diff --git a/cmake/config.cmake b/cmake/config.cmake
index adfe2477db..66c3a15941 100644
--- a/cmake/config.cmake
+++ b/cmake/config.cmake
@@ -14,6 +14,24 @@
 
 cmake_minimum_required(VERSION 2.8)
 
+string(TOLOWER ${CMAKE_SYSTEM_NAME} CFG_SYS_NAME)
+string(TOLOWER ${CMAKE_SYSTEM_PROCESSOR} CFG_SYS_PROCESSOR)
+
+if(${CFG_SYS_NAME} STREQUAL "linux")
+  if(${CFG_SYS_PROCESSOR} STREQUAL "x86" OR
+     ${CFG_SYS_PROCESSOR} STREQUAL "x86_64")
+    set(DEVICE_DEPENDS "x86-linux")
+  elseif(${CFG_SYS_PROCESSOR} STREQUAL "armv7l-hf")
+    set(DEVICE_DEPENDS "arm-linux")
+  endif()
+elseif(${CFG_SYS_NAME} STREQUAL "darwin")
+  message(fatal "Darwin not ready")
+elseif(${CFG_SYS_NAME} STREQUAL "external")
+  if(${CFG_SYS_PROCESSOR} STREQUAL "arm")
+    set(DEVICE_DEPENDS "arm-nuttx")
+  endif()
+endif()
+
 set(CC ${CMAKE_C_COMPILER})
 set(CXX ${CMAKE_CXX_COMPILER})
 
diff --git a/cmake/config/arm-linux.cmake b/cmake/config/arm-linux.cmake
new file mode 100644
index 0000000000..a91930e6d2
--- /dev/null
+++ b/cmake/config/arm-linux.cmake
@@ -0,0 +1,39 @@
+# Copyright 2015 Samsung Electronics Co., Ltd.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+include(CMakeForceCompiler)
+
+set(CMAKE_SYSTEM_NAME Linux)
+set(CMAKE_SYSTEM_PROCESSOR armv7l-hf)
+
+set(EXTERNAL_CMAKE_C_COMPILER arm-linux-gnueabihf-gcc)
+set(EXTERNAL_CMAKE_CXX_COMPILER arm-linux-gnueabihf-g++)
+
+CMAKE_FORCE_C_COMPILER(${EXTERNAL_CMAKE_C_COMPILER} GNU)
+CMAKE_FORCE_CXX_COMPILER(${EXTERNAL_CMAKE_CXX_COMPILER} GNU)
+
+set(FLAGS_COMMON -mlittle-endian
+                 -mthumb
+                 -mfpu=vfpv3-d16
+                 -D__LINUX__
+                 -D__ARM__)
+
+foreach(FLAG ${FLAGS_COMMON})
+  set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${FLAG}")
+  set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${FLAG}")
+endforeach()
+
+set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fpermissive")
+set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fno-exceptions")
+set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fno-rtti")
diff --git a/cmake/config/arm-nuttx.cmake b/cmake/config/arm-nuttx.cmake
index 0e45ed8ea2..e84a345c01 100644
--- a/cmake/config/arm-nuttx.cmake
+++ b/cmake/config/arm-nuttx.cmake
@@ -16,7 +16,6 @@ include(CMakeForceCompiler)
 
 set(CMAKE_SYSTEM_NAME EXTERNAL)
 set(CMAKE_SYSTEM_PROCESSOR arm)
-set(CMAKE_SYSTEM_VERSION NUTTX)
 
 set(EXTERNAL_CMAKE_C_COMPILER arm-none-eabi-gcc)
 set(EXTERNAL_CMAKE_CXX_COMPILER arm-none-eabi-g++)
@@ -26,7 +25,6 @@ CMAKE_FORCE_CXX_COMPILER(${EXTERNAL_CMAKE_CXX_COMPILER} GNU)
 
 set(NO_PTHREAD YES)
 set(BUILD_TO_LIB YES)
-set(DEVICE_DEPENDS "nuttx-stm32f4disco")
 
 set(FLAGS_COMMON -mcpu=cortex-m4
                  -mthumb
diff --git a/cmake/config/i686-linux.cmake b/cmake/config/i686-linux.cmake
index 32e29458d9..e86571c83e 100644
--- a/cmake/config/i686-linux.cmake
+++ b/cmake/config/i686-linux.cmake
@@ -17,8 +17,6 @@ include(CMakeForceCompiler)
 set(CMAKE_SYSTEM_NAME Linux)
 set(CMAKE_SYSTEM_PROCESSOR x86)
 
-set(DEVICE_DEPENDS "linux-x86")
-
 set(FLAGS_COMMON -D__LINUX__
                  -D__i686__
                  -fno-builtin)
diff --git a/cmake/config/x86_64-linux.cmake b/cmake/config/x86_64-linux.cmake
index 4f64c55108..856f4e4f7e 100644
--- a/cmake/config/x86_64-linux.cmake
+++ b/cmake/config/x86_64-linux.cmake
@@ -17,8 +17,6 @@ include(CMakeForceCompiler)
 set(CMAKE_SYSTEM_NAME Linux)
 set(CMAKE_SYSTEM_PROCESSOR x86_64)
 
-set(DEVICE_DEPENDS "linux-x86")
-
 set(FLAGS_COMMON -D__LINUX__
                  -D__x86_64__
                  -fno-builtin)
diff --git a/src/device/arm-linux/giopctl-arm-linux.cpp b/src/device/arm-linux/giopctl-arm-linux.cpp
new file mode 100644
index 0000000000..227ed81121
--- /dev/null
+++ b/src/device/arm-linux/giopctl-arm-linux.cpp
@@ -0,0 +1,82 @@
+/* Copyright 2015 Samsung Electronics Co., Ltd.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "iotjs_def.h"
+#include "iotjs_module_gpioctl.h"
+
+
+namespace iotjs {
+
+
+class GpioControlInst : public GpioControl {
+public:
+  explicit GpioControlInst(JObject& jgpioctl);
+  virtual int Initialize(void);
+  virtual void Release(void);
+  virtual int PinMode(uint32_t portpin);
+  virtual int WritePin(uint32_t portpin, uint8_t data);
+  virtual int ReadPin(uint32_t portpin, uint8_t* pdata);
+};
+
+
+//-----------------------------------------------------------------------------
+
+GpioControl* GpioControl::Create(JObject& jgpioctl)
+{
+  return new GpioControlInst(jgpioctl);
+}
+
+
+GpioControlInst::GpioControlInst(JObject& jgpioctl)
+    : GpioControl(jgpioctl) {
+}
+
+
+int GpioControlInst::Initialize(void) {
+  if (_fd > 0 )
+    return IOTJS_GPIO_INUSE;
+
+  _fd = 1;
+  return _fd;
+}
+
+
+void GpioControlInst::Release(void) {
+  _fd = 0;
+}
+
+
+int GpioControlInst::PinMode(uint32_t portpin) {
+  if (_fd <= 0)
+    return IOTJS_GPIO_NOTINITED;
+  return 0;
+}
+
+
+int GpioControlInst::WritePin(uint32_t portpin, uint8_t data) {
+  if (_fd <= 0)
+    return IOTJS_GPIO_NOTINITED;
+  return 0;
+}
+
+
+int GpioControlInst::ReadPin(uint32_t portpin, uint8_t* pdata) {
+  if (_fd <= 0)
+    return IOTJS_GPIO_NOTINITED;
+  return 0;
+}
+
+
+} // namespace iotjs
diff --git a/src/device/nuttx-stm32f4disco/gpioctl_nuttx_stm32f4disco.cpp b/src/device/arm-nuttx/gpioctl_arm_nuttx.cpp
similarity index 100%
rename from src/device/nuttx-stm32f4disco/gpioctl_nuttx_stm32f4disco.cpp
rename to src/device/arm-nuttx/gpioctl_arm_nuttx.cpp
diff --git a/src/device/linux-x86/gpioctl_linux_x86.cpp b/src/device/x86-linux/gpioctl_x86_linux.cpp
similarity index 100%
rename from src/device/linux-x86/gpioctl_linux_x86.cpp
rename to src/device/x86-linux/gpioctl_x86_linux.cpp
diff --git a/src/iotjs_module_gpioctl.h b/src/iotjs_module_gpioctl.h
index 2980cd7fd7..f79a520a40 100644
--- a/src/iotjs_module_gpioctl.h
+++ b/src/iotjs_module_gpioctl.h
@@ -17,6 +17,7 @@
 #define IOTJS_MODULE_GPIOCTL_H
 
 #include "iotjs_binding.h"
+#include "iotjs_objectwrap.h"
 
 
 namespace iotjs {
diff --git a/tools/build.py b/tools/build.py
index 6169f8a139..581388c232 100755
--- a/tools/build.py
+++ b/tools/build.py
@@ -136,6 +136,7 @@ def sys_machine():
     'tidy': True,
     'jerry-memstats': False,
     'checktest': True,
+    'jerry-heaplimit': 81,
 }
 
 boolean_opts = ['buildlib',
@@ -189,6 +190,9 @@ def opt_jerry_memstats():
 def opt_checktest():
     return options['checktest']
 
+def opt_jerry_heaplimit() :
+    return options['jerry-heaplimit']
+
 def parse_boolean_opt(name, arg):
     if arg.endswith(name):
         options[name] = False if arg.startswith('no') else True
@@ -217,6 +221,8 @@ def parse_args():
             options[opt] = val
         elif opt == 'nuttx-home':
             options[opt] = val
+        elif opt == 'jerry-heaplimit':
+            options[opt] = val
         else:
             for opt_name in boolean_opts:
                 if parse_boolean_opt(opt_name, opt):
@@ -275,6 +281,8 @@ def build_libuv():
         # libuv is using gyp. run the system according to build target.
         if opt_target_arch() == 'arm' and opt_target_os() =='nuttx':
             check_run_cmd('./nuttx-configure', [opt_nuttx_home()])
+        elif opt_target_arch() == 'arm' and opt_target_os() =='linux':
+            check_run_cmd('./armlinux-configure')
         else:
             check_run_cmd('./gyp_uv.py', ['-f', 'make'])
 
@@ -378,12 +386,17 @@ def build_libjerry():
         jerry_cmake_opt.append('-DCMAKE_TOOLCHAIN_FILE=' +
                                opt_cmake_toolchain_file())
 
+
         # for nuttx build.
         if opt_target_arch() == 'arm' and opt_target_os() =='nuttx':
             # nuttx include path.
             jerry_cmake_opt.append('-DEXTERNAL_LIBC_INTERFACE=' +
                                    join_path([opt_nuttx_home(), 'include']))
-            jerry_cmake_opt.append('-DPLATFORM_EXT=NUTTX')
+            jerry_cmake_opt.append('-DEXTERNAL_CMAKE_SYSTEM_PROCESSOR=arm')
+            jerry_cmake_opt.append('-DEXTERNAL_MEM_HEAP_SIZE_KB=' +
+                                   str(opt_jerry_heaplimit()))
+        elif opt_target_arch() == 'arm' and opt_target_os() =='linux':
+            jerry_cmake_opt.append('-DUSE_COMPILER_DEFAULT_LIBC=YES')
 
         # run cmake.
         # FIXME: Running cmake once cause a problem because cmake does not know