The following uses an 8GB Raspberry Pi 4.
Update and upgrade your installation
sudo apt update
sudo apt upgrade
Note: LLVM suggested apt call includes clangd, however it does not appear on the “current” Raspbian distribution (though I noted my version of CLANG is version 7 so later distributions might contain it).
Check it is in place.
clang++ --version
#include <iostream>
int main(){
std::cout<<"Hello world\n";
return 0;
}
Save the file to a specific folder (I chose ~/Documents/Cplusplus/helloworld )
Change the working folder to its location
cd ~/Documents/Cplusplus/helloworld
Compile:
clang++ -std=c++17 -Wall -pedantic helloworld .cpp -o helloworld
Run
./helloworld
Open Visual Studio Code and install the install the C/C++ extension (C/C++ from Microsoft).
Install CLANG
apt-get install clang-format clang-tidy clang-tools clang libc++-dev libc++1 libc++abi-dev libc++abi1 libclang-dev libclang1 liblldb-dev libllvm-ocaml-dev libomp-dev libomp5 lld lldb llvm-dev llvm-runtime llvm python-clangNote: LLVM suggested apt call includes clangd, however it does not appear on the “current” Raspbian distribution (though I noted my version of CLANG is version 7 so later distributions might contain it).
Check it is in place.
clang++ --version
clang version 7.0.1-8+rpi3+deb10u2 (tags/RELEASE_701/final)
Target: armv6k-unknown-linux-gnueabihf
Thread model: posix
InstalledDir: /usr/bin
Hello World
Create a C++ source file#include <iostream>
int main(){
std::cout<<"Hello world\n";
return 0;
}
Save the file to a specific folder (I chose ~/Documents/Cplusplus/helloworld )
Change the working folder to its location
cd ~/Documents/Cplusplus/helloworld
Compile:
clang++ -std=c++17 -Wall -pedantic helloworld .cpp -o helloworld
Run
./helloworld
Install Visual Studio Code (Other IDEs are available)
Raspberry Pi has Visual Studio Code in its repository
sudo apt install codeOpen Visual Studio Code and install the install the C/C++ extension (C/C++ from Microsoft).
Configuring Visual Studio Code
Other descriptions of configuring Visual Studio include additional editing of files, but the Raspberry Pi repository seems to cover a lot of it.Open the folder in Visual Studio.
Open the CPP file.
Click on Run and select Start Debugging.
From the list of environments select C++(GDB/LLDB)
Select g++.exe - Build and debug active file.
This creates a new folder named .vscode in the current folder.
Within that folder are two JSON files: tasks.json and launch.json
The file tasks.json contains the arguments and the location of the clang compiler front end.
{
"tasks": [
{
"type": "cppbuild",
"label": "C/C++: clang++ build active file",
"command": "/usr/bin/clang++",
"args": [
"-fdiagnostics-color=always",
"-g",
"${file}",
"-o",
"${fileDirname}/${fileBasenameNoExtension}"
],
"options": {
"cwd": "${fileDirname}"
},
"problemMatcher": [
"$gcc"
],
"group": {
"kind": "build",
"isDefault": true
},
"detail": "Task generated by Debugger."
}
],
"version": "2.0.0"
}
Use the above file as a reference.
The launch.json file contains information about what happens when Visual Studio Code starts to run the compilation.
{
// Use IntelliSense to learn about possible attributes.
// Hover to view descriptions of existing attributes.
// For more information, visit: https://go.microsoft.com/fwlink/?linkid=830387
"version": "0.2.0",
"configurations": [
{
"name": "clang++ - Build and debug active file",
"type": "cppdbg",
"request": "launch",
"program": "${fileDirname}/${fileBasenameNoExtension}",
"args": [],
"stopAtEntry": false,
"cwd": "${fileDirname}",
"environment": [],
"externalConsole": false,
"MIMode": "lldb",
"targetArchitecture": "ARM64",
"setupCommands": [
{
"description": "Enable pretty-printing for gdb",
"text": "-enable-pretty-printing",
"ignoreFailures": true
}
],
"preLaunchTask": "C/C++: clang++ build active file",
"miDebuggerPath": "/usr/bin/lldb-mi"
}
]
}
The key element that is not in the default configurations elements is the targetArchitecture:
"targetArchitecture": "ARM64"
Add this to the file as shown above.
This removes the “Warning: Debuggee TargetArchitecture not detected, assuming x86_64.” warning message.
References
https://apt.llvm.org/https://code.visualstudio.com/docs/setup/raspberry-pi
https://www.raspberrypi.com/news/visual-studio-code-comes-to-raspberry-pi/
https://solarianprogrammer.com/2018/04/22/raspberry-pi-raspbian-install-clang-compile-cpp-17-programs/
https://solarianprogrammer.com/2021/06/11/install-clang-windows-msys2-mingw-w64/
https://johnnn.tech/q/vscode-lldb-on-macos-error-when-starting-debugging-session/
https://code.visualstudio.com/updates/v1_50#_linux-arm-builds
