From 5ccdd5408afee846e2c3f7dc7f7359a8821faba8 Mon Sep 17 00:00:00 2001
From: Egor Tensin <egor@tensin.name>
Date: Tue, 7 Apr 2026 12:09:22 +0200
Subject: install LLD as well

---
 .github/actions/check-lld/action.yml | 41 ++++++++++++++++++++++++++++++++++++
 .github/workflows/test.yml           |  6 ++++++
 README.md                            |  1 +
 action.yml                           |  7 +++++-
 4 files changed, 54 insertions(+), 1 deletion(-)
 create mode 100644 .github/actions/check-lld/action.yml

diff --git a/.github/actions/check-lld/action.yml b/.github/actions/check-lld/action.yml
new file mode 100644
index 0000000..5bb25b6
--- /dev/null
+++ b/.github/actions/check-lld/action.yml
@@ -0,0 +1,41 @@
+name: Check LLD
+description: Check LLD
+inputs:
+  version:
+    description: Specific version to check
+    required: false
+runs:
+  using: composite
+  steps:
+    - run: |
+        function Check-Exe {
+            param(
+                [Parameter(Mandatory=$true)]
+                [string] $Exe,
+                [Parameter(Mandatory=$true)]
+                [string] $HelpString
+            )
+
+            echo (Get-Command $Exe).Path
+            $output = & $Exe --version 2>&1
+            echo $output
+
+            $($output | Select-String -Pattern $HelpString -SimpleMatch -Quiet) -or $(throw "Unexpected `$Exe --version` output")
+        }
+
+        $version = '${{ inputs.version }}'
+
+        $driver_exe = 'lld'
+        # Although the output of `lld --version` claims that it's ld-link on
+        # Windows, the Chocolatey version at least still uses ld.lld as on
+        # Linux.
+        $real_exe = 'ld.lld'
+
+        if ($version) {
+            $driver_exe = "$driver_exe-$version"
+            $real_exe = "$real_exe-$version"
+        }
+
+        Check-Exe $driver_exe 'lld is a generic driver'
+        Check-Exe $real_exe "LLD $version"
+      shell: pwsh
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index d70af44..90b254c 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -32,6 +32,8 @@ jobs:
         uses: ./.github/actions/run-foo
       - name: Check symlinks
         uses: ./.github/actions/check-cc
+      - name: Check lld
+        uses: ./.github/actions/check-lld
 
   versions:
     strategy:
@@ -64,3 +66,7 @@ jobs:
         uses: ./.github/actions/check-cc
         with:
           version: '${{ matrix.version }}'
+      - name: Check lld
+        uses: ./.github/actions/check-lld
+        with:
+          version: '${{ matrix.version }}'
diff --git a/README.md b/README.md
index 56a5e34..8f5e57e 100644
--- a/README.md
+++ b/README.md
@@ -39,6 +39,7 @@ API
 | ------- | --------- | -----------
 | clang   | clang-4.0 | `clang` binary name
 | clangxx | clang++-7 | `clang++` binary name
+| lld     | ld.lld-10 | `ld.lld` binary name
 
 Supported versions
 ------------------
diff --git a/action.yml b/action.yml
index db008dd..cb35e52 100644
--- a/action.yml
+++ b/action.yml
@@ -107,6 +107,7 @@ runs:
 
         $clang = 'clang'
         $clangxx = 'clang++'
+        $lld = 'ld.lld'
 
         if ($linux_host) {
             $pkg_clang = 'clang'
@@ -114,6 +115,7 @@ runs:
             $pkg_clang_tidy = 'clang-tidy'
             $pkg_llvm = 'llvm'
             $pkg_gxx = 'g++'
+            $pkg_lld = 'lld'
 
             if (!$latest) {
                 $pkg_version = Format-UpstreamVersion $version
@@ -123,14 +125,16 @@ runs:
                 $pkg_clang_format = "$pkg_clang_format-$pkg_version"
                 $pkg_clang = "$pkg_clang_tidy-$pkg_version"
                 $pkg_llvm = "$pkg_llvm-$pkg_version"
+                $pkg_lld = "$pkg_lld-$pkg_version"
 
                 $clang = "$clang-$pkg_version"
                 $clangxx = "$clangxx-$pkg_version"
+                $lld = "$lld-$pkg_version"
             }
             if (!$x64) {
                 $pkg_gxx = 'g++-multilib'
             }
-            $packages = $pkg_clang,$pkg_clang_format,$pkg_clang_tidy,$pkg_llvm,$pkg_gxx
+            $packages = $pkg_clang,$pkg_clang_format,$pkg_clang_tidy,$pkg_llvm,$pkg_gxx,$pkg_lld
 
             Install-Package $packages
         } elseif ($windows_host) {
@@ -144,6 +148,7 @@ runs:
 
         echo "clang=$clang"     >> $env:GITHUB_OUTPUT
         echo "clangxx=$clangxx" >> $env:GITHUB_OUTPUT
+        echo "lld=$lld"         >> $env:GITHUB_OUTPUT
       shell: pwsh
 
     - run: |
-- 
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