From b45ad730f91226c309910aa5314ee7e37b71d43f Mon Sep 17 00:00:00 2001
From: Owen Voorhees <ovoorhees@apple.com>
Date: Sun, 19 Oct 2025 23:04:19 -0700
Subject: [PATCH] Set interface include directory for the subprocess target

---
 cmake/modules/EmitSwiftInterface.cmake | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/cmake/modules/EmitSwiftInterface.cmake b/cmake/modules/EmitSwiftInterface.cmake
index b661ded..c6dc233 100644
--- a/cmake/modules/EmitSwiftInterface.cmake
+++ b/cmake/modules/EmitSwiftInterface.cmake
@@ -38,6 +38,9 @@ function(emit_swift_interface target)
   target_sources(${target}
     INTERFACE
       $<BUILD_INTERFACE:${CMAKE_CURRENT_BINARY_DIR}/${module_name}.swiftmodule/${${PROJECT_NAME}_MODULE_TRIPLE}.swiftmodule>)
+      
+set_target_properties(${target} PROPERTIES
+  INTERFACE_INCLUDE_DIRECTORIES ${CMAKE_CURRENT_BINARY_DIR})
 
   # Generate textual swift interfaces is library-evolution is enabled
   if(${PROJECT_NAME}_ENABLE_LIBRARY_EVOLUTION)