workflows/release-binaries: Enable Windows x86 builds

.github/workflows/release-binaries-all.yml

@@ -88,10 +88,7 @@ jobs:
         # We use ubuntu-22.04 rather than the latest version to make the built
         # binaries more portable (eg functional aginast older glibc).
         runs-on:
-          - ubuntu-22.04
-          - ubuntu-22.04-arm
-          - macos-13
-          - macos-14
+          - windows-2022
 
     uses: ./.github/workflows/release-binaries.yml
     with:

.github/workflows/release-binaries.yml

@@ -23,6 +23,7 @@ on:
           - ubuntu-22.04-arm
           - macos-13
           - macos-14
+          - windows-2022
 
   workflow_call:
     inputs:
@@ -66,6 +67,8 @@ jobs:
       test-runs-on: ${{ steps.vars.outputs.build-runs-on }}
 
     steps:
+    - run: |
+        New-Item -Path "c:\actions-runner\llvm-project\llvm-project\build\tools\clang\tools\extra\clang-tidy\misc\ConfusableTable\CMakeFiles\clang-tidy-confusable-chars-gen.dir\C_\actions-runner\llvm-project\llvm-project\llvm" -ItemType Directory
     # It's good practice to use setup-python, but this is also required on macos-14
     # due to https://github.com/actions/runner-images/issues/10385
     - uses: actions/setup-python@39cd14951b08e74b54015e9e001cdefcf80e669f
@@ -89,6 +92,9 @@ jobs:
       run: |
         ./llvm/utils/release/./github-upload-release.py --token "$GITHUB_TOKEN" --user "$GITHUB_ACTOR" --user-token "$USER_TOKEN" check-permissions
 
+    - name: Check long paths
+      run: |
+        Get-ItemProperty -Path 'HKLM:\SYSTEM\CurrentControlSet\Control\FileSystem' -Name 'LongPathsEnabled'
     - name: Collect Variables
       id: vars
       shell: bash
@@ -118,9 +124,15 @@ jobs:
         echo "ref=$ref" >> $GITHUB_OUTPUT
         echo "upload=$upload" >> $GITHUB_OUTPUT
 
+        if [ "$RUNNER_OS" = "Windows" ]; then
+          release_binary_suffix="exe"
+        else
+          release_binary_suffix="tar.xz"
+        fi
+
         release_binary_basename="LLVM-$release_version-$RUNNER_OS-$RUNNER_ARCH"
         echo "release-binary-basename=$release_binary_basename" >> $GITHUB_OUTPUT
-        echo "release-binary-filename=$release_binary_basename.tar.xz" >> $GITHUB_OUTPUT
+        echo "release-binary-filename=$release_binary_basename.$release_binary_suffix" >> $GITHUB_OUTPUT
 
         target="$RUNNER_OS-$RUNNER_ARCH"
         # The hendrikmuhs/ccache-action action does not support installing sccache
@@ -151,15 +163,10 @@ jobs:
 
         build_flang="true"
 
-        if [ "$RUNNER_OS" = "Windows" ]; then
-          # The build times out on Windows, so we need to disable LTO.
-          target_cmake_flags="$target_cmake_flags -DLLVM_RELEASE_ENABLE_LTO=OFF"
-        fi
-
         echo "target-cmake-flags=$target_cmake_flags" >> $GITHUB_OUTPUT
         echo "build-flang=$build_flang" >> $GITHUB_OUTPUT
         case "${{ inputs.runs-on }}" in
-          ubuntu-22.04*)
+          ubuntu-22.04*|windows-2022)
             build_runs_on="depot-${{ inputs.runs-on }}-16"
             test_runs_on=$build_runs_on
             ;;
@@ -193,7 +200,9 @@ jobs:
     if: github.repository_owner == 'llvm'
     runs-on: ${{ needs.prepare.outputs.build-runs-on }}
     steps:
-
+    - name: Check long paths
+      run: |
+        Get-ItemProperty -Path 'HKLM:\SYSTEM\CurrentControlSet\Control\FileSystem' -Name 'LongPathsEnabled'
     - name: Checkout Actions
       uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11 # v4.1.1
       with:
@@ -241,14 +250,23 @@ jobs:
             ${{ needs.prepare.outputs.target-cmake-flags }} \
             -C clang/cmake/caches/Release.cmake \
             -DBOOTSTRAP_LLVM_PARALLEL_LINK_JOBS=1 \
+            -DCMAKE_OBJECT_PATH_MAX=450 \
             -DBOOTSTRAP_BOOTSTRAP_CPACK_PACKAGE_FILE_NAME="${{ needs.prepare.outputs.release-binary-basename }}"
 
-    - name: Build
+    - name: Build Unix
       shell: bash
+      if: runner.os != 'Windows'
       run: |
         ninja -v -C ${{ steps.setup-stage.outputs.build-prefix }}/build stage2-package
         release_dir=`find ${{ steps.setup-stage.outputs.build-prefix }}/build -iname 'stage2-bins'`
         mv $release_dir/${{ needs.prepare.outputs.release-binary-filename }} .
+
+    # There is an issue with building on Windows with bash so we use power shell.
+    # ninja: error: mkdir(tools/clang/tools/extra/clang-tidy/misc/ConfusableTable/CMakeFiles/clang-tidy-confusable-chars-gen.dir/C_/actions-runner/llvm-project/llvm-project/llvm): No such file or directory
+    - name: Build Windows
+      if: runner.os == 'Windows'
+      run: |
+        ninja -v -C build stage2-package
 
     - uses: actions/upload-artifact@26f96dfa697d77e81fd5907df203aa23a56210a8 #v4.3.0
       with:
@@ -270,6 +288,11 @@ jobs:
       with:
         build-prefix: ${{ steps.setup-stage.outputs.build-prefix }}
 
+    - name: Check Disk
+      if: always()
+      run: |
+        Get-WmiObject -Class Win32_LogicalDisk -ComputerName LOCALHOST | ? {$_. DriveType -eq 3} | select DeviceID, {$_.Size /1GB}, {$_.FreeSpace /1GB}
+
   upload-release-binaries:
     name: "Upload Release Binaries"
     needs:

clang/cmake/caches/Release.cmake

@@ -56,7 +56,7 @@ set(CLANG_ENABLE_BOOTSTRAP ON CACHE BOOL "")
 set(STAGE1_PROJECTS "clang")
 
 # Build all runtimes so we can statically link them into the stage2 compiler.
-set(STAGE1_RUNTIMES "compiler-rt;libcxx;libcxxabi;libunwind")
+set(STAGE1_RUNTIMES ${DEFAULT_RUNTIMES})
 
 if (LLVM_RELEASE_ENABLE_PGO)
   list(APPEND STAGE1_PROJECTS "lld")
@@ -140,7 +140,12 @@ set_final_stage_var(LLVM_ENABLE_PROJECTS "${LLVM_RELEASE_ENABLE_PROJECTS}" STRIN
 if (${CMAKE_HOST_SYSTEM_NAME} MATCHES "Linux")
   set_final_stage_var(CLANG_BOLT "INSTRUMENT" STRING)
 endif()
-set_final_stage_var(CPACK_GENERATOR "TXZ" STRING)
+# We want to generate an installer on Windows.
+if(NOT ${CMAKE_HOST_SYSTEM_NAME} MATCHES "Windows")
+  set_final_stage_var(CPACK_GENERATOR "TXZ" STRING)
+else()
+  set_final_stage_var(CMAKE_OBJECT_PATH_MAX "1024" STRING)
+endif()
 set_final_stage_var(CPACK_ARCHIVE_THREADS "0" STRING)
 
 set_final_stage_var(LLVM_USE_STATIC_ZSTD "ON" BOOL)