E2040 Declaration terminated incorrectly

[bcc32 Error] System.ZLib.hpp(310): E2040 Declaration terminated incorrectly
  Full parser context
    DllUnit.cpp(9): #include frm tunit1.h
    ttunit1.h(58): #include d:program files (x86)embarcaderostudio18.0includewindowsvclVcl.WinXCtrls.hpp
    Vcl.WinXCtrls.hpp(25): #include d:program files (x86)embarcaderostudio18.0includewindowsvclVcl.Imaging.pngimage.hpp
    Vcl.Imaging.pngimage.hpp(21): #include d:program files (x86)embarcaderostudio18.0includewindows tlSystem.ZLib.hpp
    System.ZLib.hpp(23): namespace System
    System.ZLib.hpp(25): namespace Zlib

注释这一行System.ZLib.hpp(310)

//extern DELPHI_PACKAGE char *ZLIB_VERSION;

因为vcl界面放了TSearchBox控件引起的