--- CMakeLists.txt.orig	2021-01-31 17:45:15.000000000 -0800
+++ CMakeLists.txt	2021-01-31 17:45:51.000000000 -0800
@@ -37,6 +37,10 @@
 
 SET(CMAKE_MODULE_PATH "${PROJECT_SOURCE_DIR}/cmake" "${CMAKE_MODULE_PATH}")
 
+if(DEFINED OVERRIDE_SYSTEM_PROCESSOR)
+set(CMAKE_SYSTEM_PROCESSOR ${OVERRIDE_SYSTEM_PROCESSOR})
+endif()
+
 # System architecture detection
 string(TOLOWER "${CMAKE_SYSTEM_PROCESSOR}" SYSPROC)
 set(X86_ALIASES x86 i386 i686 x86_64 amd64)