Setup initial workflow for building on Windows. (#73)

Progress on #36.

This adds a new workflow, triggered as part of ci.yml, that configures
and builds a subset of the project.

Future changes will:

* Switch to a more powerful self-hosted runner instead of using standard
GitHub-hosted runners (we have some runners but they need some
configuration to be able to run the `repo` tool without `SSL:
CERTIFICATE_VERIFY_FAILED` errors)
* Build more subprojects (this will patches or upstream changes to each
subproject to improve portability)

.github/workflows/build_windows_packages.yml

@@ -0,0 +1,78 @@
+name: Build Windows Packages
+
+on:
+  workflow_dispatch:
+    inputs:
+      package_version:
+        type: string
+        default: ADHOCBUILD
+
+  workflow_call:
+    inputs:
+      package_version:
+        type: string
+        default: ADHOCBUILD
+
+jobs:
+  build_windows_packages:
+    name: Build Windows Packages
+    runs-on: windows-2022  # TODO(#36): move to cluster of CPU builders like `azure-windows-scale-nod-ai`
+    defaults:
+      run:
+        shell: bash
+    strategy:
+      fail-fast: true
+    steps:
+      - name: Enabling git symlinks
+        run: git config --global core.symlinks true
+      - name: "Checking out repository"
+        uses: actions/checkout@8f4b7f84864484a7bf31766abe9204da3cbe65b3 # v3.5.0
+      - uses: actions/setup-python@0b93645e9fea7318ecaed2b359559ac225c90a2b # v5.3.0
+        with:
+          python-version: "3.12"
+
+      - name: Install ninja
+        run: choco install ninja --yes
+
+      - name: Fetch sources
+        run: |
+          git config --global user.email "[email protected]"
+          git config --global user.name "Nobody"
+          python ./build_tools/fetch_sources.py --depth 1
+      # TODO(scotttodd): Get symlinks working on CI runners instead of this
+      - name: Replace symlinks with copies
+        run: ./build_tools/patch_symlinks_for_windows_ci.sh
+
+      - name: Configure MSVC
+        uses: ilammy/msvc-dev-cmd@0b201ec74fa43914dc39ae48a89fd1d8cb592756 # v1.13.0
+
+      # TODO: We shouldn't be using a cache on actual release branches, but it
+      # really helps for iteration time.
+      - name: Setup ccache
+        uses: hendrikmuhs/ccache-action@53911442209d5c18de8a31615e0923161e435875 # v1.2.16
+        with:
+          key: windows-build-packages-v1
+
+      - name: Configure Projects
+        run: |
+          # Generate a new build id.
+          package_version="${{ inputs.package_version }}"
+          echo "Building package ${package_version}"
+
+          # Build.
+          cmake -B build -GNinja . \
+            -DCMAKE_C_COMPILER_LAUNCHER=ccache -DCMAKE_CXX_COMPILER_LAUNCHER=ccache \
+            -DTHEROCK_AMDGPU_FAMILIES=gfx110X-dgpu \
+            -DTHEROCK_PACKAGE_VERSION="${package_version}" \
+            -DTHEROCK_ENABLE_CORE=OFF \
+            -DTHEROCK_ENABLE_COMM_LIBS=OFF \
+            -DTHEROCK_ENABLE_MATH_LIBS=OFF \
+            -DTHEROCK_ENABLE_ML_LIBS=OFF
+
+      - name: Build Projects
+        run: cmake --build build
+
+      - name: Report
+        if: ${{ !cancelled() }}
+        run: |
+          ls -lh build

.github/workflows/ci.yml

@@ -21,6 +21,10 @@ jobs:
     name: Build Linux Packages
     uses: ./.github/workflows/build_linux_packages.yml
 
+  build_windows_packages:
+    name: Build Windows Packages
+    uses: ./.github/workflows/build_windows_packages.yml
+
   # build_python_packages:
   #   name: Build Python Packages
   #   uses: ./.github/workflows/build_python_packages.yml

build_tools/patch_symlinks_for_windows_ci.sh

@@ -0,0 +1,25 @@
+#!/bin/bash
+# Replaces symlinks for source folders with direct copies of files.
+# This helps set up files for Windows CI runners that do not have symlinks
+# fully configured. This should usually *NOT* be run on development machines
+# since it makes destructive changes.
+
+this_dir="$(cd $(dirname $0) && pwd)"
+root_dir="$(cd $this_dir/.. && pwd)"
+
+cd ${root_dir}
+
+# Remove the original symlinks.
+rm base/half
+rm base/rocm-cmake
+rm base/rocm-core
+
+# Delete .git folders which are symlinks too. CI doesn't need them.
+rm -rf sources/half/.git
+rm -rf sources/rocm-cmake/.git
+rm -rf sources/rocm-core/.git
+
+# Copy from sources/ to where the symlinks were.
+cp -r sources/half base
+cp -r sources/rocm-cmake base
+cp -r sources/rocm-core base

docs/development/windows_support.md

@@ -135,5 +135,4 @@ Ensure that MSVC is used by looking for lines like these in the logs:
 cmake --build build
 ```
 
-At the moment this should build some dependencies like eigen and boost, as well
-as some projects in [`base/`](../../base/).
+At the moment this should build some projects in [`base/`](../../base/).