Cannot configure ARM64 (outdated wiki?)

[Carlo Bramini]

Hello,
I'm trying to build latest WINE.git for Aarch64.
My system is:

uname -a
Linux debian 5.14.0-4-amd64 #1 SMP Debian 5.14.16-1 (2021-11-03) x86_64 GNU/Linux

I compiled successfully WINE for AMD64, so I have the tools.
Next, I installed the aarch64-linux-gnu cross compiler and the latest clang packages available.
Finally, I configured with:

../configure --host=aarch64-linux-gnu host_alias=aarch64-linux-gnu --with-wine-tools=../wine_amd64_build/ --without-freetype --without-x --enable-win64

as it is described here:

https://wiki.winehq.org/ARM64

but unfortunately it does not work.
The configure process hangs with this message:

checking whether aarch64-linux-gnu-gcc supports __builtin_ms_va_list... no
configure: error: You need clang >= 5.0 to build Wine for arm64.

It seems that I'm missing something and sadly the wiki does not give enough information.
I suspect that those information are completely wrong or just outdated, if you need to use clang for building for ARM64.
Can you give me some advice about which other packages I must install (if any) and/or if there are more things to do, like setting the clang options like target/sysroot/etc?

Talking about the build process, in my opinion it would be worth to integrate that wiki page with such information, if it's possible.

Sincerely.