The machine architecture on which the program is running. Common values include:
"aarch64"
"alpha"
"arm"
"hppa"
"hppa1_1"
"i386"
"ia64"
"m68k"
"mips"
"mipseb"
"mipsel"
"nios2"
"powerpc"
"powerpc64"
"powerpc64le"
"riscv32"
"riscv64"
"loongarch32"
"loongarch64"
"rs6000"
"s390"
"s390x"
"sh4"
"sparc"
"sparc64"
"vax"
"x86_64"