fail to find opencv.pc

[peterbraden]

fail to find opencv.pc

[rhasson]

So I managed to get it to build but I'm not sure how...

Now I'm seeing the following:

c = require('opencv')
Error: Cannot find module 'opencv'
at Function.Module._resolveFilename (module.js:338:15)
at Function.Module._load (module.js:280:25)
at Module.require (module.js:362:17)
at require (module.js:378:17)
at repl:1:6
at REPLServer.self.eval (repl.js:112:21)
at Interface. (repl.js:250:12)
at Interface.EventEmitter.emit (events.js:88:17)
at Interface._onLine (readline.js:199:10)
at Interface._line (readline.js:519:8)

I tried the suggestion in a previous issue to run ./build.sh but that still didn't fix the issue.

Any ideas?

[rhasson]

I found out the problem.

init.cc:
NODE_MODULE(binding, init)

but needs to be:
NODE_MODULE(opencv, init)

I made the change, rebuilt and it loads up fine.

b = require('./lib/bindings.js')
{ version: '2.4',
readImage: [Function],
Point: [Function: Point],
Matrix: { [Function: Matrix] Eye: [Function] },
CascadeClassifier: [Function: CascadeClassifier],
VideoCapture: [Function: VideoCapture],
Contours: [Function: Contours] }
c = require('./lib/opencv.js')
{ ImageStream:
{ [Function]
super_:
{ [Function: Stream]
super_: [Function: EventEmitter],
Stream: [Circular] } } }

[peterbraden]

Interesting - nice. What platform are you on because I've never seen this? Can you make this a pull request so I can run the travis tests agains it?

Thanks!

[rhasson]

I'm on OSX 10.8.2

I'm making a pull request now.

[peterbraden]

closed by #18

[RaphiePS]

I'm on OSX 10.8.2 and I'm still having this issue. Could it be due to my opencv version? I have v2.4.2 installed via Homebrew.

[peterbraden]

wait, I hadn't republished on npm yet - try again now.

[RaphiePS]

Huh, still not working. This is the error message if that's any help: https://gist.github.com/2327c58034aa01572275.

[rhasson]

You're seeing an error with building node-opencv, the fix that I peterbraden provided was for loading the module into node after you successfully built it.

Did you try to set your PKG_CONFIG_PATH environment variable to point to the opencv pkgconfig directory (with macports it's /opt/local/lib/pkgconfig/, not sure what it is for homebrew installs) ? I installed opencv 2.4.2 with macports and had to manually set this environment variable since the installation path was not the default one.

[RaphiePS]

Bingo! Thanks!

[mustafaakin]

For Ubuntu users that have this problem, just install libopencv-dev package too.