HAVE_DIRFD        235 .ext/include/x86_64-linux/ruby/config.h #define HAVE_DIRFD 1
HAVE_DIRFD        629 dir.c          #  define HAVE_DIRFD 1
HAVE_DIRFD        632 dir.c          #  define HAVE_DIRFD 1
HAVE_DIRFD          3 ext/-test-/dir/extconf.h #define HAVE_DIRFD 1