Pack
====

Pack is a simple serialisation and deserialisation library for C.

Build health:

-   Arch Linux
    [![builds.sr.ht status](https://builds.sr.ht/~tk/pack/commits/archlinux.yml.svg)](https://builds.sr.ht/~tk/pack/commits/archlinux.yml?)
-   OpenBSD
    [![builds.sr.ht status](https://builds.sr.ht/~tk/pack/commits/openbsd.yml.svg)](https://builds.sr.ht/~tk/pack/commits/openbsd.yml?)
-   FreeBSD
    [![builds.sr.ht status](https://builds.sr.ht/~tk/pack/commits/freebsd.yml.svg)](https://builds.sr.ht/~tk/pack/commits/freebsd.yml?)
-   Alpine
    [![builds.sr.ht status](https://builds.sr.ht/~tk/pack/commits/alpine.yml.svg)](https://builds.sr.ht/~tk/pack/commits/alpine.yml?)

Dependencies
------------

Pack has no runtime dependencies. The following is a list of build dependencies:

-   An implementation of redo
    -   <https://raw.githubusercontent.com/apenwarr/redo/redo-0.42d/minimal/do>
        Copy it to the source directory, make it executable and run it. Only
        designed for building. For development, one of the other implementations
        is recommended.
    -   <http://news.dieweltistgarnichtso.net/bin/redo-sh.html> Tested building
        and development. Slightly overzealous rebuilds. Performance issues with
        jobserver.
    -   <https://jdebp.uk/Softwares/redo/> Tested building and development. Bugs
        with jobserver.
    -   <https://github.com/apenwarr/redo> Tested for building. May have some
        bugs when used for development.
    -   <https://github.com/leahneukirchen/redo-c/> Tested for building.
        Overzealous rebuilds but generally very fast.
-   A C11 compiler with GCC style parameters (clang works)
-   POSIX cat, find, rm, sed, sh and tr
-   xargs with support for the `-r` gnu extension
-   bash 4.4 or newer (parameter expansion transformations)

Compilation
-----------

Optionally run `./configure` (see `./configure -h` for options).

Some build hosts require calling `./configure` with `-B-lm` to pass `-lm` to the
linker for certain math.h functions.

Run `redo all` to build the library and tests.

### Cross Compilation

To cross compile, run `./configure` as normal and edit the resulting `config.rc`
to set `TCC` to the target compiler. Additional flags can be passed via the
arrays `TCFLAGS`, `TCPPFLAGS`, `TLDFLAGS`, and `TLDLIBS`. Host specific flags
can be passed via the corresponding `H<name>` arrays.

For example, to cross compile for windows using `i686-w64-mingw32-gcc` as the
target compiler and `clang` as the host compiler:

```
$ CC=clang ./configure
$ echo TCC=i686-w64-mingw32-gcc >>config.rc
$ redo all
```

Testing
-------

Run `./test` to run all the tests.

Installation
------------

Not implemented yet.

Development
-----------

Please configure with `-w` and ensure code compiles cleanly. Be aware that
different compiler versions can enable different warnings. If in doubt, ask.

Contributing
------------

To contribute, please send a patch to me at <tk+pack-patches@the-tk.com>.

Bugs
----

* pack assumes a two's complement implementation of C
* pack cannot build on OSX without installing a newer bash and a fixed xargs