I didn't tested the building on Windows or Mac myself, but it is possible since wxWidgets and Lua C API are both multiplatform
The prerequisites are wxWidget and Lua C API. It's that simple and can be easily installed with your distro package manager.
Prerequisites:
dnf install wxGTK3 wxGTK3-devel lua-devel
Building:
git clone https://github.com/GustavoAle/alk
cd alk
make
Run:
./alk.elf
Prerequisites:
apt install build-essential libwxgtk3.0-gtk3-dev liblua5.1-dev
Building:
git clone https://github.com/GustavoAle/alk
cd alk
export ALKTARGET=lua51
make
Run:
./alk.elf