{"id":108082,"date":"2023-04-26T00:48:27","date_gmt":"2023-04-25T22:48:27","guid":{"rendered":"https:\/\/prohoster.info\/?p=108082"},"modified":"2023-04-26T09:25:39","modified_gmt":"2023-04-26T07:25:39","slug":"vypusk-sborochnogo-instrumentariya-qbs-2-0","status":"publish","type":"post","link":"https:\/\/prohoster.info\/sv\/blog\/news\/vypusk-sborochnogo-instrumentariya-qbs-2-0","title":{"rendered":"Utgivning av byggverktyget Qbs 2.0","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Version 2.0 av byggverktyget Qbs har sl\u00e4ppts. F\u00f6r att bygga Qbs kr\u00e4vs Qt som en av beroendena, \u00e4ven om Qbs \u00e4r avsett f\u00f6r att organisera byggandet av alla typer av projekt. Qbs anv\u00e4nder en f\u00f6renklad version av QML-spr\u00e5ket f\u00f6r att definiera byggprocesserna, vilket m\u00f6jligg\u00f6r skapandet av ganska flexibla byggregler d\u00e4r externa moduler kan kopplas in, JavaScript-funktioner kan anv\u00e4ndas, och anpassade byggregler kan skapas.    <\/p>\n<p>Spr\u00e5ket som anv\u00e4nds i Qbs-script \u00e4r anpassat f\u00f6r att automatisera genereringen och tolkningen av byggscripts i integrerade utvecklingsmilj\u00f6er. Dessutom genererar Qbs inga make-filer, utan kontrollerar direkt, utan mellanh\u00e4nder som make-verktyget, k\u00f6rningen av kompilatorer och l\u00e4nkare, och optimerar byggprocessen baserat p\u00e5 en detaljerad graf av alla beroenden. N\u00e4rvaron av ursprunglig data om strukturen och beroendena i projektet m\u00f6jligg\u00f6r effektiv parallellbearbetning av operationer i flera tr\u00e5dar. F\u00f6r stora projekt best\u00e5ende av ett stort antal filer och underkataloger kan prestandan vid omkompilering med Qbs \u00f6vertr\u00e4ffa make med flera g\u00e5nger \u2014 omkompileringen utf\u00f6rs n\u00e4stan omedelbart och tvingar inte utvecklaren att v\u00e4nta.       <\/p>\n<p>Vi p\u00e5minner om att Qt Company beslutade att avsluta utvecklingen av Qbs \u00e5r 2018. Qbs utvecklades som en ers\u00e4ttning f\u00f6r qmake, men till slut beslutades det att anv\u00e4nda CMake som det huvudsakliga byggsystemet f\u00f6r Qt p\u00e5 l\u00e5ng sikt. Utvecklingen av Qbs forts\u00e4tter nu som ett oberoende projekt, st\u00f6des av gemenskapen och intresserade utvecklare. F\u00f6r utvecklingen anv\u00e4nds fortfarande Qt Companys infrastruktur.         <\/p>\n<p>Den betydande f\u00f6r\u00e4ndringen i versionsnumret beror p\u00e5 implementeringen av en ny JavaScript-backend som ers\u00e4tter QtScript, som f\u00f6rklarades som f\u00f6r\u00e5ldrad i Qt 6. Att forts\u00e4tta underh\u00e5lla QtScript p\u00e5 egen hand har bed\u00f6mts som orealistiskt p\u00e5 grund av komplexa bindningar till JavaScriptCore, d\u00e4rf\u00f6r valdes den sj\u00e4lvst\u00e4ndiga och kompakta JavaScript-motorn QuickJS, skapad av Fabrice Bellard, som tidigare grundade projekten QEMU och FFmpeg. Motorn st\u00f6der ES2019-specifikationen och \u00f6vertr\u00e4ffar avsev\u00e4rt befintliga alternativ (XS med 35 %, DukTape mer \u00e4n tv\u00e5 g\u00e5nger, JerryScript tre g\u00e5nger och MuJS sju g\u00e5nger).     <\/p>\n<p>Ur perspektivet av utveckling av byggscenarier b\u00f6r \u00f6verg\u00e5ngen till den nya motorn inte leda till n\u00e5gra m\u00e4rkbara f\u00f6r\u00e4ndringar. Prestandan kommer ocks\u00e5 att f\u00f6rbli p\u00e5 ungef\u00e4r samma niv\u00e5. Bland skillnaderna obserseras str\u00e4ngare krav p\u00e5 anv\u00e4ndning av odefinierade v\u00e4rden i den nya motorn, vilket kan uppt\u00e4cka problem i befintliga projekt som f\u00f6rblev ouppt\u00e4ckta vid anv\u00e4ndning av QtScript.                  <\/ul>\n<p>K\u00e4lla: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=59032\">opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u041f\u0440\u0435\u0434\u0441\u0442\u0430\u0432\u043b\u0435\u043d \u0432\u044b\u043f\u0443\u0441\u043a \u0441\u0431\u043e\u0440\u043e\u0447\u043d\u043e\u0433\u043e \u0438\u043d\u0441\u0442\u0440\u0443\u043c\u0435\u043d\u0442\u0430\u0440\u0438\u044f Qbs 2.0. \u0414\u043b\u044f \u0441\u0431\u043e\u0440\u043a\u0438 Qbs \u0432 \u0447\u0438\u0441\u043b\u0435 \u0437\u0430\u0432\u0438\u0441\u0438\u043c\u043e\u0441\u0442\u0435\u0439 \u0442\u0440\u0435\u0431\u0443\u0435\u0442\u0441\u044f Qt, \u0445\u043e\u0442\u044f \u0441\u0430\u043c Qbs \u0440\u0430\u0441\u0441\u0447\u0438\u0442\u0430\u043d \u043d\u0430 \u043e\u0440\u0433\u0430\u043d\u0438\u0437\u0430\u0446\u0438\u044e \u0441\u0431\u043e\u0440\u043a\u0438 \u043b\u044e\u0431\u044b\u0445 \u043f\u0440\u043e\u0435\u043a\u0442\u043e\u0432. 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