Re: Some functions in .xs file can't be found

[bulk88]

xs/tag.xs has in it

#include "tag.h"
 
MODULE = Audio::TagLib          PACKAGE = Audio::TagLib::Tag
PROTOTYPES: ENABLE
 
################################################################
#
# PUBLIC MEMBER FUNCTIONS
#
################################################################
 
void
TagLib::Tag::DESTROY()
CODE:
    /* skip if READONLY flag on */
    if(!SvREADONLY(SvRV(ST(0))))
        delete THIS;

see "PACKAGE = Audio::TagLib::Tag"? That is where the method calls will wind up in. But since this is C++ XS which I'm not familiar with, not C XS, I think the "TagLib::Tag::" get stripped off.

As others said, your header() method in XS exists in a different class than you want it. Check the docs of your C++ library whether the TagLib::Tag class has a header method or not. According to http://taglib.github.io/api/classTagLib_1_1Tag.html it does not.

BTW, you should also mention you are the CPAN maintainer of Audio-TagLib ;)

[geoffleach]

OK, you got me. I confess I am the maintainer, alas.

The good news is that I was shooting myself in the foot by using the wrong abstraction for the file being manipulated. I needed to use Audio::TagLib::MPEG::File rather than Audio::TagLib::FileRef. The latter supports more genereic tag methods, but not the ID3v2 methods, of which header() is one.

The bad news is that now I have to write more tests. Sigh.

Thanks to all who replied.