{"id":1975,"date":"2011-04-29T11:31:18","date_gmt":"2011-04-29T09:31:18","guid":{"rendered":"http:\/\/glandium.org\/blog\/?p=1975"},"modified":"2011-04-29T11:31:18","modified_gmt":"2011-04-29T09:31:18","slug":"faster-linux-builds","status":"publish","type":"post","link":"https:\/\/glandium.org\/blog\/?p=1975","title":{"rendered":"Faster Linux builds"},"content":{"rendered":"

After two failed attempts last year, and a few glitches yesterday, we finally managed to get our Linux (and, obviously, Linux64) builds to use GCC 4.5, with aggressive optimization (-O3) and profile guided optimization enabled. This means we are finally using a more modern toolchain, opening opportunities for things such as static analysis. This also means we are now producing a faster Firefox, now much closer to the Windows builds on the same hardware on various performance tests.<\/p>\n

A nice side effect of some of the work I have done<\/a> to make the switch possible is that these builds will also work on older Linux platforms such as RedHat\/CentOS 5, or possibly older (as long as they come with libstdc++ from GCC 4.1).<\/p>\n

The first Firefox release to benefit these new settings should be Firefox 6.<\/p>\n

A few branches other than mozilla-central have also been switched, most notably Try, for which there is a known issue if you push something too old. Please make sure to read the corresponding information on wiki.m.o<\/a> for a workaround. A Mercurial hook is going to be put in place to issue a warning if there are chances your build will fail (it will, however, not prevent the push).<\/p>\n

Thanks to Chris Atlee, Rail Aliiev, Taras Glek, Justin Lebar and all those I forgot or am not aware of for their assistance and\/or past involvement in the previous attempts.<\/p>\n","protected":false},"excerpt":{"rendered":"

After two failed attempts last year, and a few glitches yesterday, we finally managed to get our Linux (and, obviously, Linux64) builds to use GCC 4.5, with aggressive optimization (-O3) and profile guided optimization enabled. This means we are finally using a more modern toolchain, opening opportunities for things such as static analysis. This also […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[25],"tags":[23],"class_list":["post-1975","post","type-post","status-publish","format-standard","hentry","category-planet-mozilla","tag-en"],"_links":{"self":[{"href":"https:\/\/glandium.org\/blog\/index.php?rest_route=\/wp\/v2\/posts\/1975","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/glandium.org\/blog\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/glandium.org\/blog\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/glandium.org\/blog\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/glandium.org\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1975"}],"version-history":[{"count":4,"href":"https:\/\/glandium.org\/blog\/index.php?rest_route=\/wp\/v2\/posts\/1975\/revisions"}],"predecessor-version":[{"id":1990,"href":"https:\/\/glandium.org\/blog\/index.php?rest_route=\/wp\/v2\/posts\/1975\/revisions\/1990"}],"wp:attachment":[{"href":"https:\/\/glandium.org\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1975"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/glandium.org\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1975"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/glandium.org\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1975"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}