diff --git a/src/arch/host/CMakeLists.txt b/src/arch/host/CMakeLists.txt
index 839f995917f4..2452486c4e21 100644
--- a/src/arch/host/CMakeLists.txt
+++ b/src/arch/host/CMakeLists.txt
@@ -19,6 +19,8 @@ set(CONFIG_COMP_MUX 1)
 set(CONFIG_COMP_SWITCH 1)
 set(CONFIG_COMP_DAI 1)
 set(CONFIG_COMP_SEL 1)
+set(CONFIG_TRACE 1)
+set(CONFIG_TRACEE 1)
 
 configure_file (
 	"${PROJECT_SOURCE_DIR}/src/arch/host/config.h.in"
diff --git a/src/arch/host/config.h.in b/src/arch/host/config.h.in
index f4dca43951ee..3bcd143a5e1e 100644
--- a/src/arch/host/config.h.in
+++ b/src/arch/host/config.h.in
@@ -9,3 +9,5 @@
 #define CONFIG_COMP_MUX @CONFIG_COMP_MUX@
 #define CONFIG_COMP_SWITCH @CONFIG_COMP_SWITCH@
 #define CONFIG_COMP_DAI @CONFIG_COMP_DAI@
+#define CONFIG_TRACE @CONFIG_TRACE@
+#define CONFIG_TRACEE @CONFIG_TRACEE@
diff --git a/src/audio/CMakeLists.txt b/src/audio/CMakeLists.txt
index 9dca5e9bb6e4..f022d13cc614 100644
--- a/src/audio/CMakeLists.txt
+++ b/src/audio/CMakeLists.txt
@@ -74,8 +74,6 @@ add_library(sof_audio_core SHARED "")
 target_link_libraries(sof_audio_core PRIVATE sof_options)
 target_link_libraries(sof_audio_core PRIVATE -Wl,--export-dynamic)
 add_local_sources(sof_audio_core
-	dai.c
-	host.c
 	pipeline.c
 	component.c
 	buffer.c
diff --git a/src/host/schedule.c b/src/host/schedule.c
index 920938204290..b92a73e5f514 100644
--- a/src/host/schedule.c
+++ b/src/host/schedule.c
@@ -55,7 +55,10 @@ int schedule_task_init(struct task *task, uint16_t type, uint16_t priority,
 	task->func = func;
 	task->data = data;
 
-	return schedulers[task->type]->schedule_task_init(task, xflags);
+	if (schedulers[task->type]->schedule_task_init)
+		return schedulers[task->type]->schedule_task_init(task, xflags);
+	else
+		return -ENOENT;
 }
 
 void schedule_task(struct task *task, uint64_t start, uint64_t deadline,
diff --git a/src/host/testbench.c b/src/host/testbench.c
index e212a0aa8b48..36283f0f8570 100644
--- a/src/host/testbench.c
+++ b/src/host/testbench.c
@@ -42,10 +42,9 @@
 
 /* shared library look up table */
 struct shared_lib_table lib_table[NUM_WIDGETS_SUPPORTED] = {
-{"file", "", SND_SOC_TPLG_DAPM_AIF_IN, "", 0, NULL},
-{"vol", "libsof_volume.so", SND_SOC_TPLG_DAPM_PGA, "sys_comp_volume_init", 0,
-	NULL},
-{"src", "libsof_src.so", SND_SOC_TPLG_DAPM_SRC, "sys_comp_src_init", 0, NULL},
+	{"file", "", SND_SOC_TPLG_DAPM_AIF_IN, 0, NULL},
+	{"vol", "libsof_volume.so", SND_SOC_TPLG_DAPM_PGA, 0, NULL},
+	{"src", "libsof_src.so", SND_SOC_TPLG_DAPM_SRC, 0, NULL},
 };
 
 /* main firmware context */
@@ -71,7 +70,6 @@ static void parse_libraries(char *libs)
 	char *lib_token = NULL;
 	char *comp_token = NULL;
 	char *token = strtok_r(libs, ",", &lib_token);
-	char message[DEBUG_MSG_LEN];
 	int index;
 
 	while (token) {
@@ -92,19 +90,9 @@ static void parse_libraries(char *libs)
 		if (!token1)
 			break;
 
-		/* close default shared library object */
-		if (lib_table[index].handle)
-			dlclose(lib_table[index].handle);
-
-		/* open volume shared library object */
-		lib_table[index].handle = dlopen(token1, RTLD_LAZY);
-		if (!lib_table[index].handle) {
-			fprintf(stderr, "error: %s\n", dlerror());
-			exit(EXIT_FAILURE);
-		}
-
-		sprintf(message, "opening shared lib %s\n", token1);
-		debug_print(message);
+		/* set to new name that may be used while loading */
+		strncpy(lib_table[index].library_name, token1,
+			MAX_LIB_NAME_LEN - 1);
 
 		/* next library */
 		token = strtok_r(NULL, ",", &lib_token);
@@ -154,25 +142,6 @@ static void free_comps(void)
 	}
 }
 
-static int set_up_library_table(void)
-{
-	int i;
-
-	/* set up default shared libraries */
-	for (i = 1; i < NUM_WIDGETS_SUPPORTED; i++) {
-
-		/* open default shared library */
-		lib_table[i].handle =
-				dlopen(lib_table[i].library_name, RTLD_LAZY);
-		if (!lib_table[i].handle) {
-			fprintf(stderr, "error: %s\n", dlerror());
-			return -EINVAL;
-		}
-	}
-
-	return 0;
-}
-
 static void parse_input_args(int argc, char **argv, struct testbench_prm *tp)
 {
 	int option = 0;
@@ -246,13 +215,6 @@ int main(int argc, char **argv)
 	tp.fs_in = 0;
 	tp.fs_out = 0;
 
-	/* set up shared library look up table */
-	ret = set_up_library_table();
-	if (ret < 0) {
-		fprintf(stderr, "error: setting up shared libraried\n");
-		exit(EXIT_FAILURE);
-	}
-
 	/* command line arguments*/
 	parse_input_args(argc, argv, &tp);
 
diff --git a/src/host/topology.c b/src/host/topology.c
index 08bc296fdfe4..10ee56744380 100644
--- a/src/host/topology.c
+++ b/src/host/topology.c
@@ -53,7 +53,7 @@ struct shared_lib_table *lib_table;
 static void register_comp(int comp_type)
 {
 	int index;
-	char message[DEBUG_MSG_LEN];
+	char message[DEBUG_MSG_LEN + MAX_LIB_NAME_LEN];
 
 	/* register file comp driver (no shared library needed) */
 	if (comp_type == SND_SOC_TPLG_DAPM_DAI_IN ||
@@ -77,11 +77,19 @@ static void register_comp(int comp_type)
 			lib_table[index].comp_name);
 		debug_print(message);
 
-		/* register comp driver */
-		void (*comp_init)() =
-			(void (*)(void))dlsym(lib_table[index].handle,
-					      lib_table[index].comp_init);
-		comp_init();
+		/* open shared library object */
+		sprintf(message, "opening shared lib %s\n",
+			lib_table[index].library_name);
+		debug_print(message);
+
+		lib_table[index].handle = dlopen(lib_table[index].library_name,
+						 RTLD_LAZY);
+		if (!lib_table[index].handle) {
+			fprintf(stderr, "error: %s\n", dlerror());
+			exit(EXIT_FAILURE);
+		}
+
+		/* comp init is executed on lib load */
 		lib_table[index].register_drv = 1;
 	}
 
@@ -828,11 +836,13 @@ int parse_topology(struct sof *sof, struct shared_lib_table *library_table,
 			sprintf(message, "number of DAPM widgets %d\n",
 				hdr->count);
 			debug_print(message);
-			size = sizeof(struct comp_info) * hdr->count;
-			temp_comp_list = (struct comp_info *)malloc(size);
-			num_comps = hdr->count;
 
-			for (i = 0; i < hdr->count; i++)
+			num_comps += hdr->count;
+			size = sizeof(struct comp_info) * num_comps;
+			temp_comp_list = (struct comp_info *)
+					 realloc(temp_comp_list, size);
+
+			for (i = (num_comps - hdr->count); i < num_comps; i++)
 				load_widget(sof, fr_id, fw_id, sched_id,
 					    temp_comp_list,
 					    &pipeline, next_comp_id++,
diff --git a/src/include/host/common_test.h b/src/include/host/common_test.h
index d8f9fe7697a2..e4b09f45cf0d 100644
--- a/src/include/host/common_test.h
+++ b/src/include/host/common_test.h
@@ -66,7 +66,6 @@ struct shared_lib_table {
 	char *comp_name;
 	char library_name[MAX_LIB_NAME_LEN];
 	uint32_t widget_type;
-	const char *comp_init;
 	int register_drv;
 	void *handle;
 };
diff --git a/src/include/sof/audio/component.h b/src/include/sof/audio/component.h
index 85a3f0a390ab..71fdb390ab6f 100644
--- a/src/include/sof/audio/component.h
+++ b/src/include/sof/audio/component.h
@@ -152,6 +152,10 @@
  */
 #ifdef UNIT_TEST
 #define DECLARE_COMPONENT(init)
+#elif CONFIG_HOST
+/* In case of shared libs components are initialised in dlopen */
+#define DECLARE_COMPONENT(init) __attribute__((constructor)) \
+	static void _comp_init(void) { init(); }
 #else
 #define DECLARE_COMPONENT(init) __attribute__((__used__)) \
 	__attribute__((section(".comp_init"))) static void(*f)(void) = init
diff --git a/tools/test/audio/src_run.sh b/tools/test/audio/src_run.sh
index 9c88b17f1320..3c41a4f7a32e 100755
--- a/tools/test/audio/src_run.sh
+++ b/tools/test/audio/src_run.sh
@@ -10,7 +10,7 @@ FN_IN=$5
 FN_OUT=$6
 
 # The HOST_ROOT path need to be retrived from SOFT .configure command
-HOST_ROOT=../../../../host-root
+HOST_ROOT=../../../build_host/install/
 HOST_EXE=$HOST_ROOT/bin/testbench
 HOST_LIB=$HOST_ROOT/lib
 
@@ -18,7 +18,7 @@ HOST_LIB=$HOST_ROOT/lib
 INFMT=s${BITS_IN}le
 OUTFMT=s${BITS_IN}le
 MCLK=24576k
-tplg1=../../test/topology/test-playback-ssp2-mclk-0-I2S-
+tplg1=../../build_tools/test/topology/test-playback-ssp2-mclk-0-I2S-
 tplg2=${COMP}-${INFMT}-${OUTFMT}-48k-${MCLK}-nocodec.tplg
 TPLG=${tplg1}${tplg2}