UNIX installation specific functions.  Please read this file.

0. Building and installing JED requires that you also have the S-Lang library
   to link to (cc *.c -lslang).  Build it first.  It should be in ../slang.
   You may have to get this library if you do not already have it or your
   version is too old.  Get it from space.mit.edu in pub/davis/slang.

1. Pick some place for JED.
   JED is distributed in a TREE structure:

     JED_ROOT/
     JED_ROOT/src
     JED_ROOT/info
     JED_ROOT/doc
     JED_ROOT/lib
     JED_ROOT/bin
     
   Here JED_ROOT can be anything (e.g., /usr/local/jed).  It must be specified
   in the makefile.  It is important that the subdirectories under JED_ROOT
   remain intact.  An environment variable called `JED_ROOT' can also be
   created to over ride the value compiled with the executable.

   For simplicity, suppose that after you have unpacked the jed distribution,
   from the directory:

			    /usr/users/myname/src
     
   to create:

			/usr/users/myname/src/jedxx-y

   Let's say that you want JED_ROOT to be /usr/local/jed.  Then, AFTER you
   have successfully installed jed, you can simply do:

	       mv /usr/users/myname/src/jedxx-y /usr/local/jed
     
   Better yet, simply make /usr/local/jed to be a link:

	     ln -s /usr/users/myname/src/jedxx-y  /usr/local/jed
	     
   !! Please note that if you have an old version of JED installed, remove
      any environment variable called JED_LIBRARY.  It is obsolete.

3. Build JED.
   To actually build JED, move to the src directory in the JED distribution
   and copy makefile.unx to makefile:

                     cp makefile.unx makefile

   Edit the makefile to reflect your system.  Instructions are in it.  This
   is also the step where you must specifiy the value of JED_ROOT as
   described above.
   
         * note:  JED assumes that the system supplied memcmp routine performs
	          an unsigned comparision.  This is NOT the case for SunOS.
		  If your system uses a signed comparison for memcmp, do not
		  use the -DHAS_MEMCMP option.  If you do not know, do not
		  use it either.
		  
	 * note:  On Linux systems, JED may be compiled to take advantage of
	          the GPM mouse server.  See the mouse section in the
		  makefile for enabling this.
   
   Then type `make' at the prompt.
   
3.1 

   If you want to build the XWindows version of JED, type:
   
      make xjed
      
   at the prompt (assuming you have correctly edited the makefile).

3.2
   If you would like to use JED's rmail mode, first read doc/rmail.txt.  
   Then type:
    
        make getmail
	
3.3
   JED comes with a highlighting recursive grep program called rgrep. Type:
        
        make rgrep
	
   Then entering:
   
        ./rgrep
	
   will dump out a usage.  Do with it what you want.  It is useful and IMHO 
   is better than grep.
   
4. Copy the new executable to somewhere on your path, e.g.,

		       cp ./jed /usr/local/bin
		       rehash

5. Now move the distribution to the location of JED_ROOT as specified 
   in the first step.
   
6. By default, when JED starts up, it will load some files out of
   JED_ROOT/lib then it will look for the file .jedrc in your home directory.
   If it does not find it, it will load the default file from JED_ROOT/lib.
   This will give you both emacs and edt emulation.  If you do not want
   that, you will need to copy JED_ROOT/lib/jed.rc to $HOME/.jedrc and edit it.
   
   In fact, you are encouraged to copy jed.rc to $HOME/.jedrc and make your
   own personal changes there.  The jed.rc file should be regarded as a
   template for .jedrc and should not be changed.  Many Unix users do not
   want EDT editor bindings.  However, JED is shipped with the EDT bindings
   enabled.  If you do not want the EDT bindings, disable them in your .jedrc
   file.

   In particular, read site.sl which is the first file loaded when JED
   starts.  Site specific customization should be placed in defaults.sl. For
   example, my defaults.sl on my linux system simply loads linux.sl. (See
   linux.sl) This sets keybindings for the appropriate for console and sets
   the color to white on blue.

   See site.sl for details.  
   
8. Optional but highly recommended.  Preparse the S-Lang files.  This
   is done by running JED as:
     
         % jed -batch -n -l preparse.sl
	 
   This creates pre-parsed *.slc files that load quicker than *.sl files.
   If this step fails to work for some reason, JED is probably not properly
   installed. 
   
9. Read the bit about defaults.sl in install.all for customizing your
   distribution. 
   
10. Again optional: There is a JED announcement list.  If you want to be
    notified of upcoming JED releases, send email to me :
   
       davis@space.mit.edu
       
11. That's it.  Enjoy.

--John
