diff --git a/src/samples/audio/smart_amp_test_llext/CMakeLists.txt b/src/samples/audio/smart_amp_test_llext/CMakeLists.txt
index 24aa7b013cb8..4725c9e53b34 100644
--- a/src/samples/audio/smart_amp_test_llext/CMakeLists.txt
+++ b/src/samples/audio/smart_amp_test_llext/CMakeLists.txt
@@ -79,6 +79,10 @@ target_link_options(${MODULE} PRIVATE
 
 add_custom_command(OUTPUT lib${MODULE}_out.so
 	DEPENDS ${MODULE}
+	COMMAND ${CMAKE_C_COMPILER} -E ${CMAKE_CURRENT_LIST_DIR}/llext.toml.h -P -DREM=
+		-I${SOF_BASE} -I${SOF_BASE}src
+		-imacros ../include/generated/autoconf.h
+		-o rimage_config.toml
 	COMMAND ${SOF_BASE}scripts/llext_link_helper.py
 		-f lib${MODULE}.so -t "0xa06ca000" ${CMAKE_C_COMPILER} --
 		${MODULE_LINKER_PARAMS} ${EXTRA_LINKER_PARAMS} -fPIC