Hi I made a multilib repo of ArchLinux ARM.
The pkgbuilds are at here:
github.com/archlinuxarm-lib32/PKGBUILDs
Later I'll upload all binary packages.(Still struggling with gcc, trying to make it reproduce itself, but seems gcc hardcored to find libraries under /usr/lib in some config files when build and host matches... You'll need to use a armv7l cross compiler before the lib32-gcc package is available to install)
Maybe I'll add circleci auto build later to keep the packages fresh.
Current I only have gcc, zlib, glibc and other gcc related libs on the repo, but hopefully I'll port all lib32 multilib packages from Arch Linux multilib repo to it.
You'll need to use the glibc from my multilib repo to get it working. I may strip that package to leave only lib32-glibc later.
Also may add box86 to the repo, since that's one of the reasons why this repo exists.