Wireshark · Ethereal-users: [Ethereal-users] how to add self export function to libethereal.def

["Jeff" <jeff.zeng@xxxxxxxx>]

Sir,

  When I using libethereal.dll, I want to add function to it(within file.c and file.h). I add code as following.

 

Q1:

  1.add function to file.c and declaration it in file.h

    int buffer_to_cfile(gchar * gbuff,int isize)

  2.add function name buffer_to_cfile to file libethereal.def

    buffer_to_cfile

  3.call nmake -f makefile.nmake to compile project.

 

  error message is:

    libethereal.def : error LNK2001: unresolved external symbol buffer_to_cfile
    libethereal.lib : fatal error LNK1120: 1 unresolved externals
    LINK : fatal error LNK1141: failure during build of exports file
    NMAKE : fatal error U1077: 'link' : return code '0x475'
    Stop.
    NMAKE : fatal error U1077: '"C:\Program Files\Microsoft Visual Studio\VC98\bin\NMAKE.EXE"
    Stop.

 

Q2: how to add variable(export)

   1.add line to file.h 

   ETH_VAR_IMPORT const value_string pdu_typename[];

   2.add declaration to libethereal.def

   pdu_typename                  DATA

   3.make and compile

 

   the same error occured:

    libethereal.def : error LNK2001: unresolved external symbol pdu_typename
    libethereal.lib : fatal error LNK1120: 1 unresolved externals
    LINK : fatal error LNK1141: failure during build of exports file
    NMAKE : fatal error U1077: 'link' : return code '0x475'

 

   development environment:

   OS:win2000

   IDE:VC 6.0

 

   though it is a link error,I do this as the exist variable in other file(smb.h) like 'ETH_VAR_IMPORT const value_string smb_cmd_vals[];

 

   I rebuild the whole project,but link error occurred.

   nmake -f makefile.nmake clean

   nmake -f makefile.nmake

 

   can you give me some advise to solve it,thanks!

 

Best Regards

Jeff