Hello People,

I have recently started running PD through Linux to take advantage of the better compatibility and so I am a little lost as to how to set somethings up. It seems there are pd files in many different folders and I'm unsure where the necessary ones are.

I am using pd-extended.40.3 for Ubuntu Hardy, but on Xubuntu.

In particular I am trying to use the opencv and haarcascades with PD, hence the changeover.
The website that informs on opencv& PD when talking about installing the libraries
http://hangar.org/wikis/lab/doku.php?id=start:puredata_opencv says

" edit the Makefile to fit your system and sources folders:

for pix_opencv edit the Makefile and change the values for PD_DIR and GEM_DIR variables

for pdp_opencv edit the Makefile.config and change the values for OPENCV_CPPFLAGS, PD_CPPFLAGS, PDP_CFLAGS variables

then, compile it :: "

My Makefile does not have this it has
srcdir = .
top_srcdir = .

Does anyone know what to change these to or how to find the relevant folder.
Please, I am dieing to have some fun with opencv.

I just downloaded them from the link and sure enough those variables are there.

at the top of pdp_opencv/Makefile.config:
# if configure can't find the m_pd.h header
# specify pd's include path here and ignore the warning
#
OPENCV_CPPFLAGS=-I/usr/include/opencv/
PD_CPPFLAGS=-I/usr/src/pd-0.40-2/src
PDP_CFLAGS=-I/usr/src/pdp-0.12.5-test-7/include -DPD -Wall -W -Wstrict-prototypes -Wno-unused -Wno-parentheses -Wno-switch -O2 -funroll-loops -fomit-frame-pointer -ffast-math -freg-struct-return -DLINUX

at the top of pix_opencv/Makefile:
PD_DIR = /usr/src/pd-0.40-2
GEM_DIR = /usr/src/Gem

Ahhh....
I was looking at the wrong file.
How stupid... Thanks Saturno

But still I don't have a clue how to set it up from there.
I tried changing the folders to usr/lib/pd and usr/lib/pd/extra/Gem but had no success.
All my pd and Gem folders are in a lib folder rather than a src folder.
And there doesn't seem to be a pd-extended-40.3 folder....

So can I ask if someone has this running and if they do did they compile PD themselves and should I be looking for a src folder or a lib folder? What type of pd files is it looking to work with?

Cheers

Just gave it another look. It seems that they both come with precompiled objects. What you can do is check to make sure that they'll work propperly on your system. One way to do this is to check their links.

Run an "ldd" command in the pdp_opencv folder ("pdp_opencv $" is the prompt, not command):
pdp_opencv $ ldd pdp_opencv.pd_linux
linux-gate.so.1 => (0xb7f31000)
libcxcore.so.1 => not found
libcv.so.1 => not found
libhighgui.so.1 => not found
libcvaux.so.1 => not found
libml.so.1 => not found
libc.so.6 => /lib/libc.so.6 (0xb7daa000)
/lib/ld-linux.so.2 (0x80000000)

See where it says "not found"? That's because I don't have openCV installed on my machine. If I did then ldd would properly show that link. Make sure all the links are pointing somewhere (like how libc.so.6 is pointing to /lib/libc.so.6 (0xb7daa000))

Do the same in pix_opencv:
pix_opencv $ ldd *.pd_linux

I'm not showing the output here because there are 9 pd_linux files.

If everything seems ok copy these pd_linux files to your pd's path. In my machine it's /usr/lib/pd/extra

saturno

The ldd suggestion seems to work fine, does not seem to have errors.

But it still doesn't work.
I did notice that the opencv library did not load when starting pd. I have always used PD extended and not entirely sure how to add the externals for add on. Maybe this is the problem. So I have tried this but maybe failed as I am unclear about the variety of folders linux installs where to look for this.

I have copied the files that end in .pd_linux to the extra folder.

So maybe it's the opencv not loading in PD but maybe this should be sorted in my efforts install the pix_opencv addons. I have tried to redo the make but it doesn't run like it did previously.

Many many thanks for the help Saturno. Appreciated

You can change the folders PD checks under File->Path

Make sure your extra folder is there. If you do change it you'll have to restart PD

Saturno thank you so much for your help, support and counciling but after so many efforts to get this running and looking at every forum I could understand I unfortunately have to close the book on this as I have invested more than an unbearable amount of time on it.

I have left it for a few days so to come back with a fresh mind but end up with the same dead ends.
Darn