fungos/cr — Cr.h: A Simple C Hot Reload Header-only Library

Description and use

**Brief Summary (2‑3 sentences)**
fungos/cr is a header‑only C library that provides simple hot‑reloading capabilities, letting developers rebuild and reload code at runtime with minimal boilerplate. With over 1.7 k GitHub stars, recent commits, and a clear README, it is a mature, community‑backed option for projects that need rapid iteration without restarting the whole application.

**Value**

• **Rapid development cycles:** By hot‑reloading compiled objects, developers can see code changes instantly, cutting down test‑and‑debug time.
• **Zero‑dependency integration:** Being a single header, it adds virtually no build complexity or external runtime requirements.
• **Broad applicability:** Works with any C/C++ codebase that can be modularized, making it suitable for games, embedded firmware, or scientific tools that benefit from live updates.

**Practical Adoption Path**

1. **Proof‑of‑concept:** Add cr.h to a small, non‑critical module (e.g., a plugin or a demo app) and verify that changes compile and reload as expected.
2. **Readme verification:** Follow the usage steps in the repository’s README to ensure the build flags and runtime hooks align with your build system (Make, CMake, etc.).
3. **Gradual rollout:** Once the PoC succeeds, replace static linking for additional modules, monitoring for any symbol‑collision or state‑preservation issues.
4. **Automated testing:** Integrate hot‑reload checks into CI to catch regressions early.

**Production Readiness**
The project scores high on production readiness: it shows recent activity (last commit 2026‑06‑23), strong community adoption (1,777 stars, 119 forks), and a clear C++ primary language. While no major metadata risks appear, a final review of the license (MIT‑style) and a quick security audit of the header are advisable. Assuming those checks pass, fungos/cr is ready for a serious pilot in production environments, especially where fast iteration outweighs the modest overhead of hot‑reloading.

Problem

fungos/cr may be useful when its README and activity match a concrete workflow.

Outcome

High for an OSS candidate: recent activity, adoption, and ecosystem signals are strong enough for a serious pilot.

Evidence

cr.h: A Simple C Hot Reload Header-only Library

Source