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menu__link--sublist menu__link--sublist-caret" role=button aria-expanded=false href=/docs/legacy/native-modules-intro>Legacy Architecture</a></div></ul></nav></div></div></aside><main class=docMainContainer_a9sJ><div class="container padding-top--md padding-bottom--lg"><div class=row><div class="col docItemCol_Qr34"><div class=docItemContainer_tjFy><article><div class="tocCollapsible_wXna theme-doc-toc-mobile tocMobile_Ojys"><button type=button class="clean-btn tocCollapsibleButton_iI2p">On this page</button></div><div class="theme-doc-markdown markdown"><header><h1>Linking Libraries</h1></header><p>Not every app uses all the native capabilities, and including the code to support all those features would impact the binary size... But we still want to support adding these features whenever you need them.</p> 5<p>With that in mind we exposed many of these features as independent static libraries.</p> 6<p>For most of the libs it will be as quick as dragging two files, sometimes a third step will be necessary, but no more than that.</p> 7<div class="theme-admonition theme-admonition-note admonition_WCGJ alert alert--secondary"><div class=admonitionHeading_GCBg><span class=admonitionIcon_L39b><svg viewBox="0 0 14 16"><path fill-rule=evenodd d="M6.3 5.69a.942.942 0 0 1-.28-.7c0-.28.09-.52.28-.7.19-.18.42-.28.7-.28.28 0 .52.09.7.28.18.19.28.42.28.7 0 .28-.09.52-.28.7a1 1 0 0 1-.7.3c-.28 0-.52-.11-.7-.3zM8 7.99c-.02-.25-.11-.48-.31-.69-.2-.19-.42-.3-.69-.31H6c-.27.02-.48.13-.69.31-.2.2-.3.44-.31.69h1v3c.02.27.11.5.31.69.2.2.42.31.69.31h1c.27 0 .48-.11.69-.31.2-.19.3-.42.31-.69H8V7.98v.01zM7 2.3c-3.14 0-5.7 2.54-5.7 5.68 0 3.14 2.56 5.7 5.7 5.7s5.7-2.55 5.7-5.7c0-3.15-2.56-5.69-5.7-5.69v.01zM7 .98c3.86 0 7 3.14 7 7s-3.14 7-7 7-7-3.12-7-7 3.14-7 7-7z"/></svg></span>note</div><div class=admonitionContent_pbrs><p>All the libraries we ship with React Native live in the <code>Libraries</code> folder in the root of the repository. Some of them are pure JavaScript, and you only need to <code>require</code> it. 8Other libraries also rely on some native code, in that case you'll have to add these files to your app, otherwise the app will throw an error as soon as you try to use the library.</div></div> 9<h2 class="anchor anchorWithStickyNavbar_JmGV" id=here-are-the-few-steps-to-link-your-libraries-that-contain-native-code>Here are the few steps to link your libraries that contain native code<a href=#here-are-the-few-steps-to-link-your-libraries-that-contain-native-code class=hash-link aria-label="Direct link to Here are the few steps to link your libraries that contain native code" title="Direct link to Here are the few steps to link your libraries that contain native code">​</a></h2> 10<h3 class="anchor anchorWithStickyNavbar_JmGV" id=automatic-linking>Automatic linking<a href=#automatic-linking class=hash-link aria-label="Direct link to Automatic linking" title="Direct link to Automatic linking">​</a></h3> 11<p>Install a library with native dependencies:</p> 12<div class="language-shell codeBlockContainer_mQmQ theme-code-block" style=--prism-color:#FFFFFF;--prism-background-color:#282C34><div class=codeBlockTitle_kY6l>shell</div><div class=codeBlockContent_t_Hd><pre tabindex=0 class="prism-code language-shell codeBlock_RMoD thin-scrollbar" style=color:#FFFFFF;background-color:#282C34><code class=codeBlockLines_AclH><span class=token-line style=color:#FFFFFF><span class="token function" style=color:#79b6f2>npm</span><span class="token plain"> </span><span class="token function" style=color:#79b6f2>install</span><span class="token plain"> </span><span class="token operator" style=color:#fc929e>&lt;</span><span class="token plain">library-with-native-dependencies</span><span class="token operator" style=color:#fc929e>></span><span class="token plain"> </span><span class="token parameter variable" style=color:#cb4b16>--save</span><br></span></code></pre></div></div> 13<div class="theme-admonition theme-admonition-info admonition_WCGJ alert alert--info"><div class=admonitionHeading_GCBg><span class=admonitionIcon_L39b><svg viewBox="0 0 14 16"><path fill-rule=evenodd d="M7 2.3c3.14 0 5.7 2.56 5.7 5.7s-2.56 5.7-5.7 5.7A5.71 5.71 0 0 1 1.3 8c0-3.14 2.56-5.7 5.7-5.7zM7 1C3.14 1 0 4.14 0 8s3.14 7 7 7 7-3.14 7-7-3.14-7-7-7zm1 3H6v5h2V4zm0 6H6v2h2v-2z"/></svg></span>info</div><div class=admonitionContent_pbrs><p><code>--save</code> or <code>--save-dev</code> flag is very important for this step. React Native will link your libs based on <code>dependencies</code> and <code>devDependencies</code> in your <code>package.json</code> file.</div></div> 14<p>That's it! Next time you build your app the native code will be linked thanks to the <a href=https://github.com/react-native-community/cli/blob/main/docs/autolinking.md target=_blank rel="noopener noreferrer">autolinking</a> mechanism.</p> 15<h3 class="anchor anchorWithStickyNavbar_JmGV" id=manual-linking>Manual linking<a href=#manual-linking class=hash-link aria-label="Direct link to Manual linking" title="Direct link to Manual linking">​</a></h3> 16<h4 class="anchor anchorWithStickyNavbar_JmGV" id=step-1>Step 1<a href=#step-1 class=hash-link aria-label="Direct link to Step 1" title="Direct link to Step 1">​</a></h4> 17<p>If the library has native code, there must be an <code>.xcodeproj</code> file inside its folder. Drag this file to your project on Xcode (usually under the <code>Libraries</code> group on Xcode);</p> 18<p><img decoding=async loading=lazy src=/assets/images/AddToLibraries-92a6a7f58c75a8344d9bbeeae4ac167b.png width=2560 height=1552 class=img_SS3x></p> 19<h4 class="anchor anchorWithStickyNavbar_JmGV" id=step-2>Step 2<a href=#step-2 class=hash-link aria-label="Direct link to Step 2" title="Direct link to Step 2">​</a></h4> 20<p>Click on your main project file (the one that represents the <code>.xcodeproj</code>) select <code>Build Phases</code> and drag the static library from the <code>Products</code> folder inside the Library you are importing to <code>Link Binary With Libraries</code></p> 21<p><img decoding=async loading=lazy src=/assets/images/AddToBuildPhases-3e79422ff24780db618eae2d7a5ea604.png width=2560 height=1564 class=img_SS3x></p> 22<h4 class="anchor anchorWithStickyNavbar_JmGV" id=step-3>Step 3<a href=#step-3 class=hash-link aria-label="Direct link to Step 3" title="Direct link to Step 3">​</a></h4> 23<p>Not every library will need this step, what you need to consider is:</p> 24<p><em>Do I need to know the contents of the library at compile time?</em></p> 25<p>What that means is, are you using this library on the native side or only in JavaScript? If you are only using it in JavaScript, you are good to go!</p> 26<p>If you do need to call it from native, then we need to know the library's headers. To achieve that you have to go to your project's file, select <code>Build Settings</code> and search for <code>Header Search Paths</code>. There you should include the path to your library. (This documentation used to recommend using <code>recursive</code>, but this is no longer recommended, as it can cause subtle build failures, especially with CocoaPods.)</p> 27<p><img decoding=async loading=lazy src=/assets/images/AddToSearchPaths-7b278a6ea5ef28cfa94e8d22da5a8b13.png width=2706 height=1708 class=img_SS3x></div><footer class="theme-doc-footer docusaurus-mt-lg"><div class="theme-doc-footer-edit-meta-row row"><div class=editButtons_t0bR><a href=https://github.com/facebook/react-native-website/edit/main/docs/linking-libraries-ios.md target=_blank rel="noopener noreferrer" class=theme-edit-this-page><svg fill=currentColor height=20 width=20 viewBox="0 0 40 40" class=iconEdit_bHB7 aria-hidden=true><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"/></g></svg>Edit page for next release</a><a 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