Building Lutro from source is only needed if you want to modify Lutro. If you just want to develop games, move to Getting started
To build Lutro from source, you will need git, a C compiler like gcc or clang and make.
On Windows, we recommand using Git Bash and mingw-w64.
Clone the repo:
git clone https://github.com/libretro/libretro-lutro.git
Then change directory to libretro-lutro and build:
make
On Windows, you might need to specify CC
CC=gcc make
You should then find the binary in the form of a shared library named lutro_libretro.
See the top of the Makefile for more build options.