On glibc, include sysmacros.h directly

On glibc, major, minor, and makedev are all defined in
sys/sysmacros.h with types.h only including this for historical
reasons. A future release of glibc will remove this behaviour,
meaning that major, minor, and makedev will no longer be defined
for us without including sysmacros.h.

ls.c

@@ -1,6 +1,9 @@
 /* See LICENSE file for copyright and license details. */
 #include <sys/stat.h>
 #include <sys/types.h>
+#ifdef __GLIBC__
+#include <sys/sysmacros.h>
+#endif
 
 #include <dirent.h>
 #include <grp.h>