Cross-compiling for aarch64 and armv6l on x86_64 does not seem to work

Cross-compiling for aarch64 and armv6l on x86_64 does not seem to work

[Peter Müller]

[-- Attachment #1: Type: text/plain, Size: 1096 bytes --]

Hello *,

currently having a bunch of kernel-related changes in the queue, I need to update the
kernel configuration files and LFS rootfiles on all architectures we support. Only
having an x86_64 system at hand, I thought "./make.sh shell --target=aarch64" would do
the trick (qemu is installed), but apparently isn't:

# ./make.sh build --target=aarch64
[lots of output logs omitted]
*** Build finished in 2:11:20                                                                                                                                                                                                        [ DONE ]
# ls
build  ccache  doc   .gitignore  ipfire-2.27.2gb-ext4.x86_64-full-core163.img.xz      ipfire-2.27.x86_64-full-core163.iso      langs  log       make.sh   src
cache  config  .git  html        ipfire-2.27.2gb-ext4.x86_64-full-core163.img.xz.md5  ipfire-2.27.x86_64-full-core163.iso.md5  lfs    .mailmap  packages  tools

If you could give me a hint on what I'm doing wrong, I would be frightfully grateful. :-)

Thanks, and best regards,
Peter Müller

Re: Cross-compiling for aarch64 and armv6l on x86_64 does not seem to work

[Michael Tremer]

[-- Attachment #1: Type: text/plain, Size: 1541 bytes --]

Hello,

> On 8 Jan 2022, at 14:05, Peter Müller <peter.mueller(a)ipfire.org> wrote:
> 
> Hello *,
> 
> currently having a bunch of kernel-related changes in the queue, I need to update the
> kernel configuration files and LFS rootfiles on all architectures we support. Only
> having an x86_64 system at hand, I thought "./make.sh shell --target=aarch64" would do
> the trick (qemu is installed), but apparently isn't:
> 
> # ./make.sh build --target=aarch64

You will need to have the —-target switch before the command:

./make.sh —-target=aarch64 build

Don’t forget to fetch the toolchain first and you might need to install a couple of packages that will emulate this architecture. An error message should let you know if anything is missing.

-Michael

> [lots of output logs omitted]
> *** Build finished in 2:11:20                                                                                                                                                                                                        [ DONE ]
> # ls
> build  ccache  doc   .gitignore  ipfire-2.27.2gb-ext4.x86_64-full-core163.img.xz      ipfire-2.27.x86_64-full-core163.iso      langs  log       make.sh   src
> cache  config  .git  html        ipfire-2.27.2gb-ext4.x86_64-full-core163.img.xz.md5  ipfire-2.27.x86_64-full-core163.iso.md5  lfs    .mailmap  packages  tools
> 
> If you could give me a hint on what I'm doing wrong, I would be frightfully grateful. :-)
> 
> Thanks, and best regards,
> Peter Müller

Re: Cross-compiling for aarch64 and armv6l on x86_64 does not seem to work

[Peter Müller]

[-- Attachment #1: Type: text/plain, Size: 2712 bytes --]

Hello Michael,

thanks for your reply.

> You will need to have the —-target switch before the command:
> 
> ./make.sh —-target=aarch64 build
> 
> Don’t forget to fetch the toolchain first and you might need to install a couple of packages that will emulate this architecture. An error message should let you know if anything is missing.

I did so, installed some missing packages, ran "/usr/sbin/qemu-binfmt-conf.sh", downloaded the toolchain
for aarch64, and tried to start the build. Sadly, it aborts without any (obvious) error message:

Packaged toolchain compilation                                                                                                                                                                                                        
Checking for necessary space on disk                                                                                                                                                                                                 [ DONE ]
Building LFS                                                                                                                                                                                                                          
stage2                                                                                                                                                                                                                               [ FAIL ]

    Jan  9 13:31:47: Building stage2

ERROR: Building stage2                                                                                                                                                                                                               [ FAIL ]
    Check /home/pmu/devel/IPFire-development/ipfire-2.x/log/_build.base.log for errors if applicable                                                                                                                                 [ FAIL ]
machine:/home/pmu/devel/IPFire-development/ipfire-2.x # cat /home/pmu/devel/IPFire-development/ipfire-2.x/log/_build.base.log
Jan  9 13:31:47: Building stage2 

That's literally it. Since make.sh does not seem to support a debug/verbose switch, and the output of
"bash -x ./make.sh --target=aarch64 build" does not gives any helpful information either, I'm afraid I
have to ask for help again.

In case it helps:

# cat /proc/sys/fs/binfmt_misc/qemu-aarch64
enabled
interpreter /usr/bin/qemu-aarch64-binfmt
flags: P
offset 0
magic 7f454c460201010000000000000000000200b700
mask ffffffffffffff00fffffffffffffffffeffffff

Thanks in advance, and best regards,
Peter Müller

Re: Cross-compiling for aarch64 and armv6l on x86_64 does not seem to work

[Michael Tremer]

[-- Attachment #1: Type: text/plain, Size: 3057 bytes --]

Hello,

What distribution is this?

> On 9 Jan 2022, at 13:36, Peter Müller <peter.mueller(a)ipfire.org> wrote:
> 
> Hello Michael,
> 
> thanks for your reply.
> 
>> You will need to have the —-target switch before the command:
>> 
>> ./make.sh —-target=aarch64 build
>> 
>> Don’t forget to fetch the toolchain first and you might need to install a couple of packages that will emulate this architecture. An error message should let you know if anything is missing.
> 
> I did so, installed some missing packages, ran "/usr/sbin/qemu-binfmt-conf.sh", downloaded the toolchain
> for aarch64, and tried to start the build. Sadly, it aborts without any (obvious) error message:
> 
> Packaged toolchain compilation                                                                                                                                                                                                        
> Checking for necessary space on disk                                                                                                                                                                                                 [ DONE ]
> Building LFS                                                                                                                                                                                                                          
> stage2                                                                                                                                                                                                                               [ FAIL ]
> 
>    Jan  9 13:31:47: Building stage2
> 
> ERROR: Building stage2                                                                                                                                                                                                               [ FAIL ]
>    Check /home/pmu/devel/IPFire-development/ipfire-2.x/log/_build.base.log for errors if applicable                                                                                                                                 [ FAIL ]
> machine:/home/pmu/devel/IPFire-development/ipfire-2.x # cat /home/pmu/devel/IPFire-development/ipfire-2.x/log/_build.base.log
> Jan  9 13:31:47: Building stage2 
> 
> That's literally it. Since make.sh does not seem to support a debug/verbose switch, and the output of
> "bash -x ./make.sh --target=aarch64 build" does not gives any helpful information either, I'm afraid I
> have to ask for help again.

Well… where does it stop?

QEMU will definitely complain if something isn’t right. Can you see QEMU being executed at all?

-Michael

> 
> In case it helps:
> 
> # cat /proc/sys/fs/binfmt_misc/qemu-aarch64
> enabled
> interpreter /usr/bin/qemu-aarch64-binfmt
> flags: P
> offset 0
> magic 7f454c460201010000000000000000000200b700
> mask ffffffffffffff00fffffffffffffffffeffffff
> 
> Thanks in advance, and best regards,
> Peter Müller

Re: Cross-compiling for aarch64 and armv6l on x86_64 does not seem to work

[Arne Fitzenreiter]

[-- Attachment #1: Type: text/plain, Size: 1296 bytes --]

Hello Peter,

target must be the first parameter.

./make.sh --target=aarch64 gettoolchain
./make.sh --target=aarch64 downloadsrc
./make.sh --target=aarch64 build

should work but i have not used this since ages because it is
sloooow. I think it is better Micheal creates a vm on the mustang for
this.

Arne


Am 2022-01-08 15:05, schrieb Peter Müller:
> Hello *,
> 
> currently having a bunch of kernel-related changes in the queue, I
> need to update the
> kernel configuration files and LFS rootfiles on all architectures we
> support. Only
> having an x86_64 system at hand, I thought "./make.sh shell
> --target=aarch64" would do
> the trick (qemu is installed), but apparently isn't:
> 
> # ./make.sh build --target=aarch64
> [lots of output logs omitted]
> *** Build finished in 2:11:20
> 
> 
>                 [ DONE ]
> # ls
> build  ccache  doc   .gitignore
> ipfire-2.27.2gb-ext4.x86_64-full-core163.img.xz
> ipfire-2.27.x86_64-full-core163.iso      langs  log       make.sh
> src
> cache  config  .git  html
> ipfire-2.27.2gb-ext4.x86_64-full-core163.img.xz.md5
> ipfire-2.27.x86_64-full-core163.iso.md5  lfs    .mailmap  packages
> tools
> 
> If you could give me a hint on what I'm doing wrong, I would be
> frightfully grateful. :-)
> 
> Thanks, and best regards,
> Peter Müller