#include <sys/types.h>
#include <dirent.h>
+/* On most systems <limits.h> would have given us this, but
+ * not on some systems (e.g. GNU/Hurd).
+ */
+#ifndef PATH_MAX
+#define PATH_MAX 4096
+#endif
+
#ifdef __GNUC__
#define NORETURN __attribute__((__noreturn__))
#else