Since screen uses pseudo-ttys, the select system call, and
UNIX-domain sockets/named pipes, it will not run under a system that
does not include these features of 4.2 and 4.3 BSD UNIX.
The socket directory defaults either to `$HOME/.screen' or simply to
`/tmp/screens' or preferably to `/usr/local/screens' chosen at
compile-time. If screen is installed
setuid root, then the administrator should compile screen with an
adequate (not NFS mounted) SOCKDIR. If screen is not
running setuid-root, the user can specify any mode 777 directory in the
environment variable $SCREENDIR.
To compile and install screen:
The screen package comes with a GNU Autoconf configuration
script. Before you compile the package run
sh ./configure
This will create a `config.h' and `Makefile' for your machine.
If configure fails for some reason, then look at the examples and
comments found in the `Makefile.in' and `config.h.in' templates.
Rename `config.status' to `config.status.machine' when
you want to keep configuration data for multiple architectures. Running
sh ./config.status.machine recreates your configuration
significantly faster than rerunning configure.
Read through the "User Configuration" section of `config.h', and verify
that it suits your needs.
A comment near the top of this section explains why it's best to
install screen setuid to root.
Check for the place for the global `screenrc'-file and for the socket
directory.
Check the compiler used in `Makefile', the prefix path where to install
screen. Then run
make
If make fails to produce one of the files `term.h', `comm.h'
or `tty.c', then use filename.x.dist instead.
For additional information about installation of screen refer to the
file `INSTALLATION', coming with this package.