fix for issue #855 (#856)

Author: eteran

cmake/Modules/DetectArchitecture.cmake

@@ -8,8 +8,8 @@ if((CMAKE_SYSTEM_PROCESSOR MATCHES "i[3456]86") OR (CMAKE_SYSTEM_PROCESSOR MATCH
 		set(TARGET_ARCH_X86 1)
 		set(TARGET_ARCH_NAME "x86")
 	endif()
-elseif((CMAKE_SYSTEM_PROCESSOR MATCHES "armv[0-9]+"))
-	set(TARGET_ARCH_FAMILY_ARM 1)	
+elseif((CMAKE_SYSTEM_PROCESSOR MATCHES "armv[0-9]+") OR (CMAKE_SYSTEM_PROCESSOR MATCHES "aarch64"))
+	set(TARGET_ARCH_FAMILY_ARM 1)
 	if (CMAKE_SIZEOF_VOID_P EQUAL 8)
 		set(TARGET_ARCH_ARM64 1)
 		set(TARGET_ARCH_NAME "arm64")