diff --git a/CMakeLists.txt b/CMakeLists.txt
index ef2fcb3e69..58fd6312d5 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -336,9 +336,8 @@ endforeach()
 
 # Add the binary directory first, so that port.h is included after it has
 # been generated.
+include_directories(${PROJECT_BINARY_DIR} ${CMAKE_CURRENT_SOURCE_DIR})
 target_include_directories(${PROJECT_NAME} PUBLIC
-    $<BUILD_INTERFACE:${PROJECT_BINARY_DIR}>
-    $<BUILD_INTERFACE:${PROJECT_SOURCE_DIR}>
     $<INSTALL_INTERFACE:include>
 )