build_minetest.sh

#!/bin/bash
## ###################
## This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.
## Read the license terms at http://creativecommons.org/licenses/by-nc-sa/4.0/
## ###################
## You can find the latest version of this script at https://gist.github.com/Fritigern/4e21484ec27d6416cc4
## ###################

    ## ******* TROUBLESHOOTING: *******
    ## Run this if you get errors during the first time you try to build. (Works in Debian/Ubuntu, may work in other distros).

    ## *** For Debian-based distros (Ubuntu, Debian, etc) ***
    # sudo apt-get install git build-essential libirrlicht-dev cmake libbz2-dev libpng12-dev libjpeg8-dev libxxf86vm-dev libgl1-mesa-dev libsqlite3-dev libogg-dev libvorbis-dev libopenal-dev libcurl4-gnutls-dev libfreetype6-dev libhiredis-dev libleveldb-dev libluajit-5.1-dev libspatialindex-dev doxygen gcc-7 g++7

    ## *** For Arch-based distros (tested on Manjaro only) ***
    # sudo pacman -S git cmake openal irrlicht libpng12 hiredis leveldb


#### DOWNLOADING AND BUILDING MINETEST ####
## The following checks to see if the git repositories have been set up yet, and if needed,
## it will set up your local git repository and downloads the source code for minetest.
if [ ! -d  Minetest ] ; then
    git clone https://github.com/minetest/minetest Minetest
fi
if [ ! -d  Minetest/games/minetest_game ] ; then
    git clone https://github.com/minetest/minetest_game Minetest/games/minetest_game
fi

basedir=$PWD

#Timer, so that we know how long the compilation takes.
function timer()
{
    if [[ $# -eq 0 ]]; then
        echo $(date '+%s')
    else
        local  stime=$1
        etime=$(date '+%s')
        if [[ -z "$stime" ]]; then stime=$etime; fi
        dt=$((etime - stime))
        ds=$((dt % 60))
        dm=$(((dt / 60) % 60))
        dh=$((dt / 3600))
        printf '%d:%02d:%02d' $dh $dm $ds
    fi
}

numcores=$(nproc) # Get the number of cores that your PC has
let cores=$numcores-1 # Take away one, so that you will have one core free to do whatever else.

if [[ $cores == 0 ]]; then # If your PC has only one core, we will use that one core to compile Minetest
  let cores=1
fi

echo "************************************************************************"
echo "**  Detected $numcores cores, so we be will using $cores cores for compilation.  **"
echo "************************************************************************"
echo

cd $basedir/Minetest/games/minetest_game # First we will try to update minetest_game
echo ">>>> Updating minetest_game..."
git pull # pull in the new updates, if there are any.
echo

cd $basedir/Minetest # Now we go the Minetest dir, and try to update minetest itself.
echo ">>>> Updating the minetest engine..."
git pull # And pull again, this time for Minetest itself
echo

# Please read the README.txt file for info on what the "-D" options do

#Start measuring compilation time....
t=$(timer)

# Let's make a game!
echo "-- *** Starting compilation ***"

cmake . -DRUN_IN_PLACE=TRUE -DENABLE_FREETYPE=TRUE -DENABLE_LEVELDB=0 -DENABLE_CURL=TRUE -DENABLE_SOUND=TRUE -DENABLE_LUAJIT=TRUE -DENABLE_SPATIAL=TRUE -DBUILD_SERVER=TRUE -DBUILD_CLIENT=TRUE -DENABLE_SYSTEM_JSONCPP=1 -DCMAKE_CXX_COMPILER=/usr/bin/g++-7
make -j$cores

ENDTIME=$(timer $t) # We can stop measuring time now. Even if compilation failed.

# Check if the compilation is successful, If not, report the error and notify of stoppage.
if [[ $? -ne 0 ]]; then
 echo
 echo "Error $? after $ENDTIME of compilation time. Script halted."
 exit #Make sure to stop completely if there is an error. We do not want Minetest to be unplayable.
fi

# Let's start minetest. You can enable/disable this bit if you want to.
#cd $basedir/bin
#exec ./minetest

echo "*********************"
echo "****    Done!    ****"
echo "*********************"
echo
echo "Compilation of minetest completed in "$ENDTIME
echo

exit # Not really needed, but feels a nice wrap-up of the script.