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Lean for Windows

A native Lean binary for Windows can be generated using msys2. It is easy to install all dependencies, it produces native 64/32-binaries, and supports a C++11 compiler.

Installing dependencies

The official webpage of msys2 provides one-click installers. We assume that you install msys2 at c:\msys64. Once installed it, you should run the "MSYS2 MinGW 64-bit shell" from the start menu. It has a package management system, pacman, which is used in Arch Linux.

Here are the commands to install all dependencies needed to compile Lean on your machine.

pacman -S mingw-w64-x86_64-gcc mingw-w64-x86_64-ninja mingw-w64-x86_64-cmake git

Then follow the generic build instructions in the msys2 shell.

Install lean

You can use the install ninja/make target to install Lean into, by, default, C:\\User Programs (x86)\\LEAN. To change this, add -DCMAKE_INSTALL_PREFIX=path/you/want to your cmake invocation.