This is a port of GNU diffutils 3.3 to MSDOS/DJGPP.

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

      - The port will honor the DOS environment variables TMP and TEMP if
        TMPDIR is not set or not accessible.
      - The port will select at run time the pattern to be used when temp
        file name are created.  If LFN support is available then the standard
        pattern, this is "sdiffXXXXXX" will be used.  IF only SFN support is
        available then "dfXXXXXX" will be used.
      - This port will strip the extension from argv[0].


        All the changes done to the original distribution are documented in the
        diffs file and located together with all the files needed to configure
        the package (config.bat, config.sed, config.site, etc.) in the /djgpp
        subdir.  There exist a /ms subdir that contains files to configure and
        build the package.  This is part of the original FSF diffutils source
        distribution. I have never inspected nor used those files, so I will
        not be able answer questions if you decide to use it.



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

2.1.:   Copy the binary distribution into the top DJGPP installation directory
        and unzip it running one of the following commands:
          unzip32 dif33br2.zip      or
          djtarx dif33br2.zip       or
          pkunzip -d dif33br2.zip

2.2.:   If there is no entry for the gzip info docs in your dir file, located
        info directory, create one running the command:
          install-info --info-dir=/dev/env/DJDIR/info /dev/env/DJDIR/info/diffutils.info

        For further information about GNU diffutils please read the info docs,
        man pages and the README, NEWS and ChangeLog files.


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

3.1.:   To build the binaries you will need the following binary packages:
          djdev203.zip (patch level 2, see the djdev203.dsm)
          bsh205bbr3.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.

        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.  Previous versions of those packages may do the
        job as well but I have not tested this.
        You will need bsh204br3.zip or later and *NOT* a prior version or
        the build will fail.  The same applies to djdev203.zip.

3.2.:   Create a temporary directory.  Copy the source package: dif33s.zip
        into the directory and unzip it running one of the following commands:
          unzip32 dif33sr2.zip      or
          djtarx dif33sr2.zip       or
          pkunzip -d dif33sr2.zip

3.3.:   The package has been configured for both DJGPP 2.03 and DJGPP 2.04.
        There is a separate build directory for DJGPP 2.03 and for DJGPP 2.04
        under the top srcdir (aka diffutil.3-3).  To build the binaries
        using the 2.03 version of DJGPP cd into _build.203; if you prefer to
        build the binaries using DJGPP 2.04 cd into _build.204.  If for some
        reason you want to reconfigure the package cd into the corresponding
        build directory and run the following commands:
          del 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.

        config.bat, among other things, will start the configure script passing
        to it a couple of arguments.  You can control these argument passing the
        following command line arguments to config.bat:
          nls or no-nls, default no-nls.  No NLS support.
          cache or no-cache, default cache.
          dep or no-dep, default no-dep.  No dependency tracking.
          silent or no-silent, default silent.  Controls the verbosity of the
                                                build process.
        All other configure specific options are not controled by config.bat so
        they are passed verbatim to the configure script if they are supplied.
        If no arguments are passed to config.bat then the default values are
        used.


        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\diffutil.3-3\djgpp\config x:/src/gnu/diffutil.3-3

        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\diffutil.3-3\djgpp\config x:/src/gnu/diffutil.3-3

        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 directory where you have configured
        the sources the command:
          make

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

        No test should fail for the 2.04 port.  The 2.03 port will fail for
        the no-dereference test.  This test requires symlink support that is
        not available for DJGPP 2.03.

3.6.:   To install the binaries, and info docs 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 appropriate
        value:
          make install prefix=z:/some/other/place



        Send diffutils specific bug reports to <bug-diffutils@gnu.org>.
        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>
