Updating the Android Toolchain file to support using NDK23+ for building

3rdParty packages.

The changes are taking from the
[Toolchain_android.cmake](https://github.com/o3de/o3de/blob/development/cmake/Platform/Android/Toolchain_android.cmake) in the o3de repo.

Signed-off-by: lumberyard-employee-dm <[email protected]>

Scripts/cmake/Platform/Android/Toolchain_android.cmake

@@ -1,7 +1,7 @@
 #
 # Copyright (c) Contributors to the Open 3D Engine Project.
 # For complete copyright and license terms please see the LICENSE at the root of this distribution.
-# 
+#
 # SPDX-License-Identifier: Apache-2.0 OR MIT
 #
 #
@@ -21,7 +21,7 @@ endif()
 
 file(TO_CMAKE_PATH "${LY_NDK_DIR}" LY_NDK_DIR)
 if(NOT LY_NDK_DIR)
-    message(FATAL_ERROR "Environment var LY_NDK_DIR is not set.  Could not find the NDK installation folder")
+    message(FATAL_ERROR "Environment and cache var for NDK is empty. Could not find the NDK installation folder")
 endif()
 
 set(LY_ANDROID_NDK_TOOLCHAIN ${LY_NDK_DIR}/build/cmake/android.toolchain.cmake)
@@ -34,16 +34,24 @@ endif()
 if(NOT ANDROID_ABI)
     set(ANDROID_ABI arm64-v8a)
 endif()
-if(NOT ANDROID_ARM_MODE)
-    set(ANDROID_ARM_MODE arm)
-endif()
-if(NOT ANDROID_ARM_NEON)
-    set(ANDROID_ARM_NEON FALSE)
+
+# Only the 64-bit ANDROID ABIs arm supported
+if(NOT ANDROID_ABI MATCHES "^arm64-")
+    message(FATAL_ERROR "Only the 64-bit ANDROID_ABI's are supported. arm64-v8a can be used if not set")
 endif()
+
+set(MIN_NATIVE_API_LEVEL 24)
+
 if(NOT ANDROID_NATIVE_API_LEVEL)
-    set(ANDROID_NATIVE_API_LEVEL 21)
+    set(ANDROID_NATIVE_API_LEVEL ${MIN_NATIVE_API_LEVEL})
 endif()
 
+if(${ANDROID_NATIVE_API_LEVEL} VERSION_LESS ${MIN_NATIVE_API_LEVEL})
+    message(FATAL_ERROR "Unsupported Android native API version ${ANDROID_NATIVE_API_LEVEL}. Must be ${MIN_NATIVE_API_LEVEL} or above")
+endif()
+
+set(ANDROID_PLATFORM android-${ANDROID_NATIVE_API_LEVEL})
+
 set(CMAKE_C_FLAGS "-fPIC")
 set(CMAKE_CXX_FLAGS "-fPIC")
 
@@ -54,6 +62,12 @@ include(${LY_ANDROID_NDK_TOOLCHAIN})
 
 set(CMAKE_FIND_ROOT_PATH ${BACKUP_CMAKE_FIND_ROOT_PATH})
 
+# The CMake Android-Initialize.cmake(https://gitlab.kitware.com/cmake/cmake/-/blob/v3.21.2/Modules/Platform/Android-Initialize.cmake#L61)
+# script sets CMAKE_FIND_USE_SYSTEM_ENVIRONMENT_PATH to OFF resulting in find_program calls being unable to locate host binaries
+# https://gitlab.kitware.com/cmake/cmake/-/issues/22634
+# Setting back to true to fix our find_program calls
+set(CMAKE_FIND_USE_SYSTEM_ENVIRONMENT_PATH ON)
+
 # Force the ANDROID_LINKER_FLAGS that are set in the NDK's toolchain file into the LINKER_FLAGS for the build and reset
 # the standard libraries
 set(LINKER_FLAGS ${ANDROID_LINKER_FLAGS})
@@ -70,9 +84,9 @@ set(LY_TOOLCHAIN_NDK_API_LEVEL ${ANDROID_PLATFORM_LEVEL})
 set(MIN_NDK_VERSION 21)
 
 if(${LY_TOOLCHAIN_NDK_PKG_MAJOR} VERSION_LESS ${MIN_NDK_VERSION})
-    message(FATAL_ERROR "Unsupported NDK Version ${LY_TOOLCHAIN_NDK_PKG_MAJOR}.${LY_TOOLCHAIN_NDK_PKG_MINOR}.${LY_TOOLCHAIN_NDK_API_LEVEL}. Must be version ${MIN_NDK_VERSION} or above")
+    message(FATAL_ERROR "Unsupported NDK Version ${LY_TOOLCHAIN_NDK_PKG_MAJOR}.${LY_TOOLCHAIN_NDK_PKG_MINOR}. Must be version ${MIN_NDK_VERSION} or above")
 else()
-    message(STATUS "Detected NDK Version ${LY_TOOLCHAIN_NDK_PKG_MAJOR}.${LY_TOOLCHAIN_NDK_PKG_MINOR}.${LY_TOOLCHAIN_NDK_PKG_MINOR}")
+    message(STATUS "Detected NDK Version ${LY_TOOLCHAIN_NDK_PKG_MAJOR}.${LY_TOOLCHAIN_NDK_PKG_MINOR}")
 endif()
 
 list(APPEND CMAKE_TRY_COMPILE_PLATFORM_VARIABLES LY_NDK_DIR)