set arm64 for osx

CMakeLists.txt

@@ -15,6 +15,15 @@ if (USE_PACKAGED_SUBMODULES)
     option(USE_INCLUDED_SSL "Use included libressl" ON)
 else()
     message("USE_PACKAGED_SUBMODULES is OFF")
+    # Set the vcpkg target triplet for macOS arm64, only on Apple platforms
+    if (APPLE)
+        if (NOT DEFINED ENV{VCPKG_TARGET_TRIPLET})
+            set(VCPKG_TARGET_TRIPLET "arm64-osx" CACHE STRING "Target triplet for vcpkg on Apple")
+        endif()
+        message(STATUS "Using VCPKG_TARGET_TRIPLET=${VCPKG_TARGET_TRIPLET} for Apple platform")
+    else()
+        message(STATUS "Apple platform not detected, default triplet will be used")
+    endif()
     if (EXISTS "${CMAKE_SOURCE_DIR}/vcpkg/scripts/buildsystems/vcpkg.cmake")
         message("Using VCPKG Toolchain")
         set(CMAKE_TOOLCHAIN_FILE "${CMAKE_SOURCE_DIR}/vcpkg/scripts/buildsystems/vcpkg.cmake" CACHE STRING "Vcpkg toolchain file")