There are a couple of things you need for mining monero in osx using xmring:

1) A monero wallet (get one from mymonero.com)
2) Homebrew (brew.sh)

mining monero in osx using xmring: dependencies

You have to make sure you have homebrew installed (so that you can install the xmrig dependencies), and you need a wallet to put your mined monero in and keep them safe.

Once you have homebrew installed on your mac, you can now install the dependencies for xmrig in a terminal using brew:

brew install cmake libuv libmicrohttpd

mining monero in osx using xmring: compile the miner

Next, clone the xmrig repo from github and build your binary. The link below is for the cpu miner, but there are nvidia gpu and amd gpu versions available too
https://github.com/xmrig/xmrig

git clone https://github.com/xmrig/xmrig.git
cd xmrig
mkdir build
cd build
cmake ..
make

You now have a binary for your compiled xmrig ready to run on your mac and start mining monero.

mining monero in osx using xmring: Mining

This is where the fun starts
You’ll need to pick a mining pool (I use supportxmr.com)
supportxmr.com has a config generator, which you can use to run your miner

Simply select your hardware from the dropdown list, fill in a miner name and add your email address (you dont need to create a login yet
– you only need that after you have mined some monero). You’ll see the config generated at the bottom of the page.

Copy the config and paste it into a text file (config.txt) in the same directory as your xmrig binary) then run xmrig.

./xmrig

mining monero in osx using xmring

You should be mining (and see an output like the image above)!

On my machines I don’t use the config file. Instead I have a bash script that I run which has all the parameters inside:

Create a new bash script, and paste the following (you can change the parameters if you need)

#!/bin/sh
xmrig -v 1 -t 2 -o pool.supportxmr.com:5555 -u your_xmr_wallet_id -p miner_name:email@somewhere.com -k─

Once you change the parameters for your miner name, email address and xmr wallet ID, you can start the script and it will run and show your mining output!

mining monero in osx using xmring: cli options

-a, --algo=ALGO       cryptonight (default) or cryptonight-lite
  -o, --url=URL         URL of mining server
  -O, --userpass=U:P    username:password pair for mining server
  -u, --user=USERNAME   username for mining server
  -p, --pass=PASSWORD   password for mining server
  -t, --threads=N       number of miner threads
  -v, --av=N            algorithm variation, 0 auto select
  -k, --keepalive       send keepalived for prevent timeout (need pool support)
  -r, --retries=N       number of times to retry before switch to backup server (default: 5)
  -R, --retry-pause=N   time to pause between retries (default: 5)
      --cpu-affinity    set process affinity to CPU core(s), mask 0x3 for cores 0 and 1
      --cpu-priority    set process priority (0 idle, 2 normal to 5 highest)
      --no-huge-pages   disable huge pages support
      --no-color        disable colored output
      --donate-level=N  donate level, default 5% (5 minutes in 100 minutes)
      --user-agent      set custom user-agent string for pool
  -B, --background      run the miner in the background
  -c, --config=FILE     load a JSON-format configuration file
  -l, --log-file=FILE   log all output to a file
      --max-cpu-usage=N maximum CPU usage for automatic threads mode (default 75)
      --safe            safe adjust threads and av settings for current CPU
      --nicehash        enable nicehash support
      --print-time=N    print hashrate report every N seconds
  -h, --help            display this help and exit
  -V, --version         output version information and exit

References:
https://github.com/xmrig/xmrig/wiki
mining altcoins in centos