Download, Build and Install Make 3.81 to a Local Directory From a tar.gz

This post lists the instructions to download, build and install Make 3.81 to a local directory.
Before running these instructions CD into a directory you want to install in.
Commands
# Save directory
INSTALLDIR=$(pwd)
# Put a custom bin folder in place and update the path to check it first
LOCALTOOLS=$(pwd)/tools
echo $LOCALTOOLS
mkdir -p $LOCALTOOLS
echo export PATH=$LOCALTOOLS/bin:$PATH > set_env.sh
source ./set_env.sh
# Test it
mkdir -p $LOCALTOOLS/bin
echo echo Hello > $LOCALTOOLS/bin/test-set_env.sh
chmod +x $LOCALTOOLS/bin/test-set_env.sh
test-set_env.sh # You should see “Hello”
#Get and install make-3.81 locally
CURDIRBEFOREMAKE=$(pwd)
LOCALPACKAGE=$(pwd)/package
echo $LOCALPACKAGE
mkdir -p $LOCALPACKAGE
cd $LOCALPACKAGE
wget https://ftp.gnu.org/gnu/make/make-3.81.tar.gz
tar -xvzf $LOCALPACKAGE/make-3.81.tar.gz
cd make-3.81
./configure –prefix=$LOCALTOOLS
make
sudo make install
cd $CURDIRBEFOREMAKE
#Test make
cd $INSTALLDIR
source ./set_env.sh
which make # you should see $LOCALTOOLS/bin/make
make –version # should show GNU Make 3.81
Reference
GNU image from link.