installation issue

[ghost]

Hello there.
I am getting below issue while installing opencv4nodejs
I have installed node-gyp and windows-build-tools and I have set the env variables too.
the issue is->

C:\Windows\System32>npm install opencv4nodejs

opencv4nodejs@2.22.2 install C:\Windows\System32\node_modules\opencv4nodejs
node-gyp rebuild

C:\Windows\System32\node_modules\opencv4nodejs>if not defined npm_config_node_gyp (node "C:\Program Files\nodejs\node_modules\npm\bin\node-gyp-bin\....\node_modules\node-gyp\bin\node-gyp.js" rebuild ) else (node "" rebuild )
gyp: binding.gyp not found (cwd: C:\Windows\System32\node_modules\opencv4nodejs) while trying to load binding.gyp
gyp ERR! configure error
gyp ERR! stack Error: gyp failed with exit code: 1
gyp ERR! stack at ChildProcess.onCpExit (C:\Program Files\nodejs\node_modules\npm\node_modules\node-gyp\lib\configure.js:305:16)
gyp ERR! stack at emitTwo (events.js:106:13)
gyp ERR! stack at ChildProcess.emit (events.js:191:7)
gyp ERR! stack at Process.ChildProcess._handle.onexit (internal/child_process.js:219:12)
gyp ERR! System Windows_NT 10.0.10240
gyp ERR! command "C:\Program Files\nodejs\node.exe" "C:\Program Files\nodejs\node_modules\npm\node_modules\node-gyp\bin\node-gyp.js" "rebuild"
gyp ERR! cwd C:\Windows\System32\node_modules\opencv4nodejs
gyp ERR! node -v v6.11.3
gyp ERR! node-gyp -v v3.4.0
gyp ERR! not ok
npm WARN enoent ENOENT: no such file or directory, open 'C:\Windows\System32\package.json'
npm WARN System32 No description
npm WARN System32 No repository field.
npm WARN System32 No README data
npm WARN System32 No license field.
npm ERR! Windows_NT 10.0.10240
npm ERR! argv "C:\Program Files\nodejs\node.exe" "C:\Program Files\nodejs\node_modules\npm\bin\npm-cli.js" "install" "opencv4nodejs"
npm ERR! node v6.11.3
npm ERR! npm v3.10.10
npm ERR! code ELIFECYCLE

npm ERR! opencv4nodejs@2.22.2 install: node-gyp rebuild
npm ERR! Exit status 1
npm ERR!
npm ERR! Failed at the opencv4nodejs@2.22.2 install script 'node-gyp rebuild'.
npm ERR! Make sure you have the latest version of node.js and npm installed.
npm ERR! If you do, this is most likely a problem with the opencv4nodejs package,
npm ERR! not with npm itself.
npm ERR! Tell the author that this fails on your system:
npm ERR! node-gyp rebuild
npm ERR! You can get information on how to open an issue for this project with:
npm ERR! npm bugs opencv4nodejs
npm ERR! Or if that isn't available, you can get their info via:
npm ERR! npm owner ls opencv4nodejs
npm ERR! There is likely additional logging output above.

npm ERR! Please include the following file with any support request:
npm ERR! C:\Windows\System32\npm-debug.log

C:\Windows\System32>

[justadudewhohacks]

Strange this looks like a node-gyp related issue. Do you have python 2.7 installed? Otherwise can you echo %VCTargetsPath% and make sure it points to MSBUILD vc14 (Visual Studio 2015 Compiler).

[nooperpudd]

I don't think you have to install this package in Windows\System32, try another directory

[justadudewhohacks]

Lol, I just noticed the path, thanks @nooperpudd. You shouldn't install it in System32. If you want to install it globally you can npm install -g opencv4nodejs. Otherwise in the local folder of your project.

[ghost]

This is what I am getting when running that command->

Your environment has been set up for using Node.js 6.11.3 (x64) and npm.

C:\Users\advik>npm install -g opencv4nodejs

opencv4nodejs@2.22.2 install C:\Users\advik\AppData\Roaming\npm\node_modules\opencv4nodejs
node-gyp rebuild

C:\Users\advik\AppData\Roaming\npm\node_modules\opencv4nodejs>if not defined npm_config_node_gyp (node "C:\Program Files\nodejs\node_modules\npm\bin\node-gyp-bin\....\node_modules\node-gyp\bin\node-gyp.js" rebuild ) else (node "" rebuild )
C:\Users\advik\AppData\Roaming\npm\node_modules\opencv4nodejs\lib\utils.js:84
if (err) throw(err);
^

Error: ENOENT: no such file or directory, scandir 'C:\opencv3\build\x64\vc14\lib;C:\opencv3\build'
at Error (native)
gyp: Call to 'node ./lib/libs.js' returned exit status 1 while in binding.gyp. while trying to load binding.gyp
gyp ERR! configure error
gyp ERR! stack Error: gyp failed with exit code: 1
gyp ERR! stack at ChildProcess.onCpExit (C:\Program Files\nodejs\node_modules\npm\node_modules\node-gyp\lib\configure.js:305:16)
gyp ERR! stack at emitTwo (events.js:106:13)
gyp ERR! stack at ChildProcess.emit (events.js:191:7)
gyp ERR! stack at Process.ChildProcess._handle.onexit (internal/child_process.js:219:12)
gyp ERR! System Windows_NT 10.0.10240
gyp ERR! command "C:\Program Files\nodejs\node.exe" "C:\Program Files\nodejs\node_modules\npm\node_modules\node-gyp\bin\node-gyp.js" "rebuild"
gyp ERR! cwd C:\Users\advik\AppData\Roaming\npm\node_modules\opencv4nodejs
gyp ERR! node -v v6.11.3
gyp ERR! node-gyp -v v3.4.0
gyp ERR! not ok
npm ERR! Windows_NT 10.0.10240
npm ERR! argv "C:\Program Files\nodejs\node.exe" "C:\Program Files\nodejs\node_modules\npm\bin\npm-cli.js" "install" "-g" "opencv4nodejs"
npm ERR! node v6.11.3
npm ERR! npm v3.10.10
npm ERR! code ELIFECYCLE

npm ERR! opencv4nodejs@2.22.2 install: node-gyp rebuild
npm ERR! Exit status 1
npm ERR!
npm ERR! Failed at the opencv4nodejs@2.22.2 install script 'node-gyp rebuild'.
npm ERR! Make sure you have the latest version of node.js and npm installed.
npm ERR! If you do, this is most likely a problem with the opencv4nodejs package,
npm ERR! not with npm itself.
npm ERR! Tell the author that this fails on your system:
npm ERR! node-gyp rebuild
npm ERR! You can get information on how to open an issue for this project with:
npm ERR! npm bugs opencv4nodejs
npm ERR! Or if that isn't available, you can get their info via:
npm ERR! npm owner ls opencv4nodejs
npm ERR! There is likely additional logging output above.

npm ERR! Please include the following file with any support request:
npm ERR! C:\Users\advik\npm-debug.log

C:\Users\advik>

[justadudewhohacks]

Okay this atleast has a proper error message. 'C:\opencv3\build\x64\vc14\lib;C:\opencv3\build' is not a proper path for your opencv lib folder. Can you check whether OPENCV_LIB_DIR and OPENCV_INCLUDE_DIR are pointing to valid directories with the .lib and .hpp files of opencv?

[ghost]

let me know which folder should be pointed by this variable...from build folder or from sources folder of opencv installation.

[justadudewhohacks]

I assume 'C:\opencv3\build\x64\vc14\lib;' is the correct path for OPENCV_LIB_DIR? OPENCV_INCLUDE_DIR should be something like 'C:\opencv3\build\include' or 'C:\opencv3\build\install' then. Just look for the directory containing the opencv2 folder with all the header (.hpp) files.

[ghost]

C:\opencv3\build\x64\vc14\lib;
C:\opencv3\build;
C:\opencv3\sources\include\opencv2;
C:\opencv3\sources\include\opencv

I have included this files in variable OPENCV_LIB_DIR

[justadudewhohacks]

OPENCV_LIB_DIR should be only 'C:\opencv3\build\x64\vc14\lib;'. OPENCV_INCLUDE_DIR should be 'C:\opencv3\sources\include' then I guess.

[ghost]

C:\opencv3;
C:\opencv3\build\include;
C:\opencv3\build\include\opencv2;
C:\opencv3\build\include\opencv;
C:\opencv3\sources\include\opencv2;
C:\opencv3\build\include

I have included this path in OPENCV_INCLUDE_DIR variable

[justadudewhohacks]

Sorry, I do not really get what the issue is now. The environment variables OPENCV_LIB_DIR and OPENCV_INCLUDE_DIR point to a single directory each, not multiple. If you include multiple paths in the environment variable, it will fail to parse the path, when installing the module.

[ghost]

Is it the last outcome of "npm install -g opencv4nodejs" ->

 Creating library C:\Users\advik\AppData\Roaming\npm\node_modules\opencv4nodejs\build\Release\opencv4nodejs.lib and

object C:\Users\advik\AppData\Roaming\npm\node_modules\opencv4nodejs\build\Release\opencv4nodejs.exp
Generating code
c:\users\advik\appdata\roaming\npm\node_modules\opencv4nodejs\cc\modules\imgproc\contour.cc(159): warning C4700: uninit
ialized local variable 'parameter' used [C:\Users\advik\AppData\Roaming\npm\node_modules\opencv4nodejs\build\opencv4nod
ejs.vcxproj]
Finished generating code
opencv4nodejs.vcxproj -> C:\Users\advik\AppData\Roaming\npm\node_modules\opencv4nodejs\build\Release\opencv4nodejs.n
ode
opencv4nodejs.vcxproj -> C:\Users\advik\AppData\Roaming\npm\node_modules\opencv4nodejs\build\Release\opencv4nodejs.pd
b (Full PDB)

• opencv4nodejs@2.22.2
  added 3 packages in 211.857s

[ghost]

if it is the final output of the installation, then let me know.
So I could close the issue.

thank you

[justadudewhohacks]

Yes finished generating code means the build is done

[ghost]

thank you.