diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..96bdef6
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,4 @@
+**/build/
+*.o
+*.a
+.DS_Store
\ No newline at end of file
diff --git a/Project/Linux_Posix/hello_world/CMakeLists.txt b/Project/Linux_Posix/hello_world/CMakeLists.txt
index 8790572..2a5d4c0 100644
--- a/Project/Linux_Posix/hello_world/CMakeLists.txt
+++ b/Project/Linux_Posix/hello_world/CMakeLists.txt
@@ -9,15 +9,13 @@ set(CMAKE_CXX_FLAGS_RELEASE "$ENV{CXXFLAGS} -O3 -Wall")
 set(TINY_ROOT ../../../)
 
 include_directories(${TINY_ROOT}/osal/cmsis_os)
-include_directories(${TINY_ROOT}/kernel/core/include)
-include_directories(${TINY_ROOT}/kernel/evtdrv/include)
-include_directories(${TINY_ROOT}/kernel/hal/include)
-include_directories(${TINY_ROOT}/kernel/pm/include)
+include_directories(${TINY_ROOT}/core/include)
+include_directories(${TINY_ROOT}/hal/include)
+include_directories(${TINY_ROOT}/pm/include)
 
 set(CMSIS_SRCS ${TINY_ROOT}/osal/cmsis_os/cmsis_os.c)
-aux_source_directory(${TINY_ROOT}/kernel/core CORE_SRCS)
-aux_source_directory(${TINY_ROOT}/kernel/evtdrv EVTDRV_SRCS)
-aux_source_directory(${TINY_ROOT}/kernel/pm PM_SRCS)
+aux_source_directory(${TINY_ROOT}/core CORE_SRCS)
+aux_source_directory(${TINY_ROOT}/pm PM_SRCS)
 
 set(ARCH_ROOT ${TINY_ROOT}/arch/linux)
 
diff --git a/arch/linux/posix/gcc/port.h b/arch/linux/posix/gcc/port.h
index a8f0f28..92f0904 100644
--- a/arch/linux/posix/gcc/port.h
+++ b/arch/linux/posix/gcc/port.h
@@ -47,7 +47,12 @@
 
 #define SIG_SUSPEND					SIGUSR1
 #define SIG_RESUME					SIGUSR2
+#ifdef __APPLE__
+#define SIG_CONTEXT_SWITCH          SIGIO
+#warning this signal just for compile pass on macOS, can not real run
+#else
 #define SIG_CONTEXT_SWITCH          SIGRTMIN
+#endif
 #define SIG_TICK					SIGALRM
 #define TIMER_TYPE					ITIMER_REAL