diff --git a/CMakeLists.txt b/CMakeLists.txt
index 8782fbf..951d5ee 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -35,7 +35,9 @@ if (CMAKE_CXX_LINK_PIE_SUPPORTED)
 elseif(USER_DEFINED_PIE AND CMAKE_POSITION_INDEPENDENT_CODE)
     message(NOTICE "-- Could NOT manually enable Position-Independent Code (PIC) because it is not supported by the current toolchain")
 endif()
-if (CMAKE_SYSTEM_PROCESSOR STREQUAL "")
+if (DEFINED CXX_TARGET)
+    set(CMAKE_SYSTEM_PROCESSOR "${CXX_TARGET}")
+elseif(CMAKE_SYSTEM_PROCESSOR STREQUAL "")
     set(CMAKE_SYSTEM_PROCESSOR "${CMAKE_HOST_SYSTEM_PROCESSOR}")
 endif()
 set(CMAKE_CXX_FLAGS "-Wall")