I am getting an error in the autoreconf phase for libpthread in glibc/hurd here
Check the attached build.log file
>  #:phases (alist-cons-before
>                          'pre-configure 'autoconf
>                        (lambda _
>                            (system* "autoreconf" "-vi" "libpthread"))

I placed libtool as a native input as Mark Weaver suggested but it doesn't seem to fix it
("libtool" ,libtool "bin")

Any ideas?

Manolis