Install any version of GLIBC, configure automatically and setup an alias to patch binaries using that version.

install-glibc.sh

#!/bin/bash

######### YOU CAN CHANGE THESE ############
TMP_FOLDER="/tmp"
INSTALL_FOLDER="/opt"
BASE_URL="https://ftp.gnu.org"
RC_FILE=`echo ~/.my_functions`

if [ ! -f $RC_FILE ]; then
	touch $RC_FILE
	chmod +x $RC_FILE
fi

if [ "$EUID" -ne 0 ]; then
	echo "Please run this script as root."
	exit 1
fi

set -e

function show_patcher() {
	echo -e "Please add the following function to the rc file:\n"
	echo "function patchbin_$1() {" | tee -a $RC_FILE
	echo "	patchelf --set-interpreter $INSTALL_FOLDER/glibc-$1/lib/ld-linux-x86-64.so.2 --set-rpath $INSTALL_FOLDER/glibc-$1/ \$1" | tee -a $RC_FILE
	echo "}" | tee -a $RC_FILE
	echo -e "\nAlso, the function has been added to $RC_FILE. You can source it if you want."
}

if [[ -z $1 ]]; then
	echo "No arguments provided. Please provide the libc version you want to install"
	exit 1
fi


version=$1
ver_name=`echo $1 | tr '.' '-'`

echo "Downloading GLIBC $version"
cd /tmp/
file="glibc-$version"
tar_file="$file.tar.gz"
wget -c $BASE_URL/gnu/glibc/$tar_file
tar -zxvf $tar_file && cd $file
mkdir glibc-build && cd glibc-build
../configure --prefix="$INSTALL_FOLDER/glibc-$ver_name" --disable-werror
make
make install
cd ..
rm -rf glibc-build $file
show_patcher `echo $ver_name