Mining Monero on old Ubuntu

Getting the xmr-stak-cpu to work on an ubuntu 14.04:

* Compile gcc from scratch and install to /home/user/inst (script)

#!/bin/bash
VER=7.2.0
cd
WORKDIR=${PWD}/work/gcc-${VER}
INSTDIR=${PWD}/inst
mkdir -p ${WORKDIR}
mkdir -p ${INSTDIR}
cd ${WORKDIR}
if [ ! -e gcc-${VER}.tar.gz ]; then
	wget -O gcc-${VER}.tar.gz ftp://ftp.gwdg.de/pub/misc/gcc/releases/gcc-${VER}/gcc-${VER}.tar.gz
fi
if [ ! -e gcc-${VER} ]; then
	tar xvfz gcc-${VER}.tar.gz
fi
cd gcc-${VER}
./contrib/download_prerequisites
# 64bit only
./configure --disable-multilib --prefix=${INSTDIR} && make -j $(grep -c ^processor /proc/cpuinfo) && make install

* Compile cmake from scratch

cd
INSTDIR=${PWD}/inst
mkdir -p work
cd work
mkdir -p cmake
cd cmake
wget https://cmake.org/files/v3.9/cmake-3.9.3.tar.gz
tar xvfz cmake-3.9.3.tar.gz
cd cmake-3.9.3
CC=${INSTDIR}/bin/gcc CXX=${INSTDIR}/bin/g++ PATH=${INSTDIR}/bin:$PATH ./configure --prefix=${INSTDIR} && LD_LIBRARY_PATH="$HOME/inst/lib64" make -j $(grep -c ^processor /proc/cpuinfo) && LD_LIBRARY_PATH="$HOME/inst/lib64" make install

* Download the xmr-stak-cpu files and compile

cd
INSTDIR=${PWD}/inst
mkdir -p $HOME/work/xmr
cd $HOME/work/xmr
git clone https://github.com/fireice-uk/xmr-stak-cpu
cd xmr-stak-cpu
LD_LIBRARY_PATH="$HOME/inst/lib64" CC=${INSTDIR}/bin/gcc CXX=${INSTDIR}/bin/g++ PATH=${INSTDIR}/bin:$PATH cmake . -DCMAKE_INSTALL_PREFIX=$HOME/xmr-stak-cpu -DMICROHTTPD_REQUIRED=OFF && LD_LIBRARY_PATH="$HOME/inst/lib64" make && LD_LIBRARY_PATH="$HOME/inst/lib64" make install

This will compile the file with the new gcc and the new cmake. The result will be installed to $HOME/xmr-stak-cpu, it’s only the executable file and the config.txt.

To run, you must point your LD_LIBRARY_PATH to the correct directory, otherwise you’ll get strange errors:

LD_LIBRARY_PATH="$HOME/inst/lib64" ./xmr-stak-cpu

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