Building on Windows

Install MSYS2

Download and run the msys2 installer from I’ve only tested with the 64bit version, 32bit should work as well (but come on, it’s 2017…) Make sure that the path you select for installation doesn’t contain any spaces. (Don’t blame me for that one)

Start MSYS console

Launch the Start Menu item “MSYS2 mingw 64 bit” you should be greeted with a console window. All steps below refer to what you should type into that window.

Install updates


pacman -Syu

if it tells you to close restart msys, close the console window and start it again. Then run pacman -Syu again.

Install dependencies


pacman -S mingw-w64-x86_64-gtkmm3 git base-devel \
mingw-w64-x86_64-yaml-cpp mingw-w64-x86_64-boost \
mingw-w64-x86_64-sqlite3  mingw-w64-x86_64-toolchain  \
mingw-w64-x86_64-zeromq mingw-w64-x86_64-glm zip \
mingw-w64-x86_64-libgit2 mingw-w64-x86_64-oce \
mingw-w64-x86_64-podofo mingw-w64-x86_64-libzip --needed

When prompted, just hit return. Sit back and wait for it to install what’s almost a complete linux environment.

Before continuing you may change to another directory. It easiest to type cd followed by a space and drop the folder you want to change to on the window.

Clone horizon

git clone
cd horizon

Build it

make -j 4

You may adjust the number to the number of CPUs in your system to speed up compilation. Expect 100% CPU load for several minutes. Due to debug symbols the resulting executables are of considerable size.


You won’t be able to double-click the resulting executables since all the required DLLs are in a directory unknown to windows. You’ll have to launch them from the mingw shell using ./horizon-eda for example. For the pool download to work, you’ll have to copy the file /mingw64/ssl/certs/ca-bundle.crt to the directory the directory horizon-eda.exe resides in.


To create the zip archive as it’s available from the CI, run ./