On Wednesday, March 11, 2015 at 9:10:43 PM UTC+1, bobow...@gmail.com wrote: > On Wednesday, 11 March 2015 10:54:59 UTC, bo...@mozilla.com wrote: > > On Tuesday, March 10, 2015 at 5:06:31 PM UTC, Ehsan Akhgari wrote: > > > > > >> Here's a push in case the bugs don't exist in certain builds: > > > >> https://treeherder.mozilla.org/#/jobs?repo=try&revision=044e896fc6fa > > > > > > > > I was looking at the log for a B2G Device Image build (I think it > > > > was the one for Nexus 5-L) a few days (less than a week) ago, and it > > > > was using gcc 4.8 for the target and gcc 4.6 for the host (assuming > > > > I was reading the logs correctly). > > > > > > > > I point this out because: > > > > > > > > (1) the device image build isn't in that try run, and > > > > > > > > (2) it's not clear to me that the compiler version checks check > > > > both the target and host compiler versions when cross-compiling > > > > > > That's a good point. I don't think we have any checks for the host > > > compiler. > > > > I'll admit to knowing nothing about B2G Device Image builds, but I see that > > setting the default host compiler is in the instructions on the MDN B2G > > build instructions [1]. > > What are the reasons for this? > > The Firefox OS instructions [2] seem to suggest this is only needed for > > older versions of B2G. > > Are there automated Device Image builders that we will need to get updated? > > Do we need to inform partners, who might be using gcc-4.6? > > > > Am I right in thinking that B2G only currently uses up to Gecko 37? > > This may explain why we haven't seen a problem, but we might start seeing > > one since a merge a week ago. > > If we do a patch (for bug 1134487) is on mozilla-inbound and has been > > requested for uplift to beta. > > > > [1] > > https://developer.mozilla.org/en-US/Firefox_OS/Preparing_for_your_first_B2G_build > > [2] > > https://developer.mozilla.org/en-US/Firefox_OS/Firefox_OS_build_prerequisites > > This thread seems to have got de-railed somewhat. > Could someone help me with my questions above? > Thanks.
AFAIK, in B2G we are tied to the same host compiler version that our Android base platform needs. This is gcc-4.6 for ICS and JB devices (not really sure if KK/LL works with newer ones, but I'll bet they do). Of course, we could fix any incompatibilty and create our patches/forks so we can bump up our host compiler version, but moving away from Android base requierments is something that we should take with care. As Ryan stated earlier Gecko is being built with gcc-4.8 for all ICS/LL devices and gcc-4.7 for JB/KK (except Flatfish which is gcc-4.8 too), and I was going to start working on migrating to gcc-4.9 within the next coming days. When I finish, we could discuss if we should migrate _all_ B2G devices to the same toolchain version... but this is another story. _______________________________________________ dev-platform mailing list dev-platform@lists.mozilla.org https://lists.mozilla.org/listinfo/dev-platform
