Install cross compiler arm none liunx gnueabihf

Preface

This tutorial is for ubuntu Installation under system arm Cross compiler .
Cross compiler version ：9.2-2019.12-x86_64
ubuntu Compilation ：18.04

Download cross compiler

GNU Official website There is the latest gcc compiler , There are already 2021.07 Version of , But our project still uses 2019.12 Version of compiler , So I still installed the old , The installation steps are the same .

GNU The official website server is slow to download abroad , So here you can download from Tsinghua mirror

wget https://mirrors.tuna.tsinghua.edu.cn/armbian-releases/_toolchain/gcc-arm-9.2-2019.12-x86_64-arm-none-linux-gnueabihf.tar.xz

decompression

First create a directory to store the cross compiler （ You can also put it elsewhere , The last step is to set the environment variable correctly ）

sudo mkdir /usr/local/arm

Move to the directory where you downloaded the compressed package , Copy the downloaded compressed package to /usr/local/arm/ Under the table of contents , Pay attention to the need to use sudo

sudo cp gcc-arm-9.2-2019.12-x86_64-arm-none-linux-gnueabihf.tar.xz /usr/local/arm/ -f

Move to this directory /usr/local/arm/

cd /usr/local/arm/

Decompress the package ：
Method 1 ：
Look at the package suffix xxx.tar.xz It is a two-level compressed package , have access to xz Decompress the instructions to get .tar, Reuse tar Command decompression .
xz Instruction syntax ：

sudo xz -d gcc-arm-9.2-2019.12-x86_64-arm-none-linux-gnueabihf.tar.xz

sudo tar -xvf gcc-arm-9.2-2019.12-x86_64-arm-none-linux-gnueabihf.tar

Method 2 ：
Use it directly tar decompression

sudo tar -vxf gcc-arm-9.2-2019.12-x86_64-arm-none-linux-gnueabihf.tar.xz

Get the unzipped directory in blue

Add environment variables ：

Use cd The command moves to gcc-arm-9.2-2019.12-x86_64-arm-none-linux-gnueabihf/bin Under the table of contents , Use pwd You can get the absolute path , You can paste it directly later .

Use this instruction to modify the file and add environment variables

sudo vi /etc/profile

Add... At the end of the text

export PATH=$PATH:/usr/local/arm/gcc-arm-9.2-2019.12-x86_64-arm-none-linux-gnueabihf/bin

notes ：/usr/local/arm/gcc-arm-9.2-2019.12-x86_64-arm-none-linux-gnueabihf/bin Is the absolute address just obtained .
And then restart linux Otherwise, it will prompt that the instruction cannot be found
Input query gcc Version of the directive ：

arm-none-linux-gnueabihf-gcc -v

So the installation is successful .

Install related libraries

sudo apt-get update

sudo apt-get install lsb-core lib32stdc++6

Mainly, our computers are 64 Bit , then arm Mostly 32 The lack of dependent libraries

Reference material

TVM Study （ Four ） Record Install cross compiler arm-none-liunx-gnueabihf
The punctual atoms STM32MP157 The embedded Linux Drive development guide V2.0 The first 4.3 Section