dyld：惰性符号绑定失败，opencv

Question

Trying to get node-opencv working and I'm hitting some errors that I cannot decipher. Any helpful insight is much appreciated.

This happens anytime I try to run one of the examples. In my own attempts I can create a cv.VideoStream(0) but once I try to create an object detection stream or read from the camera it throws the same error.

[~/opencvtest/node_modules/opencv/examples] node camera

dyld: lazy symbol binding failed: Symbol not found: __ZN2cv7imwriteERKNSt3__112basic_stringIcNS0_11char_traitsIcEENS0_9allocatorIcEEEERKNS_11_InputArrayERKNS0_6vectorIiNS4_IiEEEE
  Referenced from: /Users/moog/opencvtest/node_modules/opencv/build/Release/opencv.node
  Expected in: dynamic lookup

dyld: Symbol not found: __ZN2cv7imwriteERKNSt3__112basic_stringIcNS0_11char_traitsIcEENS0_9allocatorIcEEEERKNS_11_InputArrayERKNS0_6vectorIiNS4_IiEEEE
  Referenced from: /Users/moog/opencvtest/node_modules/opencv/build/Release/opencv.node
  Expected in: dynamic lookup

Trace/BPT trap: 5

I've tried reinstalling OpenCV and rebuilding node-opencv but I hit the same error.

node-opencv: v0.5.0
opencv: v2.4.9
node.js: v0.10.28
osx: v10.9.3

Thanks!

Answer 1

I just solve this problem by the following steps:

1. delete all opencv things.... like brew uninstall opencv

2. reinstall opencv by brew again and add echos like

    export PATH="/usr/local/opt/opencv@3/bin:$PATH" export LDFLAGS="-L/usr/local/opt/opencv@3/lib" export CPPFLAGS="-I/usr/local/opt/opencv@3/include" 

   where opencv@3 is my opencv version to your .bash_profile

3. link opencv with brew link --overwrite --force opencv@3 .

My problem is that I didn't delete my old opencv files clean so I need to brew link --force

Wish I can help.