fix using debug library compilation in release mode

android/build.gradle

@@ -19,7 +19,7 @@ repositories {
 
 android {
     compileSdkVersion 25
-    buildToolsVersion "25.0.2"
+    buildToolsVersion "25.0.3"
     defaultConfig {
         applicationId "org.purplei2p.i2pd"
         targetSdkVersion 25
@@ -49,7 +49,7 @@ android {
     }
     buildTypes {
         release {
-            minifyEnabled false
+            minifyEnabled true
             signingConfig signingConfigs.orignal
             proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-project.txt'
         }

android/jni/Application.mk

@@ -19,7 +19,8 @@ ifeq ($(TARGET_ARCH_ABI),armeabi-v7a)
 APP_CPPFLAGS += -DANDROID_ARM7A
 endif
 
-APP_OPTIM  := debug
+# Forcing debug optimization. Use `ndk-build NDK_DEBUG=1` instead.
+#APP_OPTIM  := debug
 
 # git clone https://github.com/PurpleI2P/Boost-for-Android-Prebuilt.git
 # git clone https://github.com/PurpleI2P/OpenSSL-for-Android-Prebuilt.git

android_binary_only/jni/Application.mk

@@ -21,7 +21,8 @@ ifeq ($(TARGET_ARCH_ABI),armeabi-v7a)
 APP_CPPFLAGS += -DANDROID_ARM7A
 endif
 
-APP_OPTIM  := debug
+# Forcing debug optimization. Use `ndk-build NDK_DEBUG=1` instead.
+#APP_OPTIM  := debug
 
 # git clone https://github.com/PurpleI2P/Boost-for-Android-Prebuilt.git
 # git clone https://github.com/PurpleI2P/OpenSSL-for-Android-Prebuilt.git