===============================================================================
readme.doc        emx 0.9c    INTRODUCTION                          11-Nov-1996
===============================================================================
                                     Copyright (c) 1990-1996 by Eberhard Mattes

            *** See history.doc for important information ***

Introduction
------------

Welcome to emx 0.9c, an environment for creating 32-bit programs for
OS/2 2.x, OS/2 3.x, and DOS.  You can use the GNU C compiler to
compile programs for emx.  The main design goal of emx is to simplify
porting Unix software to OS/2 and DOS.  Moreover, you can create
`native' OS/2 programs, including Presentation Manager applications.

The emx package includes:

- emx.dll, emxio.dll, emxwrap.dll and emxlibc.dll dynamic link
  libraries for OS/2

- emx.exe DOS extender for running 32-bit programs under DOS

- emxfpemu, W. Metzenthen's FPU (387) emulator

- emxbind.exe for creating .exe files which work both under OS/2 and
  DOS

- emxomf.exe for converting .o object files (a.out) to .obj object
  files (OMF).  With emxomf and LINK386 you can create OS/2 programs
  that don't need emx.dll

- emximp.exe for creating import libraries

- emxexp.exe for creating a list of export definitions from object files

- C header files and a complete C library

- a simple graphics library for 320x200 (256 colors) mode

- a library for screen output in windows

- header files and a library for using sockets of IBM TCP/IP for OS/2

Additionally, the following GNU programs are available compiled and with
patches and sources:

- GCC 2.7.2.1, the GNU C compiler, supporting the C, C++, and
  Objective C languages

- GAS 2.6, the GNU assembler

- GDB 4.16, the GNU debugger

- ld, an ancient version of the GNU linker hacked for emx

- strip: a member of an ancient version of the GNU binary utilties

- ar, nm, size, objdump: a subset of the GNU binary utilities 2.6

- gprof, the BSD/GNU profiler

- texinfo, the GNU documentation system

- Patches for the GNU sources

- Patched source for GCC, GAS, GDB, ld, ar, nm, size, strip, objdump,
  info, makeinfo, texindex.  You can compile all these programs with
  the files that come with emx (but you also need a make utility, such
  as dmake).

You can get the complete unpatched GNU sources by anonymous ftp from
prep.ai.mit.edu and other archives such as ftp.leo.org.

Additionally, the following libraries are provided:

- some parts of the BSD C library

- the BSD data base library: dbopen()

- BSD curses library

- Henry Spencer's regexp library

- The GNU and BSD termcap libraries


Packages
--------

emx is packaged in the following files:

  emxrt.zip     emx runtime package
  emxsrcr.zip   Source for the emx runtime package
  emxdev1.zip   emx development system (without compiler, part 1)
  emxdev2.zip   emx development system (without compiler, part 2)
  emxsrcd1.zip  Source for the emx development system (part 1)
  emxsrcd2.zip  Source for the emx development system (part 2)
  emxview.zip   emx documentation in OS/2 .inf format
  emxample.zip  Sample programs
  emxtest.zip   Test programs (used for testing emx and the libraries)

GNU programs compiled for emx, patches and patched sources:

  gnudev1.zip   GNU development tools compiled for emx (part 1)
  gnudev2.zip   GNU development tools compiled for emx (part 2)
  gnuview.zip   emxgnu.inf (emxgnu.doc in OS/2 .inf format)
  gppdev.zip    Additional GNU programs and files for compiling C++
  gobjcdev.zip  Additional GNU programs and files for compiling
                Objective C
  gnupat.zip    Patches for GNU sources
  gnudoc.zip    Documentation for GNU programs (texinfo sources)
  gnuinfo.zip   GNU texinfo (includes info file browser)
  gnusrc.zip    Patched GNU sources (info, termcap, GPPDEMID)
  gbinusrc.zip  Patched GNU sources (ld, ar, nm, size, strip, objdump, gprof)
  gccsrc1.zip   Patched GNU sources (GCC 2.7.2.1, part 1)
  gccsrc2.zip   Patched GNU sources (GCC 2.7.2.1, part 2)
  gccsrc3.zip   Patched GNU sources (GCC 2.7.2.1, part 3)
  gdbsrc1.zip   Patched GNU sources (GDB 4.16, part 1)
  gdbsrc2.zip   Patched GNU sources (GDB 4.16, part 2)
  gppsrc.zip    Patched sources of libg++ 2.7.2

BSD libraries compiled for emx with sources:

  bsddev.zip    BSD libraries (curses etc.)
  bsddoc.zip    Documentation for BSD libraries
  bsdsrc.zip    Source for BSD libraries


Installing emx
--------------

For unpacking, you need unzip v5.0 or later which is available from
many archives.  Look for files named

  unzip50.exe   MS-DOS executable for unzip
  unz50_32.exe  OS/2 32-bit executable (unzip 5.0)
  unz512x2.exe  OS/2 32-bit executable (unzip 5.12)
  unzip512.exe  OS/2 or DOS executable (unzip 5.12)

Read INSTALL.DOC to learn how to install emx.

After unpacking the emx runtime and development system packages,
you'll find further information in the following files:

  \emx\doc\COPYING.EMX          emx & library license, license overview
  \emx\doc\COPYING              GNU General Public License
  \emx\doc\install.doc          Installation guide
  \emx\doc\emxrt.doc            User's guide to the emx runtime package
  \emx\doc\emxdev.doc           Application developer's guide
  \emx\doc\emxlib.doc           C library reference
  \emx\doc\faq.doc              Frequently asked questions (with answers)
  \emx\doc\build.doc            Compiling the sources
  \emx\doc\history.doc          Change log
  \emx\doc\future.doc           Things to do
  \emx\book\emxrt.inf           .inf version of emxrt.doc
  \emx\book\emxdev.inf          .inf version of emxdev.doc (optional)
  \emx\book\emxlib.inf          .inf version of emxlib.doc (optional)

After unpacking the GNU and BSD packages, you'll find further
information in the following files:

  \emx\doc\COPYING              GNU General Public License
  \emx\doc\COPYING.LIB          GNU Library General Public License
  \emx\doc\COPYING.BSD          BSD license (for libraries bsd and curses)
  \emx\doc\COPYING.SCP          Additional information for stdc++ library
  \emx\doc\emxgnu.doc           GNU development tools information
  \emx\doc\emxbsd.doc           BSD library information
  \emx\book\emxgnu.inf          .inf version of emxgnu.doc (optional)
  \emx\book\emxbsd.inf          .inf version of emxbsd.doc


Legal stuff
-----------

emx is free software; you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2, or (at your option)
any later version.

emx is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with emx; see the file COPYING.  If not, write to
the Free Software Foundation, 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA.

See \emx\doc\COPYING.EMX and \emx\doc\COPYING for details.

Instead of a list: All the trademarks used in this document and all
the other emx documents are registered to whoever it is that owns
them.


Where to get emx
----------------

emx is available for anonymous ftp on

  ftp.leo.org:          /pub/comp/os/os2/devtools/emx+gcc
  ftp-os2.cdrom.com:    /pub/os2/lang/emx09c
  ftp-os2.nmsu.edu:     /os2/unix/emx09c
  src.doc.ic.ac.uk:     /packages/os2/unix/emx09c


Other files of interest
-----------------------

emx does not come with a `make' utility.  I recommend dmake 3.8.  It's
available for anonymous ftp on

  ftp.leo.org:          /pub/comp/os/os2/devtools/utils/
  ftp-os2.nmsu.edu:     /os2/dev16/

Executables are in dmake38x.zip, source code is in dmake38s.zip.
dmake38.zip contains both dmake38s.zip and dmake38x.zip.

The emx graphics library currently supports only the 320x200 VGA mode
and some 16-color modes.  Johannes Martin has created a graphics
library for various SVGA cards.  It is available for anonymous ftp on

  ftp.leo.org:          /pub/comp/os/os2/gnu/emx+gcc/contrib/
  ftp-os2.nmsu.edu:     /os2/unix/emx09c/contrib/

You need svgakt*.zip (or svgakit*.zip) and vesa*.zip (or
vesa_emx*.zip, * is the version number).

If you want to convert the texinfo files (GCC documentation, for
instance) to OS/2 on-line books (.inf files), I recommend Andreas
Kaiser's texi2ipf program:

  ftp.leo.org:          /pub/comp/os/os2/gnu/doc/txi2ipf1.zip
  ftp-os2.nmsu.edu:     /os2/unix/tex/txi2ipf1.zip


Joining the mailing list
------------------------

An emx-related mailing list has been created.  The address for people
to request to be added to or removed from the list is:

    majordomo@iaehv.nl

To subscribe, send a message containing

    subscribe emx

to majordomo@iaehv.nl.  To unsubscribe, send a message containing

    unsubscribe emx

to majordomo@iaehv.nl.

For more information, send a message containing

    help

to majordomo@iaehv.nl.


Thanks
------

Thanks to Ron Guilmette <rfg@monkeys.com> for providing copies of the
ANSI C and POSIX.1 standards.

Thanks to Kolja Elsaesser, Steffen Haecker
<haecker@mathematik.uni-stuttgart.de>, and Kai Uwe Rommel
<rommel@ars.de> for contributing code to the emx C library.

Thanks to Fred Tydeman <tydeman@tybor.com> for help with floating
point math and for testing the emx C library with his FPCE test suite
(blame me, not him, for all the problems found by the test suite and
not fixed yet).

Thanks to Holger Veit <Holger.Veit@gmd.de> for preparing the TCP/IP
header files and for providing information about DosProfile.

Thanks to Willem Jan Withagen <wjw@IAEhv.nl> for the emx mailing list.


The author
----------

The author of emx is

    Eberhard Mattes
    Teckstrasse 81                                      (TeX: Teckstra\ss e)
    D-71696 Moeglingen                                  (TeX: M\"oglingen)
    Germany

Internet: mattes@azu.informatik.uni-stuttgart.de  (subject to change)

No telephone calls please!  It must be stressed that the author does
not reply to letters if you don't include return postage
(international postal reply coupon if you are outside Germany) and a
self-addressed envelope.

Read \emx\doc\faq.doc before asking the author.

--------------------------- END OF README.DOC ------------------------------