1if 'RISCV' not in config.root.targets: 2 config.unsupported = True 3 4flags = '--target=riscv64 -nostdlib -ffreestanding -Wl,--emit-relocs' 5 6config.substitutions.insert(0, ('%cflags', f'%cflags {flags}')) 7config.substitutions.insert(0, ('%cxxflags', f'%cxxflags {flags}')) 8