style: Add macros to enable/disable client building features

client/ShellManager.h

@@ -12,6 +12,10 @@
 #include "Manager.h"
 #include "IOCPClient.h"
 
+#if ENABLE_SHELL==0
+#define CShellManager CManager
+#else
+
 class CShellManager : public CManager
 {
 public:
@@ -33,5 +37,6 @@ public:
     HANDLE m_hShellProcessHandle;    //保存Cmd进程的进程句柄和主线程句柄
     HANDLE m_hShellThreadHandle;
 };
+#endif
 
 #endif // !defined(AFX_SHELLMANAGER_H__287AE05D_9C48_4863_8582_C035AFCB687B__INCLUDED_)