build: set the system host processor on Windows

Author: aminya

CMakeLists.txt

@@ -8,12 +8,15 @@ endif()
 if(WIN32)
   if("${PLATFORM}" STREQUAL "x86")
     set(CMAKE_SYSTEM_PROCESSOR "x86")
-    set(CMAKE_TOOLCHAIN_FILE "Z")
+    set(CMAKE_SYSTEM_HOST_PROCESSOR "x86")
   elseif(NOT "$ENV{PROCESSOR_ARCHITEW6432}" STREQUAL "")
     set(CMAKE_SYSTEM_PROCESSOR "$ENV{PROCESSOR_ARCHITEW6432}")
+    set(CMAKE_SYSTEM_HOST_PROCESSOR "$ENV{PROCESSOR_ARCHITEW6432}")
   else()
     set(CMAKE_SYSTEM_PROCESSOR "$ENV{PROCESSOR_ARCHITECTURE}")
+    set(CMAKE_SYSTEM_HOST_PROCESSOR "$ENV{PROCESSOR_ARCHITECTURE}")
   endif()
+  set(CMAKE_TOOLCHAIN_FILE ";")
 endif()
 
 # Add project_options from https://github.com/aminya/project_options Change the