DevContainer C++ environment

Small example C++ project configured for development inside a devcontainer.

Prerequisites

• Docker (for devcontainer) or a Linux environment with cmake, ninja, gcc/clang, gdb/lldb.
• VS Code: if you open this workspace in the devcontainer, VS Code will automatically install the recommended extensions listed in .devcontainer/devcontainer.json. If you open the folder without the devcontainer, please install the extensions listed below.

Recommended VS Code Extensions

When opening this workspace in the devcontainer, these extensions are automatically installed:

• C/C++ (ms-vscode.cpptools) — Microsoft's C/C++ extension for IntelliSense, debugging, and code exploration.
• CMake Tools (ms-vscode.cmake-tools) — Build, test, and debug support for CMake projects.
• Clang Language Server (llvm-vs-code-extensions.vscode-clangd) — Fast, accurate C/C++ language server (alternative to cpptools IntelliSense).

Build (Debug)

From the workspace root:

cmake -S . -B build -DCMAKE_BUILD_TYPE=Debug
cmake --build build -j $(nproc)

This produces the executable at build/main.

Debugging

Options:

• Use the CMake Tools extension: set the build variant to Debug, then CMake: Configure, CMake: Build, and CMake: Debug Target → choose main.
• Use the provided VS Code launch configurations (Run view) — Debug main (gdb), Debug main (lldb), or Debug main (gdb, external console).

Notes

• .gitignore excludes build/ and clangd cache files.
• The repository has been pushed to: https://github.com/theAndreas/DevContainer-Cpp-environment