Support Google Play 16 KB Page Size Requirement (#13470)

- See: https://developer.android.com/guide/practices/page-sizes#update-packaging
- Also, make min API uniform at 21 (from 16 and 23 in a few places)

android-project/app/build.gradle

@@ -19,7 +19,7 @@ android {
                 abiFilters 'arm64-v8a'
             }
             cmake {
-                arguments "-DANDROID_PLATFORM=android-21", "-DANDROID_STL=c++_static"
+                arguments "-DANDROID_PLATFORM=android-21", "-DANDROID_STL=c++_static", "-DAPP_SUPPORT_FLEXIBLE_PAGE_SIZES=true"
                 // abiFilters 'armeabi-v7a', 'arm64-v8a', 'x86', 'x86_64'
                 abiFilters 'arm64-v8a'
             }

android-project/app/jni/Application.mk

@@ -7,4 +7,7 @@
 APP_ABI := armeabi-v7a arm64-v8a x86 x86_64
 
 # Min runtime API level
-APP_PLATFORM=android-16
+APP_PLATFORM=android-21
+
+# https://developer.android.com/guide/practices/page-sizes#update-packaging
+APP_SUPPORT_FLEXIBLE_PAGE_SIZES := true

android-project/app/jni/src/CMakeLists.txt

@@ -26,4 +26,9 @@ endif()
 add_library(main SHARED
     YourSourceHere.c
 )
+
+#https://developer.android.com/guide/practices/page-sizes#update-packaging
+target_link_options(main PRIVATE "-Wl,-z,max-page-size=16384")
+target_link_options(main PRIVATE "-Wl,-z,common-page-size=16384")
+
 target_link_libraries(main PRIVATE SDL3::SDL3)