raspberrypi-libs have wrong .pc files
APKBUILD for raspberrypi-libs removes /opt/vc/lib/*.a files, but leaves pkgconfig .pc files untouched which references deleted .a library.
This means that if somebody uses “pkg-config —libs brcmegl” in their makefile/buildsystem then the output won’t be usable for linker command due to missing libvchostif.a file.
Please either patch brcmeg.pc and egl.pc files to not have reference to
vchostif library, or leave libvchostif.a file in raspberrypi-dev
Here is line that removes *.a files: https://git.alpinelinux.org/cgit/aports/tree/main/raspberrypi/APKBUILD\#n41
(from redmine: issue id 9400, created on 2018-09-10)