Files
OrcaSlicer/.github/workflows/build_check_cache.yml
Kris Austin 7eaff76cec build: use clang-cl for Windows CI builds (faster slicing and faster builds) (#15428)
* ci: build the Windows x64 dependencies and slicer with clang-cl

Passes -l -x from the Windows jobs, using the clang-cl and Ninja options
added in #15373. Ninja runs each dependency's build step as a plain command,
so the jobs set up a VC environment for OpenSSL's nmake. arm64 stays on MSVC
for now.

The deps cache key gains the compiler, so windows-x64 becomes
windows-x64-clang and windows-arm64 becomes windows-arm64-msvc.

* deps: select OpenSSL's ARM64 target from DEPS_ARCH

CMAKE_GENERATOR_PLATFORM is only set by -A, which Ninja never receives, so
the Ninja build selected the x64 target on ARM64. DEPS_ARCH is derived from
CMAKE_SYSTEM_PROCESSOR and is already independent of the generator.

* ci: build the Windows ARM64 dependencies and slicer with clang-cl

Three dependencies need handling first. libpng and OpenCV each build an ARM
SIMD path that does not compile with clang-cl, so those paths are off; PNG
already had the same opt-out for Apple ARM. OCCT is built with cl, since
clang-cl cannot emit one of its large generated files and there is no option
to turn that off. All three are gated to Windows ARM64 with clang.
2026-09-01 10:30:45 -03:00

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YAML

name: Check Cache
on:
workflow_call:
inputs:
os:
required: true
type: string
arch:
required: false
type: string
compiler:
required: false
type: string
default: msvc
build-deps-only:
required: false
type: boolean
force-build:
required: false
type: boolean
jobs:
check_cache: # determines if there is a cache and outputs variables used in caching process
name: Check Cache
runs-on: ${{ inputs.os }}
outputs:
cache-key: ${{ steps.set_outputs.outputs.cache-key }}
cache-path: ${{ steps.set_outputs.outputs.cache-path }}
valid-cache: ${{ steps.cache_deps.outputs.cache-hit }}
steps:
- name: Checkout
uses: actions/checkout@v7
with:
lfs: 'false'
- name: set outputs
id: set_outputs
env:
# Anything that changes how the tree is built belongs in the key, or a job
# restores one it cannot use. Linux amd64 passes no arch deliberately, so
# 'linux-clang' keeps the cache it already has.
cache-os: ${{ runner.os == 'macOS' && format('macos-{0}', inputs.arch) || (runner.os == 'Windows' && format('windows-{0}-{1}', inputs.arch, inputs.compiler) || format('linux-clang{0}', inputs.arch && format('-{0}', inputs.arch) || '')) }}
# ARM64 builds use the build-arm64 tree (see build_release_vs.bat); x64/other use build.
dep-folder-name: ${{ runner.os == 'macOS' && format('/{0}', inputs.arch) || (runner.os == 'Windows' && inputs.arch == 'arm64') && '-arm64/OrcaSlicer_dep' || '/OrcaSlicer_dep' }}
output-cmd: ${{ runner.os == 'Windows' && '$env:GITHUB_OUTPUT' || '"$GITHUB_OUTPUT"'}}
run: |
echo cache-key=${{ env.cache-os }}-cache-orcaslicer_deps-build-${{ hashFiles('deps/**') }} >> ${{ env.output-cmd }}
echo cache-path=${{ github.workspace }}/deps/build${{ env.dep-folder-name }} >> ${{ env.output-cmd }}
- name: load cache
id: cache_deps
uses: actions/cache@v6
with:
path: ${{ steps.set_outputs.outputs.cache-path }}
key: ${{ steps.set_outputs.outputs.cache-key }}
lookup-only: true
build_deps: # call next step
name: Build Deps
needs: [check_cache]
uses: ./.github/workflows/build_deps.yml
with:
cache-key: ${{ needs.check_cache.outputs.cache-key }}
cache-path: ${{ needs.check_cache.outputs.cache-path }}
valid-cache: ${{ needs.check_cache.outputs.valid-cache == 'true' }}
os: ${{ inputs.os }}
arch: ${{ inputs.arch }}
compiler: ${{ inputs.compiler }}
build-deps-only: ${{ inputs.build-deps-only }}
force-build: ${{ inputs.force-build }}
secrets: inherit