Instructions for compiling and installing NGSolve (and netgen) from source under WSL

Installation & Troubleshooting
7

Keep it up to date

To update Netgen/NGSolve go to the source directory (${BASEDIR}/ngsolve-src) and fetch the latest sources.
git pull
git submodule update --recursive --init
Note: the second line is needed to update all dependencies provided as git submodules (such as Netgen).

Then, go to the build directory (${BASEDIR}/ngsolve-build) and build/install again:
make
(or run make -j4)
make install