Enable commit-based package versioning

CommandLine/CommandLine-netcore.csproj

@@ -6,5 +6,6 @@
     <AssemblyOriginatorKeyFile>../tools/Key.snk</AssemblyOriginatorKeyFile>
     <SignAssembly>true</SignAssembly>
     <PublicSign>true</PublicSign>
+    <Version>1.0.0-alpha-$(CommitCount)</Version>
   </PropertyGroup>
 </Project>

Directory.Build.props

@@ -0,0 +1,7 @@
+<Project ToolsVersion="15.0">
+    <Import Condition="Exists('obj/CommitCount.props')"
+            Project="obj/CommitCount.props" />
+    <PropertyGroup>
+        <CommitCount Condition="'$(CommitCount)' == ''">0</CommitCount>
+    </PropertyGroup>
+</Project>

build.proj

@@ -8,4 +8,27 @@
   <Target Name="DoPublish">
     <Exec Command="dotnet pack CommandLine/CommandLine-netcore.csproj --no-build" />
   </Target>
+
+  <Target Name="MakeVersionProps">
+    <MakeDir Condition="!Exists('obj')"
+             Directories="obj" />
+    <Exec Command="git rev-list --count HEAD" 
+          ConsoleToMSBuild="true">
+      <Output TaskParameter="ConsoleOutput" PropertyName="CommitCount" />
+    </Exec>
+
+    <PropertyGroup>
+      <GitCommitInfoPropsContent>
+&lt;Project ToolsVersion=&quot;15.0&quot;&gt;
+    &lt;PropertyGroup&gt;
+        &lt;CommitCount&gt;$(CommitCount)&lt;/CommitCount&gt;
+    &lt;/PropertyGroup&gt;
+&lt;/Project&gt;
+      </GitCommitInfoPropsContent>
+    </PropertyGroup>
+
+    <WriteLinesToFile File="obj/CommitCount.props"
+                      Lines="$(GitCommitInfoPropsContent)"
+                      Overwrite="true" />
+  </Target>
 </Project>

build.ps1

@@ -24,4 +24,5 @@ Invoke-WebRequest -Uri "https://raw.githubusercontent.com/dotnet/cli/rel/1.0.0/s
 
 $env:PATH="$DOTNET_INSTALL_DIR;$env:PATH"
 
+& dotnet msbuild build.proj /t:MakeVersionProps
 & dotnet msbuild build.proj /v:diag /fl /flp:v=diag $ExtraParameters

build.sh

@@ -40,4 +40,5 @@ curl -sSL https://raw.githubusercontent.com/dotnet/cli/rel/1.0.0/scripts/obtain/
 
 PATH="$DOTNET_INSTALL_DIR:$PATH"
 
+dotnet msbuild build.proj /t:MakeVersionProps
 dotnet msbuild build.proj /v:diag /fl /flp:v=diag "${args[@]}"