Configuration

Build Configuration

Feature Flags

toml

[dependencies]
opencv = { 
    version = "0.88", 
    features = [
        "opencv-4",           # OpenCV 4.x support
        "buildtime-bindgen",  # Generate bindings at build time
        "contrib",            # Include contrib modules
        "clang-runtime"       # Runtime clang linking
    ]
}

Custom Build Script

1.Create build.rs:

rust

use std::env;
fn main() {
    if env::var("CARGO_FEATURE_CUSTOM_OPENCV").is_ok() {
        println!("cargo:rustc-link-lib=opencv_core");
        println!("cargo:rustc-link-lib=opencv_imgproc");
        println!("cargo:rustc-link-search=native=/usr/local/lib");
    }
}

2.Runtime Configuration Environment Variables

bash

# OpenCV library paths
export LD_LIBRARY_PATH=/usr/local/lib:$LD_LIBRARY_PATH
# OpenCV data directory
export OPENCV_DATA_DIR=/usr/share/opencv4
# Threading configuration
3.export OPENCV_THREAD_COUNT=4

Application Configuration

rust

use opencv::{core, Result};
fn configure_opencv() -> Result<()> {
    // Set number of threads
    core::set_num_threads(4)?;
    // Enable optimized code paths
    core::set_use_optimized(true)?;
    // Configure memory usage
    core::set_memory_limit(1024 * 1024 * 1024)?; // 1GB
    Ok(())
}

4.Logging Configuration

rust

use opencv::core;
fn setup_logging() {
    // Set log level
    core::utils::logging::set_log_level(core::utils::logging::LOG_LEVEL_INFO);
    // Redirect logs to custom handler
    core::utils::logging::register_log_callback(|level, message| {
        println!("[OpenCV {}] {}", level, message);
    });
}