added cross-platform

Planner/Planner.cpp

@@ -1,3 +1,10 @@
+#define _CRT_SECURE_NO_WARNINGS
+using namespace std;
+
+#if __cplusplus >= 201703L
+#include <filesystem>
+#endif
+
 #include "CompilationSupervisor.h"    
 #include "RunSupervisor.h"    
 #include "Global.h"   
@@ -10,8 +17,14 @@ int main(int argc, char ** argv)
 	//--   
 	freeKernels = maxKernels;   
 	busyKernels= 0;	   
-	//--   
-	chdir(packageWorkspace.getCharArray());   
+	//--
+
+#if __cplusplus >= 201703L
+	std::filesystem::current_path(packageWorkspace.getCharArray());
+#else
+	chdir(packageWorkspace.getCharArray());
+#endif
+
 	userWorkspace.println();   
 	packageWorkspace.println();   
 	printf("%d\n", maxKernels);