diff --git a/executer/kernel/mcctrl/CMakeLists.txt b/executer/kernel/mcctrl/CMakeLists.txt
index e4da0470..cd048b9e 100644
--- a/executer/kernel/mcctrl/CMakeLists.txt
+++ b/executer/kernel/mcctrl/CMakeLists.txt
@@ -1,3 +1,9 @@
+option(ENABLE_GCOV "Enable GCOV" OFF)
+if (ENABLE_GCOV)
+       add_compile_options("-fprofile-arcs" "-ftest-coverage")
+       add_link_options("-lgcov" "--coverage")
+endif(ENABLE_GCOV)
+
 file(MAKE_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}/arch/${ARCH})
 
 if(ARCH STREQUAL "x86_64")
diff --git a/ihk b/ihk
index 907ed396..797a2379 160000
--- a/ihk
+++ b/ihk
@@ -1 +1 @@
-Subproject commit 907ed3964fcfa818daf1bc769dd10a3298e28252
+Subproject commit 797a23795a4f724a69c521bfc744c41971b8d664