--- tools/flang2/CMakeLists.txt.orig	2018-09-04 22:24:01 UTC
+++ tools/flang2/CMakeLists.txt
@@ -33,8 +33,8 @@ set(FLANG2_INCLUDE_DIR    ${CMAKE_CURRENT_BINARY_DIR}/
 
 include_directories(${FLANG2_INCLUDE_DIR})
 
-if( ${TARGET_OS} STREQUAL "Linux" )
-  if( ${TARGET_ARCHITECTURE} STREQUAL "x86_64" )
+if( ${TARGET_OS} STREQUAL "Linux|FreeBSD" )
+  if( ${TARGET_ARCHITECTURE} STREQUAL "x86_64|amd64" )
     set(X86_64 ON)
     set(LINUX86 ON)
   endif()