C/C++ undefinded symbol problem

[Mount Everist]

Hey,

I'm just wondering if anyone ever ran into this error while changing someone
elses code:

error while loading shared libraries: libfame.so.1: undefined symbol:
FAME_DECODER_MP EG

To put this in context, I have the source code for an mpeg4 encoder. I have
been trying to add functionality for a new profile. this has made it necessary
to copy a lot of code before changing it. Before getting this error I copied
fame_decoder_mp eg.c to fame_decoder_co re.c and updated everything so it was
appears in the exact same way as the original class (the c file is really a
c++ class, created using structs).

Anyway, the error is being thrown at the following line, where my core profile
is being initialised:

FAME_PROFILE_MP EG4_CORE(profil e)->FAME_OVERLOADE D(init)(profile ,context,params ,buffer,size);

FAME_OVERLOADED is defined in fame.h:

/* object management */
#define FAME_EXTENDS(t) t super
#define FAME_NEW(t) t ## _constructor((t *) malloc(sizeof(t )))
#define FAME_CONSTRUCTO R(t) t * t ## _constructor(t *this)
#define FAME_DELETE(x) free(x)
#define FAME_OVERLOADED (x) super_ ## x

I don't really understand the above code though (a pointer(sry) to a tutorial
would
be great!).

Any help is greatly apreciated,
Cheers,
Brendan
--
"Anyone who abandons what is done for what aught to be done
learns his ruin rather than his preservation"

http://www.redbrick.dcu.ie/~keno/guestbook.jsp

[Jonathan Mcdougall]

Re: C/C++ undefinded symbol problem

Mount Everist wrote:

With the kind of code you provide, I can only make a wild guess.
[color=blue]
> I'm just wondering if anyone ever ran into this error while changing someone
> elses code:
>
> error while loading shared libraries: libfame.so.1: undefined symbol:
> FAME_DECODER_MP EG[/color]

What's FAME_DECODER_MP EG ?
<snip>
[color=blue]
> Anyway, the error is being thrown at the following line, where my core profile
> is being initialised:
>
> FAME_PROFILE_MP EG4_CORE(profil e)->FAME_OVERLOADE D(init)(profile ,context,params ,buffer,size);[/color]

What's FAME_PROFILE_MP EG4_CORE ?
[color=blue]
> FAME_OVERLOADED is defined in fame.h:
>
> /* object management */
> #define FAME_EXTENDS(t) t super
> #define FAME_NEW(t) t ## _constructor((t *) malloc(sizeof(t )))
> #define FAME_CONSTRUCTO R(t) t * t ## _constructor(t *this)
> #define FAME_DELETE(x) free(x)
> #define FAME_OVERLOADED (x) super_ ## x[/color]

Provide more code and we'll be able to help you.


Jonathan

[Mount Everist]

Re: C/C++ undefinded symbol problem

Actually, I was hoping for more of a pointer to what could be causeing that
error in an app. I don't expect you to know anything about the code I'm using.

Anyway, I fixed the problem - it turned out I was using the wrong object name
(FAME_DECODER_M PEG insead of FAME_DECODER_CO RE). Sounds simple, but I'm
dealing with a lot of code here.

Thanks for the follow up though. now I'm gonna try and find a way to stop my
email appearing in the cache-post-path!

Cheers,
Keno


During visiting hours Jonathan Mcdougall said:[color=blue]
> Mount Everist wrote:
>
> With the kind of code you provide, I can only make a wild guess.
>[color=green]
>> I'm just wondering if anyone ever ran into this error while changing someone
>> elses code:
>>
>> error while loading shared libraries: libfame.so.1: undefined symbol:
>> FAME_DECODER_MP EG[/color]
>
> What's FAME_DECODER_MP EG ?
><snip>
>[color=green]
>> Anyway, the error is being thrown at the following line, where my core profile
>> is being initialised:
>>
>> FAME_PROFILE_MP EG4_CORE(profil e)->FAME_OVERLOADE D(init)(profile ,context,params ,buffer,size);[/color]
>
> What's FAME_PROFILE_MP EG4_CORE ?
>[color=green]
>> FAME_OVERLOADED is defined in fame.h:
>>
>> /* object management */
>> #define FAME_EXTENDS(t) t super
>> #define FAME_NEW(t) t ## _constructor((t *) malloc(sizeof(t )))
>> #define FAME_CONSTRUCTO R(t) t * t ## _constructor(t *this)
>> #define FAME_DELETE(x) free(x)
>> #define FAME_OVERLOADED (x) super_ ## x[/color]
>
> Provide more code and we'll be able to help you.
>
>
> Jonathan[/color]


--
"Anyone who abandons what is done for what aught to be done
learns his ruin rather than his preservation"

http://www.redbrick.dcu.ie/~keno/guestbook.jsp

[Jonathan Mcdougall]

Re: C/C++ undefinded symbol problem

> During visiting hours Jonathan Mcdougall said:[color=blue]
>[color=green]
>>Mount Everist wrote:
>>
>>With the kind of code you provide, I can only make a wild guess.
>>
>>[color=darkred]
>>>I'm just wondering if anyone ever ran into this error while changing someone
>>>elses code:
>>>
>>>error while loading shared libraries: libfame.so.1: undefined symbol:
>>>FAME_DECODER _MPEG[/color]
>>
>>What's FAME_DECODER_MP EG ?
>><snip>
>>[/color][/color]

Please, don't top-post.
[color=blue]
> Actually, I was hoping for more of a pointer to what could be[/color]
causeing > that error in an app. I don't expect you to know anything
about the[color=blue]
> code I'm using.[/color]

So please include a complete "working" example of what your problem is.
You cannot expect receiving some help if we cannot determine what's
going on in your program.


Jonathan