Docs for build on Windows with MSYS2

README.md

@@ -80,7 +80,38 @@ Configure and run:
 
 - `$ make -j`
 
-### Build documentation
+# Installation - (x86_64) Windows (with WinPython), build with MSYS2
+
+## Prerequisites
+
+- Download and install [WinPython](https://winpython.github.io)
+- Download and install [MSYS2](https://msys2.org). Make sure to install the
+  x86_64 version.
+- Download and install [Git for Windows](https://git-scm.com)
+
+- When unzipping WinPython, make sure to choose a proper and simple path, i.e.
+  C:\winpython
+- Append C:\winpython\ to the PATH environment variable.
+- Run Python and install Pybind11
+    - `python -m pip install pybind11`
+
+
+- Open a msys2 **MINGW64** terminal. And run:
+
+    - `pacman -S git`
+
+- Then clone the LASP repo:
+
+    - `git clone https://code.ascee.nl/ascee/lasp`
+    - `cd lasp`
+
+- Configure MSYS2 further, and run cmake:
+
+    - `scripts/install_msys2_buiddeps.sh`
+    - `scripts/configur_cmake_msys2.sh`
+
+
+# Documentation
 
 In directory: