Source: Drop support for KWSys Encoding without std::wstring methods

Source/Modules/CMakeBuildUtilities.cmake

diff --git a/Source/Modules/CMakeBuildUtilities.cmake b/Source/Modules/CMakeBuildUtilities.cmake
index a1b0c44..5c21fff 100644
--- a/Source/Modules/CMakeBuildUtilities.cmake
+++ b/Source/Modules/CMakeBuildUtilities.cmake
@@ -41,7 +41,6 @@
   set(KWSYS_CXX_HAS_UTIMES_COMPILED 0)
   set(KWSYS_CXX_STAT_HAS_ST_MTIM_COMPILED 0)
   set(KWSYS_CXX_STAT_HAS_ST_MTIMESPEC_COMPILED 0)
-  set(KWSYS_STL_HAS_WSTRING_COMPILED 1)
   set(KWSYS_SYS_HAS_IFADDRS_H 0)
 endif()
 add_subdirectory(Source/kwsys)

Source/cmArchiveWrite.cxx

diff --git a/Source/cmArchiveWrite.cxx b/Source/cmArchiveWrite.cxx
index 0828dcb..321cddf 100644
--- a/Source/cmArchiveWrite.cxx
+++ b/Source/cmArchiveWrite.cxx
@@ -39,21 +39,13 @@
 static void cm_archive_entry_copy_pathname(struct archive_entry* e,
                                            std::string const& dest)
 {
-#if cmsys_STL_HAS_WSTRING
   archive_entry_copy_pathname_w(e, cmsys::Encoding::ToWide(dest).c_str());
-#else
-  archive_entry_copy_pathname(e, dest.c_str());
-#endif
 }
 
 static void cm_archive_entry_copy_sourcepath(struct archive_entry* e,
                                              std::string const& file)
 {
-#if cmsys_STL_HAS_WSTRING
   archive_entry_copy_sourcepath_w(e, cmsys::Encoding::ToWide(file).c_str());
-#else
-  archive_entry_copy_sourcepath(e, file.c_str());
-#endif
 }
 
 class cmArchiveWrite::Entry

Source/cmSystemTools.cxx

diff --git a/Source/cmSystemTools.cxx b/Source/cmSystemTools.cxx
index 4df9eb1..49f5bd0 100644
--- a/Source/cmSystemTools.cxx
+++ b/Source/cmSystemTools.cxx
@@ -378,22 +378,14 @@
 #if !defined(CMAKE_BOOTSTRAP)
 static std::string cm_archive_entry_pathname(struct archive_entry* entry)
 {
-#  if cmsys_STL_HAS_WSTRING
   return cmsys::Encoding::ToNarrow(archive_entry_pathname_w(entry));
-#  else
-  return archive_entry_pathname(entry);
-#  endif
 }
 
 static int cm_archive_read_open_file(struct archive* a, char const* file,
                                      int block_size)
 {
-#  if cmsys_STL_HAS_WSTRING
   std::wstring wfile = cmsys::Encoding::ToWide(file);
   return archive_read_open_filename_w(a, wfile.c_str(), block_size);
-#  else
-  return archive_read_open_filename(a, file, block_size);
-#  endif
 }
 #endif
 

bootstrap

diff --git a/bootstrap b/bootstrap
index e6b373a..2ec6aac 100755
--- a/bootstrap
+++ b/bootstrap
@@ -847,7 +847,6 @@
               s/@KWSYS_LFS_AVAILABLE@/${KWSYS_LFS_AVAILABLE}/g;
               s/@KWSYS_LFS_REQUESTED@/${KWSYS_LFS_REQUESTED}/g;
               s/@KWSYS_NAME_IS_KWSYS@/${KWSYS_NAME_IS_KWSYS}/g;
-              s/@KWSYS_STL_HAS_WSTRING@/${KWSYS_STL_HAS_WSTRING}/g;
               s/@KWSYS_CXX_HAS_EXT_STDIO_FILEBUF_H@/${KWSYS_CXX_HAS_EXT_STDIO_FILEBUF_H}/g;
              }" "${INFILE}" >> "${OUTFILE}${_tmp}"
     if test -f "${OUTFILE}${_tmp}"; then
@@ -1562,7 +1561,6 @@
 KWSYS_BUILD_SHARED=0
 KWSYS_LFS_AVAILABLE=0
 KWSYS_LFS_REQUESTED=0
-KWSYS_STL_HAS_WSTRING=0
 KWSYS_CXX_HAS_EXT_STDIO_FILEBUF_H=0
 KWSYS_CXX_HAS_SETENV=0
 KWSYS_CXX_HAS_UNSETENV=0
@@ -1598,15 +1596,6 @@
 fi
 
 if cmake_try_run "${cmake_cxx_compiler}" \
-  "${cmake_cxx_flags} ${cmake_ld_flags} -DTEST_KWSYS_STL_HAS_WSTRING" \
-  "${cmake_source_dir}/Source/kwsys/kwsysPlatformTestsCXX.cxx" >> cmake_bootstrap.log 2>&1; then
-  KWSYS_STL_HAS_WSTRING=1
-  echo "${cmake_cxx_compiler} has stl wstring"
-else
-  echo "${cmake_cxx_compiler} does not have stl wstring"
-fi
-
-if cmake_try_run "${cmake_cxx_compiler}" \
   "${cmake_cxx_flags} ${cmake_ld_flags} -DTEST_KWSYS_CXX_HAS_EXT_STDIO_FILEBUF_H" \
   "${cmake_source_dir}/Source/kwsys/kwsysPlatformTestsCXX.cxx" >> cmake_bootstrap.log 2>&1; then
   KWSYS_CXX_HAS_EXT_STDIO_FILEBUF_H=1