Hmm...   That may be my problem.  I have been trying to build against 7.5 or the git repo.  I haven't tried 7.4 since before the TLS stuff was officially added.  I will try 7.4 again and post my results.  Noticed the typo in the last email.  I meant TigerVNC of course....  

Robert


On 09/30/2010 12:40 PM, DRC wrote:
Me too!  That is why I'm willing to work on the CMake system.  I haven't
yet been able to successfully build the Windows code myself, except for
just VNCViewer (which is painful because of all the MinGW dependencies.)

As far as building on Lenny, I'm surprised that using build-xorg doesn't
work for you.  That method, when used with the Xorg 7.4 code base,
should be backward compatible all the way back to RHEL 4 and its
contemporaries (Ubuntu 6, etc.)

On 9/30/10 8:46 AM, Robert Goley wrote:
 I realize it would never completely replace autotools. I was just
hoping for wrapper that would work a bit better.  I haven't had that
much luck with compiling TigerVNC on Lenny yet.  The client stuff works
fine but even compiling the whole Xorg tree for dependencies has not
worked yet...  May have just been my frustration coming thru...  The
Windows platform is next on my list and history tells me it never plays
nice (MSVC or MinGW).  I really want to start working with TightVNC's
TLS connections.  I applaud the work all the developers have done and
look forward to when I can actually get to use it.

Robert


On 09/30/2010 01:25 AM, DRC wrote:
I didn't say that SCons didn't work great on Windows.  I just said that
it was my impression that CMake was more "Windows-friendly."  By that, I
mean it has full support for generating IDE projects and doesn't require
external dependencies like Python, etc.  I thought the link from the
SCons wiki was a pretty good summary of the trade-offs.

Realistically, we're never going to be able to remove autotools from the
Unix/Linux build, because autotools is necessary to build Xorg.  Thus, I
don't see the point in trying to unify the build system across Windows
and Unix.  We already have that in our existing build system, which
requires using MinGW to build Windows binaries.  However, that system
ironically works a lot better on Linux than it does on an actual Windows
machine (see
http://www.mail-archive.com/tigervnc-devel@lists.sourceforge.net/msg00649.html),
and it requires using an unsupported patch to MinGW in order to build
WinVNC.

I don't think that it will be that difficult to implement the CMake
system in TigerVNC, since I am implementing it in TurboVNC and
libjpeg-turbo first.  I'll be able to leverage a lot of that existing work.

On 9/29/10 5:20 PM, Robert Goley wrote:
  I am not sure on the visualization stuff or what you mean by it 
exactly.  KDE moved to SCons initially and then to CMake because they 
wanted custom changes and we not getting results as fast as they liked.  
I haven't seen anything that would require a custom change in SCons 
myself.  It does work great on Windows though.  Not sure where you got 
the idea it didn't.  It was actually one of the first places I had to 
use it.  It does require Python to be downloaded but Python is available 
and works fine on Windows.  It also has functionality to create MS 
Studio Projects as well though this functionality may be limited in some 
areas.  I am more of a command line or automation type of guy for my 
build systems but have used some of the MS project generation pieces.  I 
guess everyone has their preferences though.  Thanks for taking a look 
at it and responding so quickly.  My offer still stands on helping with 
a SCons based build system.  I can't offer the same help with the CMake 
system though.  I will be glad to see an improvement in the build system 
either way though.  I would love to be able to get it to compile on 
Debian Lenny with one build command though I know Windows is your focus.

Robert


On 09/29/2010 05:40 PM, DRC wrote:
I've looked at SCons cursorily.  The original reason why I started
looking at CMake was that I'm a visualization guy, and CMake has a lot
of traction in that community (that's where it came from originally.)
More generally, however, my (perhaps incorrect) impression is that there
seem to be more projects moving to CMake than SCons (including some
heavy hitters, like KDE), and it seems that CMake is more
Windows-friendly.  I like the idea of users being able to generate
Visual Studio project files and then use the Visual Studio IDE to
compile their project if they so desire.  Most Windows developers are
comfortable with this model.  Personally, I'm more of a command line
guy, so I like using Makefiles, but this gives us the option to support
both environments without supporting multiple build systems.  I don't
see any particularly compelling reason to move the Unix code off of
autotools, so really what we're looking for is what provides the best
solution for Windows native development.  CMake is a self-contained
executable, i.e. it doesn't require Python (which isn't available on
Windows systems), and thus it seems to be the most straightforward
solution.  The common view is that it's also faster, for the same reason.

Interesting perspective here:
http://www.scons.org/wiki/SconsVsOtherBuildTools#head-3d0faf3f1d4d3b73f31eaa0ba97d4df18a474369

On 9/29/10 3:11 PM, Robert Goley wrote:
   I would be glad to see a better cross platform build system.  I have
done some work with CMake in the past and with SCons.  I found Scons to
be a better system overall.  One of the big selling points of it for me
was that it literally replaced the native systems make command and
launched the compiler and linker directly instead of wrapping them.
This seemed to allow for better concurrent object compiling with
multiple processors/cores.  I saw my compile times cut in have comparing
it to GNU make's -j option with the same number of processors.

Have you looked into SCons at all?  I know this is just my 2 cents but I
certainly would be willing to help with a SCons based build system.
What are your thoughts?

Robert


On 09/29/2010 03:50 PM, DRC wrote:
I've been getting my hands dirty with CMake in recent weeks, and I now
firmly believe that's the way to go with respect to a Windows build
system for TigerVNC.  I don't propose replacing autotools (at least for
now), but CMake allows one to generate their own build system based on
NMake or Visual Studio projects or even MinGW, and it works with 64-bit.
   People can still use MinGW and autotools to build TigerVNC if they
want, but this gives native Windows developers a viable option for
working with our code that doesn't require compiler customizations.

The intermediary step is for me to implement a CMake system for Windows
builds of libjpeg-turbo, and adding the system to TigerVNC should be
straightforward after this is done.

Since this is currently unfunded work, I can't give a timeframe as to
when I might be able to complete it, but I believe that it needs to be
part of 1.1.


On 9/16/10 4:15 AM, Adam Tkac wrote:
On Thu, Sep 16, 2010 at 03:14:02AM -0500, DRC wrote:
Once I can successfully get a static build going on RHEL 4 (still having
problems with the lack of gnutls_transport_set_global_errno), I'll look
into these issues.  libgcrypt and libgnutls are definitely not
cross-compatible, so the -static switch to build-xorg will probably have
to accommodate those libs as well as the others.

I'm hoping that the new Xorg 7.5 patches you just checked in will
eliminate the build issue I had previously that was preventing me from
using Xorg 7.5.  If so, I will generate a static Xvnc binary and look
into linking statically with gnutls.  I then want to try out the
security features to make sure they behave like I expect, and I'll be
cool with releasing the alpha at that point.

What is the situation with respect to doing Windows builds?  I have
never successfully managed to build WinVNC.  Did those patches ever make
it into a release of MinGW?
My MinGW patch isn't accepted, yet. And I'm not sure if it will be
accepted:
https://sourceforge.net/mailarchive/message.php?msg_name=AANLkTikg0hAGpArLTqFSWn6IdSI5aNOwJk-3ZDl4rqrq%40mail.gmail.com

I'm going to merge my "vcstudio_buildsys" branch to trunk so it should
be possible to build winvnc with both MSVC and MinGW.

Regards, Adam

On 9/15/10 9:06 AM, Adam Tkac wrote:
Hello,

as you might have seen I performed build-xorg improvements
and it is now possible to build Xvnc via those scripts. In my opinion
prebuilt Xvnc will be built with this script so it's good time to
discuss remaining issues.

"Statically" linked Xvnc now contains references for following
libraries:

$ readelf -a ./Xvnc |grep NEEDE
   0x0000000000000001 (NEEDED)             Shared library: [libpam.so.0]
   0x0000000000000001 (NEEDED)             Shared library: [libgnutls.so.26]
   0x0000000000000001 (NEEDED)             Shared library: [libgcrypt.so.11]
   0x0000000000000001 (NEEDED)             Shared library: [libdl.so.2]
   0x0000000000000001 (NEEDED)             Shared library: [librt.so.1]
   0x0000000000000001 (NEEDED)             Shared library: [libm.so.6]
   0x0000000000000001 (NEEDED)             Shared library: [libc.so.6]
   0x0000000000000001 (NEEDED)             Shared library: [ld-linux-x86-64.so.2]
   0x0000000000000001 (NEEDED)             Shared library: [libpthread.so.0]

Everything except libgnutls.so.26 is present on old systems (i.e. RHEL4&   friends)
so we must decide what to do with libgnutls. Although I'm not friend
of static linking it seems we have to link Xvnc statically against
libgnutls to avoid compatibility issues.

I also created two patches which add -dridir and -xkbcompdir
parameters to Xvnc. Those parameters should be determined same way as
-fp parameter in vncserver script and passed to Xvnc.

After vncserver gets improved UNIX code is ready for the alpha
release, in my opinion.

Regards, Adam

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