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Hi All,

Recently I began to work with Wireshark, so I have little experience with the "plugin" environment or setup. When I attempted to install the plugin by building Wireshark, I got the following errors. Could someone tell me what I'm doing wrong and/or what I can do to fix it?

Thanks!

Ian

packet-ipa.c
c:\Program Files (x86)\wireshark\epan/reassemble.h(69) : error C2061: syntax error : identifier 'guint32'

c:\Program Files (x86)\wireshark\epan/reassemble.h(70) : error C2061: syntax error : identifier 'offset'

c:\Program Files (x86)\wireshark\epan/reassemble.h(70) : error C2059: syntax error : ';'

[non-relevant errors snipped for brevity]

NMAKE : fatal error U1077: '"C:\Program Files (x86)\Microsoft Visual Studio 9.0\VC\BIN\cl.EXE"' : return code '0x2'

Stop.

NMAKE : fatal error U1077: '"C:\Program Files (x86)\Microsoft Visual Studio 9.0\
VC\BIN\nmake.exe"' : return code '0x2'

Stop.

NMAKE : fatal error U1077: 'if' : return code '0x2'

Stop.

NMAKE : fatal error U1077: '"C:\Program Files (x86)\Microsoft Visual Studio 9.0\
VC\BIN\nmake.exe"' : return code '0x2'

Stop.

NMAKE : fatal error U1077: '"C:\Program Files (x86)\Microsoft Visual Studio 9.0\
VC\BIN\nmake.exe"' : return code '0x2'

Stop.

asked 11 Jun '12, 10:47

Ian's gravatar image

Ian
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accept rate: 0%

edited 11 Jun '12, 14:08

grahamb's gravatar image

grahamb ♦
19.8k330206


From the first error line you seem to be missing the path to glibconfig.h that has the definition of guint32. I suspect that your build environment is't set up correctly. Have you followed all the steps in the Developers Guide for Win32 builds exactly as laid out?

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answered 11 Jun '12, 12:03

grahamb's gravatar image

grahamb ♦
19.8k330206
accept rate: 22%

@grahamb,

Thanks for that note, corrected that and half of the errors disappeared.

(11 Jun '12, 12:12) Ian

Okay, however, ...

guint8 flags = tvb_get_guint8(tvb, offset);

is still coming back as an improper use of the guint8 variable, why would this be? A previous use of guint8...

guint8 packet_type = tvb_get_guint8(tvb,0);

did indeed work, but why wouldn't the former line?

(11 Jun '12, 12:30) Ian

What's the exact error message for the error?

It's always best to ensure you can compile a standard copy of Wireshark before you try to add anything new. Have you managed that?

(11 Jun '12, 13:10) grahamb ♦

I have indeed, and everything works fine, but this is the first plugin from scratch for me.


packet-ipa.c(284) : error C2275: 'guint8' : illegal use of this type as an expression C:\wireshark-win32-libs-1.6\gtk2\lib\glib2.0\include\glibconfig.h(36) : see declaration of 'guint8' packet-ipa.c(284) : error C2146: syntax error : missing ';' before identifier 'flags' packet-ipa.c(284) : error C2065: 'flags' : undeclared identifier

(11 Jun '12, 13:22) Ian

Possibly missing a statement terminator on the previous line?

Can you post a bit of context for the erroring statement?

(11 Jun '12, 13:28) grahamb ♦

Can't see the issue :-( Is flags declared earlier in the function?

When stuck like this I just comment out bits until I find what the compiler is upset about.

(11 Jun '12, 13:54) grahamb ♦

Ya, I did mass chunks of commenting and it compiled for the first time :) I'll keep at it, thanks!

(11 Jun '12, 14:03) Ian

I think Anders nailed it. You can't declare flags there.

(11 Jun '12, 15:56) cmaynard ♦♦

While this is true for .c files (I think this is part of the C standard), the usual VS error for this is: error C2143: syntax error : missing ';' before 'type'.

Using this file:

void main(void) { int dummy = 0; dummy = 4*2; int dummy2 = dummy; }

Gives the output:

c:\users\graham\Documents>cl test.c Microsoft (R) C/C++ Optimizing Compiler Version 16.00.40219.01 for x64 Copyright (C) Microsoft Corporation. All rights reserved.

test.c test.c(5) : error C2143: syntax error : missing ';' before 'type'

The error is the same for VS2005 & VS2010

(12 Jun '12, 02:12) grahamb ♦

if you compile that with gcc -pedantic it tells the reason for the error:

[email protected]:/soft$ gcc -pedantic test.c
test.c:1:6: warning: return type of ‘main’ is not ‘int’ [-Wmain]
test.c: In function ‘main’:
test.c:5:1: warning: ISO C90 forbids mixed declarations and code [-pedantic]

Seems to be the C90 standard. gcc accepts the code and does only warn with -pedantic.

(12 Jun '12, 02:44) Kurt Knochner ♦

And that's why we declare all vars in dissectors at the start of the function, for portability. From the Developers Guide (1.1.1 Portability):

Don't declare variables in the middle of executable code; not all C compilers support that. Variables should be declared outside a function, or at the beginning of a function or compound statement.

Still not sure why the OP is getting a different error though.

(12 Jun '12, 03:08) grahamb ♦

Still not sure why the OP is getting a different error though.

hard to say without the code. I assume your previous statement ("Possibly missing a statement terminator") nails it down, as uncommenting large parts of the code "fixes" the problem.

(12 Jun '12, 05:13) Kurt Knochner ♦

Got it to work, thanks guys :)

(12 Jun '12, 07:16) Ian

what was the problem?

(12 Jun '12, 07:29) Kurt Knochner ♦

And that's why we declare all vars in dissectors at the start of the function, for portability. From the Developers Guide (1.1.1 Portability):

Don't declare variables in the middle of executable code; not all C compilers support that. Variables should be declared outside a function, or at the beginning of a function or compound statement.


What Graham said basically summed it up: VS didn't like me putting declarations within functions themselves, so I declared all vars that were giving me errors at the beginning :)

(12 Jun '12, 07:35) Ian
showing 5 of 15 show 10 more comments

There is a syntax error in your code either before or with the include statement for

#include <epan/reassemble.h>

Please post 10-20 lines of your code in front of the include statement.

Regards
Kurt

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answered 11 Jun '12, 11:34

Kurt%20Knochner's gravatar image

Kurt Knochner ♦
24.8k1039237
accept rate: 15%

Hi Kurt,

Thanks for replying so quickly, here's the lines.

ifdef HAVE_CONFIG_H

include "config.h"

endif

/ Include only as needed /

include <stdio.h>

include <gmodule.h>

include <stdlib.h>

include <string.h>

include <glib.h>

include <epan packet.h="">

include <epan prefs.h="">

include <epan emem.h="">

include <epan reassemble.h="">

(11 Jun '12, 12:09) Ian

the last include statements look pretty strange, but I guess that's just a copy-paste error with the Q&A site, right?

(11 Jun '12, 12:51) Kurt Knochner ♦

Ya, it should be:

include <epan.reassemble.h> with the # in front

(11 Jun '12, 13:23) Ian
1

Windows does not like declarations in the middle of the code, is that what you are doing?

(11 Jun '12, 13:45) Anders ♦

These are declarations at the top of the plugin I'm trying to write, and I was showing Kurt that the include statements should be correct.

#ifdef HAVE_CONFIG_H
# include "config.h"
#endif

/* Include only as needed */
#include <stdio.h>
#include <gmodule.h>
#include <stdlib.h>
#include <string.h>

#include <glib.h>

#include <epan/packet.h>
#include <epan/prefs.h>
#include <epan/emem.h>
#include <epan/reassemble.h>
(11 Jun '12, 13:54) Ian

Loose the gmodule.h include.

(12 Jun '12, 05:45) Jaap ♦
showing 5 of 6 show 1 more comments
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question asked: 11 Jun '12, 10:47

question was seen: 5,495 times

last updated: 12 Jun '12, 07:35

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