Bug#792551: systemd FTBFS on Alpha because of use of wrong syscall.

[Michael Cree]

Source: systemd
Version: 222-2
Severity: important
Justification: Fails to build from source but built in the past.
Tag: patch
User: debian-alpha at lists.debian.org
Usertags: alpha

Systemd FTBFS on alpha due to missing syscalls.  Build log at:
http://buildd.debian-ports.org/status/package.php?p=systemd&suite=sid

When linux 4.1 is uploaded that will fix the missing memfd_create and
getrandom syscalls, but there is one more missing syscall, namely the 
getpid syscall.

Alpha follows OSF1 rather than linux conventions on older syscalls,
thus has the getxpid syscall rather than the getpid/getppid syscalls.

Patch to fix systemd to use the getxpid syscall on Alpha is available
from the Gentoo bug system:
https://bugs.gentoo.org/attachment.cgi?id=405976&action=diff

Cheers
Michael.