Locates the dumpbin.exe without adding to PATH

action.yml

@@ -18,4 +18,4 @@ runs:
     - name: Collect dependencies
       shell: powershell
       run: |
-        "${{ github.action_path }}\collect.ps1" -Executable "${{ inputs.executable }}" -Output "${{ inputs.output }}"
+        & "${{ github.action_path }}\collect.ps1" -Executable "${{ inputs.executable }}" -Output "${{ inputs.output }}"

collect.ps1

@@ -14,6 +14,42 @@ if (-not (Test-Path $Executable)) {
 
 New-Item -ItemType Directory -Force -Path $Output | Out-Null
 
+$vswherePath = "${env:ProgramFiles(x86)}\Microsoft Visual Studio\Installer\vswhere.exe"
+
+if (-not (Test-Path $vswherePath)) {
+    throw "Could not locate vswhere.exe. Verify that Visual Studio or Visual Studio Build Tools is installed."
+}
+
+$visualStudioPath = & $vswherePath `
+    -latest `
+    -products * `
+    -requires Microsoft.VisualStudio.Component.VC.Tools.x86.x64 `
+    -property installationPath
+
+if (-not $visualStudioPath) {
+    throw "Could not locate a Visual Studio installation with the MSVC C++ tools installed."
+}
+
+$toolsetVersionPath = Join-Path `
+    $visualStudioPath `
+    "VC\Auxiliary\Build\Microsoft.VCToolsVersion.default.txt"
+
+if (-not (Test-Path $toolsetVersionPath)) {
+    throw "Could not locate the MSVC toolset version file."
+}
+
+$toolsetVersion = (Get-Content $toolsetVersionPath -Raw).Trim()
+
+$dumpbinPath = Join-Path `
+    $visualStudioPath `
+    "VC\Tools\MSVC\$toolsetVersion\bin\Hostx64\x64\dumpbin.exe"
+
+if (-not (Test-Path $dumpbinPath)) {
+    throw "Could not locate dumpbin.exe at: $dumpbinPath"
+}
+
+Write-Host "Using dumpbin: $dumpbinPath"
+
 $windowsDirectories = @(
     $env:WINDIR,
     (Join-Path $env:WINDIR "System32"),
@@ -66,13 +102,12 @@ function Copy-Dependencies {
 
     $binaryDirectory = Split-Path -Parent $Binary
 
-    $dependencies = dumpbin /DEPENDENTS $Binary |
+    $dependencies = & $dumpbinPath /DEPENDENTS $Binary |
         Select-String '^\s+.*\.dll$' |
         ForEach-Object { $_.Line.Trim() } |
         Sort-Object -Unique
 
     foreach ($dll in $dependencies) {
-
         $key = $dll.ToLowerInvariant()
 
         if ($processed.ContainsKey($key)) {