1subdir('alpha') 2subdir('arm') 3subdir('avr') 4subdir('cris') 5subdir('hexagon') 6subdir('hppa') 7subdir('i386') 8subdir('loongarch') 9subdir('m68k') 10subdir('microblaze') 11subdir('mips') 12subdir('openrisc') 13subdir('ppc') 14subdir('riscv') 15subdir('rx') 16subdir('s390x') 17subdir('sh4') 18subdir('sparc') 19subdir('tricore') 20subdir('xtensa') 21