This is a port of JasPer 1.900.1 to MSDOS/DJGPP.

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

        The release of this port fixes bugs reported at debian if they are
        djgpp specific too.  The debian patch that has been adapted to this
        release of the djgpp port fixes segfaults due to heap corruption on
        malformed image input.  It is available at:
          <http://ftp.de.debian.org/debian/pool/main/j/jasper/jasper_1.900.1-3.diff.gz>
        There are no other changes to the sources except for those needed to
        solve SFN issues on plain DOS.  Only the usual configuration files
        have been added.  They are located in the /djgpp subdir.  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 a DOS box of 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.

        To use and compile from sources this library you will have to install
        the zlib and jpeg or ljpeg libraries.
          
        Please *read* the docs located in /jasper-1.901/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 jas1901b.zip      or
          djtarx jas1901b.zip       or
          pkunzip -d jas1901b.zip



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

3.1.:   Create a temporary directory and copy the source package into the
        directory.  If you download the source distribution from one of the
        DJGPP sites, just unzip it preserving the directory structure
        running *ONE* of the following commands:
          unzip32 jas1901s.zip      or
          djtarx jas1901s.zip       or
          pkunzip -d jas1901s.zip

3.2.:   To build the binaries you will need the following binary packages:
          djdev203.zip (or a later but NOT a prior version)
          bsh205b.zip  (or a later but NOT a prior version)
          gccNNNb.zip, gppNNNb.zip, bnuNNNb.zip, makNNNb.zip,
          filNNNb.zip, shlNNNb.zip, txtNNNb.zip, txiNNNb.zip,
          grepNNNb.zip, sedNNNb.zip, pngNNNb.zip and zlibNNNb.zip
        where NNN stands for the latest version of that package.

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

        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.  All the
        other packages are the ones I have used to build the binaries
        from this source.  Previuos versions of this packages may do the
        job as well but I have not tested this.

3.3.:   If for some reason you want to reconfigure the package cd into the top
        srcdir (jasper-1.901) and run the following commands:
          del djgpp\config.cache
          make distclean
          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\contrib\jasper-1.901\djgpp\config x:/src/contrib/jasper-1.901

        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\contrib\jasper-1.901\djgpp\config x:/src/contrib/jasper-1.901

        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.:   To install the binaries, header, library, catalogs, 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 appropiate
        value:
          make install prefix=z:/some/other/place



        Send jasper specific bug reports to <mdadams@ece.uvic.ca>.
        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>
