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Chris Tate 2ea62825cb feat: add mobile library targets for iOS and Android (#145)
* feat: add mobile library targets for iOS and Android

- three library-mode-only triples join SCRIPTC_TARGET:
  aarch64-apple-ios, aarch64-apple-ios-simulator (darwin hosts with
  Xcode's iPhoneOS/iPhoneSimulator SDKs), and aarch64-linux-android
  (any host with an NDK). The consuming pattern is an embedding app
  linking profile-configured static archives — Xcode on the Apple side,
  Gradle/NDK on the Android side — so the executable lane refuses the
  triples with SC3002 and the pointer to --lib
- zig bundles no Apple or bionic libc: resolveCc discovers the sysroot
  (xcrun for the selected Apple SDK; ANDROID_NDK_ROOT or the newest
  ndk/<version> under the SDK root) and spells it into targetArgs,
  where every cache tier already keys it. The canonical LLVM spellings
  map to zig's own with the minimum-version floors pinned:
  aarch64-ios.15.0[-simulator] stamps LC_BUILD_VERSION minos 15.0 into
  every object, aarch64-linux-android.26 pins the bionic stub level an
  embedder's minSdkVersion must meet. API 26 bionic carries everything
  the library-lane units call (arc4random_buf included), so no shim TU
  joins the archive
- localization follows the existing object-format rule: both iOS
  platforms ride the Mach-O host-ld64 arm (ld64 reads iOS objects and
  preserves platform/minos through the -r merge), Android rides the
  cross-ELF arm (zig relocatable merge + in-process demotion) via the
  driver's zig spelling. abi.instance_per_thread needed no per-target
  work — thread-local statics compile identically on all three
- admission is a pure env/host check ahead of toolchain discovery: an
  iOS triple off a darwin host and near-miss mobile spellings refuse
  SC3002 with the pairing or the supported set named, in compile() and
  compileLibrary() both, decorated by the profile teaching machinery
- library-multi grows the mobile lanes: M12 admission shape always
  runs; SCRIPTC_IOS=1 builds localized a/b archives per target and
  emission (M1 symbol exactness, ambient audit, version floor), links
  probes with the Xcode clang, and EXECUTES the two-instance and
  four-thread probes on a booted simulator byte-for-byte against the
  desktop expectations (device-arch archives are build+link verified);
  SCRIPTC_ANDROID=1 does the same through the NDK clang and an
  emulator, reusing a running device or writing and booting a headless
  arm64 AVD directly
- the surface manifest's coverage notes record the mobile posture (the
  library-admissible surface only; no mobile claim outside it), the
  profile spec and the platforms page carry the mobile matrix with the
  version floors, and non-mobile builds are unchanged byte-for-byte

* fix: harden mobile target tooling

* Harden mobile target test isolation
2026-08-13 09:48:09 -05:00
..
2026-07-22 18:08:04 -05:00