User talk:Sylvain

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crontab on MacOS

  • Example
crontab -e
00 20 * * * ctest -S myScript.cmake > myScript.log 2>&1
  • Problem:

When I create a cronjob with

crontab -e

I get the error message:

crontab: temp file must be edited in place
  • Solution:

Use the 'nobackup' option in VI:

:set nobackup
:set nowritebackup

crontab: installing new crontab

Install X11 on MacOS

To install ParaView-2.4.4, you need to install X11.

  • Insert 'Mac OS X Install Disc 1'
  • Scroll down to 'Optional Installs'
  • Click 'Continue', 'Continue', 'Accept'
  • Select 'Applications', click on the arrow in front of Applications
  • Select 'X11'
  • Click 'Upgrade', enter your password, click 'Ok'

Setup CMake for ICC

To configure a project to use the Intel compiler icc, set CC and CXX *before* you run cmake. Type is the terminal:


Then run cmake or ccmake.

Headers for Cross-platform Projects

 #include <stdio.h>  // for sscanf

Install Qt OpenSource for VCExpress (VS2005)

  • Install VCExpress AND Platform SDK

  • Using Windows Unzip, extract and to c:/qt/qt-win-opensource-src-4.2.2'ed_Qt_for_Windows

  • Edit C:\Program Files\Microsoft Visual Studio 8\Common7\Tools\vsvars32.bat
  • Add path to Platform SDK bin, include and lib:
 C:\Program Files\Microsoft Platform SDK for Windows Server 2003 R2\Bin
 C:\Program Files\Microsoft Platform SDK for Windows Server 2003 R2\Include
 C:\Program Files\Microsoft Platform SDK for Windows Server 2003 R2\Lib
  • Launch Cygwin.exe, and apply the following patch
 patch -p1 -i qtwin_patch\msvc_bcc32_42.patch
  • Launch Start > All Programs > Visual C++ Express Edition > Visual Studio Tools > Visual Studio 2005 Command Prompt
  • cd ..; cd qt; cd qt-win-opensource-src-4.2.2
  • Configure Qt and answer yes to all questions
qconfigure.bat msvc2005
  • Configure ParaView3 using CMake; Compile using MSVC2005

Install Qt OpenSource for Mac

  • Build for Debug
cp -r qt-mac-opensource-4.2.2 ~/qt-4.2.2-debug
cd ~/qt-4.2.2-debug
./configure -debug -prefix /usr/local/qt-4.2.2-debug
sudo make install
  • Build for Release
cp -r qt-mac-opensource-4.2.2 ~/qt-4.2.2-release
cd ~/qt-4.2.2-release
./configure -prefix /usr/local/qt-4.2.2-release
sudo make install

Change shell in Debian

type your password
logout and login again.
set up the .zshrc file.
in your .zshrc, add:

Associate hostname with IP address for SSH

  • Dynamic way:

Add in /etc/dhcp3/dhclient.conf

 send host-name "<your_host_name>";
  • Static way: (not as good)

Add IP address and hostname in /etc/hosts (Linux) or C:/WINDOWS/system32/drivers/etc/hosts (Cygwin):          # source server              # x client host
  • On Debian, install openssh-server

SSH without password

Add to .ssh/config

 Host <remote_host_name>
   User <your_user_name_on_remote_host>

Debian Setup


boot: expert
Primary network interface: eth0: ADMtek NC100 Network Everywhere Fast Ethernet 10/100
single partition
Install the kernel linux-image-2.6-686
Debian mirror: France -
Use non-free software
Choose software to install:
Desktop environment
Web server
SQL server (forgot to do that one!)
Standard system

If you install Debian in standard mode, add edit

/etc/apt/sources.list lenny main contrib non-free deb

BuGLe setup on Debian

mkdir ~/.bugle
cp ~/bugle-0.0.20070217/doc/examples/filters ~/.bugle

Run bugle:

BUGLE_CHAIN=trace LD_PRELOAD=/usr/local/lib/ glxgears

Look at /tmp/bugle.log

Debugger from command line and debugger with GUI:

gldb glxgears
gldb-gui glxgears

VI setup

Install package vi-gtk Edit your ~/.vimrc

colorscheme torte

Create a plugin directory if it does not exist:

mkdir ~/.vim
mkdir ~/.vim/plugin

Download the a.vim into the plugin directory

Restart gvim.

VI Convert tabs to spaces (copied from

Type a VI command using ':set'

Set tabs to every 2 characters  	:set ts=2
Convert tabs to spaces in future 	:set et
Do not expand tabs 	                :set noet
Fix existing tabs (convert to spaces) 	:%retab
Show tabs visually, and end-of-lines 	:set list
Do not show tabs and end-of-lines 	:set nolist

Or add those commands to your ~/.vimrc

set textwidth=78  "wrap lines longer than this length
set tabstop=2     "tabs stops every 2 characters
set shiftwidth=2  "size of a tab
set expandtab     "tabs to spaces

Building CMake on Debian

Install curses

apt-get install curses5-dev

Debian package for dos2unix

apt-get install tofrodos

Build VTK for Release

To create an executable that contains all the libraries, so you don't need to ship the dlls with it: CMake options:

Build Static
Replace /MD with /MT

VC Express options:

Build Release

Mount on Linux using Samba

1. Create mount points .

mkdir /mnt/nas2 /mnt/ruwenda /mnt/nas3

2. add the following lines to your /etc/fstab file :

//kitwarenas2/Share /mnt/nas2    smbfs   defaults,guest,rw     0       0
//ruwenda/E         /mnt/ruwenda smbfs   defaults,guest,rw     0       0
//kitwarenas3:/Share /mnt/nas3 nfs     rw,user,exec,noauto         0       0

3. Mount each of them as

mount /mnt/nas2

Restore Wiki page

History > Compare versions > Undo > Save page

Build VTK with Offscreen Rendering on Linux

OSMesa (Off Screen Mesa) is a library that does rendering and does not need a graphics context. You can use it on a server that does not have a graphics card or any graphics capability. To use VTK with OffScreen Rendering on Linux, you need to compile VTK with the OSMesa option on.

Configure VTK using CMake.
Hit 't' for Advanced Options
Hit 'c' to configure again.
Set path to include dir and library:
Turn VTK_USE_OFFSCREEN ON if you want offscreen by default.

If you built Mesa from source and link to it, your dependencies should be ok. If you installed the OSMesa packages for Debian and did not build VTK from scratch, your dependencies might be messed up. Then once you have configured your CMakeLists.txt, check that this CMakeLists.txt variable is set to zero, and then type make:


On Debian, I installed:


To check if Mesa was installed correctly, you can type in a terminal:

$ glxinfo | grep renderer
OpenGL renderer string: Mesa X11

It should return the line above. In case you get the Nvidia drivers for example, then Mesa was not installed correctly. To get info about OpenGL libraries used by a VTK 6.0 build, you can use the test LoadOpenGLExtensions.

When you run your VTK code with Mesa, you can turn offscreen rendering on in your application:


and no render window will pop up.

To generate screenshots, use:


Install Nvidia drivers for Debian Testing 2.6.21

apt-get install gcc linux-libc-dev x-dev libxt-dev mesa-utils

The Linux Nvidia drivers from *fails* for Debian Testing 2.6.21: I got ERROR: Unable to build the NVIDIA kernel module. Then I follow this:

apt-get install libc-dev linux-headers-$(uname -r)
login: root
killall gdm
sh ./ -k $(uname -r)
Please read the following LICENSE... Accept
No precompiled kernel...? Yes
No matching precompiled kernel...? Yes

glxinfo and glxgears packages

apt-get install mesa-utils useful packages: vim-gtk g++

Change runlevel on Debian

My system has to start on runlevel 3.

vim /etc/inittab
# The default runlevel