[debian-mysql] Bug#1006531:

[Daniel Black]

Actual error earlier in logs:

-- Performing Test HAVE_PEERCRED
-- Performing Test HAVE_PEERCRED - Failed
-- Performing Test HAVE_SOCKPEERCRED
-- Performing Test HAVE_SOCKPEERCRED - Failed
-- Performing Test HAVE_XUCRED
-- Performing Test HAVE_XUCRED - Failed
-- Performing Test HAVE_UNPCBID
-- Performing Test HAVE_UNPCBID - Failed
-- Performing Test HAVE_GETPEERUCRED
-- Performing Test HAVE_GETPEERUCRED - Failed
-- Performing Test HAVE_GETPWUID_POSIX_FINAL
-- Performing Test HAVE_GETPWUID_POSIX_FINAL - Failed
-- Performing Test HAVE_PEERCRED_STRUCT
-- Performing Test HAVE_PEERCRED_STRUCT - Failed
....
CMake Error at cmake/plugin.cmake:327 (MESSAGE):
  Plugin AUTH_SOCKET cannot be built
Call Stack (most recent call first):
  CMakeLists.txt:434 (CONFIGURE_PLUGINS)

So no known AUTH_SOCKET implementation on hurd is there, but the
authentication is forced on.