Problems installing 1.0.1 gem on Windows 10 (0.7.1 works fine)

[Mcgeecorp]

I am using rubyinstaller 2.7.2 with the msys2 devkit but have tried this with 2.4, 2.5 and 2.6 as well.

I am able to get a taglib-ruby gem to build and install if I specify version 0.7.1 but I get some "crazy errors" with version 1.0.1.

Any ideas?

[Sigill]

What version of taglib do you have? taglib-ruby >= 1.0 requires taglib >= 1.11.1, as mentioned in the readme: https://github.com/robinst/taglib-ruby#installation. If you don't have taglib 1.11.1, stick with taglib v0.7.1.

[Mcgeecorp]

Yep, I am using 1.11.1

$ pacman -Qs taglib local/mingw-w64-x86_64-taglib 1.11.1-1 A Library for reading and editing the meta-data of several popular audio formats (mingw-w64)

[Sigill]

Looks like the Filename type is a simple const char* on every platform, except on Windows where it is a custom class: https://github.com/taglib/taglib/blob/e36a9cabb9882e61276161c23834d966d62073b7/taglib/toolkit/tiostream.h#L35

Unfortunately, this class lack some stuff in order to behave like a const char*. The taglib-ruby wrapper generated by Swig expects the Filename type:

• To be default-constructible.

  taglib_base_wrap.cxx:2927:20: error: no matching function for call to 'TagLib::FileName::FileName()'
   2927 |   TagLib::FileName result;
        |                    ^~~~~~

  But none is defined and the presence of a user defined copy-constructor prevents the compiler to generate one.

• To be copy-assignable.

  taglib_base_wrap.cxx:2938:47: error: use of deleted function 'TagLib::FileName& TagLib::FileName::operator=(const TagLib::FileName&)'
   2938 |   result = ((TagLib::File const *)arg1)->name();
        |                                               ^

  But since the Filename class has const data members, it is not assignable.

Hopefully, this should be an easy fix, but it must be fixed in taglib.

[robinst]

@Sigill Have you reported this to taglib?

[Sigill]

No, I have not.

[s0nspark]

I reported this in the hope of getting Ruby bindings to build again on Windows ;-)

Can anyone speak to what combination of taglib-ruby / taglib will build or work on Windows in the meantime? I'm using Ruby 3.3 along with MSys2...

[ufleisch]

Sorry for the trouble with TagLib. Version 2.0 has breaking changes. Converting a file name on Windows to char * is probably not a good idea when you want to support file names with non-ASCII characters. You should make some conditional compilation for the Windows case as has been done in VLC MR #4877

// fileName is a TagLib::FileName
#if defined(_WIN32) && TAGLIB_VERSION >= VERSION_INT(2, 0, 0)
    std::string filename = fileName.toString().to8Bit(true);
#else
    std::string filename = std::string(fileName);
#endif

Concerning TagLib::FileName result;: I would be surprised if this was ever building on Windows since TagLib::FileName never had a default constructor.