coreboot build environment
Install git:
sudo apt install git
Clone the source repository:
git clone https://review.coreboot.org/coreboot.git coreboot cd coreboot/
Install build dependencies:
sudo apt install acpica-tools bison build-essential doxygen flex gnat libncurses5-dev libpci-dev m4 zlib1g-dev
Build the cross-compiler:
make crossgcc-i386