pointers to functions in shared libraries

[P REEDER]

Several of the palmOne shared libraries have a version function with the 
following signature:
Err PalmPhotoLibGetVersion (UInt16 refNum, UInt32 sdkVersion, UInt32 
*libVersionP)

I have declared a table with some pointers to functions having that signature:
typedef struct {
        UInt32 type;
        UInt32 creator;
        char* internalName;
        char* humanName;
        Err (*GetVersion) (UInt16 refNum, UInt32 sdkVersion, UInt32 
*libVersionP);
} PalmOneLibRec;

#define NUM_PALMONE_SHARED_LIB 2
PalmOneLibRec palmOneSharedLibs[] = {
        {PalmPhotoLibTypeID , PalmPhotoLibCreatorID, PalmPhotoLibName , 
"palmOne Photo", &PalmPhotoLibGetVersion},
        {kCamLibType, kCamLibCreator, kCamLibName, "palmOne Camera Mgr", 
&CamLibGetVersion},
};


However, the above code fails to compile, with the error message
undefined reference to `PalmPhotoLibGetVersion'


If I declare a helper function:

Err CallPalmPhotoLibGetVersion(UInt16 refNum, UInt32 sdkVersion, UInt32 
*libVersionP) {
        return PalmPhotoLibGetVersion(refNum, sdkVersion, libVersionP);
}
 
I can put a pointer to this function in my table, without any problem.


Obviously, functions in shared libraries are not quite the same as functions in 
my code, but is there a way to use pointers to functions in shared libraries, 
without declaring helper functions?


[I'm using prc-tools (m68k-palmos-gcc is version 2.95.3-kgpd) under OS X 10.3.9]
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