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