74 lines
2.2 KiB
Markdown
74 lines
2.2 KiB
Markdown
[msys2]: http://msys2.github.io
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[pacman]: https://wiki.archlinux.org/index.php/pacman
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Lean for Windows
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----------------
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A native Lean binary for Windows can be generated using [MSYS2][msys2].
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It is easy to install all dependencies, it produces native
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64/32-binaries, and supports a C++14 compiler.
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## Installing dependencies
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[The official webpage of MSYS2][msys2] provides one-click installers.
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Once installed, you should run the "MSYS2 MinGW 64-bit shell" from the start menu.
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(The one that runs `mingw64.exe`)
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Do not run "MSYS2 MSYS" instead!
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MSYS2 has a package management system, [pacman][pacman], which is used in Arch Linux.
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Here are the commands to install all dependencies needed to compile Lean on your machine.
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```bash
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pacman -S make mingw-w64-x86_64-cmake mingw-w64-x86_64-ccache mingw-w64-x86_64-gcc git unzip
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```
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You should now be able to run these commands:
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```bash
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gcc --version
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cmake --version
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```
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Then follow the [generic build instructions](index.md) in the MSYS2
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MinGW shell, using `cmake ../.. -G "Unix Makefiles"` instead of `cmake
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../..`. This ensures that cmake will call `sh` instead of `cmd.exe`
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for script tasks.
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## Install lean
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Follow the steps in [Dev setup using
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elan](index.md#dev-setup-using-elan) regarding installation of the
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bits you just built. Note that in an msys2 environment `elan-init.sh`
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reports you need to add `%USERPROFILE%\.elan\bin` to your path, but of
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course in msys2 that needs to be a valid linux style path, like this:
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```bash
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export PATH="$PATH:/c/users/$USERNAME/.elan/bin"
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```
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## Running
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You can run `lean --version` to see if your binaries work.
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If you want a version that can run independently of your MSYS install
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then you need to copy the following dependent DLL's from where ever
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they are installed in your MSYS setup:
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- libgcc_s_seh-1.dll
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- libstdc++-6.dll
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- libgmp-10.dll
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- libwinpthread-1.dll
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The following linux command will do that:
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```bash
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cp $(ldd lean.exe | cut -f3 -d' ' | grep mingw) .
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```
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## Trouble shooting
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**-bash: gcc: command not found**
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Make sure `/mingw64/bin` is in your PATH environment. If it is not then
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check you launched the MSYS2 MinGW 64-bit shell from the start menu.
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(The one that runs `mingw64.exe`).
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