module: support multi-module builds

To be able to build and sign multiple modules within one build we
need to unify name generation. For signing we invoke something like
west sign -i smart_amp_test
which means, that the west sign utility must be able to locate the
module binary directory and recognise files in it using only that
input file name. It will then create signed llext images inside those
binary directpries too, so that deployment scripts can find and
recognise them there. We unify the naming as
${MODULE}_llext - for the binary directory,
${MODULE}.so - ELF file for signing in that directory
${MODULE}.llext - final signed extension
llext.uuid - a file with a list of UUIDs, provided by this extension

Signed-off-by: Guennadi Liakhovetski <[email protected]>

src/samples/audio/smart_amp_llext/CMakeLists.txt → src/samples/audio/smart_amp_test_llext/CMakeLists.txt

@@ -65,12 +65,12 @@ target_compile_options(${MODULE} PRIVATE
 
 if("${ZEPHYR_TOOLCHAIN_VARIANT}" STREQUAL "zephyr")
 set(MODULE_LINKER_PARAMS -nostdlib -nodefaultlibs)
-set(EXTRA_LINKED_PARAMS -shared)
-set(COPY_CMD ${CMAKE_STRIP} -R .xt.* -o ${MODULE}_out.so ${MODULE}_llext.so)
+set(EXTRA_LINKER_PARAMS -shared)
+set(COPY_CMD ${CMAKE_STRIP} -R .xt.* -o ${MODULE}.so ${MODULE}_pre.so)
 else()
 set(MODULE_LINKER_PARAMS -nostdlib -nodefaultlibs -r)
-set(EXTRA_LINKED_PARAMS)
-set(COPY_CMD ${CMAKE_OBJCOPY} -R .xt.* ${MODULE}_llext.so ${MODULE}_out.so)
+set(EXTRA_LINKER_PARAMS)
+set(COPY_CMD ${CMAKE_OBJCOPY} -R .xt.* ${MODULE}_pre.so ${MODULE}.so)
 endif()
 
 target_link_options(${MODULE} PRIVATE
@@ -81,8 +81,8 @@ add_custom_command(OUTPUT lib${MODULE}_out.so
 	DEPENDS ${MODULE}
 	COMMAND ${SOF_BASE}scripts/llext_link_helper.py
 		-f lib${MODULE}.so -t "0xa06ca000" ${CMAKE_C_COMPILER} --
-		${MODULE_LINKER_PARAMS} ${EXTRA_LINKED_PARAMS} -fPIC
-		-o ${MODULE}_llext.so $<TARGET_OBJECTS:${MODULE}>
+		${MODULE_LINKER_PARAMS} ${EXTRA_LINKER_PARAMS} -fPIC
+		-o ${MODULE}_pre.so $<TARGET_OBJECTS:${MODULE}>
 	COMMAND ${COPY_CMD}
 	COMMAND_EXPAND_LISTS
 )

zephyr/CMakeLists.txt

@@ -794,8 +794,8 @@ if(CONFIG_IPC_MAJOR_3)
 	)
 elseif(CONFIG_IPC_MAJOR_4)
 	if(CONFIG_SAMPLE_SMART_AMP STREQUAL "m")
-		add_subdirectory(${SOF_SAMPLES_PATH}/audio/smart_amp_llext
-				 ${PROJECT_BINARY_DIR}/smart_amp_llext)
+		add_subdirectory(${SOF_SAMPLES_PATH}/audio/smart_amp_test_llext
+				 ${PROJECT_BINARY_DIR}/smart_amp_test_llext)
 		add_dependencies(app smart_amp_test_llext)
 	elseif(CONFIG_SAMPLE_SMART_AMP)
 		zephyr_library_sources(