hx711.node: undefined symbol: wiringPiSetup

[carlberg74]

Hi,

Found your nodejs lib for hx711, but I keep getting error: missing symbol. (I am new at nodejs)
node: symbol lookup error: /home/ubuntu/test-nodejs/node_modules/hx711/build/Release/hx711.node: undefined symbol: wiringPiSetup

Get this when running code below:

var hx711 = require('hx711');
const SCLK = 5;
const DATA = 6;
var sensor = hx711(SCLK, DATA); << error.

Found the wiringPi/wiringPi/wiringPi.h in the src of wiringPi from git, and it seem to contain wiringPiSetup etc, but I don't know where to put it..or how to fix this.

Please advice.

Cheers

[dangrie158]

Hi,

wiringPi is a dependency of the driver. For installation instructions visit: http://wiringpi.com/download-and-install/

[carlberg74]

Yes, I have installed wiringPi, gpio -v works and I can even use the WiringPi-Node lib with node without getting any runtime error.
I installed this node hx711 lib using: npm install hx711 --save, is there something missing in the package?

[dangrie158]

Hi,
how did you install wiringPi? Check if you have a libWiringPi in your LD_LIBRARY_PATH or modify the binding.gyp file to reference the .so object using an absolute path and recompile the library.

Hope this helps.

[carlberg74]

I solved it using the binding.gyp adding "libraries": [ "/usr/local/lib/libwiringPi.so" ] comment out -ldflags
and then ran node-gyp build..

Maybe it also worked if I just set the LD_LIBRARY_PATH and then ran node.gyb build... i don't know.

thanks.

[dangrie158]

Thanks for letting me know.

Would be great if you could make a pull request as it seems that this is the more compatible way of doing things.
Otherwise it would be great if you could just post your updated gyp file so I can edit it in.

Thanks
Daniel