Add autoconf build system for bundled C sources

[hasufell]

Fixes #33

[hasufell]

@vmchale is the symbol clash resolved in the new libarchive version? In that case we may not need this. But it's an alternative approach that may be more resilient, but incurs additional maintenance cost.

[hasufell]

This file is a partial rip-off of the upstream configure.ac... so it might diverge in the future (just like config.h).

[hasufell]

We could also split out into two packages similar to:

• https://hackage.haskell.org/package/lzma
• https://hackage.haskell.org/package/lzma-clib

[hasufell]

It seems splitting packages is actually problematic, because libarchive itself needs the headers archive.h and archive_entry.h. I'm not sure cabal has a way of installing headers for a package and having another use them.

[hasufell]

It seems splitting packages is actually problematic, because libarchive itself needs the headers archive.h and archive_entry.h. I'm not sure cabal has a way of installing headers for a package and having another use them.

It actually works with install-includes.

[vmchale]

Wonderful, thanks!

Maybe mention the autoreconf -fi step in a README.md somewhere? I had to look at the CI script to figure out how to run/test locally.

[hasufell]

Maybe mention the autoreconf -fi step in a README.md somewhere? I had to look at the CI script to figure out how to run/test locally.

Done

[hasufell]

Nothing left here I think

[hasufell]

@vmchale this is good to go

[hasufell]

@vmchale if you make me proper maintainer (including the hackage package, my handle there is @maerwald), then I can finalize this myself.

[vmchale]

Ah sorry! I hope you were able to merge at least? I've added you on Hackage as well!

Thanks again!