On Fri, Jul 22, 2022 at 08:48:39AM +0000, RVP wrote: > $ env bl_cv_pty=streams ./configure ... Hope the following is what it means: CONFIGURE_ENV+= bl_cv_pty=streams This did not yield any different behavior. I have to have /dev/ttyp* /dev/ttyp* in o+rw mode. Then it works, but is insecure. -- Mayuresh