Enables building and running Cemu natively on Windows on ARM (e.g.
Snapdragon devices) with clang-cl. The existing AArch64 recompiler
backend is used, so no x64 emulation is involved.
Build system (CMakeLists.txt, dependencies/ih264d, src/Cafe):
- Auto-select the arm64-windows-static vcpkg triplet and detect the
AArch64 architecture even when the emulated host shell misreports it.
- Disable IPO for clang-cl (LTO would force lld-link, which cannot read
vcpkg's MSVC /GL objects) and link clang_rt.builtins for the
compiler-rt calls (e.g. __udivti3) that lld-link does not add.
- Set the static CRT on the xbyak_aarch64 target.
- Locate pkgconf under the actual vcpkg host triplet instead of a
hardcoded x64-windows path.
- Build the bundled ih264d decoder as portable C on ARM64/Windows; its
NEON .s files use ELF-only :got: relocations that do not assemble for
COFF targets.
Source (precompiled.h, ExceptionHandler_win32, Debugger, LatteTextureCache):
- Guard x86-only intrinsics/paths behind ARCH_X86_64. clang-cl defines
_MSC_VER but not __GNUC__, so several `#if defined(_MSC_VER)` branches
wrongly selected x86 intrinsics on ARM64. Adds AArch64 register
dumping to the crash handler.
Manifest: use processorArchitecture="*" for Common-Controls so it
resolves on ARM64.
See BUILD.md for the build steps (Ninja + clang-cl + -DCMAKE_LINKER_TYPE=MSVC).
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
