As suggested by Richard in [*], filled a libssh report: https://bugs.launchpad.net/ubuntu/+source/libssh/+bug/1847514
[*] https://lists.gnu.org/archive/html/qemu-devel/2019-08/msg02506.html -- You received this bug notification because you are a member of qemu- devel-ml, which is subscribed to QEMU. https://bugs.launchpad.net/bugs/1838763 Title: Bugs in SSH module (ssh.c) Status in QEMU: Confirmed Bug description: I installed gcc-8&libssh* on my Ubuntu 18.04 arm64.When I was compiling any version of qemu like 3.1.0 4.0.0or 4.1.0 with SSH support,the GCC went wrong.It said some vars undeclared like'SSH_KNOWN_HOSTS_OTHER','SSH_KNOWN_HOST_UNKNOWN',etc. To manage notifications about this bug go to: https://bugs.launchpad.net/qemu/+bug/1838763/+subscriptions
