{"id":57900,"library":"autocfg","title":"autocfg","description":"Automatic cfg for Rust compiler features.","status":"active","version":"1.5.1","language":"rust","source_language":null,"source_url":"https://github.com/cuviper/autocfg","tags":["build","cfg","compiler","feature-detection"],"install":[{"cmd":"# Cargo.toml\n[dependencies]\nautocfg = \"1.5.1\"","lang":"toml","label":"Cargo.toml"},{"cmd":"cargo add autocfg","lang":"bash","label":"cargo add"}],"dependencies":[],"imports":[{"symbol":"AutoCfg","correct":"use autocfg::AutoCfg;"}],"quickstart":{"code":"use autocfg::AutoCfg;\n\nfn main() {\n    let ac = AutoCfg::new().unwrap();\n    if ac.probe_expression(\"std::mem::size_of::<usize>() == 8\") {\n        println!(\"64-bit platform\");\n    }\n}","lang":"rust","description":"Probes whether a Rust expression compiles to detect compiler features."},"warnings":[],"env_vars":null,"search_vec":"'autocfg':1 'automat':2 'build':8 'cfg':3,9 'compil':6,10 'detect':13 'featur':7,12 'feature-detect':11 'rust':5","created_at":"2026-06-16T16:03:58.319224+00:00","updated_at":"2026-06-16T16:03:58.319224+00:00","problems":[],"ecosystem":"crates","meta_description":null,"install_score":null,"quickstart_score":null,"quickstart_tag":null,"pypi_latest":null,"cli_name":null,"cli_version":null,"type":"library","homepage":"https://github.com/cuviper/autocfg","github":"https://github.com/cuviper/autocfg","docs":"https://docs.rs/autocfg/","changelog":null,"pypi":null,"npm":null,"openapi_spec":null,"status_page":null,"smithery":null,"categories":["build-tool"],"base_url":null,"auth_type":null,"provenance":{"verified_status":null,"verified_at":null,"last_verified":"2026-06-16","next_check":"2026-12-13","install_tag":null}}