# Building cpuminer-opt-rinhash on Windows

## Prerequisites

1. Install MSYS2 from https://www.msys2.org/
2. Open MSYS2 terminal and install build dependencies:

```bash
# Update package database
pacman -Syu

# Install build tools and dependencies
pacman -S mingw-w64-x86_64-gcc mingw-w64-x86_64-make mingw-w64-x86_64-curl mingw-w64-x86_64-jansson mingw-w64-x86_64-openssl mingw-w64-x86_64-gmp mingw-w64-x86_64-zlib mingw-w64-x86_64-autotools mingw-w64-x86_64-pkg-config
```

## Build Process

1. Open MSYS2 MinGW 64-bit terminal (not the regular MSYS2 terminal)
2. Navigate to the cpuminer directory
3. Run the build commands:

```bash
cd /f/projects/mines/rin/miner/cpuminer
./autogen.sh
./configure CFLAGS="-O3 -march=native -funroll-loops -fomit-frame-pointer"
make -j$(nproc)
```

## Alternative: Use Pre-built Binary

Since the repository already contains Windows DLLs and object files, you might be able to complete the build with just the linking step.

## Test the Miner

Once built, test with:
```bash
./cpuminer.exe -a rinhash -o stratum+tcp://your-pool:port -u your-username -p x -t 4
```