[oi-dev] Please, review vnc work

[Alexander Pyhalov]

Hello.

Last week I worked on rebuilding Xvnc. This is neccessary, because it 
depends on perl 5.10 (vncserver script is written in perl).
I've updated it to the last version (1.1.0) from Oracle XNV 
(x-s12-clone) gate.
The vnc itself is tigervnc, which consists from vnc modules and patches 
to X server, which is built and delivered as Xvnc.
So, I created separate components/x11/xorg-server  component. It's not a 
full component, just a helper component to patch Xorg to the state which 
we have in OI XNV gate.
These sources are patched further with vnc patch 
(components/x11/tigervnc/patches/tigervnc-xserver17.patch) and used to 
build Xvnc.
I think in the future when we have to rebuild Xorg itself, this 
component (x11/xorg-server) can be promoted to the full component.

One unfortunate issue - I couldn't make Xvnc work with any gcc 
optimization turned on. Vnc server fails to add vnc display if I turn on 
even just "-O". So, optimization is turned off.
Side note: working xvnc component can be compiled with Studio (just set 
COMPILER to Studio) with "-x04". Don't know, why this issue arises.

I had to create gdm and libXdmcp components to debug strange issue with 
XDMCP server. By default svc:/application/x11/xvnc-inetd:default 
connects to local XDMCP server
(served by gdm). And this XDMCP server just doesn't work on recent 
illumos if gdm is compiled with ipv6 support (and out gdm from JDS is). 
It is caused by https://illumos.org/issues/4838 .
Dan McDonald has already created a working fix for this issue. I think 
we'll see it in illumos-gate soon.

So, please, review
https://github.com/pyhalov/oi-userland/compare/oi;hipster


-- 
System Administrator of Southern Federal University Computer Center