diff --git a/src/meson.build b/src/meson.build
index f53bbcd8df4ea18aa7ff39c58fd71774fb146128..20629160443c56c0515bfc96a46f14bbe080d8d1 100644
--- a/src/meson.build
+++ b/src/meson.build
@@ -18,8 +18,9 @@ ext_deps = []
 deps = static_link_libraries
 
 if get_option('buildtype').contains('debug')
+	# debug compile need with debuginfo
 	default_cflags += [ '-pedantic', '-DPEDANTIC', '-Og', '-g', '-rdynamic' ]
-	default_ldflags += ['-rdynamic']
+	default_ldflags += [ '-Og', '-g', '-rdynamic']
 else
 	default_cflags += [ '-UPEDANTIC', '-O2' ]
 endif
diff --git a/tests/test_simple/Makefile b/tests/test_simple/Makefile
index 261d425364177420d4e73ab6fe9065ab9ce790a8..7b2379b513d1d171bbaa79b81629506a2e3df17c 100644
--- a/tests/test_simple/Makefile
+++ b/tests/test_simple/Makefile
@@ -30,7 +30,6 @@ simple_app:
 
 # static mode
 simple: simple_app
-	clear
 	@echo ===rto===
 	$(SYSBOOST) --static-nold $(TEST_APP) $(LIBC)
 	readelf -W -a $(TEST_APP).rto > simple_app.rto.elf