DCP-o-matic for Windows is built using MXE inside a docker container. I host this on Linux but it should also be possible to use other operating systems.
A docker image first needs to be created, using the following Dockerfile:
FROM ubuntu:20.04
ARG DEBIAN_FRONTEND=noninteractive
RUN apt-get update
RUN apt-get -y install \
autoconf automake autopoint bash bison bzip2 flex gettext \
git g++ gperf intltool libffi-dev libgdk-pixbuf2.0-dev \
libtool-bin libltdl-dev libssl-dev libxml-parser-perl make \
openssl p7zip-full patch perl pkg-config python ruby scons \
sed unzip wget xz-utils openssh-server cmake nsis yasm curl lzip vim \
ccache
RUN cd /opt && git clone git://git.carlh.net/git/mxe.git && cd mxe && git checkout carl-2 && make
RUN useradd -ms /bin/bash -u user_id user_name
where user_id is your numerical user ID on the host system and user_name is your user name. Build the image using
docker build -t windows .
This will take a while as it has to build lots of DCP-o-matic's dependencies.
The final step is to build DCP-o-matic itself. For this I use a
python script which I wrote, called cdist. Download it using
git clone git://git.carlh.net/git/cdist.git
then copy the cdist script somewhere onto your path (e.g. /usr/local/bin).
cdist needs a file ~/.config/cdist which should contain:
git_prefix git://git.carlh.net/git/
mxe_prefix /opt/mxe
Once you have done this,
cdist -p dcpomatic -t windows-64 package
should build a Windows installer of DCP-o-matic for 64-bit.