This is a port of mpeg2dec to MSDOS/DJGPP.

1.:     DJGPP specific changes.
        =======================

        There are no DJGPP specific changes to the sources.  To avoid a 8.3
        file name collision between libmpeg2.[a|la] and libmpeg2convert.[a|la]
        the later has been renamed to libmpg2convert.[a|la].  As for all
        binaries and libraries that handle images of any kind, it should be
        noticed that files (streams) are *always* openend in binary mode with
        all the well known implications on a DOS/WINDOWS OS if the stream is
        connected to STDIN and/or STDOUT when these are still connected to
        the console.

        To configure and compile the sources you will need LFN support.  This
        means that you can only unzip and build the binaries on an OS that
        offers LFN support like Win9X, WinXP, etc.  There will be no support
        for the building on plain DOS by me.  IMHO this is not worth to be done
        nowadays if the amount of work exceeds certain limit.
        Of course, the distributed and/or build binaries and libraries will
        *always* work on plain DOS.


        Please *read* the docs stored in /contrib/mpeg2dec.041/doc.


2.:     Installing the binary package.
        ==============================

2.1.:   Copy the binary distribution into the top DJGPP installation directory,
        just unzip it preserving the directory structure running *ONE* of the
        following commands:
          unzip32 mpg2041b.zip      or
          djtarx mpg2041b.zip       or
          pkunzip -d mpg2041b.zip



3.:     Building the binaries from sources.
        ===================================

3.1.:   Create a temporary directory and copy the source package into the
        directory and just unzip it preserving the directory structure running
        *ONE* of the following commands:
          unzip32 mpg2041s.zip      or
          djtarx mpg2041s.zip       or
          pkunzip -d mpg2041s.zip

3.2.:   To build the binaries you will need the following binary packages:
          djdev203.zip (or a later but NOT a prior version)
          bsh204b.zip  (or a later but NOT a prior version)
          gccNNNb.zip, gppNNN.zip, bnuNNNb.zip, makNNNb.zip, filNNNb.zip,
          shlNNNb.zip, txtNNNb.zip, txiNNNb.zip, grepNNNb.zip, sedNNNb.zip.

        If you want to run the check you will need also:
          gwkNNNb.zip

        NNN represents the latest version number of the binary packages. All
        this packages can be found in the /v2gnu directory of any
        ftp.delorie.com mirror.
        You will need bsh204b.zip or later and *NOT* a prior version or
        the build will fail.  The same applies to djdev203.zip.

3.3.:   If for some reason you want to reconfigure the package cd into the top
        srcdir (mpeg2dec.041) and run the following commands:
          del djgpp\config.cache
          make clean
          djgpp\config

        Please note that you *MUST* delete the config.cache file in the djgpp
        subdir or you will not really reconfigure the sources because the
        configuration informations will be read from the cache file instead
        of being newly computed.
        To build the programs in a directory other than where the sources are,
        you must add the parameter that specifies the source directory,
        e.g:
          x:\src\gnu\mpeg2dec.041\djgpp\config x:/src/gnu/mpeg2dec.041

        Lets assume you want to build the binaries in a directory placed on a
        different drive (z:\build in this case) from where the sources are,
        then you will run the following commands:
          z:
          md \build
          cd \build
          x:\src\gnu\mpeg2dec.041\djgpp\config x:/src/gnu/mpeg2dec.041

        The order of the options and the srcdir option does not matter.  You
        *MUST* use forward slashes to specify the source directory.

        The batch file will set same environment variables, make MSDOS specific
        modifications to the Makefile.in's and supply all other needed options
        to the configure script.

3.4.:   To compile the package run from the top srcdir the command:
          make

3.5.:   Now you can run the tests if you like.  From the top srcdir run the
        command:
          make check

        Actually only one test will be run and the other two will be skipped.

3.6.:   To install the binaries, header, library, catalogs, and man pages
        run the following command from the top srcdir:
          make install

        This will install the products into your DJGPP installation tree given
        by the default prefix "/dev/env/DJDIR".  If you prefer to install them
        into some other directory you will have to set prefix to the appropiate
        value:
          make install prefix=z:/some/other/place



        Send mpeg2dec specific bug reports to libmpeg2-devel after having
        subscribed to the list at <http://libmpeg2.sourceforge.net/lists.html>
        Send suggestions and bug reports concerning the DJGPP port to
        comp.os.msdos.djgpp or <djgpp@delorie.com>.


Enjoy.

        Guerrero, Juan Manuel <juan.guerrero@gmx.de>
