git clone aports to harddisk, modified i586-linux-musl triplet in function.sh to i486 and run ./bootstrap.sh x86, stopped at building apk-tools.
log as follows:
>>> bootstrap-x86: Building cross-compiler
>>> binutils-x86: Package is up to date
>>> libucontext: Package is up to date
>>> gcc-x86: Package is up to date
>>> build-base-x86: Package is up to date
>>> bootstrap-x86: Cross building base system
>>> fortify-headers: Package is up to date
>>> linux-headers: Package is up to date
>>> musl: Package is up to date
>>> zlib: Package is up to date
>>> pkgconf: Package is up to date
>>> gmp: Package is up to date
>>> mpfr4: Package is up to date
>>> mpc1: Package is up to date
>>> isl26: Package is up to date
>>> libucontext: Package is up to date
>>> zstd: Package is up to date
>>> binutils: Package is up to date
>>> gcc: Package is up to date
>>> make: Package is up to date
>>> file: Package is up to date
>>> patch: Package is up to date
>>> openssl: Package is up to date
>>> busybox: Package is up to date
>>> build-base: Package is up to date
>>> ca-certificates: Package is up to date
>>> libmd: Package is up to date
>>> bsd-compat-headers: Package is up to date
>>> libbsd: Package is up to date
>>> apk-tools: Building main/apk-tools 3.0.3-r1 (using abuild 3.16.0-r0) started Fri, 26 Dec 2025 17:42:18 +0800
>>> apk-tools: Validating /home/allan/aports/main/apk-tools/APKBUILD...
>>> apk-tools: Analyzing dependencies...
ERROR: unable to select packages:
  .makedepends-apk-tools-20251226.094219:
    masked in: cache
    satisfies: world[.makedepends-apk-tools=20251226.094219]
  lua5.5 (no such package):
    required by: .makedepends-apk-tools-20251226.094219[lua5.5]
  lua5.5-lzlib (no such package):
    required by: .makedepends-apk-tools-20251226.094219[lua5.5-lzlib]
>>> ERROR: apk-tools: builddeps failed
>>> apk-tools: Uninstalling dependencies...
ERROR: No such package: .makedepends-apk-tools
ERROR: No such package: .hostdepends-apk-tools