Update pt_chown sections of the manual

The pt-chown binary is discussed in the "Running make install" section
without clarification of the needed configure option.  Clarify this
and simplfy the discription which is already covered in the "Configuring
and compiling" section.

1 files changed, 5 insertions, 8 deletions

diff --git a/INSTALL b/INSTALL
index 211fd9174c..7aa52183de 100644
--- a/INSTALL
+++ b/INSTALL
@@ -285,14 +285,11 @@ dramatically improve performance with NIS+, and may help with DNS as
 well.
 
    One auxiliary program, `/usr/libexec/pt_chown', is installed setuid
-`root'.  This program is invoked by the `grantpt' function; it sets the
-permissions on a pseudoterminal so it can be used by the calling
-process.  This means programs like `xterm' and `screen' do not have to
-be setuid to get a pty.  (There may be other reasons why they need
-privileges.)  If you are using a Linux kernel with the `devptsfs' or
-`devfs' filesystems providing pty slaves, you don't need this program;
-otherwise you do.  The source for `pt_chown' is in
-`login/programs/pt_chown.c'.
+`root' if the `--enable-pt_chown' configuration option is used.  This
+program is invoked by the `grantpt' function; it sets the permissions
+on a pseudoterminal so it can be used by the calling process.  If you
+are using a Linux kernel with the `devpts' filesystem enabled and
+mounted at `/dev/pts', you don't need this program.
 
    After installation you might want to configure the timezone and
 locale installation of your system.  The GNU C Library comes with a