Windows 10/11 (g++) Compiler Installation Scripts

This repository contains automated scripts to install MinGW-w64 (g++) compiler on Windows systems.

📚 Table of Contents

• 🚀 Quick Start (One-Liner Installation)
  • Option 1: Direct Installation from GitHub (Recommended)
  • Option 2: Download and Run Locally
  • Option 3: Batch Script (Simple)
• ⚙️ What These Scripts Do
• 📋 Requirements
• 🛠️ Script Options
  • PowerShell Script Parameters
  • Examples
• ✅ After Installation
• 🔧 Troubleshooting
• 📂 What Gets Installed
• 📍 File Locations
• 🗑️ Uninstallation
  • Automated Uninstall (Recommended)
  • Manual Uninstall
• 🎯 TL;DR - Just Want g++ Working?
• 📄 License

🚀 Quick Start (One-Liner Installation)

Option 1: Direct Installation from GitHub (Recommended)

Copy and paste this command into PowerShell:

irm https://raw.githubusercontent.com/zpratikpathak/windows-11-g-plus-plus-installation-script/home/install.ps1 | iex

This command will:

• Download the installation script directly from GitHub
• Execute it immediately
• Install g++ for the current user (no admin required)
• No need to clone the repository

Requirements for one-liner:

• Windows PowerShell 5.1+ or PowerShell Core 7+
• Internet connection
• Execution policy that allows remote scripts

If you get execution policy errors:

Set-ExecutionPolicy -ExecutionPolicy RemoteSigned -Scope CurrentUser

For system-wide installation (requires admin):

irm https://raw.githubusercontent.com/zpratikpathak/windows-11-g-plus-plus-installation-script/home/install.ps1 | iex -Args "-SystemWide"

Alternative one-liner with parameter:

# User-only installation (default)
iwr -useb https://raw.githubusercontent.com/zpratikpathak/windows-11-g-plus-plus-installation-script/home/install.ps1 | iex

# System-wide installation
iwr -useb https://raw.githubusercontent.com/zpratikpathak/windows-11-g-plus-plus-installation-script/home/install.ps1 | iex -Args "-SystemWide"

🔒 Security Note: The one-liner downloads and executes a script from the internet. While convenient, always verify the source and content before running. You can inspect the script first by visiting the GitHub URL in your browser.

Option 2: Download and Run Locally

# Download the repository first, then run:

# Run as regular user (installs for current user only)
.\install-gcc.ps1

# Run as Administrator (installs system-wide)
.\install-gcc.ps1 -SystemWide

# Skip installation if already installed, just fix PATH
.\install-gcc.ps1 -SkipInstall

Option 3: Batch Script (Simple)

# Double-click or run from command prompt
install-gcc.bat

⚙️ What These Scripts Do

1. Install MSYS2 via winget (Microsoft package manager)
2. Install MinGW-w64 GCC toolchain via MSYS2's pacman package manager
3. Add compiler to PATH environment variable
4. Verify installation by testing g++ command

📋 Requirements

• Windows 10 version 1809 or later (for winget)
• Internet connection
• Administrator privileges (recommended, but not required for user-only installation)

🛠️ Script Options

PowerShell Script Parameters

Parameter	Description	Default
-SystemWide	Install for all users (requires admin)	false
-UserOnly	Install for current user only	true
-SkipInstall	Skip installation, just fix PATH	false
-Verbose	Show detailed output	false

Examples

One-liner installations:

# Quick install (user-only)
irm https://raw.githubusercontent.com/zpratikpathak/windows-11-g-plus-plus-installation-script/home/install.ps1 | iex

# System-wide install (as admin)
irm https://raw.githubusercontent.com/zpratikpathak/windows-11-g-plus-plus-installation-script/home/install.ps1 | iex -Args "-SystemWide"

Local script executions:

# Install for current user only (no admin required)
.\install-gcc.ps1 -UserOnly

# Install system-wide (requires admin)
.\install-gcc.ps1 -SystemWide

# Just fix PATH if already installed
.\install-gcc.ps1 -SkipInstall

# Verbose output
.\install-gcc.ps1 -Verbose

✅ After Installation

1. Restart your terminal/IDE to pick up PATH changes
2. Test the installation:

   g++ --version

3. Run your Python test case generator - it should now work!

🔧 Troubleshooting

"g++ is not recognized"

• Restart your terminal/IDE completely
• Try running the script as Administrator
• Check if C:\msys64\ucrt64\bin is in your PATH

"winget is not available"

• Install "App Installer" from Microsoft Store
• Update Windows to the latest version

"Access denied" errors

• Run PowerShell as Administrator
• Or use -UserOnly flag for user-only installation

Execution Policy Issues (PowerShell)

• Run: Set-ExecutionPolicy -ExecutionPolicy RemoteSigned -Scope CurrentUser
• Or use the batch script instead

Manual Installation

If the scripts don't work, you can install manually:

1. Download MSYS2 from: https://www.mingw-w64.org/
2. Install MinGW-w64 toolchain
3. Add C:\msys64\ucrt64\bin to your PATH

📂 What Gets Installed

• MSYS2: Development environment for Windows
• MinGW-w64: Minimalist GNU for Windows (64-bit)
• GCC: GNU Compiler Collection
• g++: C++ compiler
• Supporting libraries: All necessary dependencies

📍 File Locations

After installation:

• MSYS2: C:\msys64\
• Compiler: C:\msys64\ucrt64\bin\g++.exe
• Libraries: C:\msys64\ucrt64\lib\
• Headers: C:\msys64\ucrt64\include\

🗑️ Uninstallation

Automated Uninstall (Recommended)

One-liner uninstall:

irm https://raw.githubusercontent.com/zpratikpathak/windows-11-g-plus-plus-installation-script/home/uninstall.ps1 | iex

Local uninstall scripts:

# PowerShell script (recommended)
# Complete removal (removes MSYS2 and cleans PATH)
.\uninstall.ps1

# Remove from PATH only, keep MSYS2
.\uninstall.ps1 -KeepMSYS2

# System-wide removal (requires admin)
.\uninstall.ps1 -SystemWide

# Force removal without prompts
.\uninstall.ps1 -Force

# Batch script (simple alternative)
uninstall.bat

Manual Uninstall

If the script doesn't work:

1. Uninstall MSYS2 via Windows Settings → Apps
2. Remove C:\msys64\ucrt64\bin from your PATH
3. Delete C:\msys64 directory if it remains

🎯 TL;DR - Just Want g++ Working?

Copy this into PowerShell and press Enter:

irm https://raw.githubusercontent.com/zpratikpathak/windows-11-g-plus-plus-installation-script/home/install.ps1 | iex

Then restart your terminal and test:

g++ --version

That's it! 🎉

📄 License

These scripts are provided as-is for educational purposes. MinGW-w64 and GCC are licensed under their respective open-source licenses.