Respect target system

Author: ruberith

CMake/Common.cmake

@@ -63,7 +63,7 @@ if (UNIX OR MINGW)
 	if (CI_BUILD)
 		set(CMAKE_CXX_FLAGS_RELEASE "-O3 -DNDEBUG -march=x86-64")
 		set(CMAKE_CXX_FLAGS_RELWITHDEBINFO "-O3 -DNDEBUG -march=x86-64")
-	elseif (APPLE AND CMAKE_HOST_SYSTEM_PROCESSOR STREQUAL "arm64")
+	elseif (APPLE AND CMAKE_SYSTEM_PROCESSOR STREQUAL "arm64")
 		set(CMAKE_CXX_FLAGS_RELEASE "-O3 -DNDEBUG -mcpu=apple-m1")
 		set(CMAKE_CXX_FLAGS_RELWITHDEBINFO "-O3 -DNDEBUG -mcpu=apple-m1")
 	else()