[llvmlinux] compile linux kernel for ARM with Clang-3.6

[Davide Rombolà]

atm only nexus 9 is on 3.10
thanks for the support guys!!

2014-11-14 0:00 GMT+01:00 Vinícius Tinti <viniciustinti at gmail.com>:

> On Thu, Nov 13, 2014 at 8:51 PM, Charlebois, Mark <mcharleb at quicinc.com>
> wrote:
> > I'll try and have a look at the nexus 5 target over the weekend. I won't
> be
> > able to work on it before then.
> >
> >
> > -Mark
> >
> > ________________________________
> > From: llvmlinux-bounces at lists.linuxfoundation.org
> > <llvmlinux-bounces at lists.linuxfoundation.org> on behalf of Behan Webster
> > <behanw at converseincode.com>
> > Sent: Thursday, November 13, 2014 2:48 PM
> > To: Davide Rombolà
> > Cc: llvm >> Compiling the Linux Kernel with Clang/LLVM
> > Subject: Re: [llvmlinux] compile linux kernel for ARM with Clang-3.6
> >
> > The Nexus5 build is still a work in progress. Not yet working.
> >
> > However, the error message you've posted makes it appear that the x86
> > version of the assembler is being called instead of the ARM one. No doubt
> > since it is a 3.4 kernel it doesn't have all the appropriate patches in
> > place since we spend a lot more time on the mainline patches.
> >
> > Cross posting to the LLVMLinux list so that others who are interested
> might
> > be able to help you.
> >
> > Behan
> >
> > On 11/13/14 10:13, Davide Rombolà wrote:
> >
> > I'm on linux kernel 3.4 arch mach-msm (nexus 5), the error is:
> >
> > /usr/bin/as: unrecognized option '-mfloat-abi=softfp' clang-3: error:
> > assembler command failed with exit code 1
> >
> > Il 13/nov/2014 18:43 "Behan Webster" <behanw at converseincode.com> ha
> scritto:
> >>
> >> On 11/13/14 03:42, Davide Rombolà wrote:
> >>
> >> Hi!
> >> i'm trying to compile linux kernel for arm with clang-3.5.
> >> i followed this guide
> http://llvm.linuxfoundation.org/index.php/Main_Page
> >> and all went ok.
> >>
> >> Depending on which kernel version you are building, you will need a
> clang
> >> newer than 3.5. Currently only the pre 3.6 clang will work.
> >>
> >>
> >> On compilation clang gave me error on "-mfloat-abi=soft" flag.
> >>
> >> I'd have to see the error. But remember that the kernel can't use
> floating
> >> point opcodes (with very few exceptions).
> >>
> >>
> >> this flag only apper in "arch/arm/vfp/Makefile", i deleted it but clang
> >> still gave me the same error.
> >>
> >> Could you suggest me a solution for this?
>
> As far as I remember Nexus 7 is also with kernel 3.4.
> It is being long since I have built it so probably it is broken but I
> will sync/fix it now.
>
> Then I try with Nexus 5 and let you know.
>
> >> Thanks for your time,
> >>
> >> Like I said, I'd need to see the error. I don't have enough info to be
> >> able to even guess.
> >>
> >> Behan
> >>
> >> --
> >> Behan Webster
> >> behanw at converseincode.com
> >
> >
> >
> > --
> > Behan Webster
> > behanw at converseincode.com
> >
> >
> > _______________________________________________
> > LLVMLinux mailing list
> > LLVMLinux at lists.linuxfoundation.org
> > https://lists.linuxfoundation.org/mailman/listinfo/llvmlinux
>
>
>
> --
> Simplicity is the ultimate sophistication
>
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