Disable/Enable the default Target.

ILRepack.Lib.MSBuild.Task/ILRepack.Lib.MSBuild.Task.csproj

@@ -18,6 +18,7 @@
         <None Include="build\ILRepack.Lib.MSBuild.Task.nuspec"/>
         <None Include="ILRepack.Config.props"/>
         <None Include="ILRepack.Lib.MSBuild.Task.snk"/>
+        <None Include="ILRepack.Lib.MSBuild.Task.props" CopyToOutputDirectory="PreserveNewest"/>
         <None Include="ILRepack.Lib.MSBuild.Task.targets" CopyToOutputDirectory="PreserveNewest"/>
     </ItemGroup>
 

ILRepack.Lib.MSBuild.Task/ILRepack.Lib.MSBuild.Task.props

@@ -0,0 +1,3 @@
+<Project>
+    <UsingTask AssemblyFile="$(MSBuildThisFileDirectory)ILRepack.Lib.MSBuild.Task.dll" TaskName="ILRepack"/>
+</Project>

ILRepack.Lib.MSBuild.Task/ILRepack.Lib.MSBuild.Task.targets

@@ -3,11 +3,14 @@
 
     <PropertyGroup>
         <ILRepackTargetsFile Condition="$(ILRepackTargetsFile) == ''">$(ProjectDir)ILRepack.targets</ILRepackTargetsFile>
+        <ILRepackEnabled Condition="'$(ILRepackEnabled)' == '' and $(Configuration.Contains('Release'))">true</ILRepackEnabled>
+        <ILRepackEnabled Condition="'$(ILRepackEnabled)' == ''">false</ILRepackEnabled>
+        <ILRepackEnabled Condition="Exists('$(ILRepackTargetsFile)')">false</ILRepackEnabled>
+        <ClearOutputDirectory Condition="'$(ClearOutputDirectory)' == ''">true</ClearOutputDirectory>
     </PropertyGroup>
 
-    <UsingTask AssemblyFile="$(MSBuildThisFileDirectory)ILRepack.Lib.MSBuild.Task.dll" TaskName="ILRepack"/>
     <Import Project="$(ILRepackTargetsFile)" Condition="Exists('$(ILRepackTargetsFile)')"/>
-    <Target Name="ILRepack" AfterTargets="Build" Condition="$(Configuration.Contains('Release')) and !Exists('$(ILRepackTargetsFile)')">
+    <Target Name="ILRepack" AfterTargets="Build" Condition="$(ILRepackEnabled)">
         <ItemGroup>
             <InputAssemblies Include="$(OutputPath)$(TargetName)$(TargetExt)"/>
             <InputAssemblies Include="$(OutputPath)*.dll" Exclude="$(OutputPath)$(TargetName)$(TargetExt)"/>
@@ -26,7 +29,7 @@
     <Target
             AfterTargets="ILRepack"
             Name="CleanReferenceCopyLocalPaths"
-            Condition="$(Configuration.Contains('Release')) and !Exists('$(ILRepackTargetsFile)') and '$(ClearOutputDirectory)' != 'False'">
+            Condition="$(ILRepackEnabled) and $(ClearOutputDirectory)">
         <Delete Files="@(ReferenceCopyLocalPaths->'$(OutDir)%(DestinationSubDirectory)%(Filename)%(Extension)')"/>
         <ItemGroup>
             <Directories Include="$([System.IO.Directory]::GetDirectories('$(OutDir)%(DestinationSubDirectory)', '*', System.IO.SearchOption.AllDirectories))"/>

ILRepack.Lib.MSBuild.Task/ILRepack.cs

@@ -19,6 +19,7 @@ public class ILRepack : Microsoft.Build.Utilities.Task, IDisposable
         private string _keyContainer;
         private ILRepacking.ILRepack.Kind _targetKind;
         private string _excludeFileTmpPath;
+        private MessageImportance _messageImportance = MessageImportance.High; 
 
         #endregion
 
@@ -51,6 +52,14 @@ public virtual string LogFile
             set => _logFile = BuildPath(ConvertEmptyToNull(value));
         }
 
+        /// <summary>
+        ///     Specifies the log task messages importance (High by default).
+        /// </summary>
+        public virtual string LogImportance { 
+            get => _messageImportance.ToString();
+            set => Enum.TryParse(value, true, out _messageImportance); 
+        }
+
         /// <summary>
         ///     Merges types with identical names into one.
         /// </summary>
@@ -300,7 +309,7 @@ public override bool Execute()
                         throw new Exception($"Unable to resolve assembly '{assemblies[i]}'");
                     }
 
-                    Log.LogMessage(MessageImportance.High, "Added assembly '{0}'", assemblies[i]);
+                    LogMessage("Added assembly '{0}'", assemblies[i]);
                 }
 
                 // List of regex to compare against FullName of types NOT to internalize
@@ -318,7 +327,7 @@ public override bool Execute()
                                     $"Invalid internalize exclude pattern at item index {i}. Pattern cannot be blank.");
                             }
 
-                            Log.LogMessage(MessageImportance.High,
+                            LogMessage(
                                 "Excluding namespaces/types matching pattern '{0}' from being internalized",
                                 internalizeExclude[i]);
                         }
@@ -348,7 +357,7 @@ public override bool Execute()
                 repackOptions.SearchDirectories = searchPath.ToArray();
 
                 // Attempt to merge assemblies.
-                Log.LogMessage(MessageImportance.High, "Merging {0} assembl{1} to '{2}'",
+                LogMessage("Merging {0} assembl{1} to '{2}'",
                     InputAssemblies.Length, InputAssemblies.Length != 1 ? "ies" : "y", _outputFile);
 
                 // Measure performance
@@ -365,7 +374,7 @@ public override bool Execute()
 
                 stopWatch.Stop();
 
-                Log.LogMessage(MessageImportance.High, "Merge succeeded in {0} s", stopWatch.Elapsed.TotalSeconds);
+                LogMessage("Merge succeeded in {0} s", stopWatch.Elapsed.TotalSeconds);
                 logger.Close();
 
                 return true;
@@ -379,9 +388,15 @@ public override bool Execute()
             }
         }
 
-        #endregion
-
-        #region Private methods
+        /// <summary>
+        /// Logs a message with the specified format and arguments.
+        /// </summary>
+        /// <param name="message">The message format.</param>
+        /// <param name="messageArgs">The arguments for the message format.</param>
+        private void LogMessage(string message, params object[] messageArgs)
+        {
+            Log.LogMessage(_messageImportance, message, messageArgs);
+        }
 
         /// <summary>
         ///     Parses the command line options for AllowedDuplicateNameSpaces.

ILRepack.Lib.MSBuild.Task/build/ILRepack.Lib.MSBuild.Task.nuspec

@@ -19,6 +19,7 @@
     </metadata>
     <files>
         <file src="ILRepack.Lib.MSBuild.Task.dll" target="build"/>
+        <file src="ILRepack.Lib.MSBuild.Task.props" target="build"/>
         <file src="ILRepack.Lib.MSBuild.Task.targets" target="build"/>
     </files>
 </package>

README.md

@@ -80,13 +80,22 @@ option only applies if you are using default targets file provided in NuGet pack
 <KeyFile>$(ProjectDir)ILRepack.snk</KeyFile>
 ```
 
+### Disable default ILRepack Target
+
+By default if no "ILRepack.targets" file is found a default ILRepack Target runs after build if the configuration contains "Release".
+You can disable this behavior by setting the following property to `false` or `true` to enable it.
+
+```xml
+<ILRepackEnabled>false</ILRepackEnabled>
+```
+
 ### Specify whether to clear directory after merging
 
 If you are using default targets file then you may notice that it clears Output directory after merging dependencies.
 You can turn this functionality off by setting ClearOutputDirectory to False as shown below.
 
 ```xml
-<ClearOutputDirectory>False</ClearOutputDirectory>
+<ClearOutputDirectory>false</ClearOutputDirectory>
 ```
 
 ## Task options
@@ -109,6 +118,7 @@ You can turn this functionality off by setting ClearOutputDirectory to False as
 | KeyFile                        | Specifies a key file to sign the output assembly.                                                                                                          |
 | LibraryPath                    | List of paths to use as "include directories" when attempting to merge assemblies.                                                                         |
 | LogFile                        | Specifies a log file to output log information.                                                                                                            |
+| LogImportance                  | Specifies the log message importance in the task. (`high` by default, `normal` and `low` available)                                                        | 
 | MergeIlLinkerFiles             | Merge IL Linker file XML resources from Microsoft assemblies (optional). Same-named XML resources ('ILLink.*.xml') will be combined during merging.        |
 | NoRepackRes                    | Does not add the embedded resource 'ILRepack.List' with all merged assembly names.                                                                         |
 | OutputFile                     | Output name for the merged assembly.                                                                                                                       |