Same string as the kernel commit, for the three compiled aports this image
builds itself: -march=armv8.6-a+fp16fml+aes+sha3+sm4 -mtune=cortex-a720
appended to CFLAGS (and CXXFLAGS for libcamera). abuild builds these with
Alpine's GCC; the string is gcc's own -march=native expansion on the phone
re-based on armv8.6-a, and it assembles on GCC 15 with binutils 2.45.1 and
on GCC 16 (whose -mcpu=cortex-a720 expansion binutils 2.45 rejects). On the
phone itself gcc -flto, g++ and clang all compile, link and run it.
The base stops at 8.6 on purpose: this phone exposes neither SVE nor MTE
(userspace autovectorised for SVE2 would SIGILL), and not WFxT either.
pkgrel bumps so apk upgrade delivers the rebuilt binaries.
Jorijn van der Graaf
cb089bcad1