diff --git a/cmake/GetTriplet.cmake b/cmake/GetTriplet.cmake
index 5d152c5..7bb251d 100644
--- a/cmake/GetTriplet.cmake
+++ b/cmake/GetTriplet.cmake
@@ -1,10 +1,11 @@
 function(get_host_triplet triplet)
-    set(host_arch ${CMAKE_SYSTEM_PROCESSOR})
+    string(TOLOWER "${CMAKE_SYSTEM_PROCESSOR}" host_arch)
     if(host_arch STREQUAL "x86")
         set(host_arch "i686")
-    endif()
-    if(host_arch STREQUAL "amd64")
+    elseif(host_arch STREQUAL "amd64")
         set(host_arch "x86_64")
+    elseif(host_arch STREQUAL "arm64")
+        set(host_arch "aarch64")
     endif()
 
     if(${CMAKE_SYSTEM_NAME} STREQUAL "Linux")
@@ -28,12 +29,13 @@ function(get_host_triplet triplet)
 endfunction()
 
 function(get_build_triplet triplet)
-    set(host_arch ${CMAKE_HOST_SYSTEM_PROCESSOR})
+    string(TOLOWER "${CMAKE_HOST_SYSTEM_PROCESSOR}" host_arch)
     if(host_arch STREQUAL "x86")
         set(host_arch "i686")
-    endif()
-    if(host_arch STREQUAL "amd64")
+    elseif(host_arch STREQUAL "amd64")
         set(host_arch "x86_64")
+    elseif(host_arch STREQUAL "arm64")
+        set(host_arch "aarch64")
     endif()
 
     if(${CMAKE_HOST_SYSTEM_NAME} STREQUAL "Linux")