
+    </application>
+
+</manifest>

android/acl_ndk20/acl_one/src/main/AndroidManifest.xml

@@ -0,0 +1,3 @@
+<resources>
+    <string name="app_name">Acl</string>
+</resources>

android/acl_ndk20/acl_one/src/main/res/values/strings.xml

@@ -0,0 +1,16 @@
+buildscript {
+    repositories {
+        google()
+        jcenter()
+    }
+    dependencies {
+        classpath 'com.android.tools.build:gradle:4.0.2'
+    }
+}
+
+allprojects {
+    repositories {
+        google()
+        jcenter()
+    }
+}

android/acl_ndk20/build.gradle

@@ -0,0 +1,20 @@
+# Project-wide Gradle settings.
+# IDE (e.g. Android Studio) users:
+# Gradle settings configured through the IDE *will override*
+# any settings specified in this file.
+# For more details on how to configure your build environment visit
+# http://www.gradle.org/docs/current/userguide/build_environment.html
+# Specifies the JVM arguments used for the daemon process.
+# The setting is particularly useful for tweaking memory settings.
+org.gradle.jvmargs=-Xmx1536m
+# When configured, Gradle will run in incubating parallel mode.
+# This option should only be used with decoupled projects. More details, visit
+# http://www.gradle.org/docs/current/userguide/multi_project_builds.html#sec:decoupled_projects
+# org.gradle.parallel=true
+# AndroidX package structure to make it clearer which packages are bundled with the
+# Android operating system, and which are packaged with your app's APK
+# https://developer.android.com/topic/libraries/support-library/androidx-rn
+android.useAndroidX=true
+# Automatically convert third-party libraries to use AndroidX
+android.enableJetifier=true
+