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<!DOCTYPE html><html lang="en"><head><meta charset="utf-8"><meta name="viewport" content="width=device-width, initial-scale=1.0"><meta name="generator" content="rustdoc"><meta name="description" content="Adds all the `#[cfg]` flags to the current compilation."><title>use_pyo3_cfgs in pyo3_build_config - Rust</title><script>if(window.location.protocol!=="file:")document.head.insertAdjacentHTML("beforeend","SourceSerif4-Regular-6b053e98.ttf.woff2,FiraSans-Regular-0fe48ade.woff2,FiraSans-Medium-e1aa3f0a.woff2,SourceCodePro-Regular-8badfe75.ttf.woff2,SourceCodePro-Semibold-aa29a496.ttf.woff2".split(",").map(f=>`<link rel="preload" as="font" type="font/woff2" crossorigin href="../static.files/${f}">`).join(""))</script><link rel="stylesheet" href="../static.files/normalize-9960930a.css"><link rel="stylesheet" href="../static.files/rustdoc-46132b98.css"><meta name="rustdoc-vars" data-root-path="../" data-static-root-path="../static.files/" data-current-crate="pyo3_build_config" data-themes="" data-resource-suffix="" data-rustdoc-version="1.85.1 (4eb161250 2025-03-15)" data-channel="1.85.1" data-search-js="search-75f5ac3e.js" data-settings-js="settings-0f613d39.js" ><script src="../static.files/storage-59e33391.js"></script><script defer src="sidebar-items.js"></script><script defer src="../static.files/main-5f194d8c.js"></script><noscript><link rel="stylesheet" href="../static.files/noscript-893ab5e7.css"></noscript><link rel="alternate icon" type="image/png" href="../static.files/favicon-32x32-6580c154.png"><link rel="icon" type="image/svg+xml" href="../static.files/favicon-044be391.svg"></head><body class="rustdoc fn"><!--[if lte IE 11]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif]--><nav class="mobile-topbar"><button class="sidebar-menu-toggle" title="show sidebar"></button></nav><nav class="sidebar"><div class="sidebar-crate"><h2><a href="../pyo3_build_config/index.html">pyo3_<wbr>build_<wbr>config</a><span class="version">0.24.1</span></h2></div><div class="sidebar-elems"><div id="rustdoc-modnav"></div></div></nav><div class="sidebar-resizer"></div><main><div class="width-limiter"><rustdoc-search></rustdoc-search><section id="main-content" class="content"><div class="main-heading"><span class="rustdoc-breadcrumbs"><a href="index.html">pyo3_build_config</a></span><h1>Function <span class="fn">use_pyo3_cfgs</span><button id="copy-path" title="Copy item path to clipboard">Copy item path</button></h1><rustdoc-toolbar></rustdoc-toolbar><span class="sub-heading"><a class="src" href="../src/pyo3_build_config/lib.rs.html#46-51">Source</a> </span></div><pre class="rust item-decl"><code>pub fn use_pyo3_cfgs()</code></pre><details class="toggle top-doc" open><summary class="hideme"><span>Expand description</span></summary><div class="docblock"><p>Adds all the <a href="index.html"><code>#[cfg]</code> flags</a> to the current compilation.</p>
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<p>This should be called from a build script.</p>
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<p>The full list of attributes added are the following:</p>
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<div><table><thead><tr><th>Flag</th><th>Description</th></tr></thead><tbody>
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<tr><td><code>#[cfg(Py_3_7)]</code>, <code>#[cfg(Py_3_8)]</code>, <code>#[cfg(Py_3_9)]</code>, <code>#[cfg(Py_3_10)]</code></td><td>These attributes mark code only for a given Python version and up. For example, <code>#[cfg(Py_3_7)]</code> marks code which can run on Python 3.7 <strong>and newer</strong>.</td></tr>
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<tr><td><code>#[cfg(Py_LIMITED_API)]</code></td><td>This marks code which is run when compiling with PyO3’s <code>abi3</code> feature enabled.</td></tr>
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<tr><td><code>#[cfg(PyPy)]</code></td><td>This marks code which is run when compiling for PyPy.</td></tr>
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<tr><td><code>#[cfg(GraalPy)]</code></td><td>This marks code which is run when compiling for GraalPy.</td></tr>
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</tbody></table>
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</div>
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<p>For examples of how to use these attributes,
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<a href="https://pyo3.rs/v0.24.1/building-and-distribution/multiple_python_versions.html">see PyO3’s guide</a>
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.</p>
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</div></details></section></div></main></body></html> |