feat: add Windows ARM64 (Snapdragon X Elite) native build support#422
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abehrman wants to merge 8 commits into
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feat: add Windows ARM64 (Snapdragon X Elite) native build support#422abehrman wants to merge 8 commits into
abehrman wants to merge 8 commits into
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- Detect ARM64 in deps/CMakeLists.txt and deps-windows.cmake; set DEPS_ARCH=arm64 and DEP_PLATFORM=ARM64 / wxWidgets TARGET_CPU=ARM64 - OpenSSL: use VC-WIN64-ARM arch on ARM64 Windows - FindGLEW: prevent Win32 fallthrough on ARM64 - build_release_vs2022.bat: accept 'arm64' arg; pass -A ARM64 to cmake - Add SLIC3R_ENABLE_STEP option (default OFF on ARM64 Windows) to gate OpenCASCADE/STEP support; OCCT 7.6 has no Windows ARM64 support - Gate GMP/MPFR DLL copies and OCCT deps behind SLIC3R_ENABLE_STEP / ARM64 checks in CMakeLists.txt - Guard Format/STEP.hpp and its Model.hpp include with SLIC3R_ENABLE_STEP - CGAL.cmake: build without GMP/MPFR on ARM64 (CGAL_DISABLE_GMP=ON) - Add .github/workflows/build_windows_arm64.yml: native build on windows-11-arm runner; installs MSYS2 clangarm64 GMP/MPFR packages, generates MSVC-compatible import libs via llvm-dlltool, caches deps, uploads artifact Known limitations (follow-up work): - STEP import disabled (needs OCCT 7.7+ for ARM64) - Exact-arithmetic CGAL ops unavailable (MeshBoolean uses floating-point) - GMP/MPFR provided by CI MSYS2; local arm64 builds need manual setup Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Replace the broken llvm-dlltool/dumpbin PowerShell approach with MSYS2's native gendef + dlltool running in the CLANGARM64 shell. - gendef produces a proper .def from the mingw DLL - dlltool -m arm64 produces a COFF import .lib MSVC link.exe accepts - Use cygpath to convert $GITHUB_WORKSPACE instead of hardcoded path - Add mingw-w64-clang-aarch64-binutils to MSYS2 install (provides dlltool) Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
gendef is not in mingw-w64-clang-aarch64-binutils. Use objdump -p
(which IS in binutils) to parse PE DLL export tables instead:
objdump -p <dll> | awk '/^\[/{print $NF}' -> EXPORTS .def
dlltool -m arm64 -D <dll> -d <def> -l <lib>
No additional packages needed beyond binutils.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
CLANGARM64 is LLVM-based — GNU objdump/dlltool don't exist there.
Switch to LLVM equivalents that ship with the clang toolchain:
llvm-readobj --coff-exports <dll> | awk '/Name: /{print $2}'
llvm-dlltool -m arm64 -D <dll> -d <def> -l <lib>
Also drop the explicit binutils install (not needed, not GNU).
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
llvm-readobj/llvm-dlltool are not transitive deps of the GMP package. Add mingw-w64-clang-aarch64-llvm explicitly. Also add a diagnostic listing /clangarm64/bin/llvm-* so we can see what's actually available if future tool lookups fail. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
MPFR 4.x ships as libmpfr-6.dll in MSYS2 CLANGARM64 (soname bump),
not libmpfr-4.dll. Discover the actual filename with a glob, generate
the import lib for whatever is present, then copy to libmpfr-4.{dll,lib}
so cmake's win-arm64 blob lookup finds the expected names.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
…ect builds CMake 4.x dropped compatibility with cmake_minimum_required(VERSION < 3.5). Some bundled deps have old cmake minimums. Pass CMAKE_POLICY_VERSION_MINIMUM=3.5 via ExternalProject CMAKE_ARGS in Snapmaker_Orca_add_cmake_project (all three branches) and to the top-level deps configure in the ARM64 CI workflow. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
OpenEXR 2.5.5 cmake SSE2 detection succeeds on MSVC 14.44 ARM64 (emmintrin.h now lists ARM64 as supported) but IlmImf SIMD code fails to compile. Force all SSE/SIMD flags off on arm64: OPENEXR_IMF_HAVE_SSE2=OFF OPENEXR_IMF_HAVE_SSSE3=OFF ILMBASE_HAVE_SSE=OFF ILMBASE_FORCE_DISABLE_INTEL_SSE=ON Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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Summary
This PR adds native Windows ARM64 build support for Snapmaker OrcaSlicer, targeting Snapdragon X Elite and other Windows-on-ARM devices.
ARM64path alongside existingx64/x86VC-WIN64-ARMtarget on ARM64TARGET_CPU=ARM64andvc_arm64_liblib dirclangarm64packages in CI; MSVC-compatible import libs generated withllvm-dlltoolCGAL_DISABLE_GMP=ONon ARM64 (no prebuilt GMP needed)SLIC3R_ENABLE_STEPoption — OCCT 7.6 has no Windows ARM64 support; can be re-enabled when OCCT 7.7+ is adoptedbuild_release_vs2022.bat: acceptsarm64argument to pass-A ARM64to cmakebuild_windows_arm64.ymlworkflow running onwindows-11-armhosted runner, producing a downloadable native ARM64 artifactKnown limitations (follow-up work)
Test plan
windows-11-armrunner and artifact is producedLocal ARM64 build
Requires: MSYS2 with
mingw-w64-clang-aarch64-gmpandmingw-w64-clang-aarch64-mpfrpre-installed, andllvm-dlltoolon PATH (ships with VS 2022 ARM64 tools).🤖 Generated with Claude Code