ci: Add LLVM/Clang 13.0 nightly CI jobs on Windows

Add jobs covering the `clang-cl` front-end with Ninja and NMake.
Add a job covering the `clang++` front-end with Ninja.

1 files changed, 37 insertions, 0 deletions

diff --git a/.gitlab/ci/clang.ps1 b/.gitlab/ci/clang.ps1
new file mode 100755
index 0000000..25d64ba
--- /dev/null
+++ b/.gitlab/ci/clang.ps1
@@ -0,0 +1,37 @@
+$erroractionpreference = "stop"
+
+if ("$env:CMAKE_CI_BUILD_NAME".Contains("clang13.0")) {
+    # LLVM/Clang 13.0
+    # https://github.com/llvm/llvm-project/releases/tag/llvmorg-13.0.0
+    $filename = "llvm-13.0.0-win-x86_64-1"
+    $sha256sum = "F1B7CE360DACBC9776D7F84BE714766D60CF3D47492AFE34C45D574D1C597264"
+} else {
+    throw ('unknown CMAKE_CI_BUILD_NAME: ' + "$env:CMAKE_CI_BUILD_NAME")
+}
+$tarball = "$filename.zip"
+
+$outdir = $pwd.Path
+$outdir = "$outdir\.gitlab"
+$ProgressPreference = 'SilentlyContinue'
+# This URL is only visible inside of Kitware's network.  See above filename table.
+Invoke-WebRequest -Uri "https://cmake.org/files/dependencies/internal/$tarball" -OutFile "$outdir\$tarball"
+$hash = Get-FileHash "$outdir\$tarball" -Algorithm SHA256
+if ($hash.Hash -ne $sha256sum) {
+    exit 1
+}
+
+Add-Type -AssemblyName System.IO.Compression.FileSystem
+[System.IO.Compression.ZipFile]::ExtractToDirectory("$outdir\$tarball", "$outdir")
+Move-Item -Path "$outdir\$filename" -Destination "$outdir\llvm"
+
+$bin = "$outdir\llvm\bin"
+$null = New-Item -ItemType HardLink -Path "$bin\clang++.exe"      -Target "$bin\clang.exe"
+$null = New-Item -ItemType HardLink -Path "$bin\clang-cl.exe"     -Target "$bin\clang.exe"
+$null = New-Item -ItemType HardLink -Path "$bin\clang-cpp.exe"    -Target "$bin\clang.exe"
+$null = New-Item -ItemType HardLink -Path "$bin\ld.lld.exe"       -Target "$bin\lld.exe"
+$null = New-Item -ItemType HardLink -Path "$bin\ld64.lld.exe"     -Target "$bin\lld.exe"
+$null = New-Item -ItemType HardLink -Path "$bin\lld-link.exe"     -Target "$bin\lld.exe"
+$null = New-Item -ItemType HardLink -Path "$bin\llvm-lib.exe"     -Target "$bin\llvm-ar.exe"
+$null = New-Item -ItemType HardLink -Path "$bin\llvm-ranlib.exe"  -Target "$bin\llvm-ar.exe"
+$null = New-Item -ItemType HardLink -Path "$bin\llvm-objcopy.exe" -Target "$bin\llvm-strip.exe"
+Clear-Variable -Name bin