argmatch
argp
backupfile
+closeout
dirname
error
exclude
+exitfail
fileblocks
fnmatch-gnu
ftruncate
quote
quotearg
rmdir
+rpmatch
safe-read
save-cwd
savedir
setenv
+stat-time
stdbool
stpcpy
+strdup
strtol
strtoul
timespec
+unlinkdir
unlocked-io
utime
+utimens
+version-etc-fsf
xalloc
xalloc-die
xgetcwd