A project is a build combination of hardware architecture, SoC, board and product.\n So you need to add them first.
Then you can add your new project.The format of the message line need follow:
arch_dir_name soc_dir_name board_dir_name(chip_name+_+package_name) project_dir_name
Let's take ARCH arm64, SOC a1, BOARD ad401_a113l, PRODUCT speaker for example.
Please add the following line to boards/$ARCH/build_combination.in.
arm64 a1 ad401_a113l speaker
Q&A