diff --git a/Source/kwsys/CMakeLists.txt b/Source/kwsys/CMakeLists.txt
index ce7f5635d..b859e79d9 100644
--- a/Source/kwsys/CMakeLists.txt
+++ b/Source/kwsys/CMakeLists.txt
@@ -124,7 +124,6 @@ IF(KWSYS_STANDALONE OR CMake_SOURCE_DIR)
   SET(KWSYS_USE_FStream 1)
   SET(KWSYS_USE_String 1)
   SET(KWSYS_USE_SystemInformation 1)
-  SET(KWSYS_USE_CPU 1)
 ENDIF()
 
 # Enforce component dependencies.
@@ -425,13 +424,6 @@ IF(KWSYS_USE_FundamentalType)
     ENDIF()
   ENDFOREACH()
 
-  IF(KWSYS_USE___INT64)
-    KWSYS_PLATFORM_CXX_TEST(KWSYS_CAN_CONVERT_UI64_TO_DOUBLE
-      "Checking whether unsigned __int64 can convert to double" DIRECT)
-  ELSE()
-    SET(KWSYS_CAN_CONVERT_UI64_TO_DOUBLE 1)
-  ENDIF()
-
   # Check signedness of "char" type.
   KWSYS_PLATFORM_CXX_TEST_RUN(KWSYS_CHAR_IS_SIGNED
     "Checking whether char is signed" DIRECT)
@@ -749,7 +741,7 @@ ENDFOREACH()
 
 # Add selected C components.
 FOREACH(c
-    Process Base64 Encoding FundamentalType MD5 Terminal System String CPU
+    Process Base64 Encoding FundamentalType MD5 Terminal System String
     )
   IF(KWSYS_USE_${c})
     # Use the corresponding header file.
diff --git a/Source/kwsys/CPU.h.in b/Source/kwsys/CPU.h.in
deleted file mode 100644
index 66ffbb1fd..000000000
--- a/Source/kwsys/CPU.h.in
+++ /dev/null
@@ -1,141 +0,0 @@
-/*============================================================================
-  KWSys - Kitware System Library
-  Copyright 2000-2009 Kitware, Inc., Insight Software Consortium
-
-  Distributed under the OSI-approved BSD License (the "License");
-  see accompanying file Copyright.txt for details.
-
-  This software is distributed WITHOUT ANY WARRANTY; without even the
-  implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
-  See the License for more information.
-============================================================================*/
-#ifndef @KWSYS_NAMESPACE@_CPU_h
-#define @KWSYS_NAMESPACE@_CPU_h
-
-#include <@KWSYS_NAMESPACE@/Configure.h>
-
-/* Identify possible endian cases.  The macro
-   @KWSYS_NAMESPACE@_CPU_ENDIAN_ID will be defined to one of these, or
-   0 if unknown.  */
-#define @KWSYS_NAMESPACE@_CPU_ENDIAN_ID_BIG    4321
-#define @KWSYS_NAMESPACE@_CPU_ENDIAN_ID_LITTLE 1234
-
-/* Apple always defines one of these.  */
-#if defined(__LITTLE_ENDIAN__)
-# define @KWSYS_NAMESPACE@_CPU_ENDIAN_ID @KWSYS_NAMESPACE@_CPU_ENDIAN_ID_LITTLE
-#elif defined(__BIG_ENDIAN__)
-# define @KWSYS_NAMESPACE@_CPU_ENDIAN_ID @KWSYS_NAMESPACE@_CPU_ENDIAN_ID_BIG
-
-/* Alpha */
-#elif defined(__alpha) || defined(__alpha__) || defined(_M_ALPHA)
-# define @KWSYS_NAMESPACE@_CPU_ENDIAN_ID @KWSYS_NAMESPACE@_CPU_ENDIAN_ID_LITTLE
-
-/* Arm */
-#elif defined(__arm__)
-# if !defined(__ARMEB__)
-#  define @KWSYS_NAMESPACE@_CPU_ENDIAN_ID @KWSYS_NAMESPACE@_CPU_ENDIAN_ID_LITTLE
-# else
-#  define @KWSYS_NAMESPACE@_CPU_ENDIAN_ID @KWSYS_NAMESPACE@_CPU_ENDIAN_ID_BIG
-# endif
-
-/* Intel x86 */
-#elif defined(__i386) || defined(__i386__) || defined(_M_IX86)
-# define @KWSYS_NAMESPACE@_CPU_ENDIAN_ID @KWSYS_NAMESPACE@_CPU_ENDIAN_ID_LITTLE
-#elif defined(_X86_) || defined(__THW_INTEL__) || defined(__I86__)
-# define @KWSYS_NAMESPACE@_CPU_ENDIAN_ID @KWSYS_NAMESPACE@_CPU_ENDIAN_ID_LITTLE
-#elif defined(__MWERKS__) && defined(__INTEL__)
-# define @KWSYS_NAMESPACE@_CPU_ENDIAN_ID @KWSYS_NAMESPACE@_CPU_ENDIAN_ID_LITTLE
-
-/* Intel x86-64 */
-#elif defined(__x86_64) || defined(__x86_64__) || defined(_M_X64)
-# define @KWSYS_NAMESPACE@_CPU_ENDIAN_ID @KWSYS_NAMESPACE@_CPU_ENDIAN_ID_LITTLE
-#elif defined(__amd64) || defined(__amd64__)
-# define @KWSYS_NAMESPACE@_CPU_ENDIAN_ID @KWSYS_NAMESPACE@_CPU_ENDIAN_ID_LITTLE
-
-/* Intel Architecture-64 (Itanium) */
-#elif defined(__ia64) || defined(__ia64__)
-# define @KWSYS_NAMESPACE@_CPU_ENDIAN_ID @KWSYS_NAMESPACE@_CPU_ENDIAN_ID_LITTLE
-#elif defined(_IA64) || defined(__IA64__) || defined(_M_IA64)
-# define @KWSYS_NAMESPACE@_CPU_ENDIAN_ID @KWSYS_NAMESPACE@_CPU_ENDIAN_ID_LITTLE
-
-/* PowerPC */
-#elif defined(__powerpc) || defined(__powerpc__)
-# define @KWSYS_NAMESPACE@_CPU_ENDIAN_ID @KWSYS_NAMESPACE@_CPU_ENDIAN_ID_BIG
-#elif defined(__ppc) || defined(__ppc__) || defined(__POWERPC__)
-# define @KWSYS_NAMESPACE@_CPU_ENDIAN_ID @KWSYS_NAMESPACE@_CPU_ENDIAN_ID_BIG
-
-/* SPARC */
-#elif defined(__sparc) || defined(__sparc__)
-# define @KWSYS_NAMESPACE@_CPU_ENDIAN_ID @KWSYS_NAMESPACE@_CPU_ENDIAN_ID_BIG
-
-/* HP/PA RISC */
-#elif defined(__hppa) || defined(__hppa__)
-# define @KWSYS_NAMESPACE@_CPU_ENDIAN_ID @KWSYS_NAMESPACE@_CPU_ENDIAN_ID_BIG
-
-/* Motorola 68k */
-#elif defined(__m68k__) || defined(M68000)
-# define @KWSYS_NAMESPACE@_CPU_ENDIAN_ID @KWSYS_NAMESPACE@_CPU_ENDIAN_ID_BIG
-
-/* MIPSel (MIPS little endian) */
-#elif defined(__MIPSEL__) || defined(__MIPSEL) || defined(_MIPSEL)
-# define @KWSYS_NAMESPACE@_CPU_ENDIAN_ID @KWSYS_NAMESPACE@_CPU_ENDIAN_ID_LITTLE
-
-/* MIPSeb (MIPS big endian) */
-#elif defined(__MIPSEB__) || defined(__MIPSEB) || defined(_MIPSEB)
-# define @KWSYS_NAMESPACE@_CPU_ENDIAN_ID @KWSYS_NAMESPACE@_CPU_ENDIAN_ID_BIG
-
-/* MIPS (fallback, big endian) */
-#elif defined(__mips) || defined(__mips__) || defined(__MIPS__)
-# define @KWSYS_NAMESPACE@_CPU_ENDIAN_ID @KWSYS_NAMESPACE@_CPU_ENDIAN_ID_BIG
-
-/* NIOS2 */
-#elif defined(__NIOS2__) || defined(__NIOS2) || defined(__nios2__)
-# define @KWSYS_NAMESPACE@_CPU_ENDIAN_ID @KWSYS_NAMESPACE@_CPU_ENDIAN_ID_LITTLE
-
-/* OpenRISC 1000 */
-#elif defined(__or1k__)
-# define @KWSYS_NAMESPACE@_CPU_ENDIAN_ID @KWSYS_NAMESPACE@_CPU_ENDIAN_ID_BIG
-
-/* RS/6000 */
-#elif defined(__THW_RS600) || defined(_IBMR2) || defined(_POWER)
-# define @KWSYS_NAMESPACE@_CPU_ENDIAN_ID @KWSYS_NAMESPACE@_CPU_ENDIAN_ID_BIG
-#elif defined(_ARCH_PWR) || defined(_ARCH_PWR2)
-# define @KWSYS_NAMESPACE@_CPU_ENDIAN_ID @KWSYS_NAMESPACE@_CPU_ENDIAN_ID_BIG
-
-/* System/370 */
-#elif defined(__370__) || defined(__THW_370__)
-# define @KWSYS_NAMESPACE@_CPU_ENDIAN_ID @KWSYS_NAMESPACE@_CPU_ENDIAN_ID_BIG
-
-/* System/390 */
-#elif defined(__s390__) || defined(__s390x__)
-# define @KWSYS_NAMESPACE@_CPU_ENDIAN_ID @KWSYS_NAMESPACE@_CPU_ENDIAN_ID_BIG
-
-/* z/Architecture */
-#elif defined(__SYSC_ZARCH__)
-# define @KWSYS_NAMESPACE@_CPU_ENDIAN_ID @KWSYS_NAMESPACE@_CPU_ENDIAN_ID_BIG
-
-/* Aarch64 */
-#elif defined(__aarch64__)
-# if !defined(__AARCH64EB__)
-#  define @KWSYS_NAMESPACE@_CPU_ENDIAN_ID @KWSYS_NAMESPACE@_CPU_ENDIAN_ID_LITTLE
-# else
-#  define @KWSYS_NAMESPACE@_CPU_ENDIAN_ID @KWSYS_NAMESPACE@_CPU_ENDIAN_ID_BIG
-# endif
-
-/* Unknown CPU */
-#else
-# define @KWSYS_NAMESPACE@_CPU_ENDIAN_ID 0
-# if !defined(@KWSYS_NAMESPACE@_CPU_UNKNOWN_OKAY)
-#  error "The target CPU architecture is not known."
-# endif
-#endif
-
-/* If building a C or C++ file in kwsys itself, give the source file
-   access to the macros without a configured namespace.  */
-#if defined(KWSYS_NAMESPACE)
-# define KWSYS_CPU_ENDIAN_ID        @KWSYS_NAMESPACE@_CPU_ENDIAN_ID
-# define KWSYS_CPU_ENDIAN_ID_BIG    @KWSYS_NAMESPACE@_CPU_ENDIAN_ID_BIG
-# define KWSYS_CPU_ENDIAN_ID_LITTLE @KWSYS_NAMESPACE@_CPU_ENDIAN_ID_LITTLE
-#endif
-
-#endif
diff --git a/Source/kwsys/FundamentalType.h.in b/Source/kwsys/FundamentalType.h.in
index ff200633a..e702a7a32 100644
--- a/Source/kwsys/FundamentalType.h.in
+++ b/Source/kwsys/FundamentalType.h.in
@@ -90,18 +90,12 @@ typedef unsigned long kwsysFundamentalType_UInt32;
 #if @KWSYS_NAMESPACE@_SIZEOF_LONG == 8
 typedef signed long   kwsysFundamentalType_Int64;
 typedef unsigned long kwsysFundamentalType_UInt64;
-/* Whether UInt64 can be converted to double.  */
-# define @KWSYS_NAMESPACE@_CAN_CONVERT_UI64_TO_DOUBLE 1
 #elif @KWSYS_NAMESPACE@_USE_LONG_LONG && @KWSYS_NAMESPACE@_SIZEOF_LONG_LONG == 8
 typedef signed long long   kwsysFundamentalType_Int64;
 typedef unsigned long long kwsysFundamentalType_UInt64;
-/* Whether UInt64 can be converted to double.  */
-# define @KWSYS_NAMESPACE@_CAN_CONVERT_UI64_TO_DOUBLE 1
 #elif @KWSYS_NAMESPACE@_USE___INT64 && @KWSYS_NAMESPACE@_SIZEOF___INT64 == 8
 typedef signed __int64   kwsysFundamentalType_Int64;
 typedef unsigned __int64 kwsysFundamentalType_UInt64;
-/* Whether UInt64 can be converted to double.  */
-# define @KWSYS_NAMESPACE@_CAN_CONVERT_UI64_TO_DOUBLE @KWSYS_CAN_CONVERT_UI64_TO_DOUBLE@
 #else
 # error "No native data type can represent a 64-bit integer."
 #endif
@@ -140,7 +134,6 @@ typedef unsigned __int64 kwsysFundamentalType_UInt64;
 # define KWSYS_USE_LONG_LONG @KWSYS_NAMESPACE@_USE_LONG_LONG
 # define KWSYS_USE___INT64 @KWSYS_NAMESPACE@_USE___INT64
 # define KWSYS_CHAR_IS_SIGNED @KWSYS_NAMESPACE@_CHAR_IS_SIGNED
-# define KWSYS_CAN_CONVERT_UI64_TO_DOUBLE @KWSYS_NAMESPACE@_CAN_CONVERT_UI64_TO_DOUBLE
 #endif
 
 #endif
diff --git a/Source/kwsys/kwsysPlatformTestsCXX.cxx b/Source/kwsys/kwsysPlatformTestsCXX.cxx
index 962693705..aaa33b8c2 100644
--- a/Source/kwsys/kwsysPlatformTestsCXX.cxx
+++ b/Source/kwsys/kwsysPlatformTestsCXX.cxx
@@ -78,21 +78,6 @@ int main()
 }
 #endif
 
-#ifdef TEST_KWSYS_CAN_CONVERT_UI64_TO_DOUBLE
-void function(double& l, unsigned __int64 const& r)
-{
-  l = static_cast<double>(r);
-}
-
-int main()
-{
-  double tTo = 0.0;
-  unsigned __int64 tFrom = 0;
-  function(tTo, tFrom);
-  return 0;
-}
-#endif
-
 #ifdef TEST_KWSYS_IOS_HAS_ISTREAM_LONG_LONG
 # include <iostream>
 int test_istream(std::istream& is, long long& x)