Building for ELFv2

[Cameron Berkenpas]

I'm building on the system I wish to update. The system itself is 
13.0-CURRENT (r356092) and based on gcc 4.2.1. I was going to initially 
try a live update, but I wasn't sure how successful that would be (but 
this is a VM so I'd be able to rollback without difficulty). If that 
didn't work out, I was going to try and create some bootable media and 
install a new instance from that.

I have currently allocated 32GB of memory and there appears to be about 
3G of swap and 32 threads.

The physical host is a Talos II (so POWER9) running Linux/KVM/libvirt.

Thanks,

On 12/28/19 6:39 PM, Mark Millard wrote:
>
> On 2019-Dec-28, at 15:28, Cameron Berkenpas <cam at neo-zeon.de> wrote:
>
>> Hello,
>>
>> How can one build FreeBSD 13.0-CURRENT for ELFv2 support?
>>
>> I've installed xtoolchain-llvm90, and I run:
>> CROSS_TOOLCHAIN=llvm90 make buildenv
>>
>>  From here buildworld fails pretty early on with:
>> /usr/src/sys/contrib/libnv/nvpair.c:33:10: fatal error: 'sys/cdefs.h' file not found
>>
>> I can add "-I/usr/include" and so on to /etc/src.conf to hack around this, it just goes a bit further and finds other headers missing.
>>
>> As far as I can tell, $SYSROOT (/usr/obj/usr/src/powerpc.powerpc64/tmp) isn't being properly setup properly which is resulting in missing headers.
>>
>> I've done some searching and haven't really found anything too helpful. But perhaps I just don't know what to look for.
>>
>> Thanks!
>>
> You may want to specify what type of context(s) you
> can try to bootstrap into ELFv2 from. For example:
> cross-build? self-hosted only? system version starting
> from on the machine doing the build? gcc 4.2.1 based
> starting point? single boot media vs. able to have
> an old context produce separate/new boot media?
> the amount of RAM and swap/page space? (You may be
> able to come up with more things to identify that
> might contribute to how to progress.)
>
> I'm working towards updating, but I'll likely be
> cross building and producing new media from a
> bootable backup of the old media. (Helps avoid
> potential live-update issues.) So what I end
> up doing may well not match what you would do.
>
> ===
> Mark Millard
> marklmi at yahoo.com
> ( dsl-only.net went
> away in early 2018-Mar)
>
>