Optocut is a program for generating a cost-optimized cutlist for wood. Give it a list of lumber available at your local hardware store, as well as a list of lenghts you need, and it will tell you what to buy and how to cut it. It also accounts for the width of your sawblade.
For more information, see the example.toml file. Try it out with optocut example.toml
cargo install optocut