Compile to ARM64 with qemu-static

[Vincent Bernat <bernat@debian.org>]

Hey!

I am using qemu-user-static to compile to ARM64 from AMD64. There is a 
long-time bug with recent versions of QEMU where you would get a segfault:

https://gitlab.com/qemu-project/qemu/-/issues/1913

I was using qemu-user-static_7.2+dfsg-7+deb12u5_amd64.deb for quite some 
time, but recently, it started to segfault too. This is quite 
inconvenient as I have no solution to easily compile to ARM64.

I am using cowbuilder. What would be the most straightforward way to 
compile packages to ARM64? Would it be allowed to use ARM64 porter boxes 
for this? This is mostly for HAProxy packages, so I don't intend to 
compile a lot of packages.

Thanks.