Cross Compiling to Windows
==========================

Cross compiling mpv to Windows is supported with MinGW-w64. This can be used to
produce both 32 bit and 64 bit executables. MinGW-w64 is available from
http://mingw-w64.sourceforge.net.

You have to run mpv's configure with these arguments:

```bash
DEST_OS=win32 TARGET=i686-w64-mingw32 ./waf configure
```

While building a complete MinGW-w64 toolchain yourself is possible, people have
created scripts to help ease the process. In particular, [MXE](http://mxe.cc)
makes it very easy to bootstrap a complete MingGW-w64 environment from scratch.
See a working example below.

Alternatively, you can try [mingw-w64-cmake](https://github.com/lachs0r/mingw-w64-cmake),
which bootstraps a MinGW-w64 environment and builds mpv and dependencies.

**Warning**: the original MinGW (http://www.mingw.org) is unsupported.

Note that MinGW environments included in Linux distributions are often broken,
outdated and useless, and usually don't use MinGW-w64.

Additional dependencies
-----------------------

You need a pthread wrapper. It must be interoperable with native Windows
threads. pthreads-win32 or MinGW pthreads might work.

If you want ``--input-file=...`` to work, you need libwaio. It's available
from: git://midipix.org/waio

Example with MXE
----------------

```bash
# Before starting, make sure you install MXE prerequisites. MXE will download
# and build all target dependencies, but no host dependencies. For example,
# you need a working compiler, or MXE can't build the crosscompiler.
#
# Refer to
#
#    http://mxe.cc/#requirements
#
# Scroll down for disto/OS-specific instructions to install them.

# Download MXE. Note that compiling the required packages requires about 1.4 GB
# or more!

cd /opt
git clone https://github.com/mxe/mxe mxe
cd mxe

# Set build options.

# The JOBS environment variable controls threads to use when building. DO NOT
# use the regular `make -j4` option with MXE as it will slow down the build.
# Alternatively, you can set this in the make command by appending "JOBS=4"
# to the end of command:
echo "JOBS := 4" >> settings.mk

# The MXE_TARGET environment variable builds MinGW-w64 for 32 bit targets.
# Alternatively, you can specify this in the make command by appending
# "MXE_TARGETS=i686-w64-mingw32" to the end of command:
echo "MXE_TARGETS := i686-w64-mingw32.static" >> settings.mk

# If you want to build 64 bit version, use this:
# echo "MXE_TARGETS := x86_64-w64-mingw32.static" >> settings.mk

# Build required packages. The following provide a minimum required to build
# mpv.

make gcc ffmpeg libass jpeg pthreads

# Add MXE binaries to $PATH
export PATH=/opt/mxe/usr/bin/:$PATH

# Build mpv. The target will be used to automatically select the name of the
# build tools involved (e.g. it will use i686-w64-mingw32.static-gcc).

cd ..
git clone https://github.com/mpv-player/mpv.git
cd mpv
DEST_OS=win32 TARGET=i686-w64-mingw32.static ./waf configure
# Or, if 64 bit version,
# DEST_OS=win32 TARGET=x86_64-w64-mingw32.static ./waf configure
./waf build
```