Convert paths to absolute in C# tasks instead of MSBuild targets

Co-authored-by: rolfbjarne <249268+rolfbjarne@users.noreply.github.com>

Author: Copilot

dotnet/targets/Microsoft.MaciOS.Sdk.Xcode.targets

@@ -13,7 +13,7 @@ This file contains MSBuild targets that support building Xcode framework project
   <UsingTask TaskName="Xamarin.MacDev.Tasks.CreateXcFramework"      AssemblyFile="$(_XamarinTaskAssembly)"/>
 
   <PropertyGroup>
-    <_XcodeProjectDefaultOutputPathRoot>$(IntermediateOutputPath)xcode/</_XcodeProjectDefaultOutputPathRoot>
+    <_XcodeProjectDefaultOutputPathRoot>$(MSBuildProjectDirectory)/$(IntermediateOutputPath)xcode/</_XcodeProjectDefaultOutputPathRoot>
     <_BuildXcodeProjectsStamp>$(_MaciOSStampDirectory)_BuildXcodeProjects.stamp</_BuildXcodeProjectsStamp>
   </PropertyGroup>
 

msbuild/Xamarin.MacDev.Tasks/Tasks/CreateXcArchive.cs

@@ -57,17 +57,17 @@ protected override IList<string> GenerateCommandLineCommands ()
 
 			if (!string.IsNullOrEmpty (OutputPath)) {
 				args.Add ("-archivePath");
-				args.Add (OutputPath);
+				args.Add (Path.GetFullPath (OutputPath));
 			}
 
 			if (!string.IsNullOrEmpty (DerivedDataPath)) {
 				args.Add ("-derivedDataPath");
-				args.Add (DerivedDataPath);
+				args.Add (Path.GetFullPath (DerivedDataPath));
 			}
 
 			if (!string.IsNullOrEmpty (PackageCachePath)) {
 				args.Add ("-packageCachePath");
-				args.Add (PackageCachePath);
+				args.Add (Path.GetFullPath (PackageCachePath));
 			}
 
 			args.AddRange (archive_args);

msbuild/Xamarin.MacDev.Tasks/Tasks/CreateXcFramework.cs

@@ -21,8 +21,9 @@ protected override IList<string> GenerateCommandLineCommands ()
 		{
 			var args = new List<string> ();
 
-			if (Directory.Exists (XcArchivePath)) {
-				foreach (var frameworkArchive in Directory.EnumerateDirectories (XcArchivePath, "*.xcarchive")) {
+			var fullXcArchivePath = Path.GetFullPath (XcArchivePath);
+			if (Directory.Exists (fullXcArchivePath)) {
+				foreach (var frameworkArchive in Directory.EnumerateDirectories (fullXcArchivePath, "*.xcarchive")) {
 					args.Add ("-archive");
 					args.Add (frameworkArchive);
 					args.Add ("-framework");
@@ -32,7 +33,7 @@ protected override IList<string> GenerateCommandLineCommands ()
 
 			if (!string.IsNullOrEmpty (OutputPath)) {
 				args.Add ("-output");
-				args.Add (OutputPath);
+				args.Add (Path.GetFullPath (OutputPath));
 			}
 
 			return args;