Hello, On 03/20/2012 12:37 PM, drago01 wrote: > On Tue, Mar 20, 2012 at 5:34 PM, Brendan Conoboy <blc@xxxxxxxxxx> wrote: >> On 03/20/2012 09:21 AM, Ralf Corsepius wrote: >>> >>> That said, I considera cross-building environment for secondary arch to >>> be inevitable, which would at least help for the class of issues, I am >>> referring to above. >> >> >> I'm a big fan of cross compilation, but introducing it into Fedora in order >> to support ARM seems unlikely to succeed for too many reasons to go into. > > The reasons are? .... Fedora generally doesn't cross-compile because you have to minimally run certain target configuration stuff on the host, and there are many other hardcoded expectations. [ Aside - skip this bit - because someone is going to mention it and take this thread onto a wild tangent, yes you can use distcc hacks, yes, there is/was Scratchbox, and yes there are many other cute hacks. We haven't proposed any of this because we want to be boring, we want to win acceptance by doing what x86 does in as many cases as reasonable. It isn't reasonable to expect ARM to install using Anaconda on a $25 target, but it is reasonable to expect on-target build ]. >> Let's figure out how to make native compilation work *better*, how to make >> koji work *better* when more architectures are involved than just x86. > > The hardware is way slower ... so we can just build on faster hardware > (x86_64). Which is the only sane way to do it. > Trying to build on ARM directly is kind of a gimmick but nothing one > can seriously use to build a whole operating system. (Yes it works but > it is way to slow). Well, we've done a number of mass rebuilds, a complete bootstrap from scratch, and several releases now. So, it might be a "gimmick", but it works. We need to stop thinking of ARM as it was 10 years ago. This year, we're going to see systems with 288+ cores in 2U of rack space. Next year, we're going to see Cortex A-15 systems that will be much faster still, and the year after, we're going to see 64-bit systems with at least 8 highly performing cores. It's not all about performance though. ARM isn't going to beat x86 in a speed race...that is not the goal. It's about aggregate performance, not individual node performance at the high end, and about mass availability at the low end. We can remain an x86-only primary distro. But that won't help address the longer term problems we will face. I'll spare the hyperbole for the moment, but I will add that this is a multi-year journey that we want to begin now. Yes, there are rough edges, yes this is cutting edge stuff, yes that is precisely what Fedora is all about. Jon. -- devel mailing list devel@xxxxxxxxxxxxxxxxxxxxxxx https://admin.fedoraproject.org/mailman/listinfo/devel
