Install LLVM on Windows

images/win/Windows2016-Azure.json

@@ -456,6 +456,12 @@
                 "{{ template_dir }}/scripts/Installers/Install-MinGW.ps1"
             ]
         },
+        {
+            "type": "powershell",
+            "scripts":[
+                "{{ template_dir }}/scripts/Installers/Install-Clang.ps1"
+            ]
+        },
         {
             "type": "powershell",
             "scripts":[
@@ -715,6 +721,12 @@
                 "{{ template_dir }}/scripts/Installers/Validate-MinGW.ps1"
             ]
         },
+        {
+            "type": "powershell",
+            "scripts":[
+                "{{ template_dir }}/scripts/Installers/Validate-Clang.ps1"
+            ]
+        },
         {
             "type": "powershell",
             "scripts":[

images/win/Windows2019-Azure.json

@@ -425,6 +425,12 @@
                 "{{ template_dir }}/scripts/Installers/Install-MinGW.ps1"
             ]
         },
+        {
+            "type": "powershell",
+            "scripts":[
+                "{{ template_dir }}/scripts/Installers/Install-Clang.ps1"
+            ]
+        },
         {
             "type": "powershell",
             "scripts":[
@@ -684,6 +690,12 @@
                 "{{ template_dir }}/scripts/Installers/Validate-MinGW.ps1"
             ]
         },
+        {
+            "type": "powershell",
+            "scripts":[
+                "{{ template_dir }}/scripts/Installers/Validate-Clang.ps1"
+            ]
+        },
         {
             "type": "powershell",
             "scripts":[

images/win/scripts/Installers/Install-Clang.ps1

@@ -0,0 +1,6 @@
+################################################################################
+##  File:  Install-Clang.ps1
+##  Desc:  Install Clang compiler as a part of LLVM framework for Windows
+################################################################################
+
+choco install -y llvm

images/win/scripts/Installers/Validate-Clang.ps1

@@ -0,0 +1,46 @@
+################################################################################
+##  File:  Validate-Clang.ps1
+##  Desc:  Validate Clang installation
+################################################################################
+
+if (Get-Command -Name 'clang')
+{
+    Write-Host "clang is successfully installed:"
+    clang --version | Write-Host
+}
+else
+{
+    Write-Host "clang is not on PATH"
+    exit 1
+}
+
+if (Get-Command -Name 'clang++')
+{
+    Write-Host "clang++ is successfully installed:"
+    clang++ --version | Write-Host
+}
+else
+{
+    Write-Host "clang++ is not on PATH"
+    exit 1
+}
+
+# Adding description of the software to Markdown
+
+# `clang --version` gives output like:
+# clang version 9.0.0 (tags/RELEASE_900/final)
+# Target: x86_64-pc-windows-msvc
+# Thread model: posix
+# InstalledDir: C:\Program Files\LLVM\bin
+
+$SoftwareName = "Clang"
+$(clang --version).Split([System.Environment]::NewLine)[0] -match "\d\.\d\.\d"
+$Version = $matches[0]
+
+$Description = @"
+_Version:_ $Version<br/>
+_Environment:_
+* PATH: contains location of the LLVM 'bin' directory
+"@
+
+Add-SoftwareDetailsToMarkdown -SoftwareName $SoftwareName -DescriptionMarkdown $Description