Hi,
it is problem of linking a C Library with C++
You need to use this fix :
+/* linking C functions */
+extern "C"
+{
+#include "../summary.h"
+}
On Wed, May 22, 2013 at 10:05 AM, Richard Turner <[email protected]> wrote:
> On 2013/5/22 13:38, Pascal Quantin wrote:
>
>> Le 22/05/2013 07:30, Anders Broman a écrit :
>>
>>> Richard Turner skrev 2013-05-22 07:19:
>>>
>>>> Hello,
>>>>
>>>> I'm trying to implement the statistics summary window in QtShark, but
>>>> when I use these two functions I keep getting LNK2019 "unresolved
>>>> external symbol" error from my VS2010 compiler:
>>>>
>>>> summary_fill_in(&cfile, &summary);
>>>> summary_fill_in_capture(&**cfile, &global_capture_opts, &summary);
>>>>
>>>> both are located in summary.c
>>>>
>>>> I've tested using the two functions in main.cpp(which properly
>>>> included the headers needed), and I got the same link error.
>>>>
>>>>
>>>> The headers I've included are as follows:
>>>> #include <string.h>
>>>> #include <time.h>
>>>> #include "config.h"
>>>> #include <glib.h>
>>>> #include "qt_ui_utils.h"
>>>> #include <epan/strutil.h>
>>>> #include <wiretap/wtap.h>
>>>> #include "globals.h"
>>>> #include "file.h"
>>>> #include "summary.h"
>>>> #include "version_info.h"
>>>>
>>>> #ifdef HAVE_LIBPCAP
>>>> #include "../capture.h"
>>>> #include "ui/capture_globals.h"
>>>> #include "../capture-pcap-util.h"
>>>> #endif
>>>>
>>>> Regards,
>>>>
>>> Try changing summary.h as follows
>>> WS_DLL_PUBLIC extern void
>>> summary_fill_in(capture_file *cf, summary_tally *st);
>>>
>>> #ifdef HAVE_LIBPCAP
>>> WS_DLL_PUBLIC extern void
>>> summary_fill_in_capture(**capture_file *cf, capture_options
>>> *capture_opts, summary_tally *st);
>>> #endif
>>>
>>> Regards
>>> Anders
>>>
>> The line
>> #include "ws_symbol_export.h"
>> should be added at the beginning of summary.h also
>>
>> Regards,
>> Pascal.
>>
>> I'm sorry, but this won't work on my environment.
>
> I still get the same error :
>
> C:\Turner\Workspace\Wireshark\**ui\build-QtShark-Qt4_8_4-**Release\main.obj:-1:
> error: LNK2019: Unresolved external symbol "__declspec(dllimport) void
> __cdecl summary_fill_in_capture(struct _capture_file *,struct
> capture_options_tag *,struct _summary_tally *)" (__imp_?summary_fill_in_**
> capture@@YAXPAU_capture_file@@**PAUcapture_options_tag@@PAU_**
> summary_tally@@@Z)，referenced in function _main
>
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