I couldn’t find anything directly, and had to get a little (or a lot) of help from XWolf and Falcon4ev on IRC to get this working, so I thought I’d post my notes on how to build touchlib for Ubuntu Fiesty:

I found that I got some errors about libavcoded and libavformat were the wrong versions.  I had installed blender2.43, which apparently used a different version of these libraries for ffmpeg.  Once I removed blender (sudo apt-get remove blender), the install of libcv1 and libcv-dev worked fine.

Once all of the dependencies have been installed, next download the source code, generate the makefile and compile:

Thats the short of it.  As I make more progress, I’ll try to keep this thread updated.

Everything should go smoothly at that point… If not, check #FTIR on irc.freenode.net.

(2007-06-08 22:41 MST - Revised to fix some typos and missing dependencies)

tnx for adding this irish, ubuntu seems to be pretty hot lately, so i bet this will be usefull to quite a few people who want to get into multitouch with linux/ubuntu

I followed the instructions here, plus installed the dependencies i found in the wiki, and i got an error compiling

Maybe you are using a previous svn revision?

This is the error i get

Having just attempted to build touchlib from clean copy of Ubuntu feisty 7.04…

The following also need to be installed with apt-get

g++ libxmu-dev libglut3-dev

I came across the same link errors as above… this is simply that the cmake build file (src/CMakeList.txt) does not attempt to compile some of the .cpp filter files. So you need to add them. (HighpassFilter.cpp InvertFilter.cpp ScalerFilter.cpp).

I also got this error:

which related to sampleapp.cpp and was fixed by changing the .Area member variables to .area.. there are two occurrences.

Patch for the above problems attached.

Thank you! Compiled like a charm fixing that

i tried following the instructions but get the following:
svn: URL ‘http://touchlib.googlecode.com/svn/multitouch’ doesn’t exist

is there something i need to download manually or has the url changed?

The path has changed from ..svn/multitouch/ to ..svn/trunk/

thanks alan,
now i’m running into another problem =/

it does not seem to be decting where my header files are and is saying they are missing
the stated errors at the bottom of the list are:
make[2]: *** [CMakeFiles/touchlib.dir/BackgroundFilter.o] Error 1
make[1]: *** [CMakeFiles/touchlib.dir/all] Error 2
make: *** [all] Error 2

There should be some more errors before those one… Can you post those as well?

i started back at the svn checkout
and this time seem to have gotten more files
before cmake . would not run, so i was actually in the src folder when i got those errors from running make
now when i cmake .  from the touchlib folder i get the following:

x@x-desktop:~/touchlib$ cmake .
-- Check for working C compiler: /usr/bin/gcc
-- Check for working C compiler: /usr/bin/gcc—works
-- Check size of void*
-- Check size of void* - done
-- Check for working CXX compiler: /usr/bin/c++
-- Check for working CXX compiler: /usr/bin/c++—works
-- Checking GNUCXX version 3/4 to determine OpenCV /opt/net/ path
-- Looking for XOpenDisplay in /usr/lib/libX11.so;/usr/lib/libXext.so
-- Looking for XOpenDisplay in /usr/lib/libX11.so;/usr/lib/libXext.so - found
-- Looking for gethostbyname
-- Looking for gethostbyname - found
-- Looking for connect
-- Looking for connect - found
-- Looking for remove
-- Looking for remove - found
-- Looking for shmat
-- Looking for shmat - found
-- Looking for IceConnectionNumber in ICE
-- Looking for IceConnectionNumber in ICE - found
Oscpack not found - OSC application will not be built
CMake Error: This project requires some variables to be set,
and cmake can not find them.
Please set the following variables:
GLUT_Xmu_LIBRARY (ADVANCED)

-- Configuring done

ok i fixed it, seems i had to type the line from notsohot again, even though i’m quite sure i typed it before…
now most things work, just the OSC application which was still not built

i get a lot of conversion warnings though, is that normal?

when trying to reinstall everything on a faster computer i encountered another problem involving:

make[2]: *** [src/CMakeFiles/sampleapp.dir/sampleapp.o] Error 1
make[1]: *** [src/CMakeFiles/sampleapp.dir/all] Error 2
make: *** [all] Error 2

where i start having problems after ~74% completion when i run make

for those who encounter a similar problem, try downloading the files from: http://touchlib.googlecode.com/files/touchlib-src-20070627.tbz2
instead of using the svn checkout from http://touchlib.googlecode.com/svn/trunk/

still can’t get OSC to work though.

You can get OSC to work by downloading and installing OSCpack...it can be checked out from their SVN with the following command:
svn co https://www.smartelectronix.com:9000/repos/osc/oscpack/trunk

Then run:
make
sudo make install

Then try making touchlib again.

thanks I compiled it within 15 minutes

I have compiled touchlib, run flosc and osc, but no flash application is taking any touches… when I run server, camera should switch on, it does not. The same in windwos - works, what to do?  mabe there are some lib files tobe copied in global lib directiries?

I just finished building touchlib last night. Been poking at it for a while now.  I’m running 7.10 64bit, and it seems to compile fine.  I have not installed/built with osclib, so that could be part of my problem, but I doubt it.  I haven’t found anything definitive yet (will continue to look), but I’m wondering how to tell touchlib to use a specific device.  Currently it runs, but I don’t get anything in the many windows that ./touch opens up. I could very well be forgetting something else as well.

Any input/help/etc would be greatly appreciated.

Thanks

Alright, after finally getting a little more time to poke around. I have touchlib sort of working.  I was trying to run the wrong file

As it sits right now, i can run configapp/sampleapp, but it tends to segfault fairly quickly.  I probably won’t have time to investigate this weekend, as I want to try and get my display at least partially assembled so I can actually have something for input.  After that, I will start looking into making this work better.