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     For stuff that's not directly xv-related (3rd party utilities, etc), but
    really handy nonetheless, go here. 
     
    
    
        The official source distribution, gzip'ed
        (2.3MB) 
      - Contains full source for xv, including the manual (in PostScript), and the
        required versions of the jpeg and libtiff libraries. This is almost certainly the
        thing you want to download.
 
         
        Note: if you're going to try compiling this on RedHat Linux 6, READ THIS FIRST.  You'll
        be glad you did. 
     
    
        The official source distribution, compress'ed
        (3.5MB) 
      - Same as above, only for machines that (inexplicably) don't have gunzip
        installed on them.
 
     
    
        The official source
        distribution, split for floppies: Part 1, Part 2, Part 3 
      - The compress'ed version of the distribution, only split in 3 parts on 1.4MB
        boundaries, which allows it to be easily moved on floppies. For folks who are trying to
        install xv on machines that aren't connected to the Internet.
 
      -  
 
        Split distribution instructions 
      - Once you've downloaded the split version of the distribution, you'll probably need this
        to tell you how to reassemble the beast.
 
      -  
 
        xv for VMS - Readme! 
      - Information specific to the VMS version of xv 3.10a
 
      -  
 
        xv for VMS, '.zip' format (2.5MB)   
      - The official source distribution, tweaked by Rick Dyson to be easier to install on VMS
        machines. This is Rick's most-recently patched version (26-NOV-1997), and is known to work
        correctly (as far as he's seen) with Alpha/OpenVMS v7.1 and DEC C v5.6-003. 
 
     
     
    
    These binaries are a handy way to play around with xv and see if it's
    something that interests you.  Unfortunately, due to a lack of foresight, there's no
    way to Register any of these binaries (they'll always claim to be an 'unregistered copy').
      The practical upshot is that if you intend to register your copy(s) of xv
    (and by all means, please do!), you'll need to have a way to compile the source
    distribution on your machine.  Typically, this means you'll need an ANSI C compiler
    (such as gcc) and the X11 libraries ('libX11.a', et al) and include files.  
    For reasons I can't begin to explain, this is apparently a 'big deal' these days.  
    Didn't used to be! 
    Anyway, whenever XV 3.20 comes out (still working out the
    details on an LZW license), it will be possible to register the binaries.  Just so
    you know.  
        xv executables for NT Readme! 
      - Important Information about the NT version of xv.
 
      -  
 
        xv executables for NT, gzip'ed
        (2.1MB) 
      - You did read the important information above, right?
 
      -  
 
        xv executables for Solaris 2.5 on a SPARC, gzip'ed
        (1.2MB)  
      - I don't have a Sun, so I haven't personally tried this out, but this would be a simple
        painless way to check out xv on your SparcStation. Of course, you'll eventually
        need to be able to compile xv from source, so you can apply the patches below, or
        to register your copy, or whatever.  Read this to find out how
        to install this file.
 
      -  
 
        xv
        executables for HP-UX machines  
      - I don't have an HP, either, so who knows... Still, since apparently nobody can
        compile XV on an HP these days (where are the frickin' X11 include files, that's what I
        want to know!) it's better than the alternative.
 
      -  
 
        xv executable for SGI workstations (585KB)  
      - Unsurprisingly, I also find myself without a handy SGI workstation, so once again, I
        can't personally attest to the usefulness of these bytes. According to The Man, this binary runs
        peachy-keen on both IRIX 5.3 (Indy machines) and IRIX 6.3 (O2's). Note that this file is
        simply the executable, gzipped. Simply download, "gunzip", "chmod +x", and run it.
 
      -  
 
        xv RPM file for RedHat Linux (i386) 
        (1.1MB)  
      - Linux is one of the few Unix-y systems that still supplies all the stuff you need to be
        able to compile xv, and there's no real trickery involved.  Just tell the
        Makefile where to find the X11 libs & includes, and 'make'.  Still, Linux is
        gaining in popularity, and is no longer solely the domain of C programmers - there's some
        actual users out there as well.  Hence this RPM file - no pesky compilation
        required.  Note: this RPM is from the RedHat 5.2 ftp distribution.  I don't know
        for certain that it will work on earlier versions of RedHat, though by gum, it's certainly
        worth a shot!
 
     
    
     
    
    
        The xv manual, compress'ed PostScript version (1.0MB) 
      - This is part of the official distribution, but there seem to be lots of folks out there
        who don't have it, or don't know how to extract it from the distribution, so it's
        presented here unbundled.
 
      -  
 
        The xv manual, PDF version (1.0MB) 
      - Converted to PDF from the PostScript version by Tobi Delbrook.
 
      -  
 
       The xv manual, in HTML (460KB)   
      - A gzip'ed tar file that contains a complete version of the xv 3.10a manual in
        HTML, As Seen On These Pages! Perfect for mirroring the documentation at your own site.
 
     
    
     
    
    Note: None of the following patches have been pre-applied to the distributions
    listed above, for really good reasons that I don't want to get into. You'll probably want
    to use Larry Wall's excellent patch program to
    apply the patches. Certainly that's what you're supposed to do, though of course
    it's perfectly possible to apply the patches by hand (as nosy/paranoid folk such as myself
    tend to do). 
     
    Recommended Patches (ie, bug fixes)
    
        Patch to fix Grab problems 
      - This patch fixes a potential problem with the Grab command. On some
        systems, you may find the Grab command going 'out-to-lunch', or maybe it
        returns, but doesn't appear to have done anything. This patch should probably be
        applied on all systems, even if they don't exhibit the problem, as it may be
        WM-dependent.
 
      -  
 
        Patch to fix Visual-picking problem 
      - On certain Sun systems with 24-bit framebuffers, xv displays images very dimly.
        The problem is that Sun provides two identical Visuals with different gamma correction
        curves, for different types of hardware. Guess what popular Unix image display program
        picks the wrong one. This patch can be applied on all systems, though it won't gain you
        anything on any other system.
 
      -  
 
        Patch to read & display multi-page TIFF files 
      - A cool one: like it says, this patch will let xv read and display multi-page
        TIFF files. Multi-page TIFF files work just like multi-page PostScript files: you use <PageUp>
        and <PageDown> to page through the file, and p
        brings up a "go to page #" dialog box. Note that this is a patch to the standard
        xv 3.10a distribution - it may or may not work in combination with the libtiff
        3.4 patch.
 
      -  
 
        Patch to keep xv from crashing on Really Long
        Filenames  
      - If you have some big-ass filenames (32 chars or longer) you may run into cases where xv
        will segfault in the Visual Schnauzer or in certain pop-up dialog boxes. This
        patch fixes this problem. Note that this only applies to files whose base filename (with
        the leading path info chopped off) is 32 chars or longer. That's why this bug probably
        hasn't bit you. (It obviously never bit me!)
 
      -  
 
        Patch to fix XPM file output errors 
      - By cleverly harnessing the amazing power of a missing 'break' statement, xv was
        writing XPM files with a FITS version of the image conveniently tacked on the
        end. Hilarity ensues.
 
      -  
 
        Patch to Image display on certain 12-, 15-, or 16-bit
        X Displays 
      - A byte-ordering problem would come into play when displaying 8-bit colormapped images on
        certain systems.  While it's rare to run into this bug (as most people are running
        either 8 or 24/32-bit graphics these days), it's still a bug.  Thanks to Mr. Ryo
        Shimizu for finding it (and more importantly, fixing it)!
 
      -  
 
        Patch to GIF-reading code 
      - While I can't say that I've ever seen the results of this bug (obviously, or I
        would have fixed it), it's a bug nonetheless.  The bug could show up when viewing
        multiple interlaced GIF files in one run of XV, as the de-interlacer is not properly
        reinitialized on subsequent runs.  Thanks to Mark Hanson for finding it.
 
       Patch to fix non-functional grab on some X servers   
      - xv would rather rudely fail to Grab (or display certain XWD files) on systems
        running the eXceed X server in 24-bit mode.  The Grabs would return
        a correctly-sized, but completely blank image.  This patch may well fix Grab problems
        on other systems (and if so, I'd like to hear about it), and should not break anything.
          As such, it's recommended for all users.  Thanks to Nadim Saeed for his
        efforts in squishing this bug.
 
      -  
 
       READ THIS to compile XV on RedHat 6, and most other
        newer Linux distributions   
      - It's not a patch per se, it's just something that'll tell you something important to
        know about compiling xv on RedHat Linux 6.0 (and presumably on all newer
        releases).  This same advice may stop xv from compiling on other systems, so
        don't take this as a generally-useful tidbit that everybody should use.  It isn't.
 
      -  
 
       Patch to compile XV on BeOS   
      - So you want to run everybody's favorite Unix image viewin' program, but you've got this
        newfangled BeOS thing a-sittin' on your desk.  No problem!  Thanks to David
        Powell, you can now compile and run XV 3.10a on BeOS.  And then send me $25.  
        :-)
 
      -  
 
       Patch to fix TIFF files being written at 1200dpi   
      - For whatever insane reason, the xvtiffwr.c module writes all TIFFs out with resolution
        tags of 1200dpi. This leaps up and bites you on the ass when you load the resultant TIFF
        files into a program (such as Photoshop) that actually pays attention to said tags.
 
         
        This patch simply writes all TIFF files with a resolution of 72dpi, a far more reasonable
        value. 
      -  
 
        SECURITY PATCH for Postscript Files.   
      - Jon Luckey has pointed out that certain malicious
        PostScript files could write and/or delete user files.  This is particularly
        dangerous if you use xv to display certain email attachments.  While most
        folks know not to run unknown executables received in email, they probably don't realize
        that PostScript files can also be dangerous.  Surprised the hell out of me, at any
        rate.
 
         
        This patch fixes xv's call to ghostscript such that it has the
        "-dSAFER" flag turned on, which should prevent such shenanigans. 
     
     
    Optional Patches (ie, enhancements)
    
        Patch to use Version 6 of the JPEG library 
      - You need this trivial patch if you intend to link xv with version 6 of the Independent
        JPEG Group's JPEG library. This is a newer version of the library than is included in the xv
        3.10a distributions listed above. You need the new library to read Progressive JPEG files.
 
      -  
 
        Patch to use Version 3.4 of the TIFF Library 
      - You need this patch if you intend to link xv with version 3.4 of Sam Leffler's
        TIFF library. This is a newer version of the library than is included in the xv
        3.10a distribution, and probably does something good. (I haven't tried it out.)
 
      -  
 
        Patch to read/write PNG files. 
      - The patch to xv 3.10a, and other needed files (libpng and
        zlib) all live on this site. I
        haven't tested any of this personally, so I don't know what-all's involved here, but
        presumably everything you need to know is up here.  Finally, you'll need to apply this patch 
 on top of everything else to fix some minor nits
        introduced by newer versions of the libpng libary. Sorry about that. 
         
        (Thanks to Greg Roelofs (newt@pobox.com) and
        Daniel Thayer (dnthayer@uiuc.edu)  for
        the updated PNG info!) 
         
        BTW, for what it's worth, as soon as I can work out some sort of arrangement with Unisys,
        I fully intend to release 'xv 3.20', which will come with all these accursed patches
        pre-applied (and some other goodies).  Won't that be fun!?! 
      -  
 
        Patch to 'read' PDF files.   
      - According to all-around good guy Bitt Faulk, newer
        non-GNU/FSF versions of ghostscript can read PDF files. Therefore, it's just a
        trivial patch to get xv to recognize PDF files as something useful, and pass them
        off to ghostscript, just like PS files are currently handled.
 
      -  
 
        Patch to use XV as a Netscape plugin.   
      - Contributed by David Meleedy, this patch
        adds a '-windowid #' command-line option to xv, which was previously sorely
        lacking in command-line options. In any event, the practical upshot of all this is that
        you can use xv in conjunction with Plugger 3.2 to turn it into a Netscape
        plug-in.  
 
         
        Why would you want to do that, other than to win some sort of bet?  Well, the big
        deal is that by doing this, you can now get Netscape to display non-standard image formats
        (TIFF, Rasterfile, PNG, etc.) right in a Netscape window, which is certainly cooler than
        downloading them and firing up xv manually.  You can even have a
        fully-functioning xv, schnauzer and all, running right inside a Netscape window.
          (Though I dare anyone to come up with a legitimate sporting purpose for that!) 
         
        Read David's README
        for futher details. 
      -  
 
        Patch to read 32-bit-per-pixel BMP files.   
      - Apparently such beasts exist these days.  (They didn't back when I originally wrote
        the BMP i/o module.)  Presumably the extra 8 bits are for an alpha channel, which xv
        will completely ignore.  Still, better'n nothing.
 
     
    
     
    xv 3.10 upgrade patch
      Patch to upgrade xv 3.10 to 3.10a 
    
      xv 3.10 was distributed (by me) for less than a month before the 3.10a bug-fix
      release came out. Amazingly, I still hear from folks using the 3.10 original release.
      Anyway, you only need this patch if you're running the original 3.10 release. If you've
      got 3.10a already, ignore this. 
     
    
     
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