run.sh

#!/bin/bash

set -ex

sudo apt-get -y install autoconf automake bison build-essential \
	diffutils flex gawk git gperf help2man make patch libncurses5-dev \
	texinfo wget xz-utils python python3 unzip libtool libtool-bin \
	aria2

aria2c -x 8 https://sourceforge.net/projects/raspberry-pi-cross-compilers/files/Raspberry%20Pi%20GCC%20Cross-Compiler%20Toolchains/Buster/GCC%2010.1.0/Raspberry%20Pi%203A%2B%2C%203B%2B%2C%204/cross-gcc-10.1.0-pi_3%2B.tar.gz/download
tar axf cross-gcc-10.1.0-pi_3+.tar.gz
sudo mkdir -p /opt
sudo mv cross-pi-gcc-10.1.0-2 /opt  

#wtf
temp="${PATH%\"}"
temp="${temp#\"}"
export PATH="${temp}:/opt/cross-pi-gcc-10.1.0-2/bin/"

git clone https://github.com/egtvedt/crosstool-ng && cd crosstool-ng && git checkout add-gcc-9.3-and-10.2-binutils-2.35 \
        && ./bootstrap && cd .. && pushd crosstool-ng && \
        ./configure && \
        make -j4 && \
        sudo make install && \
        popd

ct-ng build

tar acf x-tools.tar.xz ~/x-tools