cpuminer - Compile and install on Linux CentOS

Scrypt based crypto-currencies unlike Bitcoin’s SHA-256 is more reliant on memory, not processing efficiency. That is the reason those specialized hardwares developed for Bitcoin mining will not work with Litecoin and making CPU mining more effective.

 

This is a simple tutorial on the steps to compile and install CPUminer on Linux CentOS.

 

Compile CPUminer under Linux CentOS

• Setting locale

echo "export LC_ALL=en_US.UTF-8" >> /etc/profile

export LC_ALL=en_US.UTF-8

• Install dependencies

yum install git automake gcc make curl-devel

• Clone cpuminer

git clone https://github.com/pooler/cpuminer

• Compile

cd cpuminer

./autogen.sh

./configure CFLAGS="-O3"

make

make install


 

Check run for success

After that, the miners will install to /usr/local/bin/. You can check the cpuminer version with this:

• Command

/usr/local/bin/minerd --version

• Result

cpuminer 2.3.2

libcurl/7.19.7 NSS/3.14.0.0 zlib/1.2.3 libidn/1.18 libssh2/1.4.2

# /usr/local/bin/minerd --version

/usr/local/bin/minerd: error while loading shared libraries: libjansson.so.4: cannot open shared object file: No such file or directory

# ln -s /usr/local/lib/libjansson.so.4 /usr/lib/libjansson.so.4

# ls -al /usr/lib/libjansson.so.4

lrwxrwxrwx. 1 root root 30 2017-09-28 01:45 /usr/lib/libjansson.so.4 -> /usr/local/lib/libjansson.so.4

Issue

You install Asterisk 12 successfully but receive the following error when trying to launch asterisk:

asterisk: error while loading shared libraries: libjansson.so.4: cannot open shared object file: No such file or directory

Solution

Execute this

echo “/usr/local/lib” > /etc/ld.so.conf.d/usr_local.conf

and

/sbin/ldconfig

Cause

I’m not expert on this. Can anyone explain why this works? I’ll give you a link to your website in return.

Running cpuminer

• Command

./minerd –url=stratum+tcp://coinotron.com:3334 –userpass=username:password

• Result

If you have 8 thread, success mining will be like this.

[2013-12-18 13:01:24] thread 1: 363912 hashes, 6.07 khash/s
[2013-12-18 13:01:24] thread 6: 363612 hashes, 6.06 khash/s
[2013-12-18 13:01:24] thread 4: 363504 hashes, 6.06 khash/s
[2013-12-18 13:01:24] thread 7: 363432 hashes, 6.06 khash/s
[2013-12-18 13:01:24] thread 0: 365196 hashes, 6.09 khash/s
[2013-12-18 13:01:24] thread 2: 365580 hashes, 6.09 khash/s
[2013-12-18 13:01:24] thread 5: 364080 hashes, 6.06 khash/s
[2013-12-18 13:01:35] thread 3: 366072 hashes, 6.10 khash/s
[2013-12-18 12:34:03] accepted: 1/1 (100.00%), 48.55 khash/s (yay!!!)

 

FAQ / Troubleshooting

• My antivirus flags the Windows binary as malware.

That is a known false positive. More information here.

• When running configure I get the error “C compiler cannot create executables”.

Make sure you typed CFLAGS="-O3" with a big O, not with a zero.

• configure chokes on something like “LIBCURL_CHECK_CONFIG(, 7.10.1, ,'”.

Make sure you have installed the development package for libcurl. If you have and you’re still getting the error when compiling from git, try compiling from tarball instead.

• I’m trying to connect to a Stratum server, but I get “HTTP request failed: Empty reply from server”.

Make sure you specified the correct protocol in the server URL (stratum+tcp://)

• Is there any command-line option I can tweak to make it mine faster?

No. The miner automatically picks the best settings for the CPU it is run on.

• Will this miner use a lot of RAM when using the scrypt algorithm?

No, that’s a GPU thing.