Create libopenmpt script

[pepijn-devries]

See also autobrew/bundler#2

Required for https://github.com/pepijn-devries/openmpt to work on MacOS

It might need some tweaking as I cannot test it from my fork...

[pepijn-devries]

pepijn-devries/openmpt#7

[pepijn-devries]

It's difficult to test this setup while not merged with the main branch. I suggest to merge this into main branch. I will then update the configure script in my package to test it...

[jeroen]

We actually first need to properly build the library that you download in this script 😅

[jeroen]

I can't get it to work. I keep getting linking errors for __ZTIN9portaudio11PaExceptionE even though when linking with both -lportaudiocpp -lportaudio. I can merge it for you but it won't work, maybe you can try to figure it out.

[pepijn-devries]

I had exactly the same problem on Windows. I had to link portaudio, but the compiler was very picky about the linking order, and it was a pain to figure out the right order (this is what worked on Windows eventually: https://github.com/pepijn-devries/openmpt/blob/master/src/Makevars.win).

We actually first need to properly build the library that you download in this script 😅

I think your refer to the configure script of my package here, right? The actual library is built by the autobrew script as I understand it. Is there an easier way to play with the linking order rather then sending subsequent pull requests? On Windows it was a painstaking process of trial and error.

[jeroen]

Yes the linking order matters for static linking. I tried re-ordering the flags but this does not seem to be the problem.

If you're on macos you can test it by building the package and hardcode PKG_LIBS manually in your src/Makevars.in