[libc] make the scudo integration test run

adds a custom command for libc-scudo-integration-test that makes it run
when it is built.

Reviewed By: sivachandra

Differential Revision: https://reviews.llvm.org/D108409

GitOrigin-RevId: 6ce6fa4ad430b6045e07bc6191da7bcae2697f17
diff --git a/test/integration/scudo/CMakeLists.txt b/test/integration/scudo/CMakeLists.txt
index 35e3a78..045dc9a 100644
--- a/test/integration/scudo/CMakeLists.txt
+++ b/test/integration/scudo/CMakeLists.txt
@@ -37,3 +37,9 @@
   PRIVATE
   llvmlibc
 )
+
+add_custom_command(TARGET libc-scudo-integration-test
+                   POST_BUILD
+                   COMMAND $<TARGET_FILE:libc-scudo-integration-test>
+                   COMMENT "Run the test after it is built." 
+                   VERBATIM)