Directory.Build.targets

<Project>

  <!-- Derive the assembly version from the nearest git release tag so the About
       screen shows the actual build (e.g. "0.1.9-rc1-23-g13a9f8b") instead of the
       default 1.0.0.0. Runs once per project before assembly-info generation.
       Best-effort: if git is missing or the tree has no tags, the static
       <Version> fallback from Directory.Build.props stands. -->
  <Target Name="SetVersionFromGit"
          BeforeTargets="GetAssemblyVersion;GenerateAssemblyInfo;CoreCompile"
          Condition="'$(OpenIpcVersionResolved)' != 'true'">

    <Exec Command="git describe --tags --always --dirty"
          WorkingDirectory="$(MSBuildThisFileDirectory)"
          ConsoleToMSBuild="true"
          StandardOutputImportance="Low"
          ContinueOnError="true">
      <Output TaskParameter="ConsoleOutput" PropertyName="_GitDescribe" />
      <Output TaskParameter="ExitCode" PropertyName="_GitExit" />
    </Exec>

    <PropertyGroup Condition="'$(_GitExit)' == '0' and '$(_GitDescribe)' != ''">
      <!-- Drop the leading "v" so "v0.1.9-rc1" → "0.1.9-rc1...". -->
      <InformationalVersion>$(_GitDescribe.TrimStart('v'))</InformationalVersion>
      <!-- Numeric core (X.Y.Z) for AssemblyVersion/FileVersion, which reject
           pre-release/metadata suffixes. -->
      <_GitNumeric>$([System.Text.RegularExpressions.Regex]::Match($(_GitDescribe), '[0-9]+\.[0-9]+\.[0-9]+').Value)</_GitNumeric>
    </PropertyGroup>

    <PropertyGroup Condition="'$(_GitNumeric)' != ''">
      <Version>$(_GitNumeric)</Version>
      <FileVersion>$(_GitNumeric).0</FileVersion>
      <AssemblyVersion>$(_GitNumeric).0</AssemblyVersion>
    </PropertyGroup>

    <PropertyGroup>
      <OpenIpcVersionResolved>true</OpenIpcVersionResolved>
    </PropertyGroup>
  </Target>

</Project>