RE: toolchain name for building linux kernel?

[<ckim@etri.re.kr>]

Hi Valdis, and all,

I tried it again, but I had error with aarch-linux-gnu- . 
So I changed it  with

export ARCH=arm64
export CROSS_COMPILE=aarch64-none-elf-

and then, 

make defconfig
make vmlinux

and vmlinux was generated.

So the kernel was built with aarch64-non-elf- toolchain as I thought normal.
Maybe last time there was some mistake..
Thank you!

Chan Kim

> -----Original Message-----
> From: ckim@etri.re.kr <ckim@etri.re.kr>
> Sent: Wednesday, November 18, 2020 2:18 PM
> To: 'Valdis Klētnieks' <valdis.kletnieks@vt.edu>
> Cc: kernelnewbies@kernelnewbies.org
> Subject: RE: toolchain name for building linux kernel?
> 
> 
> Thanks for replying. Yes, at that time, it was sparc and this time it's
> aarch64. I'm building the kernel on x86_64 machine.
> So target is aarch64, host is x86_64.
> My question is about the end part (elf or linux).
> To build linux kernel, shouldn't it be elf? (using libraries for
baremetal,
> like newlib) And to build a application that'll run on linux, shouldn't it
> be linux?(using libraries for linux) Please see that last part of
> https://wiki.osdev.org/Target_Triplet.
> I wonder why the toolchain name that I built linux kernel ends with
-linux.
> Chan
> 
> > -----Original Message-----
> > From: Valdis Kletnieks <valdis@vt.edu> On Behalf Of Valdis Kl?tnieks
> > Sent: Tuesday, November 17, 2020 3:31 PM
> > To: ckim@etri.re.kr
> > Cc: kernelnewbies@kernelnewbies.org
> > Subject: Re: toolchain name for building linux kernel?
> >
> > On Tue, 17 Nov 2020 14:37:00 +0900, ckim@etri.re.kr said:
> >
> > > Some years ago, I used to use sparc-ab-elf- to build linux kernel.
> >
> > That will probably build a kernel for the Sun SPARC architecture...
> >
> > > Recently, I found a website that I should use aarch64-linux-gnu tool
> > > to build the kernel.
> > >
> > > I tried following it and it generated vmlinux file. (I can't find
> > > the web page link, but I'm sure I wrote that procedure down when I
> > > built
> > > vmlinux)
> >
> > That vmlinux file will only be useful for a 64-bit ARM architecture.
> >
> > What sort of machine are you going to run the newly built kernel on,
> > and what sort of machine are you using for the build?
> >
> > (If you're building on the system you'll be booting it on, the
> > distro's gcc and make commands should be sufficient)
> 
> 
> 
> 
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