alpha amd64 arm arm64 hppa ia64 m68k mips ppc ppc64 riscv s390 sparc x86 # Prefix keywords amd64-linux arm-linux arm64-linux ppc64-linux x86-linux arm64-macos ppc-macos x64-macos sparc-solaris sparc64-solaris x64-solaris x86-solaris x64-winnt x86-winnt x64-cygwin