--- a/src/usr/CMakeLists.txt	Fri Jul 05 16:39:01 2019 +0900
+++ b/src/usr/CMakeLists.txt	Fri Jul 05 17:06:31 2019 +0900
@@ -1,4 +1,5 @@
 cmake_minimum_required(VERSION 3.8)
+set(CMAKE_C_COMPILER "/usr/bin/cc")
 project(usr C ASM)
 
 
@@ -48,13 +49,13 @@
     target_link_libraries(${_Gears_TARGET} ulib)
 endmacro()
 
-add_library(ulib STATIC  ulib.c usys.c printf.c umalloc.c)
+add_library(ulib STATIC  ulib.c usys.S printf.c umalloc.c)
 
-set(USR_COMMANDS _cat _echo _grep _init _kill _ln _ls _mkdir _rm _sh _stressfs _usertests _wc _zombie _hello)
+set(USRCOMMANDS cat echo grep init kill ln ls mkdir rm sh stressfs usertests wc zombie hello)
 
-foreach(cmd ${USR_COMMANDS) 
-    GearsCommand (TARGET ${cmd} SOURCES ${cmd}.c) 
-end foreach(cmd)
+foreach(cmd ${USR_COMMANDS}) 
+    GearsCommand (TARGET _${cmd} SOURCES ${cmd}.c) 
+endforeach(cmd)
 
 add_custom_command(OUTPUT fs.img
   COMMAND ./mkfs fs.img ${USR_COMMAND} UNIX