Building BFGminer with --eneble-cpumining (tip)

[dellnull]

I successfully managed to build BFGminer with cpu mining support. I know cpu mining is obsolete but I did it just for fun and maybe there are others that wanna try just for fun. But fun can turn to pain quickly so I share my experience and maybe save someone some pain.

I followed the windows-build.txt guide inside the downloaded source package.
It worked like a charm except when I got to the "Build bfgminer.exe" -section

For some reason I couldn't run the configure-command without errors that stopped configure to run to the end

Code:

CFLAGS="-O2 -msse2" ./configure --enable-cpumining

I change that to:

Code:

./configure --enable-cpumining

And it worked!!
(The strange thing is that now, a couple of days later, it actually works with CFLAGS.....)

When you are at the "Copy files to a build directory/folder"-section you might want to add zlib1.dll to your directory/folder if you plan to run your miner from another computer that might not have zlib1.dll.
Just copy zlib1.dll   from \MinGW\bin to your folder where you add all other files that are needed for BFG to run.

That's all, happy mining

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[eRRoRist]

I too compiled a version of bfgminer which supports CPU mining. Trying to mine LTC via scrypt. This is the command I use.

Code:

bfgminer --scrypt -S noauto -S cpu:auto -t 32 -E 1 -s 1 -o stratum+tcp://global.wemineltc.com:3333 ....

This is the result I get. But don't seem to be hashing though. Am I missing something?

https://i.imgur.com/DOOfhA0.jpg

[2013-12-05 11:36:35] Started at [2013-12-05 11:28:50]
[2013-12-05 11:36:35] Pool: stratum+tcp://global.wemineltc.com:3333

[2013-12-05 11:36:35] CPU hasher algorithm used: scrypt
[2013-12-05 11:36:35] Runtime: 0 hrs : 7 mins : 45 secs
[2013-12-05 11:36:35] Average hashrate: 0.0 Megahash/s
[2013-12-05 11:36:35] Solved blocks: 0
[2013-12-05 11:36:35] Best share difficulty: 0
[2013-12-05 11:36:35] Share submissions: 0
[2013-12-05 11:36:35] Accepted shares: 0
[2013-12-05 11:36:35] Rejected shares: 0 + 0 stale (nan%)
[2013-12-05 11:36:35] Accepted difficulty shares: 0
[2013-12-05 11:36:36] Rejected difficulty shares: 0
[2013-12-05 11:36:36] Hardware errors: 1
[2013-12-05 11:36:36] Network transfer:   9.5 /   1.1 kB  ( 20.6 /   2.4  B/s)

[2013-12-05 11:36:36] Efficiency (accepted shares * difficulty / 2 KB): 0.00

[2013-12-05 11:36:36] Utility (accepted shares / min): 0.00/min

[2013-12-05 11:36:36] Unable to get work from server occasions: 0

[2013-12-05 11:36:36] Work items generated locally: 548
[2013-12-05 11:36:36] Submitting work remotely delay occasions: 0

[2013-12-05 11:36:36] New blocks detected on network: 4

[thepwnorbpwnd]

Stop. You shouldn't be mining with cpu, it'll probably die before you get 5$ worth of ltc.

[ner0]

Stop. You shouldn't be mining with cpu, it'll probably die before you get 5$ worth of ltc.

Unless he is also aware of that for obvious reasons and is doing it for the fun or educational purposes, in which case a more constructive answer would be appreciated.

[tk808]

Stop. You shouldn't be mining with cpu, it'll probably die before you get 5$ worth of ltc.

he's serious

[eRRoRist]

Yup..I'm pretty serious. And using CPU to mine LTC isn't as bad as you think. I can get 200KH per server(cpuminer) and I have a lot of servers in my data center. But they are behind a firewall which is causing me a lot of headache just to get them to connect to the stratum servers.

[thepwnorbpwnd]

Yup..I'm pretty serious. And using CPU to mine LTC isn't as bad as you think. I can get 200KH per server(cpuminer) and I have a lot of servers in my data center. But they are behind a firewall which is causing me a lot of headache just to get them to connect to the stratum servers.

I was under misinterpretation, I apologize as not everyone is as gifted to have readily available hardware, power, and cooling to openly use like that.