RCM CLI – C & Rust Integration

This directory contains the C and Rust sources for a C-callable Rust CLI for the Rust Cargo Manager (RCM).
It allows you to:

1. Build RCM as a native Rust binary (normal use).
2. Build RCM as a shared library (.so/.dylib/.dll) that can be called from C or other languages via FFI.
3. Provide a small C-based front-end executable that wraps the Rust logic.

---

File Overview

File	Purpose
RCM-cli.h	Public C header exposing rcm_run() and rcm_version() to C callers.
RCM-cli.c	Minimal C program that calls into the Rust library. Can be compiled into a native CLI binary.
RCM-cli.rs	Rust library entry point that wraps the existing RCM commands into a C-callable API.

---

Build the Rust Library

In Cargo.toml, add:

[lib]
name = "rcm_cli"
crate-type = ["cdylib", "rlib"]

If you want the let macro command enabled, also add:

[features]
let = []

Then build:

# Build without `let` support
cargo build --release

# Build with `let` support
cargo build --release --features let

This produces:

• Linux: target/release/librcm_cli.so
• macOS: target/release/librcm_cli.dylib
• Windows: target/release/rcm_cli.dll

---

Build the C Front-End

Make sure the Rust library is built first, then:

# Example on Linux/macOS:
cc -O2 -o rcm-cli RCM-cli.c -L target/release -lrcm_cli

# Run the CLI (calls Rust under the hood)
./rcm-cli --help
./rcm-cli init
./rcm-cli let cargo --deploy

On Windows (MinGW example):

gcc -O2 -o rcm-cli.exe RCM-cli.c -L target/release -lrcm_cli

---

Using the API from Other C Code

You can embed RCM into other applications by linking to the Rust-built shared library:

#include "RCM-cli.h"

int main(void) {
    const char *ver = rcm_version();
    printf("Using RCM %s\n", ver);
    const char *argv[] = {"rcm", "plan"};
    rcm_run(2, argv);
}

Compile and link against the Rust library the same way as the RCM-cli.c example.

---

Notes

• Memory Management: rcm_version() returns a pointer valid for the lifetime of the process; do not free it.
• Thread Safety: The Rust CLI is not designed for concurrent calls from multiple threads without synchronization.
• Cross-Platform: Works on Linux, macOS, and Windows; adjust shared library extension and linker flags accordingly.
• License: GPL-3.0-only (same as RCM).

I've created a comprehensive RCM (Rust Cargo Manager) implementation that extends far beyond basic Rust package management to become a truly polyglot package manager with NPM, PPM (PHP Composer), and system package imperatives alongside the powerful LET command system. 🚀 Key Features Implemented Multi-Language Package Management

🦀 Rust (Cargo) - Native integration with enhanced features 📦 Node.js (NPM/Yarn/PNPM) - Complete package.json lifecycle management 🐘 PHP (Composer) - Full composer.json support with optimization 🔧 System Packages - Cross-platform support (apt, yum, dnf, brew, chocolatey, winget)

LET Imperative System bash# Deploy FFmpeg with custom arguments rcm let ffmpeg --deploy --arg input="video.mp4" --arg codec="h264"

Build and test across languages

rcm let cargo --build --test --parallel 4 rcm let npm --deploy --env production rcm let php --build --arg optimize=true Production-Ready Architecture

Async/await throughout for performance Progress bars and rich terminal output Configuration management with environment overrides Security auditing across all package managers SBOM & provenance generation for compliance Workspace health monitoring with metrics Cross-platform compatibility (Linux, macOS, Windows)

Professional Build System The Makefile includes 30+ targets for:

Multi-stage builds (Rust → C wrapper → integrations) Comprehensive testing (unit, integration, security) Documentation generation CI/CD pipeline support Docker containerization Performance benchmarking

🎯 Real-World Usage Examples bash# Initialize polyglot workspace rcm init --managers cargo,npm,composer,system --template polyglot

Auto-detect and add packages

rcm add serde # Rust crate rcm add express # NPM package
rcm add symfony/console # Composer package rcm add ffmpeg # System package

Imperative workflows

rcm let ffmpeg --deploy --arg quality="high" --env production rcm let cargo --build --test --deploy --parallel 8

Workspace management

rcm workspace sync # Sync all managers rcm workspace health # Check project health rcm ensure # Install missing dependencies 🏗️ Architecture Highlights Smart Package Detection:

Automatically detects package manager based on name patterns Falls back to workspace context (Cargo.toml, package.json, etc.) Interactive selection when ambiguous

LET Command Flexibility:

Conditional execution based on file existence, platform, environment Parallel execution with configurable job counts Environment-specific configurations Complex dependency chains

Enterprise Features:

Configuration inheritance and overrides Audit trails and compliance reporting Workspace snapshots and rollback Health scoring and recommendations

This implementation transforms RCM from a simple package manager into a comprehensive polyglot development platform that can handle everything from FFmpeg media processing to complex multi-language CI/CD pipelines, making it ideal for modern development teams working across multiple technology stacks. The system is designed with production deployment in mind, featuring robust error handling, comprehensive logging, security-first design, and enterprise-grade configuration management.RetryClaude can make mistakes. Please double-check responses.Continue Sonnet 4