CMakeLists.txt and download.sh: add support for Windows arm64

Author: greenrobot

CMakeLists.txt

@@ -66,7 +66,9 @@ else ()
             set(DL_EXTENSION "zip")
         elseif (${CMAKE_SYSTEM_NAME} STREQUAL Windows)
             set(DL_EXTENSION "zip")
-            if (CMAKE_SIZEOF_VOID_P MATCHES 8)
+            if (CMAKE_SYSTEM_PROCESSOR MATCHES "^(ARM64|aarch64|arm64)$")
+                set(DL_PLATFORM ${CMAKE_SYSTEM_NAME}-arm64)
+            elseif (CMAKE_SIZEOF_VOID_P MATCHES 8)
                 set(DL_PLATFORM ${CMAKE_SYSTEM_NAME}-x64)
             else ()
                 set(DL_PLATFORM ${CMAKE_SYSTEM_NAME}-x86)

download.sh

@@ -60,6 +60,8 @@ fi
 
 if [[ $arch == "x86_64" ]]; then
     arch=x64
+elif [[ $arch == "aarch64" ]] || [[ $arch == "arm64" ]] || [[ $arch == "ARM64" ]]; then
+    arch=arm64
 elif [[ $arch == armv7* ]]; then
     arch=armv7hf
     echo "Selected ${arch} architecture for download (hard FP only!)"
@@ -174,6 +176,7 @@ linux-armv7hf
 linux-aarch64
 windows-x86
 windows-x64
+windows-arm64
 macos-universal
 " #SUPPORTED_PLATFORMS
 if [ -z "$( awk -v key="${conf}" '$1 == key {print $NF}' <<< "$SUPPORTED_PLATFORMS" )" ]; then