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class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Programming_language_specifications"> <div class="vector-toc-text"> <span class="vector-toc-numb">5</span> <span>Programming language specifications</span> </div> </a> <button aria-controls="toc-Programming_language_specifications-sublist" class="cdx-button cdx-button--weight-quiet cdx-button--icon-only vector-toc-toggle"> <span class="vector-icon mw-ui-icon-wikimedia-expand"></span> <span>Toggle Programming language specifications subsection</span> </button> <ul id="toc-Programming_language_specifications-sublist" class="vector-toc-list"> <li id="toc-Class_inheritance" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Class_inheritance"> <div class="vector-toc-text"> <span class="vector-toc-numb">5.1</span> <span>Class inheritance</span> </div> </a> <ul id="toc-Class_inheritance-sublist" class="vector-toc-list"> </ul> </li> </ul> </li> <li id="toc-See_also" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#See_also"> <div class="vector-toc-text"> <span class="vector-toc-numb">6</span> <span>See also</span> </div> </a> <ul id="toc-See_also-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-References" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#References"> <div class="vector-toc-text"> <span class="vector-toc-numb">7</span> <span>References</span> </div> </a> <ul id="toc-References-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-External_links" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#External_links"> <div class="vector-toc-text"> <span class="vector-toc-numb">8</span> <span>External links</span> </div> </a> <ul id="toc-External_links-sublist" class="vector-toc-list"> </ul> </li> </ul> </div> </div> </nav> </div> </div> <div class="mw-content-container"> <main id="content" class="mw-body"> <header class="mw-body-header vector-page-titlebar"> <nav aria-label="Contents" class="vector-toc-landmark"> <div id="vector-page-titlebar-toc" class="vector-dropdown vector-page-titlebar-toc vector-button-flush-left" title="Table of Contents" > <input type="checkbox" id="vector-page-titlebar-toc-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-page-titlebar-toc" class="vector-dropdown-checkbox " aria-label="Toggle the table of contents" > <label id="vector-page-titlebar-toc-label" for="vector-page-titlebar-toc-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only " aria-hidden="true" ><span class="vector-icon mw-ui-icon-listBullet mw-ui-icon-wikimedia-listBullet"></span> <span class="vector-dropdown-label-text">Toggle the table of contents</span> </label> <div class="vector-dropdown-content"> <div id="vector-page-titlebar-toc-unpinned-container" class="vector-unpinned-container"> </div> </div> </div> </nav> <h1 id="firstHeading" class="firstHeading mw-first-heading"><span class="mw-page-title-main">GNU Lesser General Public License</span></h1> <div id="p-lang-btn" class="vector-dropdown mw-portlet mw-portlet-lang" > <input type="checkbox" id="p-lang-btn-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-p-lang-btn" class="vector-dropdown-checkbox mw-interlanguage-selector" aria-label="Go to an article in another language. Available in 37 languages" > <label id="p-lang-btn-label" for="p-lang-btn-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--action-progressive mw-portlet-lang-heading-37" aria-hidden="true" ><span class="vector-icon mw-ui-icon-language-progressive mw-ui-icon-wikimedia-language-progressive"></span> <span class="vector-dropdown-label-text">37 languages</span> </label> <div class="vector-dropdown-content"> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li class="interlanguage-link interwiki-ar mw-list-item"><a href="https://ar.wikipedia.org/wiki/%D8%B1%D8%AE%D8%B5%D8%A9_%D8%AC%D9%86%D9%88_%D8%A7%D9%84%D8%B9%D9%85%D9%88%D9%85%D9%8A%D8%A9_%D8%A7%D9%84%D8%B5%D8%BA%D8%B1%D9%89" title="رخصة جنو العمومية الصغرى – Arabic" lang="ar" hreflang="ar" data-title="رخصة جنو العمومية الصغرى" data-language-autonym="العربية" data-language-local-name="Arabic" class="interlanguage-link-target"><span>العربية</span></a></li><li class="interlanguage-link interwiki-ast mw-list-item"><a href="https://ast.wikipedia.org/wiki/GNU_Lesser_General_Public_License" title="GNU Lesser General Public License – Asturian" lang="ast" hreflang="ast" data-title="GNU Lesser General Public License" data-language-autonym="Asturianu" data-language-local-name="Asturian" class="interlanguage-link-target"><span>Asturianu</span></a></li><li class="interlanguage-link interwiki-ca mw-list-item"><a href="https://ca.wikipedia.org/wiki/GNU_Lesser_General_Public_License" title="GNU Lesser General Public License – Catalan" lang="ca" hreflang="ca" data-title="GNU Lesser General Public License" data-language-autonym="Català" data-language-local-name="Catalan" class="interlanguage-link-target"><span>Català</span></a></li><li class="interlanguage-link interwiki-cs mw-list-item"><a href="https://cs.wikipedia.org/wiki/GNU_Lesser_General_Public_License" title="GNU Lesser General Public License – Czech" lang="cs" hreflang="cs" data-title="GNU Lesser General Public License" data-language-autonym="Čeština" data-language-local-name="Czech" class="interlanguage-link-target"><span>Čeština</span></a></li><li class="interlanguage-link interwiki-da mw-list-item"><a href="https://da.wikipedia.org/wiki/GNU_Lesser_General_Public_License" title="GNU Lesser General Public License – Danish" lang="da" hreflang="da" data-title="GNU Lesser General Public License" data-language-autonym="Dansk" data-language-local-name="Danish" class="interlanguage-link-target"><span>Dansk</span></a></li><li class="interlanguage-link interwiki-de mw-list-item"><a href="https://de.wikipedia.org/wiki/GNU_Lesser_General_Public_License" title="GNU Lesser General Public License – German" lang="de" hreflang="de" data-title="GNU Lesser General Public License" data-language-autonym="Deutsch" data-language-local-name="German" class="interlanguage-link-target"><span>Deutsch</span></a></li><li class="interlanguage-link interwiki-et mw-list-item"><a href="https://et.wikipedia.org/wiki/GNU_V%C3%A4hem_%C3%9Cldine_Avalik_Litsents" title="GNU Vähem Üldine Avalik Litsents – Estonian" lang="et" hreflang="et" data-title="GNU Vähem Üldine Avalik Litsents" data-language-autonym="Eesti" data-language-local-name="Estonian" class="interlanguage-link-target"><span>Eesti</span></a></li><li class="interlanguage-link interwiki-es mw-list-item"><a href="https://es.wikipedia.org/wiki/GNU_Lesser_General_Public_License" title="GNU Lesser General Public License – Spanish" lang="es" hreflang="es" data-title="GNU Lesser General Public License" data-language-autonym="Español" data-language-local-name="Spanish" class="interlanguage-link-target"><span>Español</span></a></li><li class="interlanguage-link interwiki-eu mw-list-item"><a href="https://eu.wikipedia.org/wiki/GNU_Lesser_General_Public_License" title="GNU Lesser General Public License – Basque" lang="eu" hreflang="eu" data-title="GNU Lesser General Public License" data-language-autonym="Euskara" data-language-local-name="Basque" class="interlanguage-link-target"><span>Euskara</span></a></li><li class="interlanguage-link interwiki-fa mw-list-item"><a href="https://fa.wikipedia.org/wiki/%D9%BE%D8%B1%D9%88%D8%A7%D9%86%D9%87_%DA%A9%D9%85%E2%80%8C%D8%AA%D8%B1_%D8%AC%D8%A7%D9%85%D8%B9_%D9%87%D9%85%DA%AF%D8%A7%D9%86%DB%8C_%DA%AF%D9%86%D9%88" title="پروانه کم‌تر جامع همگانی گنو – Persian" lang="fa" hreflang="fa" data-title="پروانه کم‌تر جامع همگانی گنو" data-language-autonym="فارسی" data-language-local-name="Persian" class="interlanguage-link-target"><span>فارسی</span></a></li><li class="interlanguage-link interwiki-fr mw-list-item"><a href="https://fr.wikipedia.org/wiki/Licence_publique_g%C3%A9n%C3%A9rale_limit%C3%A9e_GNU" title="Licence publique générale limitée GNU – French" lang="fr" hreflang="fr" data-title="Licence publique générale limitée GNU" data-language-autonym="Français" data-language-local-name="French" class="interlanguage-link-target"><span>Français</span></a></li><li class="interlanguage-link interwiki-ko mw-list-item"><a href="https://ko.wikipedia.org/wiki/GNU_%EC%95%BD%EC%86%8C_%EC%9D%BC%EB%B0%98_%EA%B3%B5%EC%A4%91_%EC%82%AC%EC%9A%A9_%ED%97%88%EA%B0%80%EC%84%9C" title="GNU 약소 일반 공중 사용 허가서 – Korean" lang="ko" hreflang="ko" data-title="GNU 약소 일반 공중 사용 허가서" data-language-autonym="한국어" data-language-local-name="Korean" class="interlanguage-link-target"><span>한국어</span></a></li><li class="interlanguage-link interwiki-id mw-list-item"><a href="https://id.wikipedia.org/wiki/Lisensi_Publik_Sedikit_Kurang_Umum_GNU" title="Lisensi Publik Sedikit Kurang Umum GNU – Indonesian" lang="id" hreflang="id" data-title="Lisensi Publik Sedikit Kurang Umum GNU" data-language-autonym="Bahasa Indonesia" data-language-local-name="Indonesian" class="interlanguage-link-target"><span>Bahasa Indonesia</span></a></li><li class="interlanguage-link interwiki-it mw-list-item"><a href="https://it.wikipedia.org/wiki/GNU_Lesser_General_Public_License" title="GNU Lesser General Public License – Italian" lang="it" hreflang="it" data-title="GNU Lesser General Public License" data-language-autonym="Italiano" data-language-local-name="Italian" class="interlanguage-link-target"><span>Italiano</span></a></li><li class="interlanguage-link interwiki-he mw-list-item"><a href="https://he.wikipedia.org/wiki/%D7%94%D7%A8%D7%99%D7%A9%D7%99%D7%95%D7%9F_%D7%94%D7%A6%D7%99%D7%91%D7%95%D7%A8%D7%99_%D7%94%D7%9B%D7%9C%D7%9C%D7%99_%D7%94%D7%9E%D7%95%D7%A7%D7%98%D7%9F_%D7%A9%D7%9C_%D7%92%D7%A0%D7%95" title="הרישיון הציבורי הכללי המוקטן של גנו – Hebrew" lang="he" hreflang="he" data-title="הרישיון הציבורי הכללי המוקטן של גנו" data-language-autonym="עברית" data-language-local-name="Hebrew" class="interlanguage-link-target"><span>עברית</span></a></li><li class="interlanguage-link interwiki-ka mw-list-item"><a href="https://ka.wikipedia.org/wiki/GNU_Lesser_General_Public_License" title="GNU Lesser General Public License – Georgian" lang="ka" hreflang="ka" data-title="GNU Lesser General Public License" data-language-autonym="ქართული" data-language-local-name="Georgian" class="interlanguage-link-target"><span>ქართული</span></a></li><li class="interlanguage-link interwiki-lt mw-list-item"><a href="https://lt.wikipedia.org/wiki/LGPL" title="LGPL – Lithuanian" lang="lt" hreflang="lt" data-title="LGPL" data-language-autonym="Lietuvių" data-language-local-name="Lithuanian" class="interlanguage-link-target"><span>Lietuvių</span></a></li><li class="interlanguage-link interwiki-hu mw-list-item"><a href="https://hu.wikipedia.org/wiki/GNU_Lesser_General_Public_License" title="GNU Lesser General Public License – Hungarian" lang="hu" hreflang="hu" data-title="GNU Lesser General Public License" data-language-autonym="Magyar" data-language-local-name="Hungarian" class="interlanguage-link-target"><span>Magyar</span></a></li><li class="interlanguage-link interwiki-ml mw-list-item"><a href="https://ml.wikipedia.org/wiki/%E0%B4%97%E0%B5%8D%E0%B4%A8%E0%B5%82_%E0%B4%B2%E0%B4%98%E0%B5%81_%E0%B4%B8%E0%B4%BE%E0%B5%BC%E0%B4%B5%E0%B5%8D%E0%B4%B5%E0%B4%9C%E0%B4%A8%E0%B4%BF%E0%B4%95_%E0%B4%85%E0%B4%A8%E0%B5%81%E0%B4%B5%E0%B4%BE%E0%B4%A6%E0%B4%AA%E0%B4%A4%E0%B5%8D%E0%B4%B0%E0%B4%82" title="ഗ്നൂ ലഘു സാർവ്വജനിക അനുവാദപത്രം – Malayalam" lang="ml" hreflang="ml" data-title="ഗ്നൂ ലഘു സാർവ്വജനിക അനുവാദപത്രം" data-language-autonym="മലയാളം" data-language-local-name="Malayalam" class="interlanguage-link-target"><span>മലയാളം</span></a></li><li class="interlanguage-link interwiki-ms mw-list-item"><a href="https://ms.wikipedia.org/wiki/Lesen_Awam_Am_Lemah_GNU" title="Lesen Awam Am Lemah GNU – Malay" lang="ms" hreflang="ms" data-title="Lesen Awam Am Lemah GNU" data-language-autonym="Bahasa Melayu" data-language-local-name="Malay" class="interlanguage-link-target"><span>Bahasa Melayu</span></a></li><li class="interlanguage-link interwiki-nl mw-list-item"><a href="https://nl.wikipedia.org/wiki/GNU_Lesser_General_Public_License" title="GNU Lesser General Public License – Dutch" lang="nl" hreflang="nl" data-title="GNU Lesser General Public License" data-language-autonym="Nederlands" data-language-local-name="Dutch" class="interlanguage-link-target"><span>Nederlands</span></a></li><li class="interlanguage-link interwiki-ja mw-list-item"><a href="https://ja.wikipedia.org/wiki/GNU_Lesser_General_Public_License" title="GNU Lesser General Public License – Japanese" lang="ja" hreflang="ja" data-title="GNU Lesser General Public License" data-language-autonym="日本語" data-language-local-name="Japanese" class="interlanguage-link-target"><span>日本語</span></a></li><li class="interlanguage-link interwiki-no mw-list-item"><a href="https://no.wikipedia.org/wiki/GNU_Lesser_General_Public_License" title="GNU Lesser General Public License – Norwegian Bokmål" lang="nb" hreflang="nb" data-title="GNU Lesser General Public License" data-language-autonym="Norsk bokmål" data-language-local-name="Norwegian Bokmål" class="interlanguage-link-target"><span>Norsk bokmål</span></a></li><li class="interlanguage-link interwiki-pl mw-list-item"><a href="https://pl.wikipedia.org/wiki/GNU_Lesser_General_Public_License" title="GNU Lesser General Public License – Polish" lang="pl" hreflang="pl" data-title="GNU Lesser General Public License" data-language-autonym="Polski" data-language-local-name="Polish" class="interlanguage-link-target"><span>Polski</span></a></li><li class="interlanguage-link interwiki-pt mw-list-item"><a href="https://pt.wikipedia.org/wiki/GNU_Lesser_General_Public_License" title="GNU Lesser General Public License – Portuguese" lang="pt" hreflang="pt" data-title="GNU Lesser General Public License" data-language-autonym="Português" data-language-local-name="Portuguese" class="interlanguage-link-target"><span>Português</span></a></li><li class="interlanguage-link interwiki-ru mw-list-item"><a href="https://ru.wikipedia.org/wiki/GNU_Lesser_General_Public_License" title="GNU Lesser General Public License – Russian" lang="ru" hreflang="ru" data-title="GNU Lesser General Public License" data-language-autonym="Русский" data-language-local-name="Russian" class="interlanguage-link-target"><span>Русский</span></a></li><li class="interlanguage-link interwiki-simple mw-list-item"><a href="https://simple.wikipedia.org/wiki/GNU_Lesser_General_Public_License" title="GNU Lesser General Public License – Simple English" lang="en-simple" hreflang="en-simple" data-title="GNU Lesser General Public License" data-language-autonym="Simple English" data-language-local-name="Simple English" class="interlanguage-link-target"><span>Simple English</span></a></li><li class="interlanguage-link interwiki-sk mw-list-item"><a href="https://sk.wikipedia.org/wiki/GNU_Lesser_General_Public_License" title="GNU Lesser General Public License – Slovak" lang="sk" hreflang="sk" data-title="GNU Lesser General Public License" data-language-autonym="Slovenčina" data-language-local-name="Slovak" class="interlanguage-link-target"><span>Slovenčina</span></a></li><li class="interlanguage-link interwiki-fi mw-list-item"><a href="https://fi.wikipedia.org/wiki/GNU_Lesser_General_Public_License" title="GNU Lesser General Public License – Finnish" lang="fi" hreflang="fi" data-title="GNU Lesser General Public License" data-language-autonym="Suomi" data-language-local-name="Finnish" class="interlanguage-link-target"><span>Suomi</span></a></li><li class="interlanguage-link interwiki-sv mw-list-item"><a href="https://sv.wikipedia.org/wiki/GNU_Lesser_General_Public_License" title="GNU Lesser General Public License – Swedish" lang="sv" hreflang="sv" data-title="GNU Lesser General Public License" data-language-autonym="Svenska" data-language-local-name="Swedish" class="interlanguage-link-target"><span>Svenska</span></a></li><li class="interlanguage-link interwiki-tl mw-list-item"><a href="https://tl.wikipedia.org/wiki/GNU_Lesser_General_Public_License" title="GNU Lesser General Public License – Tagalog" lang="tl" hreflang="tl" data-title="GNU Lesser General Public License" data-language-autonym="Tagalog" data-language-local-name="Tagalog" class="interlanguage-link-target"><span>Tagalog</span></a></li><li class="interlanguage-link interwiki-th mw-list-item"><a href="https://th.wikipedia.org/wiki/%E0%B8%AA%E0%B8%B1%E0%B8%8D%E0%B8%8D%E0%B8%B2%E0%B8%AD%E0%B8%99%E0%B8%B8%E0%B8%8D%E0%B8%B2%E0%B8%95%E0%B8%AA%E0%B8%B2%E0%B8%98%E0%B8%B2%E0%B8%A3%E0%B8%93%E0%B8%B0%E0%B8%97%E0%B8%B1%E0%B9%88%E0%B8%A7%E0%B9%84%E0%B8%9B%E0%B9%81%E0%B8%9A%E0%B8%9A%E0%B8%9C%E0%B9%88%E0%B8%AD%E0%B8%99%E0%B8%9B%E0%B8%A3%E0%B8%99%E0%B8%82%E0%B8%AD%E0%B8%87%E0%B8%81%E0%B8%99%E0%B8%B9" title="สัญญาอนุญาตสาธารณะทั่วไปแบบผ่อนปรนของกนู – Thai" lang="th" hreflang="th" data-title="สัญญาอนุญาตสาธารณะทั่วไปแบบผ่อนปรนของกนู" data-language-autonym="ไทย" data-language-local-name="Thai" class="interlanguage-link-target"><span>ไทย</span></a></li><li class="interlanguage-link interwiki-tr mw-list-item"><a href="https://tr.wikipedia.org/wiki/GNU_K%C4%B1s%C4%B1tl%C4%B1_Genel_Kamu_Lisans%C4%B1" title="GNU Kısıtlı Genel Kamu Lisansı – Turkish" lang="tr" hreflang="tr" data-title="GNU Kısıtlı Genel Kamu Lisansı" data-language-autonym="Türkçe" data-language-local-name="Turkish" class="interlanguage-link-target"><span>Türkçe</span></a></li><li class="interlanguage-link interwiki-uk mw-list-item"><a href="https://uk.wikipedia.org/wiki/GNU_Lesser_General_Public_License" title="GNU Lesser General Public License – Ukrainian" lang="uk" hreflang="uk" data-title="GNU Lesser General Public License" data-language-autonym="Українська" data-language-local-name="Ukrainian" class="interlanguage-link-target"><span>Українська</span></a></li><li class="interlanguage-link interwiki-ur mw-list-item"><a href="https://ur.wikipedia.org/wiki/%DA%AF%D9%86%D9%88_%D8%B9%D8%A7%D9%85_%D8%B9%D9%88%D8%A7%D9%85%DB%8C_%D8%A7%D8%AC%D8%A7%D8%B2%D8%AA_%D9%86%D8%A7%D9%85%DB%81_%D8%B5%D8%BA%D8%B1%DB%8C" title="گنو عام عوامی اجازت نامہ صغری – Urdu" lang="ur" hreflang="ur" data-title="گنو عام عوامی اجازت نامہ صغری" data-language-autonym="اردو" data-language-local-name="Urdu" class="interlanguage-link-target"><span>اردو</span></a></li><li class="interlanguage-link interwiki-vi mw-list-item"><a href="https://vi.wikipedia.org/wiki/Gi%E1%BA%A5y_ph%C3%A9p_C%C3%B4ng_c%E1%BB%99ng_GNU_H%E1%BA%A1n_ch%E1%BA%BF" title="Giấy phép Công cộng GNU Hạn chế – Vietnamese" lang="vi" hreflang="vi" data-title="Giấy phép Công cộng GNU Hạn chế" data-language-autonym="Tiếng Việt" data-language-local-name="Vietnamese" class="interlanguage-link-target"><span>Tiếng Việt</span></a></li><li class="interlanguage-link interwiki-zh mw-list-item"><a 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.infobox-3cols-child{margin:auto}.mw-parser-output .infobox .navbar{font-size:100%}@media screen{html.skin-theme-clientpref-night .mw-parser-output .infobox-full-data:not(.notheme)>div:not(.notheme)[style]{background:#1f1f23!important;color:#f8f9fa}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .infobox-full-data:not(.notheme) div:not(.notheme){background:#1f1f23!important;color:#f8f9fa}}@media(min-width:640px){body.skin--responsive .mw-parser-output .infobox-table{display:table!important}body.skin--responsive .mw-parser-output .infobox-table>caption{display:table-caption!important}body.skin--responsive .mw-parser-output .infobox-table>tbody{display:table-row-group}body.skin--responsive .mw-parser-output .infobox-table tr{display:table-row!important}body.skin--responsive .mw-parser-output .infobox-table th,body.skin--responsive .mw-parser-output .infobox-table td{padding-left:inherit;padding-right:inherit}}</style><table class="infobox"><caption class="infobox-title">GNU Lesser General Public License</caption><tbody><tr><td colspan="2" class="infobox-image"><span class="mw-default-size" typeof="mw:File/Frameless"><a href="/wiki/File:LGPLv3_Logo.svg" class="mw-file-description"><img alt="Logo" src="//upload.wikimedia.org/wikipedia/commons/thumb/3/3b/LGPLv3_Logo.svg/220px-LGPLv3_Logo.svg.png" decoding="async" width="220" height="96" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/3/3b/LGPLv3_Logo.svg/330px-LGPLv3_Logo.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/3/3b/LGPLv3_Logo.svg/440px-LGPLv3_Logo.svg.png 2x" data-file-width="823" data-file-height="358" /></a></span><div class="infobox-caption">Logo</div></td></tr><tr><th scope="row" class="infobox-label" style="width:45%;">Published</th><td class="infobox-data" style="width:55%;">1991<span class="noprint">; 34 years ago</span><span style="display:none"> (<span class="bday dtstart published updated">1991</span>)</span></td></tr><tr><th scope="row" class="infobox-label" style="width:45%;"><a href="/wiki/Software_Package_Data_Exchange" title="Software Package Data Exchange">SPDX</a> identifier</th><td class="infobox-data" style="width:55%;">LGPL-3.0-or-later<br />LGPL-3.0-only<br />LGPL-2.1-or-later<br />LGPL-2.1-only<br />LGPL-2.0-or-later<br />LGPL-2.0-only</td></tr><tr><th scope="row" class="infobox-label" style="width:45%;"><a href="/wiki/Debian_Free_Software_Guidelines" class="mw-redirect" title="Debian Free Software Guidelines">Debian FSG compatible</a></th><td class="infobox-data" style="width:55%;">Yes<sup id="cite_ref-1" class="reference"><a href="#cite_note-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup></td></tr><tr><th scope="row" class="infobox-label" style="width:45%;"><a href="/wiki/Free_Software_Foundation" title="Free Software Foundation">FSF</a> <a href="/wiki/Comparison_of_free_and_open-source_software_licences#Approvals" class="mw-redirect" title="Comparison of free and open-source software licences">approved</a></th><td class="infobox-data" style="width:55%;">Yes<sup id="cite_ref-fsf_2-0" class="reference"><a href="#cite_note-fsf-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup></td></tr><tr><th scope="row" class="infobox-label" style="width:45%;"><a href="/wiki/Open_Source_Initiative" title="Open Source Initiative">OSI</a> <a href="/wiki/Comparison_of_free_and_open-source_software_licences#Approvals" class="mw-redirect" title="Comparison of free and open-source software licences">approved</a></th><td class="infobox-data" style="width:55%;">Yes<sup id="cite_ref-3" class="reference"><a href="#cite_note-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup></td></tr><tr><th scope="row" class="infobox-label" style="width:45%;"><a href="/wiki/GPL_compatible" class="mw-redirect" title="GPL compatible">GPL compatible</a></th><td class="infobox-data" style="width:55%;">Yes<sup id="cite_ref-fsf_2-1" class="reference"><a href="#cite_note-fsf-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup></td></tr><tr><th scope="row" class="infobox-label" style="width:45%;"><a href="/wiki/Copyleft" title="Copyleft">Copyleft</a></th><td class="infobox-data" style="width:55%;">Yes<sup id="cite_ref-fsf_2-2" class="reference"><a href="#cite_note-fsf-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup> (<a href="#FSF_recommendations_on_library_licensing">library or dynamic linking-based</a>)</td></tr><tr><th scope="row" class="infobox-label" style="width:45%;"><a href="/wiki/GPL_linking_exception" title="GPL linking exception">Linking from code with a different licence</a></th><td class="infobox-data" style="width:55%;">Yes</td></tr><tr><th scope="row" class="infobox-label" style="width:45%;">Website</th><td class="infobox-data" style="width:55%;"><span class="url"><a rel="nofollow" class="external text" href="https://www.gnu.org/licenses/lgpl.html">www<wbr />.gnu<wbr />.org<wbr />/licenses<wbr />/lgpl<wbr />.html</a></span> <span class="penicon autoconfirmed-show"><span class="mw-valign-text-top" typeof="mw:File/Frameless"><a href="https://www.wikidata.org/wiki/Q192897?uselang=en#P856" title="Edit this on Wikidata"><img alt="Edit this on Wikidata" src="//upload.wikimedia.org/wikipedia/en/thumb/8/8a/OOjs_UI_icon_edit-ltr-progressive.svg/10px-OOjs_UI_icon_edit-ltr-progressive.svg.png" decoding="async" width="10" height="10" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/en/thumb/8/8a/OOjs_UI_icon_edit-ltr-progressive.svg/15px-OOjs_UI_icon_edit-ltr-progressive.svg.png 1.5x, //upload.wikimedia.org/wikipedia/en/thumb/8/8a/OOjs_UI_icon_edit-ltr-progressive.svg/20px-OOjs_UI_icon_edit-ltr-progressive.svg.png 2x" data-file-width="20" data-file-height="20" /></a></span></span></td></tr></tbody></table> <p>The <b>GNU Lesser General Public License</b> (<b>LGPL</b>) is a <a href="/wiki/Free-software_license" title="Free-software license">free-software license</a> published by the <a href="/wiki/Free_Software_Foundation" title="Free Software Foundation">Free Software Foundation</a> (FSF). The license allows developers and companies to use and integrate a software component released under the LGPL into their own (even <a href="/wiki/Proprietary_software" title="Proprietary software">proprietary</a>) software without being required by the terms of a strong <a href="/wiki/Copyleft" title="Copyleft">copyleft</a> license to release the source code of their own components. However, any developer who modifies an LGPL-covered component is required to make their modified version available under the same LGPL license. For proprietary software, code under the LGPL is usually used in the form of a <a href="/wiki/Shared_library" title="Shared library">shared library</a>, so that there is a clear separation between the proprietary and LGPL components. The LGPL is primarily used for <a href="/wiki/Library_(computing)" title="Library (computing)">software libraries</a>, although it is also used by some stand-alone applications. </p><p>The LGPL was developed as a compromise between the strong <a href="/wiki/Copyleft" title="Copyleft">copyleft</a> of the <a href="/wiki/GNU_General_Public_License" title="GNU General Public License">GNU General Public License</a> (GPL) and more <a href="/wiki/Permissive_free_software_licence" class="mw-redirect" title="Permissive free software licence">permissive</a> licenses such as the <a href="/wiki/BSD_license" class="mw-redirect" title="BSD license">BSD licenses</a> and the <a href="/wiki/MIT_License" title="MIT License">MIT License</a>. The word "Lesser" in the title shows that the LGPL does not guarantee the end user's complete freedom in the use of software; it only guarantees the freedom of modification for components licensed under the LGPL, but not for any proprietary components. </p> <meta property="mw:PageProp/toc" /> <div class="mw-heading mw-heading2"><h2 id="History">History</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=GNU_Lesser_General_Public_License&action=edit&section=1" title="Edit section: History"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>The license was originally called the <b>GNU Library General Public License</b> and was first published in 1991, and adopted the version number 2 for parity with GPL version 2. The LGPL was revised in minor ways in the 2.1 point release, published in 1999, when it was renamed the GNU Lesser General Public License to reflect the FSF's position that not all libraries should use it. Version 3 of the LGPL was published in 2007 as a list of additional permissions applied to GPL version 3. </p><p>In addition to the term "work based on the Program" of GPL, LGPL version 2 introduced two additional clarification terms "work based on the library" and "work that uses the library".<sup id="cite_ref-4" class="reference"><a href="#cite_note-4"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup> LGPL version 3 partially dropped these terms. </p> <div class="mw-heading mw-heading2"><h2 id="Differences_from_the_GPL">Differences from the GPL</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=GNU_Lesser_General_Public_License&action=edit&section=2" title="Edit section: Differences from the GPL"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>The main difference between the GPL and the LGPL is that the latter allows the work to be linked with (in the case of a library, "used by") a non-(L)GPLed program, regardless of whether it is licensed under a license of GPL family or other licenses.<sup id="cite_ref-not_use_LGPL_5-0" class="reference"><a href="#cite_note-not_use_LGPL-5"><span class="cite-bracket">[</span>5<span class="cite-bracket">]</span></a></sup> In LGPL 2.1, the non-(L)GPLed program can then be distributed under any terms if it is not a <a href="/wiki/Derivative_work" title="Derivative work">derivative work</a>. If it is a derivative work, then the program's terms must allow for "modification of the work for the customer's own use and <a href="/wiki/Reverse_engineering" title="Reverse engineering">reverse engineering</a> for debugging such modifications". Whether a work that uses an LGPL program is a derivative work or not is a legal issue. A standalone executable that <a href="/wiki/Library_(computing)#Dynamic_linking" title="Library (computing)">dynamically links</a> to a library through a <a href="/wiki/Library_(computing)#Shared_libraries" title="Library (computing)">.so</a>, <a href="/wiki/Dynamic-link_library" title="Dynamic-link library">.dll</a>, or similar medium is generally accepted as not being a derivative work as defined by the LGPL. It would fall under the definition of a "work that uses the Library". Paragraph 5 of the LGPL version 2.1 states: </p> <dl><dd>A program that contains no derivative of any portion of the Library, but is designed to work with the Library by being compiled or linked with it, is called a "work that uses the Library". Such a work, in isolation, is not a derivative work of the Library, and therefore falls outside the scope of this License.</dd></dl> <p>Essentially, if it is a "work that uses the library", then it must be possible for the software to be linked with a newer version of the LGPL-covered program. The most commonly used method for doing so is to use "a suitable <a href="/wiki/Library_(computing)#Shared_libraries" title="Library (computing)">shared library</a> mechanism for linking". Alternatively, a <a href="/wiki/Statically_linked_library" class="mw-redirect" title="Statically linked library">statically linked library</a> is allowed if either source code or linkable object files are provided.<sup id="cite_ref-LGPL_Section_4_6-0" class="reference"><a href="#cite_note-LGPL_Section_4-6"><span class="cite-bracket">[</span>6<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading2"><h2 id="Compatibility">Compatibility</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=GNU_Lesser_General_Public_License&action=edit&section=3" title="Edit section: Compatibility"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>One feature of the LGPL is the permission to sublicense<sup id="cite_ref-7" class="reference"><a href="#cite_note-7"><span class="cite-bracket">[</span>7<span class="cite-bracket">]</span></a></sup> under the GPL any piece of software which is received under the LGPL (see section 3 of the LGPL version 2.1, and section 2 option b of the LGPL version 3). This feature allows for direct reuse of LGPLed code in GPLed libraries and applications. </p><p>Version 3 of the LGPL is not inherently compatible with version 2 of the GPL. However, works using the latter that have given permission to use a later version of the GPL are compatible:<sup id="cite_ref-LGPL_FSF_8-0" class="reference"><a href="#cite_note-LGPL_FSF-8"><span class="cite-bracket">[</span>8<span class="cite-bracket">]</span></a></sup> a work released under the GPLv2 "or any later version" may be combined with code from a LGPL version 3 library, with the combined work as a whole falling under the terms of the GPLv3.<sup id="cite_ref-LGPL_FSF_MATRIX_9-0" class="reference"><a href="#cite_note-LGPL_FSF_MATRIX-9"><span class="cite-bracket">[</span>9<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading2"><h2 id="FSF_recommendations_on_library_licensing">FSF recommendations on library licensing</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=GNU_Lesser_General_Public_License&action=edit&section=4" title="Edit section: FSF recommendations on library licensing"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>The former name <i>GNU Library General Public License</i> gave some the impression that the FSF recommended that all software libraries should use the LGPL and programs should use the GPL. In 1999 essay <i>Why you shouldn't use the Lesser GPL for your next library</i> <a href="/wiki/Richard_Stallman" title="Richard Stallman">Richard Stallman</a> explained that while the LGPL had not been <a href="/wiki/Deprecation" title="Deprecation">deprecated</a>, one should not necessarily use the LGPL for all libraries, as using GPL can give advantage to free-software developers.<sup id="cite_ref-not_use_LGPL_5-1" class="reference"><a href="#cite_note-not_use_LGPL-5"><span class="cite-bracket">[</span>5<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading2"><h2 id="Programming_language_specifications">Programming language specifications</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=GNU_Lesser_General_Public_License&action=edit&section=5" title="Edit section: Programming language specifications"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>The license uses terminology which is mainly intended for applications written in the <a href="/wiki/C_(programming_language)" title="C (programming language)">C programming language</a> or its family. Franz Inc., the developers of <a href="/wiki/Allegro_Common_Lisp" title="Allegro Common Lisp">Allegro Common Lisp</a>, published their own preamble to the license to clarify terminology in the <a href="/wiki/Lisp_(programming_language)" title="Lisp (programming language)">Lisp</a> context. The LGPL with this preamble is sometimes referred to as the LLGPL.<sup id="cite_ref-LGPL_preamble_10-0" class="reference"><a href="#cite_note-LGPL_preamble-10"><span class="cite-bracket">[</span>10<span class="cite-bracket">]</span></a></sup> </p><p>In addition, <a href="/wiki/Ada_(programming_language)" title="Ada (programming language)">Ada</a> has a special feature, <a href="https://en.wikibooks.org/wiki/Ada_Programming/Generics" class="extiw" title="wikibooks:Ada Programming/Generics">generics</a>, which may prompt the use of the <a href="/wiki/GNAT_Modified_General_Public_License" title="GNAT Modified General Public License">GNAT Modified General Public License</a> (GMGPL): it allows code to link against or instantiate GMGPL-covered units without the code itself becoming covered by the GPL. </p><p><a href="/wiki/C%2B%2B" title="C++">C++</a> templates and <a href="/wiki/Header-only" title="Header-only">header-only libraries</a> have the same problem as Ada generics. Version 3 of the LGPL addresses such cases in section 3.<sup id="cite_ref-11" class="reference"><a href="#cite_note-11"><span class="cite-bracket">[</span>11<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading3"><h3 id="Class_inheritance">Class inheritance</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=GNU_Lesser_General_Public_License&action=edit&section=6" title="Edit section: Class inheritance"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Some concern has risen about the suitability of object-oriented classes in LGPL-licensed code being <a href="/wiki/Inheritance_(object-oriented_programming)" title="Inheritance (object-oriented programming)">inherited</a> by non-(L)GPL code. Clarification is given on the official GNU website: </p> <dl><dd>The LGPL does not contain special provisions for inheritance, because none are needed. Inheritance creates derivative works in the same way as traditional linking, and the LGPL permits this type of derivative work in the same way as it permits ordinary function calls.<sup id="cite_ref-12" class="reference"><a href="#cite_note-12"><span class="cite-bracket">[</span>12<span class="cite-bracket">]</span></a></sup></dd></dl> <div class="mw-heading mw-heading2"><h2 id="See_also">See also</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=GNU_Lesser_General_Public_License&action=edit&section=7" title="Edit section: See also"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <style data-mw-deduplicate="TemplateStyles:r1266661725">.mw-parser-output .portalbox{padding:0;margin:0.5em 0;display:table;box-sizing:border-box;max-width:175px;list-style:none}.mw-parser-output .portalborder{border:1px solid 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.references{font-size:100%;margin-bottom:0;list-style-type:inherit}.mw-parser-output .reflist-columns-2{column-width:30em}.mw-parser-output .reflist-columns-3{column-width:25em}.mw-parser-output .reflist-columns{margin-top:0.3em}.mw-parser-output .reflist-columns ol{margin-top:0}.mw-parser-output .reflist-columns li{page-break-inside:avoid;break-inside:avoid-column}.mw-parser-output .reflist-upper-alpha{list-style-type:upper-alpha}.mw-parser-output .reflist-upper-roman{list-style-type:upper-roman}.mw-parser-output .reflist-lower-alpha{list-style-type:lower-alpha}.mw-parser-output .reflist-lower-greek{list-style-type:lower-greek}.mw-parser-output .reflist-lower-roman{list-style-type:lower-roman}</style><div class="reflist reflist-columns references-column-width" style="column-width: 30em;"> <ol class="references"> <li id="cite_note-1"><span class="mw-cite-backlink"><b><a href="#cite_ref-1">^</a></b></span> <span class="reference-text"><a rel="nofollow" class="external text" href="https://www.debian.org/legal/licenses/">License information</a> Debian</span> </li> <li id="cite_note-fsf-2"><span class="mw-cite-backlink">^ <a href="#cite_ref-fsf_2-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-fsf_2-1"><sup><i><b>b</b></i></sup></a> <a href="#cite_ref-fsf_2-2"><sup><i><b>c</b></i></sup></a></span> <span class="reference-text"><style data-mw-deduplicate="TemplateStyles:r1238218222">.mw-parser-output cite.citation{font-style:inherit;word-wrap:break-word}.mw-parser-output .citation q{quotes:"\"""\"""'""'"}.mw-parser-output .citation:target{background-color:rgba(0,127,255,0.133)}.mw-parser-output .id-lock-free.id-lock-free a{background:url("//upload.wikimedia.org/wikipedia/commons/6/65/Lock-green.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-limited.id-lock-limited a,.mw-parser-output .id-lock-registration.id-lock-registration a{background:url("//upload.wikimedia.org/wikipedia/commons/d/d6/Lock-gray-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-subscription.id-lock-subscription a{background:url("//upload.wikimedia.org/wikipedia/commons/a/aa/Lock-red-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .cs1-ws-icon a{background:url("//upload.wikimedia.org/wikipedia/commons/4/4c/Wikisource-logo.svg")right 0.1em center/12px no-repeat}body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-free a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-limited a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-registration a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-subscription a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .cs1-ws-icon a{background-size:contain;padding:0 1em 0 0}.mw-parser-output .cs1-code{color:inherit;background:inherit;border:none;padding:inherit}.mw-parser-output .cs1-hidden-error{display:none;color:var(--color-error,#d33)}.mw-parser-output .cs1-visible-error{color:var(--color-error,#d33)}.mw-parser-output .cs1-maint{display:none;color:#085;margin-left:0.3em}.mw-parser-output .cs1-kern-left{padding-left:0.2em}.mw-parser-output .cs1-kern-right{padding-right:0.2em}.mw-parser-output .citation .mw-selflink{font-weight:inherit}@media screen{.mw-parser-output .cs1-format{font-size:95%}html.skin-theme-clientpref-night .mw-parser-output .cs1-maint{color:#18911f}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .cs1-maint{color:#18911f}}</style><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://www.gnu.org/licenses/license-list.en.html#LGPL">"Various Licenses and Comments about Them"</a>. <i>Free Software Foundation</i>. 26 June 2018<span class="reference-accessdate">. Retrieved <span class="nowrap">2 August</span> 2018</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=Free+Software+Foundation&rft.atitle=Various+Licenses+and+Comments+about+Them&rft.date=2018-06-26&rft_id=https%3A%2F%2Fwww.gnu.org%2Flicenses%2Flicense-list.en.html%23LGPL&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGNU+Lesser+General+Public+License" class="Z3988"></span></span> </li> <li id="cite_note-3"><span class="mw-cite-backlink"><b><a href="#cite_ref-3">^</a></b></span> <span class="reference-text"><a rel="nofollow" class="external text" href="https://opensource.org/licenses">Licenses & Standards</a> Open Source Initiative</span> </li> <li id="cite_note-4"><span class="mw-cite-backlink"><b><a href="#cite_ref-4">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222" /><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://copyleft.org/guide/comprehensive-gpl-guidech11.html">"Chapter 10. The Lesser GPL"</a>. <i>Copyleft and the GNU General Public License: A Comprehensive Tutorial and Guide</i>. 2018.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=Copyleft+and+the+GNU+General+Public+License%3A+A+Comprehensive+Tutorial+and+Guide&rft.atitle=Chapter+10.+The+Lesser+GPL&rft.date=2018&rft_id=https%3A%2F%2Fcopyleft.org%2Fguide%2Fcomprehensive-gpl-guidech11.html&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGNU+Lesser+General+Public+License" class="Z3988"></span></span> </li> <li id="cite_note-not_use_LGPL-5"><span class="mw-cite-backlink">^ <a href="#cite_ref-not_use_LGPL_5-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-not_use_LGPL_5-1"><sup><i><b>b</b></i></sup></a></span> <span class="reference-text">Stallman, Richard. "<a rel="nofollow" class="external text" href="http://www.fsf.org/licensing/licenses/why-not-lgpl.html">Why you shouldn't use the Lesser GPL for your next library</a>". <a href="/wiki/Free_Software_Foundation" title="Free Software Foundation">Free Software Foundation</a> official website.</span> </li> <li id="cite_note-LGPL_Section_4-6"><span class="mw-cite-backlink"><b><a href="#cite_ref-LGPL_Section_4_6-0">^</a></b></span> <span class="reference-text"><a rel="nofollow" class="external text" href="https://www.gnu.org/copyleft/lesser.html#section4">Gnu Lesser General Public License, Section 4</a>, pt. d) 0)</span> </li> <li id="cite_note-7"><span class="mw-cite-backlink"><b><a href="#cite_ref-7">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222" /><cite class="citation web cs1"><a class="external text" href="https://en.wiktionary.org/wiki/sublicense">"sublicense"</a>. <i>Wiktionary</i>. 7 December 2020.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=Wiktionary&rft.atitle=sublicense&rft.date=2020-12-07&rft_id=https%3A%2F%2Fen.wiktionary.org%2Fwiki%2Fsublicense&rfr_id=info%3Asid%2Fen.wikipedia.org%3AGNU+Lesser+General+Public+License" class="Z3988"></span></span> </li> <li id="cite_note-LGPL_FSF-8"><span class="mw-cite-backlink"><b><a href="#cite_ref-LGPL_FSF_8-0">^</a></b></span> <span class="reference-text"><a rel="nofollow" class="external text" href="https://www.gnu.org/licenses/license-list.html#LGPL">GNU Lesser General Public License (LGPL) version 3</a>. <a href="/wiki/Free_Software_Foundation" title="Free Software Foundation">Free Software Foundation</a> official website.</span> </li> <li id="cite_note-LGPL_FSF_MATRIX-9"><span class="mw-cite-backlink"><b><a href="#cite_ref-LGPL_FSF_MATRIX_9-0">^</a></b></span> <span class="reference-text"><a rel="nofollow" class="external text" href="https://www.gnu.org/licenses/gpl-faq.html#gpl-compat-matrix">Frequently Asked Questions about the GNU Licenses - GNU Project - Free Software Foundation</a>. <a href="/wiki/Free_Software_Foundation" title="Free Software Foundation">Free Software Foundation</a> official website.</span> </li> <li id="cite_note-LGPL_preamble-10"><span class="mw-cite-backlink"><b><a href="#cite_ref-LGPL_preamble_10-0">^</a></b></span> <span class="reference-text"><a rel="nofollow" class="external text" href="http://opensource.franz.com/preamble.html">Preamble to the Gnu Lesser General Public License</a></span> </li> <li id="cite_note-11"><span class="mw-cite-backlink"><b><a href="#cite_ref-11">^</a></b></span> <span class="reference-text"><a rel="nofollow" class="external text" href="https://listengine.tuxfamily.org/lists.tuxfamily.org/eigen/2008/02/msg00003.html">LGPLv3 for a C++ Pure Template Library ?</a></span> </li> <li id="cite_note-12"><span class="mw-cite-backlink"><b><a href="#cite_ref-12">^</a></b></span> <span class="reference-text">Turner, David. <a rel="nofollow" class="external text" href="https://www.gnu.org/licenses/lgpl-java.html">The LGPL and Java</a>. <a href="/wiki/GNU" title="GNU">GNU</a> official website.</span> </li> </ol></div> <div class="mw-heading mw-heading2"><h2 id="External_links">External links</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=GNU_Lesser_General_Public_License&action=edit&section=9" title="Edit section: External links"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><span class="official-website"><span class="url"><a rel="nofollow" class="external text" href="https://www.gnu.org/licenses/lgpl.html">Official website</a></span></span> <span class="mw-valign-text-top" typeof="mw:File/Frameless"><a href="https://www.wikidata.org/wiki/Q192897#P856" title="Edit this at Wikidata"><img alt="Edit this at Wikidata" 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<li><a href="/wiki/GNU_Find_Utilities" class="mw-redirect" title="GNU Find Utilities">findutils</a></li> <li><a href="/wiki/GNU_Autotools" title="GNU Autotools">Build system</a></li> <li><a href="/wiki/GNU_Compiler_Collection" title="GNU Compiler Collection">GCC</a></li> <li><a href="/wiki/GNU_Binutils" title="GNU Binutils">binutils</a></li> <li><a href="/wiki/GNU_Debugger" title="GNU Debugger">GDB</a></li> <li><a href="/wiki/GNU_GRUB" title="GNU GRUB">GRUB</a></li> <li><a href="/wiki/GNUstep" title="GNUstep">GNUstep</a></li> <li><a href="/wiki/GIMP" title="GIMP">GIMP</a></li> <li><a href="/wiki/Jami_(software)" title="Jami (software)">Jami</a></li> <li><a href="/wiki/GNU_Emacs" title="GNU Emacs">GNU Emacs</a></li> <li><a href="/wiki/GNU_TeXmacs" title="GNU TeXmacs">GNU TeXmacs</a></li> <li><a href="/wiki/GNU_Octave" title="GNU Octave">GNU Octave</a></li> <li><a href="/wiki/GNU_Taler" title="GNU Taler">GNU Taler</a></li> <li><a href="/wiki/R_(programming_language)" title="R (programming language)">GNU R</a></li> <li><a href="/wiki/GNU_Scientific_Library" title="GNU Scientific Library">GSL</a></li> <li><a href="/wiki/GNU_Multiple_Precision_Arithmetic_Library" title="GNU Multiple Precision Arithmetic Library">GMP</a></li> <li><a href="/wiki/Electric_(software)" title="Electric (software)">GNU Electric</a></li> <li><a href="/wiki/GNU_Archimedes" title="GNU Archimedes">GNU Archimedes</a></li> <li><a href="/wiki/GNUnet" title="GNUnet">GNUnet</a></li> <li><a href="/wiki/GNU_Privacy_Guard" title="GNU Privacy Guard">GNU Privacy Guard</a></li> <li><a href="/wiki/Gnuzilla" class="mw-redirect" title="Gnuzilla">Gnuzilla</a> (<a href="/wiki/GNU_IceCat" title="GNU IceCat">IceCat</a>)</li> <li><a href="/wiki/GNU_Health" title="GNU Health">GNU Health</a></li> <li><a href="/wiki/GNUmed" title="GNUmed">GNUmed</a></li> <li><a href="/wiki/LilyPond" title="LilyPond">GNU LilyPond</a></li> <li><a href="/wiki/GNU_Go" title="GNU Go">GNU Go</a></li> <li><a href="/wiki/GNU_Chess" title="GNU Chess">GNU Chess</a></li> <li><a href="/wiki/Gnash_(software)" title="Gnash (software)">Gnash</a></li> <li><a href="/wiki/GNU_Guix" title="GNU Guix">Guix</a></li> <li><a href="/wiki/List_of_GNU_packages" title="List of GNU packages"><i>more...</i></a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Contributors</th><td class="navbox-list-with-group navbox-list navbox-even hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Benjamin_Mako_Hill" title="Benjamin Mako Hill">Benjamin Mako Hill</a></li> <li><a href="/wiki/Bradley_M._Kuhn" title="Bradley M. Kuhn">Bradley M. Kuhn</a></li> <li><a href="/wiki/Brian_Fox_(programmer)" title="Brian Fox (programmer)">Brian Fox</a></li> <li><a href="/wiki/Federico_Heinz" class="mw-redirect" title="Federico Heinz">Federico Heinz</a></li> <li><a href="/wiki/William_John_Sullivan" title="William John Sullivan">John Sullivan</a></li> <li>Nagarjuna G.</li> <li><a href="/wiki/Richard_Stallman" title="Richard Stallman">Richard M. Stallman</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Other topics</th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/GNU/Linux_naming_controversy" title="GNU/Linux naming controversy">GNU/Linux naming controversy</a></li> <li><i><a href="/wiki/Revolution_OS" title="Revolution OS">Revolution OS</a></i></li> <li><a href="/wiki/Free_Software_Foundation_anti-Windows_campaigns" title="Free Software Foundation anti-Windows campaigns">Free Software Foundation anti-Windows campaigns</a></li> <li><a href="/wiki/Defective_by_Design" title="Defective by Design">Defective by Design</a></li></ul> </div></td></tr></tbody></table></div> <div class="navbox-styles"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1129693374" /><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236075235" /></div><div role="navigation" class="navbox" aria-labelledby="Free_Software_Foundation91" style="padding:3px"><table class="nowraplinks mw-collapsible autocollapse navbox-inner" style="border-spacing:0;background:transparent;color:inherit"><tbody><tr><th scope="col" class="navbox-title" colspan="2"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1129693374" /><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1239400231" /><div class="navbar plainlinks hlist navbar-mini"><ul><li class="nv-view"><a href="/wiki/Template:Free_Software_Foundation" title="Template:Free Software Foundation"><abbr title="View this template">v</abbr></a></li><li class="nv-talk"><a href="/wiki/Template_talk:Free_Software_Foundation" title="Template talk:Free Software Foundation"><abbr title="Discuss this template">t</abbr></a></li><li class="nv-edit"><a href="/wiki/Special:EditPage/Template:Free_Software_Foundation" title="Special:EditPage/Template:Free Software Foundation"><abbr title="Edit this template">e</abbr></a></li></ul></div><div id="Free_Software_Foundation91" style="font-size:114%;margin:0 4em"><a href="/wiki/Free_Software_Foundation" title="Free Software Foundation">Free Software Foundation</a></div></th></tr><tr><th scope="row" class="navbox-group" style="width:1%">People</th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Geoffrey_Knauth" title="Geoffrey Knauth">Geoffrey Knauth</a></li> <li><a href="/wiki/Henry_Poole_(technologist)" title="Henry Poole (technologist)">Henry Poole</a></li> <li><a href="/wiki/Richard_Stallman" title="Richard Stallman">Richard M. Stallman</a></li> <li><a href="/wiki/Gerald_Jay_Sussman" title="Gerald Jay Sussman">Gerald Jay Sussman</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/GNU_Project" title="GNU Project">GNU Project</a></th><td class="navbox-list-with-group navbox-list navbox-even hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/GNU_General_Public_License" title="GNU General Public License">GNU General Public License</a></li> <li><a class="mw-selflink selflink">GNU Lesser General Public License</a></li> <li><a href="/wiki/GNU_Affero_General_Public_License" title="GNU Affero General Public License">GNU Affero General Public License</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Other projects</th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Free_Software_Directory" title="Free Software Directory">Free Software Directory</a></li> <li><a href="/wiki/FSF_Free_Software_Awards" title="FSF Free Software Awards">FSF Free Software Awards</a></li> <li><a href="/wiki/Free_Software_Foundation_anti-Windows_campaigns" title="Free Software Foundation anti-Windows campaigns">Free Software Foundation anti-Windows campaigns</a></li> <li><a href="/wiki/Defective_by_Design" title="Defective by Design">Defective by Design</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Sister organizations</th><td class="navbox-list-with-group navbox-list navbox-even hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Free_Software_Foundation_Europe" title="Free Software Foundation Europe">FSF Europe</a></li> <li><a href="/wiki/Free_Software_Foundation_Latin_America" title="Free Software Foundation Latin America">FSF Latin America</a></li> <li><a href="/wiki/Free_Software_Foundation_of_India" title="Free Software Foundation of India">FSF India</a></li> <li><a href="/wiki/League_for_Programming_Freedom" title="League for Programming Freedom">League for Programming Freedom</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">See also</th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Comparison_of_Linux_distributions" title="Comparison of Linux distributions">Comparison of Linux distributions</a></li></ul> </div></td></tr></tbody></table></div> <div class="navbox-styles"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1129693374" /><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236075235" /></div><div role="navigation" class="navbox" aria-labelledby="Free_and_open-source_software510" style="padding:3px"><table class="nowraplinks hlist mw-collapsible autocollapse navbox-inner" style="border-spacing:0;background:transparent;color:inherit"><tbody><tr><th scope="col" class="navbox-title" colspan="2"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1129693374" /><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1239400231" /><div class="navbar plainlinks hlist navbar-mini"><ul><li class="nv-view"><a href="/wiki/Template:FOSS" title="Template:FOSS"><abbr title="View this template">v</abbr></a></li><li class="nv-talk"><a href="/wiki/Template_talk:FOSS" title="Template talk:FOSS"><abbr title="Discuss this template">t</abbr></a></li><li class="nv-edit"><a href="/wiki/Special:EditPage/Template:FOSS" title="Special:EditPage/Template:FOSS"><abbr title="Edit this template">e</abbr></a></li></ul></div><div id="Free_and_open-source_software510" style="font-size:114%;margin:0 4em"><a href="/wiki/Free_and_open-source_software" title="Free and open-source software">Free and open-source software</a></div></th></tr><tr><th scope="row" class="navbox-group" style="width:1%">General</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Alternative_terms_for_free_software" title="Alternative terms for free software">Alternative terms for free software</a></li> <li><a href="/wiki/Comparison_of_open-source_and_closed-source_software" title="Comparison of open-source and closed-source software">Comparison of open-source and closed-source software</a></li> <li><a href="/wiki/Comparison_of_source-code-hosting_facilities" title="Comparison of source-code-hosting facilities">Comparison of source-code-hosting facilities</a></li> <li><a href="/wiki/Free_software" title="Free software">Free software</a></li> <li><a href="/wiki/List_of_free_software_project_directories" title="List of free software project directories">Free software project directories</a></li> <li><a href="/wiki/Gratis_versus_libre" title="Gratis versus libre">Gratis versus libre</a></li> <li><a href="/wiki/Long-term_support" title="Long-term support">Long-term support</a></li> <li><a href="/wiki/Open-source_software" title="Open-source software">Open-source software</a></li> <li><a href="/wiki/Open-source_software_development" title="Open-source software development">Open-source software development</a></li> <li><a href="/wiki/Outline_of_free_software" title="Outline of free software">Outline</a></li> <li><a href="/wiki/Timeline_of_free_and_open-source_software" title="Timeline of free and open-source software">Timeline</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/List_of_free_and_open-source_software_packages" title="List of free and open-source software packages">Software<br />packages</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Comparison_of_free_software_for_audio" title="Comparison of free software for audio">Audio</a></li> <li><a href="/wiki/List_of_open-source_bioinformatics_software" title="List of open-source bioinformatics software">Bioinformatics</a></li> <li><a href="/wiki/List_of_open-source_codecs" title="List of open-source codecs">Codecs</a></li> <li><a href="/wiki/Comparison_of_open-source_configuration_management_software" title="Comparison of open-source configuration management software">Configuration management</a></li> <li><a href="/wiki/Device_driver" title="Device driver">Drivers</a> <ul><li><a href="/wiki/Free_and_open-source_graphics_device_driver" title="Free and open-source graphics device driver">Graphics</a></li> <li><a href="/wiki/Comparison_of_open-source_wireless_drivers" title="Comparison of open-source wireless drivers">Wireless</a></li></ul></li> <li><a href="/wiki/List_of_open-source_health_software" title="List of open-source health software">Health</a></li> <li><a href="/wiki/List_of_open-source_software_for_mathematics" title="List of open-source software for mathematics">Mathematics</a></li> <li><a href="/wiki/List_of_office_suites" title="List of office suites">Office suites</a></li> <li><a href="/wiki/Comparison_of_open-source_operating_systems" title="Comparison of open-source operating systems">Operating systems</a></li> <li><a href="/wiki/List_of_open-source_routing_platforms" title="List of open-source routing platforms">Routing</a></li> <li><a href="/wiki/List_of_free_television_software" title="List of free television software">Television</a></li> <li><a href="/wiki/List_of_open-source_video_games" title="List of open-source video games">Video games</a></li> <li><a href="/wiki/List_of_free_and_open-source_web_applications" title="List of free and open-source web applications">Web applications</a> <ul><li><a href="/wiki/Comparison_of_shopping_cart_software" title="Comparison of shopping cart software">E-commerce</a></li></ul></li> <li><a href="/wiki/List_of_free_and_open-source_Android_applications" title="List of free and open-source Android applications">Android apps</a></li> <li><a href="/wiki/List_of_free_and_open-source_iOS_applications" title="List of free and open-source iOS applications">iOS apps</a></li> <li><a href="/wiki/List_of_commercial_open-source_applications_and_services" title="List of commercial open-source applications and services">Commercial</a></li> <li><a href="/wiki/List_of_formerly_proprietary_software" title="List of formerly proprietary software">Formerly proprietary</a></li> <li><a href="/wiki/List_of_formerly_free_and_open-source_software" class="mw-redirect" title="List of formerly free and open-source software">Formerly open-source</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Community_of_practice" title="Community of practice">Community</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Free_software_movement" title="Free software movement">Free software movement</a></li> <li><a href="/wiki/History_of_free_and_open-source_software" title="History of free and open-source software">History</a></li> <li><a href="/wiki/Open-source-software_movement" class="mw-redirect" title="Open-source-software movement">Open-source-software movement</a></li> <li><a href="/wiki/List_of_free-software_events" title="List of free-software events">Events</a></li> <li><a href="/wiki/Open-source_software_advocacy" title="Open-source software advocacy">Advocacy</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/List_of_free_and_open-source_software_organizations" title="List of free and open-source software organizations">Organisations</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Free_Software_Movement_of_India" title="Free 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