# Conan — Open-Source C/C++ Package Manager

> A decentralized package manager for C and C++ that handles dependency resolution, binary management, and cross-platform builds.

## Install

Save as a script file and run:

# Conan — Open-Source C/C++ Package Manager

## Quick Use
```bash
pip install conan
conan profile detect
conan install . --output-folder=build --build=missing
cmake --preset conan-release
cmake --build --preset conan-release
```

## Introduction
Conan solves the long-standing dependency management problem for C and C++. Unlike languages with built-in package ecosystems, C/C++ projects historically relied on manual library management or system packages. Conan provides a decentralized, cross-platform solution that integrates with CMake, MSBuild, Meson, and other build systems to fetch, build, and cache binary packages for any platform and compiler combination.

## What Conan Does
- Resolves and installs C/C++ library dependencies from ConanCenter or private servers
- Manages pre-built binaries for specific OS, compiler, and architecture combinations
- Generates build system integration files for CMake, Meson, MSBuild, and others
- Supports creating and publishing your own packages to private or public repositories
- Handles transitive dependencies and version conflict resolution

## Architecture Overview
Conan uses a client-server model. The Conan client reads a `conanfile.py` or `conanfile.txt` that declares dependencies, then resolves versions from one or more remote servers. For each dependency, Conan checks if a compatible binary exists in the local cache or remote. If not, it builds from source using the recipe. Packages are identified by name, version, user, channel, and a settings hash (OS, compiler, build type) to store multiple binary variants.

## Self-Hosting & Configuration
- Install via pip: `pip install conan`
- Run `conan profile detect` to auto-configure your compiler and platform settings
- Declare dependencies in `conanfile.txt` or `conanfile.py` at the project root
- Host a private Conan server with Artifactory or the open-source `conan_server`
- Configure remotes with `conan remote add myremote https://my.server/artifactory/api/conan/repo`

## Key Features
- Binary management stores pre-compiled packages for every OS/compiler/arch combination
- ConanCenter hosts thousands of open-source C/C++ libraries with CI-verified recipes
- Lockfiles pin exact dependency versions and revisions for reproducible builds
- Python-based recipes (`conanfile.py`) allow full scripting of build and package logic
- Cross-compilation profiles let you target embedded, mobile, and other architectures

## Comparison with Similar Tools
- **vcpkg** — Microsoft-backed, ports-based; Conan offers decentralized servers and binary caching
- **CMake FetchContent** — downloads source at configure time; Conan provides binary caching and version management
- **Meson WrapDB** — Meson-specific; Conan works with any build system
- **Spack** — HPC-focused package manager; Conan targets general C/C++ development
- **Hunter** — CMake-driven; Conan has a larger package index and supports non-CMake builds

## FAQ
**Q: Does Conan work with CMake?**
A: Yes. Conan generates CMake toolchain and preset files so `find_package()` works seamlessly.

**Q: Can I host a private Conan repository?**
A: Yes. JFrog Artifactory has native Conan support, or you can run the lightweight open-source `conan_server`.

**Q: What is ConanCenter?**
A: The central public repository of open-source C/C++ packages maintained by the community with CI-verified recipes.

**Q: Does Conan support cross-compilation?**
A: Yes. Define a host profile and a build profile to cross-compile for targets like ARM, WebAssembly, or embedded platforms.

## Sources
- https://github.com/conan-io/conan
- https://docs.conan.io/

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Source: https://tokrepo.com/en/workflows/9d2c7daf-3a9a-11f1-9bc6-00163e2b0d79
Author: Script Depot