Building a custom cgminer for MT300N-V2

preshow · 2020-03-07T17:48:48.567Z

This is my first time attempting to build a custom package on my gl-inet MT300N-V2, and the software in question is not part of openwrt / packages.

I just want to build an .ipk for it.

From what I understood, I need gl-inet / sdk

$ git clone https://github.com/gl-inet/sdk glinet-sdk
$ cd glinet-sdk
$ ./download.sh ramips-1806

After that I try to understand what is meant in the gl-inet sdk README with

Place your package in sdk/<version>/<target>/package/

The software I want to build has a github project and a configure script, so I git clone it into sdk/<version>/<target>/package/

$ git clone -b r606 --depth 1 https://github.com/vthoang/cgminer.git sdk/1806/ramips/package/cgminer

Then I run the make command, which fails.

make[1]: *** No rule to make target 'package/cgminer/compile

Can anyone with more experience tell me how to make it work?
Or point me to useful resources? I’m lost, and have never done cross-compilation before. I was hoping the gl-inet/sdk would ease the process, but there’s evidently something missing in my understanding of how to use it.

Johnex · 2020-03-07T21:14:42.582Z

First of all, why would you want to use CGMiner on your router? It will basically be a 100% waste of electricity and also a waste of your time.

Also unfortunately if what you want to build doesn’t have an “OpenWRT Package”, then it’s not as simple as in the SDK guide.

As an example, take a look at the OpenWRT Package structure here:

https://github.com/openwrt/packages/tree/master/net/obfsproxy

OpenWRT Packages have a special kind of Makefile, that will either download a remote package and build from the downloaded sources, or build locally. It will create the IPK package you can install on the router, and contains install locations, files and so on.

I found a package source for CGMiner here:

github.com

cgminer-openwrt-packages/cgminer at master ·...

master/cgminer

Avalon ASIC openwrt cgminer monitor. Contribute to Canaan-Creative/cgminer-openwrt-packages development by creating an account on GitHub.

It will need to be modified since the person is using it for Avalon, i guess some specific miner hardware.

preshow · 2020-03-17T06:40:02.408Z

Thank you for the pointers to external resources.

I’m well aware that this is a lost cause, but the whole point of the exercise was for me to run a low-power device around the clock with internet connectivity and a USB port for my NEWPAC miner. This is just a miner for luck, with intergalactically small odds of mining any block ever.

I knew all that when I was getting into this.

But I was getting nowhere with OpenWRT and so I wrote this question in the forum before giving up and throwing everything away. You took the time to respond and I’m thankful for that.

So I shall try. And it will be wasted time. And that is OK.

preshow · 2020-04-25T20:42:40.851Z

I managed to get a bit further, but I’m not quite sure how to fix this missing dependency

root@MT300N-V2:~# opkg install cgminer_git-9e51f0b-1_mipsel_24kc.ipk 
Installing cgminer (git-9e51f0b-1) to root...
Collected errors:
 * satisfy_dependencies_for: Cannot satisfy the following dependencies for cgminer:
 * 	udev * 
 * opkg_install_cmd: Cannot install package cgminer.

I tried (when building the ipk)

$ scripts/feeds install libudev-fbsd

And I tried changing +udev to +libudev-fbsd in the cgminer openwrt Makefile’s

DEPENDS:=...

to no avail.

I don’t quite understand how the dependency on udev is detected, and whether it is a dependency on a library or a daemon, and whether there is an openwrt package for either. My guess of libudev-fbsd was just a crap shoot based on the package description.

Thanks for any help

Johnex · 2020-04-26T16:49:37.710Z

Hmm.
Just a quick look at other packages containing the string udev:

GitHub

Search · udev · openwrt/packages

Community maintained packages for OpenWrt. Documentation for submitting pull requests is in CONTRIBUTING.md - Search · udev · openwrt/packages

You can see a lot have the flag disabling udev. Maybe you need that also?