llext: don't build if CONFIG_LLEXT=n

Not all configurations need LLEXT, don't include LLEXT support in
such cases.

Signed-off-by: Guennadi Liakhovetski <guennadi.liakhovetski@linux.intel.com>

Author: lyakh

src/include/sof/llext_manager.h

@@ -11,10 +11,16 @@
 struct comp_driver;
 struct comp_ipc_config;
 
+#if CONFIG_LLEXT
 uintptr_t llext_manager_allocate_module(struct processing_module *proc,
 					const struct comp_ipc_config *ipc_config,
 					const void *ipc_specific_config);
 
 int llext_manager_free_module(const uint32_t component_id);
+#else
+#define llext_manager_allocate_module(proc, ipc_config, ipc_specific_config) 0
+#define llext_manager_free_module(component_id) 0
+#define llext_unload(ext) 0
+#endif
 
 #endif

src/library_manager/lib_manager.c

@@ -29,7 +29,9 @@
 
 #include <zephyr/cache.h>
 #include <zephyr/drivers/mm/system_mm.h>
+#if CONFIG_LLEXT
 #include <zephyr/llext/llext.h>
+#endif
 
 #if CONFIG_LIBRARY_AUTH_SUPPORT
 #include <auth/intel_auth_api.h>

zephyr/CMakeLists.txt

@@ -648,7 +648,7 @@ zephyr_library_sources_ifdef(CONFIG_LIBRARY_MANAGER
 	${SOF_SRC_PATH}/library_manager/lib_notification.c
 )
 
-if (CONFIG_MM_DRV)
+if (CONFIG_MM_DRV AND CONFIG_LLEXT)
 zephyr_library_sources_ifdef(CONFIG_LIBRARY_MANAGER
 	${SOF_SRC_PATH}/library_manager/llext_manager.c
 )