epoll.node bindings file unable to locate

[hulk-mk]

following error coming. I think its issue with the epoll module. I'm using it to write on lcd using lcd module on BBB. Any help will be appreciated.

debugger listening on port 15454

/usr/local/lib/node_modules/lcd/node_modules/onoff/node_modules/epoll/node_modules/bindings/bindings.js:91 throw err ^ Error: Could not locate the bindings file. Tried: → /usr/local/lib/node_modules/lcd/node_modules/onoff/node_modules/epoll/build/epoll.node → /usr/local/lib/node_modules/lcd/node_modules/onoff/node_modules/epoll/build/Debug/epoll.node → /usr/local/lib/node_modules/lcd/node_modules/onoff/node_modules/epoll/build/Release/epoll.node → /usr/local/lib/node_modules/lcd/node_modules/onoff/node_modules/epoll/out/Debug/epoll.node → /usr/local/lib/node_modules/lcd/node_modules/onoff/node_modules/epoll/Debug/epoll.node → /usr/local/lib/node_modules/lcd/node_modules/onoff/node_modules/epoll/out/Release/epoll.node → /usr/local/lib/node_modules/lcd/node_modules/onoff/node_modules/epoll/Release/epoll.node → /usr/local/lib/node_modules/lcd/node_modules/onoff/node_modules/epoll/build/default/epoll.node → /usr/local/lib/node_modules/lcd/node_modules/onoff/node_modules/epoll/compiled/0.10.29/linux/arm/epoll.node at bindings (/usr/local/lib/node_modules/lcd/node_modules/onoff/node_modules/epoll/node_modules/bindings/bindings.js:88:9) at Object. (/usr/local/lib/node_modules/lcd/node_modules/onoff/node_modules/epoll/epoll.js:1:99) at Module._compile (module.js:456:26) at Object.Module._extensions..js (module.js:474:10) at Module.load (module.js:356:32) at Function.Module._load (module.js:312:12) at Module.require (module.js:364:17) at require (module.js:380:17) at Object. (/usr/local/lib/node_modules/lcd/node_modules/onoff/onoff.js:4:11) at Module._compile (module.js:456:26)

[fivdi]

The binary for the epoll package which is called epoll.node doesn't appear to exist on the system. The above output doesn't provide any information as to why it doesn't exist.

Can you create a new empty directory in the the home directory, run the command npm install lcd in that directory, and post the complete output of that command please?

This is the output I see:

root@beaglebone:~/lcd# npm install lcd

> epoll@0.1.19 install /root/lcd/node_modules/epoll
> node-gyp rebuild

make: Entering directory '/root/lcd/node_modules/epoll/build'
  CXX(target) Release/obj.target/epoll/src/epoll.o
  SOLINK_MODULE(target) Release/obj.target/epoll.node
  COPY Release/epoll.node
make: Leaving directory '/root/lcd/node_modules/epoll/build'
/root/lcd
└─┬ lcd@1.1.4 
  ├─┬ onoff@1.1.1 
  │ └─┬ epoll@0.1.19 
  │   ├── bindings@1.2.1 
  │   └── nan@2.3.5 
  └── q@1.4.1 

npm WARN enoent ENOENT, open '/root/lcd/package.json'
npm WARN lcd No description
npm WARN lcd No repository field.
npm WARN lcd No README data
npm WARN lcd No license field.
root@beaglebone:~/lcd# 

[fivdi]

@hulk-mk was it possible to successfully install the lcd package?

[bmwertman]

I have the same issue and tried your suggestion but I get the below error message after running npm install lcd in the new directory created inside home directory;

gyp WARN EACCES attempting to reinstall using temporary dev dir "/home/testEpoll/node_modules/epoll/.node-gyp"
gyp WARN EACCES user "root" does not have permission to access the dev dir "/home/testEpoll/node_modules/epoll/.node-gyp/8.11.2"

[fivdi]

@bmwertman please open a new issue to describe your problem as it looks you are facing a very different issue.

[bmwertman]

I can open a new issue. But my original error is nearly identical to the OP;

 node -e 'require("./reefbot").mixedWaterOn()'
/home/pi/node_modules/bindings/bindings.js:96
  throw err
  ^

Error: Could not locate the bindings file. Tried:
 → /home/pi/node_modules/epoll/build/epoll.node
 → /home/pi/node_modules/epoll/build/Debug/epoll.node
 → /home/pi/node_modules/epoll/build/Release/epoll.node
 → /home/pi/node_modules/epoll/out/Debug/epoll.node
 → /home/pi/node_modules/epoll/Debug/epoll.node
 → /home/pi/node_modules/epoll/out/Release/epoll.node
 → /home/pi/node_modules/epoll/Release/epoll.node
 → /home/pi/node_modules/epoll/build/default/epoll.node
 → /home/pi/node_modules/epoll/compiled/10.1.0/linux/arm/epoll.node
    at bindings (/home/pi/node_modules/bindings/bindings.js:93:9)
    at Object.<anonymous> (/home/pi/node_modules/epoll/epoll.js:1:99)
    at Module._compile (internal/modules/cjs/loader.js:678:30)
    at Object.Module._extensions..js (internal/modules/cjs/loader.js:689:10)
    at Module.load (internal/modules/cjs/loader.js:589:32)
    at tryModuleLoad (internal/modules/cjs/loader.js:528:12)
    at Function.Module._load (internal/modules/cjs/loader.js:520:3)
    at Module.require (internal/modules/cjs/loader.js:626:17)
    at require (internal/modules/cjs/helpers.js:20:18)

Let me know if you would still like me to open another and I can. Thanks.

[fivdi]

Ok, fair enough :smile: we can take a look at the issue here.

Please post the exact command used for the install and the complete output of that command.

[bmwertman]

Cool thanks :+1:

Are you talking about the command used to install epoll? Because I never directly tried to install epoll.

I'm presuming it's a dependency for your other lib onoff which I had been using successfully in my program before my sd card died and I had to reinstall my OS on a new sd card and re-setup my node environment.

[fivdi]

Are you talking about the command used to install epoll? Becuase I never directly tried to install epoll.

The command that was used to install what ever that happens to be... The complete command

[bmwertman]

sudo npm install onoff
npm WARN saveError ENOENT: no such file or directory, open '/home/pi/package.json'
npm WARN enoent ENOENT: no such file or directory, open '/home/pi/package.json'
npm WARN pi No description
npm WARN pi No repository field.
npm WARN pi No README data
npm WARN pi No license field.

+ onoff@3.1.0
updated 1 package in 6.782s
[+] no known vulnerabilities found [57 packages audited]

[fivdi]

Why is sudo being used?

[bmwertman]

Without sudo I get permission denied;

npm install onoff
npm WARN checkPermissions Missing write access to /home/pi/node_modules/onoff
npm WARN checkPermissions Missing write access to /home/pi/node_modules
npm WARN enoent ENOENT: no such file or directory, open '/home/pi/package.json'
npm WARN pi No description
npm WARN pi No repository field.
npm WARN pi No README data
npm WARN pi No license field.

npm ERR! path /home/pi/node_modules/onoff
npm ERR! code EACCES
npm ERR! errno -13
npm ERR! syscall access
npm ERR! Error: EACCES: permission denied, access '/home/pi/node_modules/onoff'
npm ERR!  { Error: EACCES: permission denied, access '/home/pi/node_modules/onoff'
npm ERR!   stack: 'Error: EACCES: permission denied, access \'/home/pi/node_modules/onoff\'',
npm ERR!   errno: -13,
npm ERR!   code: 'EACCES',
npm ERR!   syscall: 'access',
npm ERR!   path: '/home/pi/node_modules/onoff' }
npm ERR! 
npm ERR! Please try running this command again as root/Administrator.

npm ERR! A complete log of this run can be found in:
npm ERR!     /home/pi/.npm/_logs/2018-05-18T17_42_13_304Z-debug.log

[fivdi]

Are you on a Raspberry Pi logged on as user pi in the home directory? Please post the output of the following command

ls -la

[bmwertman]

 ls -la
total 28
drwxr-xr-x 4 501 dialout 4096 May 11 16:25 .
drwxr-xr-x 3 pi  pi      4096 May 18 00:18 ..
drwxr-xr-x 2 501 dialout 4096 May  9 00:05 drainTimes
drwxr-xr-x 2 501 dialout 4096 May  9 00:23 fillTimes
-rwxr-xr-x 1 501 dialout 8761 May 15 16:04 reefbot.js

[bmwertman]

I'm on Raspberry Pi. not in the home directory though.

[fivdi]

In the post above the directory /home/pi/node_modules was being as the destination directory for the install. What's the output of the commands

cd
ls -l

[bmwertman]

pi@raspberrypi:~/Documents/Reef $ cd
pi@raspberrypi:~ $ ls -l
total 16660
drwxr-xr-x  2 pi   pi       4096 May 17 19:24 Desktop
drwxr-xr-x  3 pi   pi       4096 May 18 00:18 Documents
drwxr-xr-x  2 pi   pi       4096 May 18 13:52 Downloads
drwxr-xr-x  2 pi   pi       4096 May 17 19:24 Music
drwxr-xr-x 25 root root     4096 May 18 17:38 node_modules
drwxr-xr-x  6 pi   pi       4096 May 15 18:54 node-v8.11.2-linux-armv7l
-rw-r--r--  1 pi   pi   17004541 May 15 18:55 node-v8.11.2-linux-armv7l.tar.gz
-rw-r--r--  1 root root     5971 May 18 14:38 package-lock.json
drwxr-xr-x  2 pi   pi       4096 May 17 19:24 Pictures
drwxr-xr-x  2 pi   pi       4096 May 17 19:24 Public
drwxr-xr-x  2 pi   pi       4096 Apr 18 00:57 python_games
drwxr-xr-x  2 pi   pi       4096 May 17 19:24 Templates
drwxr-xr-x  2 pi   pi       4096 May 17 19:24 Videos
pi@raspberrypi:~ $ 

[fivdi]

I think your system is a little messed up. The node_modules directory in the home directory is owned by root so user pi can't use it. Why is node_modules owned by root? Is node_modules in the home directory really needed? If it's not needed please remove it and it's content.

[bmwertman]

Better to delete node_modules owned byroot in home directory? or just sudo chown -R it? If I delete then I would need to reinstall everything right?

[fivdi]

Yes, if you delete it you will need to reinstall everything. It there a lot in node_modules? You could also change the owner. That being said, the home directory is sort of a strange place of a node_modules directory in my opinion.

[bmwertman]

I'm a little new to working on the RPi. On my Mac I typically just set node and my node_modules up globally using the -g flag with npm. Can you recommend a better structure for the RPi

[fivdi]

My rules are:

• Never install globally with -g
• Never install with sudo
• Never install in the home directory
• Create a new directory for each project (as user pi)
• cd into that new directory
• Install whatever is needed using npm install ... (as user pi without sudo)

[bmwertman]

Cool thanks @fivdi! I'll try that.

[fivdi]

Are you going to remove /home/pi/node_modules?

[bmwertman]

Yeah I haven't got that deep into setting things back up. I'll tear it all down and start from scratch so I can get it right.

[fivdi]

That's probably the best idea.