{"id":98248,"date":"2020-10-28T02:42:23","date_gmt":"2020-10-28T00:42:23","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/vypusk-standartnoj-si-biblioteki-picolibc-1-4-7"},"modified":"2020-11-18T00:58:42","modified_gmt":"2020-11-17T22:58:42","slug":"vypusk-standartnoj-si-biblioteki-picolibc-1-4-7","status":"publish","type":"post","link":"https:\/\/prohoster.info\/da\/blog\/news\/vypusk-standartnoj-si-biblioteki-picolibc-1-4-7","title":{"rendered":"Udgivelsen af standard C-biblioteket PicoLibc 1.4.7","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Keith Packard, aktiv udvikler af Debian, leder af X.Org-projektet og skaber af mange X-udvidelser, herunder XRender, XComposite og XRandR, <noindex><a rel=\"nofollow\" href=\"https:\/\/github.com\/picolibc\/picolibc\/releases\">udgav<\/a><\/noindex> udgivelse af den standard C-bibliotek <noindex><a rel=\"nofollow\" href=\"https:\/\/keithp.com\/picolibc\/\">PicoLibc 1.4.7<\/a><\/noindex>, der udvikles til brug p\u00e5 indlejrede enheder med begr\u00e6nset st\u00f8rrelse p\u00e5 fast lager og RAM. Ved udviklingen er en del af koden l\u00e5nt fra biblioteket <noindex><a rel=\"nofollow\" href=\"http:\/\/sourceware.org\/newlib\/\">newlib<\/a><\/noindex> fra Cygwin-projektet og <noindex><a rel=\"nofollow\" href=\"https:\/\/www.nongnu.org\/avr-libc\/\">AVR Libc<\/a><\/noindex>, der blev udviklet til Atmel AVR-mikrocontrollere. Koden til PicoLibc <noindex><a rel=\"nofollow\" href=\"https:\/\/github.com\/keith-packard\/picolibc\">distribueres<\/a><\/noindex> er under BSD-licens. Biblioteket underst\u00f8tter kompilering for arkitekturer som ARM (32-bit), i386, RISC-V, x86_64 og PowerPC.<\/p>\n<p>Projektet blev oprindeligt udviklet under navnet &#171;newlib-nano&#187; og havde til form\u00e5l at redesign nogle ressourcekr\u00e6vende funktioner fra Newlib, som var problematiske at bruge p\u00e5 indlejrede enheder med begr\u00e6nset RAM. For eksempel blev stdio-funktionerne erstattet med en kompakt version fra avrlibc-biblioteket. Koden blev ogs\u00e5 renset for ubrukte komponenter, der ikke var licenseret under BSD, som ikke blev brugt i builden til indlejrede enheder. En forsimplet version af initialiseringskoden (crt0) blev tilf\u00f8jet, og implementeringen af lokale tr\u00e5de blev \u00e6ndret fra &#8216;struct _reent&#8217; til en TLS-mekanisme.<noindex><a rel=\"nofollow\" href=\"https:\/\/en.wikipedia.org\/wiki\/Thread-local_storage\">tr\u00e5d-lokal lagring<\/a><\/noindex>). Byggev\u00e6rkt\u00f8jet Meson anvendes. <\/p>\n<p>I den nye version:<\/p>\n<ul>\n<li class=\"l\"> Muligheden for at bygge med brug af <noindex><a rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=50470\">matematisk verificeret<\/a><\/noindex> kompilator <noindex><a rel=\"nofollow\" href=\"http:\/\/compcert.inria.fr\/compcert-C.html\">CompCert<\/a><\/noindex>.\n<li class=\"l\"> Underst\u00f8ttelse af Clang-kompilator er blevet tilf\u00f8jet.\n<li class=\"l\"> Funktionen &#8216;gamma&#8217; er nu i overensstemmelse med adf\u00e6rden hos Glibc.\n<li class=\"l\"> I nano-malloc implementeringen er der sikret obligatorisk oprydning af den returnerede hukommelse.\n<li class=\"l\"> Ydelsen for nano-realloc er forbedret, is\u00e6r ved fusion af frie blokke og udvidelse af bunke-st\u00f8rrelse.\n<li class=\"l\"> Et s\u00e6t test er blevet tilf\u00f8jet for at kontrollere korrektheden af malloc.\n<li class=\"l\"> Der er forbedret underst\u00f8ttelse til Windows-platformen og tilf\u00f8jet muligheden for at bygge med mingw-v\u00e6rkt\u00f8jet.\n<li class=\"l\"> P\u00e5 ARM-systemer anvendes hardware-registret TLS (Thread-Local Storage), hvis det er tilg\u00e6ngeligt.\n<\/ul>\n<p><noindex><a rel=\"nofollow\" name=\"link\"><\/a><\/noindex><\/p>\n<p>Kilde: <a \ncontent=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=53962\">opennet.ru<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u041a\u0438\u0442 \u041f\u0430\u043a\u043a\u0430\u0440\u0434 (Keith Packard), \u0430\u043a\u0442\u0438\u0432\u043d\u044b\u0439 \u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u0447\u0438\u043a Debian, \u043b\u0438\u0434\u0435\u0440 \u043f\u0440\u043e\u0435\u043a\u0442\u0430 X.Org \u0438 \u0441\u043e\u0437\u0434\u0430\u0442\u0435\u043b\u044c \u043c\u043d\u043e\u0436\u0435\u0441\u0442\u0432\u0430 X-\u0440\u0430\u0441\u0448\u0438\u0440\u0435\u043d\u0438\u0439, \u0432\u043a\u043b\u044e\u0447\u0430\u044f XRender, XComposite \u0438 XRandR, \u043e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043b \u0432\u044b\u043f\u0443\u0441\u043a \u0441\u0442\u0430\u043d\u0434\u0430\u0440\u0442\u043d\u043e\u0439 \u0421\u0438-\u0431\u0438\u0431\u043b\u0438\u043e\u0442\u0435\u043a\u0438 PicoLibc 1.4.7, \u0440\u0430\u0437\u0432\u0438\u0432\u0430\u0435\u043c\u043e\u0439 \u0434\u043b\u044f \u043f\u0440\u0438\u043c\u0435\u043d\u0435\u043d\u0438\u044f \u043d\u0430 \u0432\u0441\u0442\u0440\u0430\u0438\u0432\u0430\u0435\u043c\u044b\u0445 \u0443\u0441\u0442\u0440\u043e\u0439\u0441\u0442\u0432\u0430\u0445 \u0441 \u043e\u0433\u0440\u0430\u043d\u0438\u0447\u0435\u043d\u043d\u044b\u043c \u0440\u0430\u0437\u043c\u0435\u0440\u043e\u043c \u043f\u043e\u0441\u0442\u043e\u044f\u043d\u043d\u043e\u0433\u043e \u0445\u0440\u0430\u043d\u0438\u043b\u0438\u0449\u0430 \u0438 \u043e\u043f\u0435\u0440\u0430\u0442\u0438\u0432\u043d\u043e\u0439 \u043f\u0430\u043c\u044f\u0442\u0438. \u041f\u0440\u0438 \u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u043a\u0435 \u0447\u0430\u0441\u0442\u044c \u043a\u043e\u0434\u0430 \u0437\u0430\u0438\u043c\u0441\u0442\u0432\u043e\u0432\u0430\u043d\u0430 \u0438\u0437 \u0431\u0438\u0431\u043b\u0438\u043e\u0442\u0435\u043a\u0438 newlib \u043e\u0442 \u043f\u0440\u043e\u0435\u043a\u0442\u0430 \u0421ygwin \u0438 AVR Libc, \u0440\u0430\u0437\u0432\u0438\u0432\u0430\u0432\u0448\u0435\u0439\u0441\u044f \u0434\u043b\u044f [&hellip;]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-98248","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.3 - aioseo.com -->\n\t<meta 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