diff --git a/External/SPEC/SpecCPU2006.cmake b/External/SPEC/SpecCPU2006.cmake
--- a/External/SPEC/SpecCPU2006.cmake
+++ b/External/SPEC/SpecCPU2006.cmake
@@ -35,9 +35,9 @@
   include(TestBigEndian)
   test_big_endian(IS_BIGENDIAN)
   if(IS_BIGENDIAN)
-    list(APPEND CPPFLAGS -DSPEC_CPU_BIGENDIAN)
+    list(APPEND CPPFLAGS -DSPEC_CPU_BIGENDIAN -DSPEC_CPU_BIG_ENDIAN)
   else()
-    list(APPEND CPPFLAGS -DSPEC_CPU_LITTLEENDIAN)
+    list(APPEND CPPFLAGS -DSPEC_CPU_LITTLEENDIAN -DSPEC_CPU_LITTLE_ENDIAN)
   endif()
 
   if(CMAKE_SIZEOF_VOID_P EQUAL 8)