Commands to install glibc 2.34 to Ubuntu 20.04 and patch latest neovim binary to run

notes.sh

## Prepare Ubuntu 20.04
sudo apt install build-essential
sudo apt install patchelf unzip bison gawk

## neovim prerelease:
https://github.com/neovim/neovim/releases
https://github.com/neovim/neovim/releases/tag/nightly

# e.g.,
cd ~/.local
https://github.com/neovim/neovim/releases/download/nightly/nvim-linux-x86_64.tar.gz
tar xzf nvim-linux-x86_64.tar.gz
mkdir bin
cd bin
ln -s ../nvim-linux-x86_64/bin/nvim
# (Then add ~/.local/bin to PATH environment variable)

## Script for downloading and building, installing glibc-2.34 to ~/.local/glibc-2.34
#!/bin/bash
set -x
HERE=`pwd`
MY_VER=2.34
mkdir -p src glibc-${MY_VER}
cd src
wget http://ftp.gnu.org/gnu/libc/glibc-${MY_VER}.tar.gz
tar -xvzf glibc-${MY_VER}.tar.gz
rm -rf glibc-${MY_VER}-build
mkdir -p glibc-${MY_VER}-build
cd glibc-${MY_VER}-build
$HERE/src/glibc-${MY_VER}/configure --prefix=$HERE/glibc-${MY_VER}
make
make install

## Script for patching the binary:
#!/bin/bash
patchelf \
    --set-interpreter ~/.local/glibc-2.34/lib/ld-linux-x86-64.so.2 \
    --set-rpath ~/.local/glibc-2.34/lib:/lib/x86_64-linux-gnu \
    ~/.local/nvim-linux-x86_64/bin/nvim
patchelf --print-interpreter --print-rpath ~/.local/nvim-linux-x86_64/bin/nvim