Compile in Node.js v8 fails.

[mikeal]

Looks like this isn't compatible with new V8 because of some recent deprecations.

Here's the full log.

[REMOVED, see below]

[mikeal]

I cloned the repo and upgraded nan. Now I'm getting a much smaller error :)

 % npm run build                                                                                              

> [email protected] build /Users/mikeal/git/node-opencv
> node-gyp build

  CXX(target) Release/obj.target/opencv/src/Matrix.o
../src/Matrix.cc:1687:7: error: no member named 'calcOpticalFlowPyrLK' in namespace 'cv'
  cv::calcOpticalFlowPyrLK(old_gray, new_gray, old_points, new_points, status, err, winSize, maxLevel, criteria, flags, minEigThreshold);
  ~~~~^
1 error generated.
make: *** [Release/obj.target/opencv/src/Matrix.o] Error 1
gyp ERR! build error
gyp ERR! stack Error: `make` failed with exit code: 2
gyp ERR! stack     at ChildProcess.onExit (/usr/local/lib/node_modules/npm/node_modules/node-gyp/lib/build.js:258:23)
gyp ERR! stack     at emitTwo (events.js:125:13)
gyp ERR! stack     at ChildProcess.emit (events.js:213:7)
gyp ERR! stack     at Process.ChildProcess._handle.onexit (internal/child_process.js:200:12)
gyp ERR! System Darwin 16.7.0
gyp ERR! command "/usr/local/bin/node" "/usr/local/lib/node_modules/npm/node_modules/node-gyp/bin/node-gyp.js" "build"
gyp ERR! cwd /Users/mikeal/git/node-opencv
gyp ERR! node -v v8.4.0
gyp ERR! node-gyp -v v3.6.2
gyp ERR! not ok
npm ERR! code ELIFECYCLE
npm ERR! errno 1
npm ERR! [email protected] build: `node-gyp build`
npm ERR! Exit status 1
npm ERR!
npm ERR! Failed at the [email protected] build script.
npm ERR! This is probably not a problem with npm. There is likely additional logging output above.

npm ERR! A complete log of this run can be found in:
npm ERR!     /Users/mikeal/.npm/_logs/2017-09-07T00_16_41_045Z-debug.log

[mikeal]

OpenCV Version is 3.3.0

[justadudewhohacks]

OpenCV 3.3 is quite new, probably not supported yet.

[fakob]

I am getting the same error but I have OpenCV Version 3.2.0 installed.

[rjschie]

I was getting this error as well, and used OpenCV 2.4.x from Homebrew: brew tap homebrew/science then brew install opencv@2. This installs OpenCV 2.4.x, however it still won't create the proper symlinks, so then you'll need to run brew link --force opencv@2 to do that, or manually add to the opencv@2 libs to your PATH and PKG_CONFIG_PATH in your profile.

Now I have the following versions and it's working fine:
Node 8.4
OpenCV 2.4.13.2

[peterbraden]

It's not a fix but the calcOpticalFlowPyrLK error is because opencv was compiled without a link to -lopencv_video

I guess we should have a compile macro to check for features like this.

[shamrin]

@rjschie your suggestion has also worked for me on node v6.11.3 (latest LTS for 6.x release)

[mikestopcontinues]

@rjschie works here too with node 9.2.0 and OSX 10.13.1 with brew link --force --overwrite opencv@2.

[peterbraden]

Now works in node 12 after #667.

[marcoippolito]

@peterbraden Is the problem I described here: #669
somewhat related?