Update CMake to handle ARM64EC with VS Generator

CMakeLists.txt

@@ -18,7 +18,7 @@ set(CMAKE_ARCHIVE_OUTPUT_DIRECTORY "${CMAKE_BINARY_DIR}/lib")
 set(CMAKE_LIBRARY_OUTPUT_DIRECTORY "${CMAKE_BINARY_DIR}/lib")
 set(CMAKE_RUNTIME_OUTPUT_DIRECTORY "${CMAKE_BINARY_DIR}/bin")
 
-if (DEFINED VCPKG_TARGET_ARCHITECTURE)
+if(DEFINED VCPKG_TARGET_ARCHITECTURE)
     set(DIRECTX_ARCH ${VCPKG_TARGET_ARCHITECTURE})
 elseif(CMAKE_GENERATOR_PLATFORM MATCHES "^[Ww][Ii][Nn]32$")
     set(DIRECTX_ARCH x86)
@@ -28,6 +28,8 @@ elseif(CMAKE_GENERATOR_PLATFORM MATCHES "^[Aa][Rr][Mm]$")
     set(DIRECTX_ARCH arm)
 elseif(CMAKE_GENERATOR_PLATFORM MATCHES "^[Aa][Rr][Mm]64$")
     set(DIRECTX_ARCH arm64)
+elseif(CMAKE_GENERATOR_PLATFORM MATCHES "^[Aa][Rr][Mm]64EC$")
+    set(DIRECTX_ARCH arm64ec)
 elseif(CMAKE_VS_PLATFORM_NAME_DEFAULT MATCHES "^[Ww][Ii][Nn]32$")
     set(DIRECTX_ARCH x86)
 elseif(CMAKE_VS_PLATFORM_NAME_DEFAULT MATCHES "^[Xx]64$")
@@ -36,6 +38,8 @@ elseif(CMAKE_VS_PLATFORM_NAME_DEFAULT MATCHES "^[Aa][Rr][Mm]$")
     set(DIRECTX_ARCH arm)
 elseif(CMAKE_VS_PLATFORM_NAME_DEFAULT MATCHES "^[Aa][Rr][Mm]64$")
     set(DIRECTX_ARCH arm64)
+elseif(CMAKE_VS_PLATFORM_NAME_DEFAULT MATCHES "^[Aa][Rr][Mm]64EC$")
+    set(DIRECTX_ARCH arm64ec)
 endif()
 
 add_executable(${PROJECT_NAME} WIN32