Add documentation for the installation.

1 files changed, 14 insertions, 3 deletions

diff --git a/README b/README
index dbee1978..f299fca8 100644
--- a/README
+++ b/README
@@ -1,6 +1,8 @@
     Copyright (C) 1989-2006, 2008, 2009, 2012-2013
       Free Software Foundation, Inc.
 
+    Last Update: 15 Apr 2013
+
     Copying and distribution of this file, with or without modification,
     are permitted in any medium without royalty provided the copyright
     notice and this notice are preserved.
@@ -35,9 +37,17 @@ The most recent released version of `groff' is always available by
 anonymous ftp from `ftp.gnu.org' in the directory `gnu/groff'.
 
 The current development version of `groff' is available from a `CVS'
-repository.  You can access it by first selecting a parent directory
-in which to create a working copy (call it, say, `~/cvswork'), and
-then executing the commands
+repository.
+
+It makes sense if you first declare the following shell variable in
+your system:
+
+  export CVS_RSH
+  CVS_RSH=ssh
+
+You can access it then by selecting a parent directory in which to
+create a working copy (call it, say, `~/cvswork'), and then executing
+the commands
 
   cd ~/cvswork
   cvs -d:pserver:anonymous@cvs.savannah.gnu.org/sources/groff -z5 co groff
@@ -77,6 +87,7 @@ following to apply the diff file:
 Depending on your requirements, you may need at least some of the
 following tools to build `groff' directly from its source:
 
+  perl >= v5.6.1 (see macro GROFF_PERL in m4/groff.m4)
   ghostscript
   the psutils package
   the netpbm package