Compilation and Installation Summary:
------------------------------------

  setenv CAD_HOME /a/new/empty/directory
  make config
  make
  make install

    Notes:

    1) CAD_HOME was traditionally something like /home/cad (belonging to
       a user named "cad" with a valid entry in the system passwd file
       such that "~cad" expands to "/home/cad").  A more standard
       approach is to set CAD_HOME to /usr/local (if you have root access)
       or ~/cad (if you don't).  The install process will create CAD_HOME
       (if necessary) and create and install into subdirectories of this
       root, namely ${CAD_HOME}/bin for executables and
       ${CAD_HOME}/lib/magic for run-time stuff.

    2) In "sh" and "bash" shells, replace the "setenv" command above with
       "export CAD_HOME=/a/new/empty/directory"

    3) Depending on the system, it may be necessary to use "gmake" (GNU
       make) in place of "make".  This is almost certainly true if
       "make config" exits immediately complaining about errors in the
       "defs.mak" file.

    4) In rare circumstances, the make process may not be able to
       bootstrap due to the absence of a "defs.mak" file.  If this
       happens, do "touch defs.mak" to create an empty file.

Notes to Magic maintainers:
--------------------------

    This directory contains all the sources for the Magic system and related
    programs.  The system runs on a number of machines.  You should read the
    Magic Maintainer's manual as well as the introduction to Magic before
    compiling the system.  These documents are in the "doc" subdirectory in
    ditroff/gremlin format as well as in Postscript.
    
    The compilation process happens in three steps.  
    
    (1) To configure the system for a particular machine, set your
    CAD_HOME environment variable to where you would like to install
    magic and then run "make config" and answer the questions.  This
    sets up compile flags in the defs.mak file.  The defaults do not
    include compile-time optimization. If you want to optimize, edit
    defs.mak after you run "make config" and add whatever flags you
    want. Some systems already have some flags in an alternate CFLAGS
    that's commented out. Keep in mind that most systems assume that
    the vendor supplied "cc" is present. If you want to compile with
    "gcc" on, let's say, Solaris or IRIX, you'll have to remove the
    compiler-specific stuff in the flags. See the known_flags.txt file
    for hints. The real solution to this problem is to use a modern
    compilation system like "autoconf" to create the makefiles. We're
    working on it.

    (2) To then compile the system, type "make".  If you are porting
    magic to a new system, your first step should be to set up the
    constants at the end of misc/magic.h. 

    (3) When you are happy with it, do a "make install" to set up a
    tree stucture in the directory described by your CAD_HOME
    environment variable.

    See Maintainer's Manual #1 for more information on how the sources
    are organized and what compile-time options are available.

Utility programs and libraries (ext2sim, magicusage):
    In addition to Magic, this directory contains several additional utility
    programs.  These are described briefly in Maintainer's Manual #1, and
    more fully in their respective man pages.  Each programs resides in a
    different subdirectory of this one.  If you want to recompile any of these
    programs, you'll need to re-make the rest of Magic, since they use modules
    from Magic.

Updates on the Net:
-------------------
Use your World Wide Web browser to read:

	http://www.research.digital.com/wrl/magic/magic.html
	http://www.csl.cornell.edu/~rajit/magic/

If you don't have web access, use FTP to following site:

        machine:    gatekeeper.dec.com   (16.1.0.2)
        account:    anonymous
        password:   guest
        directory:  pub/DEC/magic/6.4/notes

What's new in 6.4:
------------------
This release, magic 6.4, contains the following modifications:

	1) A number of bug fixes from the 6.3 notes.

	2) A version numbering facility for tech files.  Please add a new 
	   section to each tech file after the "tech" section, following 
	   this example:

		version
		    version 2.0.3
		    description "MOSIS CMOS 0.13u Nano-nano technology."
		end
		    
	   Older versions of magic will complain about the new section, but
	   no harm will be done.

	4) Various comments describing dates and versions, including the
	   above tech file information, are not written to the CIF file.

	3) Support for patches and versioning:  A new command called "version"
	   lists out the version number and patches that are installed.
	   A header file called patchlevel.h keeps track of a PATCHLEVEL 
	   integer and a string in patchlevel.c keeps track of the names of
	   each installed patch.  When posting patches to the net please be
	   sure your patch updates variables.  See the files for details.

	4) Ports to Alpha AXP OSF/1, SGI/IRIX (courtesy of Stefanos 
	   Sidiropoulos) and Linux (courtesy of Harold Levy).

	5) A change in the extractor algorithm to provide shielding for
	   perimeter capacitances. Also a change in ext2sim to maintain
	   information about the area and perimeter of diffusion and
	   the bulk connection of the fets (written by Stefanos
	   Sidiropoulos).


What's new in 6.5:
-----------------
        1) Bug fixes in the extractor propagation of attributes (SU)

        2) New version of ext2sim ext2spice with support for hspice, spice2, 
           and spice3 (SU)

        3) Integration of the port to SUN's Solaris OS (MIT)

        4) Port to FreeBSD2.x. Thanks to John Wehle (john@jwlab.feith.com)

	5) Integration of part of the DEC/WRL code fragments into the drc
	   code. Since the code is not completely trustworthy the fragments 
	   are ifdef'd so if need be the drc will behave exactly as the old one.
	   (you just need to change the #define DRC_EXTENSIONS in drc/drc.h
	    to do that).  For a description of the extensions look into 
	    doc/tutwrl1.ps (DEC/WRL)
	
	6) Integration of some patches in to the CIF code that introduce:
	    (i)  A new cif operation squares-grid which generates contacts 
		 on grid.
            (ii) A new cif layer command min-width is added so that generated
		 layers have the correct min drc width when magic expands
		 layers in the hierarchy (like it does with wells).
		 

Magic-6.5 crashes if compiled with gcc in Solaris2.x/SunOS5.x (curiously enough 
it does not have that problem if compiled with Sun's cc compiler). To get 
around that you need to set the flag -DUSE_SYSTEM_MALLOC flag in misc/DFLAGS 
after you run make :config. The error has to do with allignment of doubles 
and an alternative way to get rid of it is to change extract/extractInt.h 
so that CapValue is float instead of double.  Nevertheless the first method 
is recomended.

What's new in 6.5.1:
--------------------
	1) Support for true-color displays (courtesy of Michael Godfrey)
	   Look into doc/hires-color.txt
	2) Minor updates in ext2sim, ext2spice

What's new in 6.5.2:
--------------------
Provided by R. Timothy Edwards (Johns Hopkins Applied Physics Laboratory):
        1) Support for OpenGL 
           Look at doc/open_gl.txt
        2) Minor update to :config for selection of multiple graphics
           interfaces.
        3) Updates to dstyle and cmap files
        4) Always do a check to see if there is only one active layout
           window:  There's no need to annoy the user with complaints
           of "Put the cursor in a layout window" when there is no  
           possibility of confusion about the matter.
    
Provided by Philippe Pouliquen (Johns Hopkins University):
        5) "readline" command line editing capability
        6) Macro extensions for X11 (see doc/macro_extension.txt)
        7) Better handling of filenames on the UNIX command-line (multiple
           filenames allowed, ".mag" extension not required).
        8) New commands:  "child", "parent", "down", "xload", "list", "listall",
           "listtop", "shell", "imacro".
        9) Command alterations: "box [+|-][dir]", "select visible", area of box
           included in "box" command.
       10) Updated .magic macro file (source in magic/proto.magic, install in
           ${CAD_HOME}/lib/magic/sys/.magic) (see doc/default_macros.txt).

What's new in 7.1:
------------------
Provided by Rajit Manohar (Cornell University) (formerly version 7.0):
       11) Implementation of "scheme" (a subset of lisp), a powerful method
	   of generating complex functions.
       12) Using CVS to facilitate source code development from multiple sites.
       13) New commands using scheme:  Too many to mention here;  see the
	   tutorials in doc/tutscm* for explanations.  Functions themselves
	   are defined in ${CAD_HOME}/lib/magic/scm/*.scm
       14) Overhauled the readline interface. See doc/textfiles/readline.txt for
       details.
       15) Changed tons of stuff about the build environment:
            - the include paths in all files is now canonical.
            - redid the make process and rewrote all Makefiles.
            - tons of other small things that hopefully make the build process
              nicer.
