1 compile and install

./configure --prefix=/usr --sysconfdir=/etc --libexecdir=/usr/libexec
make
make install

libexecdir should change as you system path.
sysconfdir must be /etc


2 custom

modify data/Xsession.in as your distribution

/etc/lxdm/PreLogin
before login, have root's context

/etc/lxdm/PostLogin
login, before Xsession, user's context

/etc/lxdm/PostLogout
when session logout done and ui ready

/etc/lxdm/LoginReady
lxdm start done, called after ui ready

