...

app/build.gradle.kts

@@ -18,8 +18,15 @@ android {
         versionCode = 38
         versionName = "2.8.2"
         multiDexEnabled = true
+
+        externalNativeBuild {
+            cmake {
+                cppFlags += "-std=c++11"
+            }
+        }
     }
 
+
     buildTypes {
         getByName("debug") {
             isMinifyEnabled = false
@@ -27,19 +34,23 @@ android {
             isDebuggable = true
 //            applicationIdSuffix = ".debug"
 //            versionNameSuffix = "-debug"
-            buildConfigField("Long","BuildDateTime", getDateTime().toString().plus("L"))
+            buildConfigField("Long","BuildDateTime", "${getDateTime()}L")
             resValue ("string", "app_name", "Bums Launcher Debug")
         }
 
         getByName("release") {
             isMinifyEnabled = true
             isShrinkResources = true
-            buildConfigField("Long","BuildDateTime", getDateTime().toString().plus("L"))
+            buildConfigField("Long","BuildDateTime", "${getDateTime()}L")
             proguardFiles (getDefaultProguardFile("proguard-android-optimize.txt"), "proguard-rules.pro")
             resValue ("string", "app_name", "Bums Launcher")
         }
     }
-
+    externalNativeBuild {
+        cmake {
+            path = file("src/main/cpp/CMakeLists.txt")
+        }
+    }
     signingConfigs {
 
         getByName("debug") {
@@ -80,6 +91,7 @@ android {
     kotlinOptions {
         jvmTarget = "1.8"
     }
+
 }
 
 dependencies {