libopenmpt 0.5.0-pre.5+r11801 cross-platform C++ and C library to decode tracked music files

Quick Start

### Autotools-based

1. Grab a `libopenmpt-VERSION.autotools.tar.gz` tarball.
2. Get dependencies:
   - gcc >= 5.1 or clang >= 3.8
   - pkg-config >= 0.24
   - zlib
   - libogg, libvorbis, libvorbisfile
   - libmpg123 >= 1.14.0
   - doxygen >= 1.8
   - libpulse, libpulse-simple (required only by openmpt123)
   - portaudio-v19 (required only by openmpt123)
   - libFLAC (required only by openmpt123)
   - libsndfile (required only by openmpt123)
3. Optional:
   - libSDL >= 1.2.x (required only by openmpt123)
4. Run:

       ./configure
       make
       make check
       sudo make install

### Windows

1. Get dependencies:
   - Microsoft Visual Studio >= 2017
2. Optionally get dependencies:
   - Winamp SDK
   - XMPlay SDK
3. Checkout `https://source.openmpt.org/svn/openmpt/trunk/OpenMPT/` .
4. Open `build\vs2015\openmpt123.sln` or `build\vs2015\libopenmpt.sln` or `build\vs2015\xmp-openmpt.sln` or `build\vs2015\in_openmpt.sln` in Microsoft Visual Studio 2015.
5. Select appropriate configuration and build. Binaries are generated in `bin\`
6. Drag a module onto `openmpt123.exe` or copy the player plugin DLLs (`in_openmpt.dll` or `xmp-openmpt.dll`) into the respective player directory.

### Unix-like

1. Get dependencies:
   - GNU make
   - gcc >= 5.1 or clang >= 3.8
   - pkg-config
   - zlib
   - libogg, libvorbis, libvorbisfile
   - libmpg123 >= 1.14.0
   - libpulse, libpulse-simple (required only by openmpt123)
   - portaudio-v19 (required only by openmpt123)
   - libFLAC (required only by openmpt123)
   - libsndfile (required only by openmpt123)
2. Optional:
   - libSDL >= 1.2.x (required only by openmpt123)
   - doxygen >= 1.8
   - help2man
3. Run:

       svn checkout https://source.openmpt.org/svn/openmpt/trunk/OpenMPT/ openmpt-trunk
       cd openmpt-trunk
       make clean
       make
       make doc
       make check
       sudo make install         # installs into /usr/local by default
       sudo make install-doc     # installs into /usr/local by default
       sudo ldconfig             # required on some systems (i.e. Linux)
       openmpt123 $SOMEMODULE