{"id":208649,"date":"2016-06-03T01:14:56","date_gmt":"2016-06-03T01:14:56","guid":{"rendered":"https:\/\/eenewseurope.artwhere.co\/un-avis-dexpert-sur-les-derniers-outils-pour-linux-embarque\/"},"modified":"2016-06-03T01:14:56","modified_gmt":"2016-06-03T01:14:56","slug":"un-avis-dexpert-sur-les-derniers-outils-pour-linux-embarque","status":"publish","type":"post","link":"https:\/\/www.ecinews.fr\/fr\/un-avis-dexpert-sur-les-derniers-outils-pour-linux-embarque\/","title":{"rendered":"Un avis d&rsquo;expert sur les derniers outils pour \u00ab\u00a0Linux embarqu\u00e9\u00a0\u00bb"},"content":{"rendered":"<p><em>Par Pierre Ficheux, Directeur technique chez Smile<\/em><\/p>\n<p>Autrefois pr\u00e9sents mais inconnus du grand public, les syst\u00e8mes embarqu\u00e9s ont aujourd&rsquo;hui envahi notre quotidien et les logiciels libres y ont une place pr\u00e9pond\u00e9rante, en particulier le syst\u00e8me d&rsquo;exploitation Linux. Le noyau Linux est pr\u00e9sent dans le syst\u00e8me Android de Google utilis\u00e9 dans plus d&rsquo;un milliard de t\u00e9l\u00e9phones mobiles.<br \/>\nLe syst\u00e8me d&rsquo;exploitation Linux, dans sa version \u00ab\u00a0embarqu\u00e9e\u00a0\u00bb, est omnipr\u00e9sent sur les bo\u00eetiers d&rsquo;acc\u00e8s \u00e0 Internet et \u00e0 la t\u00e9l\u00e9vision num\u00e9rique (la fameuse \u00ab\u00a0set-top box\u00a0\u00bb). Derni\u00e8rement, ce m\u00eame Linux a envahi l&rsquo;industrie automobile et anime les syst\u00e8mes d\u00e9nomm\u00e9s IVI (In Vehicle Infotainment) incluant, entre-autres, la navigation, la diffusion multim\u00e9dia dans l&rsquo;habitacle ou l&rsquo;assistance \u00e0 la conduite.<\/p>\n<p>La construction de tels syst\u00e8mes est tr\u00e8s \u00e9loign\u00e9e de l&rsquo;utilisation habituelle de Linux dans l&rsquo;industrie qui est bas\u00e9e sur des \u00ab\u00a0distributions\u00a0\u00bb fournies par des \u00e9diteurs commerciaux (Red Hat, SuSE, etc.) ou des communaut\u00e9s (Debian, Ubuntu, etc.). Sur un PC classique, la m\u00e9moire et le disque dur ont des capacit\u00e9s quasiment illimit\u00e9es et, m\u00eame si l&rsquo;on a la volont\u00e9 de ma\u00eetriser les consommations d&rsquo;espace et d&rsquo;\u00e9nergie, les contraintes sont bien moindres que dans le domaine des syst\u00e8mes embarqu\u00e9s.<\/p>\n<p>L&rsquo;utilisation d&rsquo;une distribution g\u00e9n\u00e9rique incluant des milliers de composants binaires n&rsquo;est souvent pas acceptable pour une industrie ayant de gros besoins \u00e0 la fois d&rsquo;optimisation, de tra\u00e7abilit\u00e9 et bien entendu de s\u00e9curit\u00e9. Outre cela, les syst\u00e8mes embarqu\u00e9s utilisent souvent des architectures diff\u00e9rentes de celles des PC (entre-autres ARM, et non Intel x86) et l&rsquo;utilisation directe d&rsquo;une distribution binaire n&rsquo;est pas envisageable. Cette tendance ne fera que s&rsquo;amplifier avec le d\u00e9veloppement pr\u00e9vu de l&rsquo;Internet des objets qui est bas\u00e9 sur des syst\u00e8mes embarqu\u00e9s.<\/p>\n<hr \/>\n<p>De plus en plus de projets utilisent des outils nomm\u00e9s \u00ab\u00a0build systems\u00a0\u00bb (outils de construction) permettant de produire, \u00e0 partir des sources des composants, un syst\u00e8me Linux optimis\u00e9 sur la base de sp\u00e9cifications strictes tant au niveau de l&rsquo;espace utilis\u00e9 que de la s\u00e9curit\u00e9 de fonctionnement.<\/p>\n<p>Le projet Yocto est aujourd&rsquo;hui le plus fr\u00e9quent car port\u00e9 par les leaders de l&rsquo;industrie du mat\u00e9riel et du logiciel dont Intel, Mentor Graphics, TI, NXP\/Freescale, Wind River.<br \/>\nYocto est un outil modulaire fonctionnant en couches logicielles que l&rsquo;on assemble, en fonction des besoins, en cible mat\u00e9rielle, interfaces homme machine ou applications m\u00e9tier.<\/p>\n<p>Le projet Buildroot a la m\u00eame approche mais il est plus simple d&rsquo;acc\u00e8s. Port\u00e9 par une communaut\u00e9 plus modeste, et non financ\u00e9e par des g\u00e9ants de l&rsquo;industrie, il permet de mettre en place un \u00ab\u00a0firmware\u00a0\u00bb bas\u00e9 sur une distribution Linux all\u00e9g\u00e9e.<\/p>\n<p><a href=\"http:\/\/www.smile.fr\/Ressources\/Livres-blancs\/Ingenierie\/Linux-pour-l-embarque\" target=\"_blank\" rel=\"noopener\">www.smile.fr\/Ressources\/Livres-blancs\/Ingenierie\/Linux-pour-l-embarque<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Le livre blanc propos\u00e9 par Smile, une soci\u00e9t\u00e9 d\u2019experts des solutions \u00ab\u00a0open source\u00a0\u00bb, permet, par une approche technique, pragmatique et ind\u00e9pendante d&rsquo;un \u00e9diteur commercial, d&rsquo;\u00e9valuer les deux outils pour Linux embarqu\u00e9, Yocto et Buildroot, en r\u00e9alisant des tests r\u00e9els sur la c\u00e9l\u00e8bre plate-forme Raspberry Pi. Il offre une aide pr\u00e9cieuse pour choisir l&rsquo;outil et l&rsquo;assistance technique qui conviennent le mieux aux projets.<\/p>\n","protected":false},"author":9,"featured_media":208650,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[],"tags":[],"domains":[47],"ppma_author":[1141],"class_list":["post-208649","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","domains-electronique-eci"],"acf":[],"yoast_head":"<title>Un avis d&#039;expert sur les derniers outils pour &quot;Linux embarqu\u00e9&quot; ...<\/title>\n<meta name=\"description\" content=\"Le livre blanc propos\u00e9 par Smile, une soci\u00e9t\u00e9 d\u2019experts des solutions &quot;open source&quot;, permet, par une approche technique, pragmatique et ind\u00e9pendante...\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.ecinews.fr\/fr\/wp-json\/wp\/v2\/posts\/208649\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Un avis d&#039;expert sur les derniers outils pour &quot;Linux embarqu\u00e9&quot;\" \/>\n<meta property=\"og:description\" content=\"Le livre blanc propos\u00e9 par Smile, une soci\u00e9t\u00e9 d\u2019experts des solutions &quot;open source&quot;, permet, par une approche technique, pragmatique et ind\u00e9pendante d&#039;un \u00e9diteur commercial, d&#039;\u00e9valuer les deux outils pour Linux embarqu\u00e9, Yocto et Buildroot, en r\u00e9alisant des tests r\u00e9els sur la c\u00e9l\u00e8bre plate-forme Raspberry Pi. Il offre une aide pr\u00e9cieuse pour choisir l&#039;outil et l&#039;assistance technique qui conviennent le mieux aux projets.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.ecinews.fr\/fr\/wp-json\/wp\/v2\/posts\/208649\/\" \/>\n<meta property=\"og:site_name\" content=\"EENewsEurope\" \/>\n<meta property=\"article:published_time\" content=\"2016-06-03T01:14:56+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.ecinews.fr\/wp-content\/uploads\/import\/default\/files\/sites\/default\/files\/images\/eci7904_pierre_ficheux_smile_r.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"432\" \/>\n\t<meta property=\"og:image:height\" content=\"336\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Alain Dieul\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Alain Dieul\" \/>\n\t<meta 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