From 2de7887402f6cf76c97e390aaf28a98020fe52d6 Mon Sep 17 00:00:00 2001
From: markhammond <749987+markhammond@users.noreply.github.com>
Date: Tue, 20 Oct 2026 11:19:38 +0800
Subject: [PATCH] build: Copy only the host platform's libtorch

Tests and samples now build for the machine that builds them, so
TorchSharp-cpu's native libraries arrive for that platform alone
rather than all six: about 250 MB a project instead of 1 GB. On a CI
runner every copy is real disk.

The output path stays bin/<Configuration>/net10.0. The packages in
src are untouched and stay portable; packed, they match 0.2.0.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
---
 Directory.Build.props | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/Directory.Build.props b/Directory.Build.props
index b23a8f8..df94f4a 100644
--- a/Directory.Build.props
+++ b/Directory.Build.props
@@ -37,6 +37,16 @@
         <IsPackable>false</IsPackable>
     </PropertyGroup>
 
+    <!-- Tests and samples run only on the machine that builds them, so they take the native
+         libtorch for that platform alone. TorchSharp-cpu brings six, about 1 GB a project
+         against 240 MB for one, and on a CI runner every copy is real disk. The output path
+         stays bin/<Configuration>/net10.0. The packages in src carry no natives and are
+         left portable. -->
+    <PropertyGroup Condition="$([MSBuild]::MakeRelative('$(MSBuildThisFileDirectory)', '$(MSBuildProjectDirectory)').StartsWith('tests')) or $([MSBuild]::MakeRelative('$(MSBuildThisFileDirectory)', '$(MSBuildProjectDirectory)').StartsWith('samples'))">
+        <UseCurrentRuntimeIdentifier>true</UseCurrentRuntimeIdentifier>
+        <AppendRuntimeIdentifierToOutputPath>false</AppendRuntimeIdentifierToOutputPath>
+    </PropertyGroup>
+
     <!-- Every package carries the licence and readme from the repository root, so the
          third-party notices travel with the binaries rather than living only here. -->
     <ItemGroup Condition="'$(IsPackable)' == 'true'">