[mono.proj] use all available cores for runtime build (#32566)

* [mono.proj] use all available cores for runtime build

* Update src/mono/mono.proj

Co-Authored-By: Alexander Köplinger <alex.koeplinger@outlook.com>
Co-authored-by: Alexander Köplinger <alex.koeplinger@outlook.com>

diff --git a/src/mono/mono.proj b/src/mono/mono.proj
index 14cdecb..e089c2d 100644 (file)
--- a/src/mono/mono.proj
+++ b/src/mono/mono.proj
@@ -65,7 +65,7 @@
   </Target>
 
   <Target Name="BuildMonoRuntimeUnix" Condition="'$(OS)' != 'Windows_NT'" DependsOnTargets="ConfigureMonoRuntimeUnix">
-    <Exec Command="make -j8" IgnoreStandardErrorWarningFormat="true" WorkingDirectory="$(MonoObjDir)" />
+    <Exec Command="make -j$([System.Environment]::ProcessorCount)" IgnoreStandardErrorWarningFormat="true" WorkingDirectory="$(MonoObjDir)" />
   </Target>
 
   <!-- Windows Mono runtime build -->