Remove dependency on std::filesystem and fix a compilation error.

source/frontends/ncurses/CMakeLists.txt

@@ -27,7 +27,6 @@ target_compile_options(applen PRIVATE
   ${NCURSESW_CFLAGS_OTHER}
   ${LIBEVDEV_CFLAGS_OTHER}
   )
-target_compile_features(applen PUBLIC cxx_std_17)
 
 target_link_libraries(applen PRIVATE
   ${NCURSESW_LIBRARIES}
@@ -36,11 +35,5 @@ target_link_libraries(applen PRIVATE
   appleii
   )
 
-if (CMAKE_CXX_COMPILER_VERSION VERSION_LESS 9.0)
-  target_link_libraries(applen PRIVATE
-    stdc++fs
-    )
-endif()
-
 add_custom_target(copy-resources ALL
     COMMAND cmake -E copy_directory ${CMAKE_SOURCE_DIR}/resource ${CMAKE_BINARY_DIR}/resource)

source/frontends/ncurses/configuration.cpp

@@ -1,9 +1,9 @@
 #include "frontends/ncurses/configuration.h"
 
 #include "Log.h"
+#include "linux/windows/files.h"
 
 #include <boost/property_tree/ini_parser.hpp>
-#include <filesystem>
 
 class Configuration
 {
@@ -31,7 +31,7 @@ std::shared_ptr<Configuration> Configuration::instance;
 
 Configuration::Configuration(const std::string & filename) : myFilename(filename)
 {
-  if (std::filesystem::exists(filename))
+  if (GetFileAttributes(myFilename.c_str()) != INVALID_FILE_ATTRIBUTES)
   {
     boost::property_tree::ini_parser::read_ini(myFilename, myINI);
   }

source/linux/duplicates/Speaker.cpp

@@ -0,0 +1,16 @@
+#include "StdAfx.h"
+
+#include "YamlHelper.h"
+#include "Common.h"
+
+void SpkrLoadSnapshot(YamlLoadHelper&)
+{
+}
+
+void SpkrSaveSnapshot(YamlSaveHelper&)
+{
+}
+
+void SpkrUpdate_Timer()
+{
+}

source/linux/windows/files.cpp

@@ -113,10 +113,8 @@ HANDLE CreateFile(LPCTSTR               lpFileName,
 
 DWORD GetFileAttributes(const char * filename)
 {
-  const int exists = access(filename, F_OK);
-  if (exists)
-    return INVALID_FILE_ATTRIBUTES;
-
+  // minimum is R_OK
+  // no point checking F_OK as it is useless
   const int read = access(filename, R_OK);
   if (read)
     return INVALID_FILE_ATTRIBUTES;