diff --git a/lutin/z_system/lutinSystem_IOs_c.py b/lutin/z_system/lutinSystem_IOs_c.py
new file mode 100644
index 0000000..87a4344
--- /dev/null
+++ b/lutin/z_system/lutinSystem_IOs_c.py
@@ -0,0 +1,24 @@
+#!/usr/bin/python
+# -*- coding: utf-8 -*-
+##
+## @author Edouard DUPIN
+##
+## @copyright 2012, Edouard DUPIN, all right reserved
+##
+## @license APACHE v2.0 (see license file)
+##
+
+from lutin import debug
+from lutin import system
+from lutin import tools
+from lutin import env
+import os
+
+class System(system.System):
+	def __init__(self, target):
+		system.System.__init__(self)
+		# create some HELP:
+		self.set_help("C: Generic C library")
+		self.add_flag("c-remove","-nodefaultlibs")
+		self.set_valid(True)
+
diff --git a/lutin/z_system/lutinSystem_IOs_opengl.py b/lutin/z_system/lutinSystem_IOs_opengl.py
new file mode 100644
index 0000000..09df64a
--- /dev/null
+++ b/lutin/z_system/lutinSystem_IOs_opengl.py
@@ -0,0 +1,30 @@
+#!/usr/bin/python
+# -*- coding: utf-8 -*-
+##
+## @author Edouard DUPIN
+##
+## @copyright 2012, Edouard DUPIN, all right reserved
+##
+## @license APACHE v2.0 (see license file)
+##
+
+from lutin import debug
+from lutin import system
+from lutin import tools
+from lutin import env
+import os
+
+class System(system.System):
+	def __init__(self, target):
+		system.System.__init__(self)
+		# create some HELP:
+		self.set_help("OpenGL: Generic graphic library")
+		self.set_valid(True)
+		# no check needed ==> just add this:
+		self.add_depend([
+		    'c'
+		    ])
+		self.add_flag('link', [
+		    "-framework OpenGLES"])
+	
+
diff --git a/lutin/z_system/lutinSystem_IOs_pthread.py b/lutin/z_system/lutinSystem_IOs_pthread.py
new file mode 100644
index 0000000..4ad5770
--- /dev/null
+++ b/lutin/z_system/lutinSystem_IOs_pthread.py
@@ -0,0 +1,44 @@
+#!/usr/bin/python
+# -*- coding: utf-8 -*-
+##
+## @author Edouard DUPIN
+##
+## @copyright 2012, Edouard DUPIN, all right reserved
+##
+## @license APACHE v2.0 (see license file)
+##
+
+from lutin import debug
+from lutin import system
+from lutin import tools
+from lutin import env
+import os
+
+class System(system.System):
+	def __init__(self, target):
+		system.System.__init__(self)
+		# create some HELP:
+		self.set_help("pthread : Generic multithreading system\n Can be install with the package:\n    - pthread-dev")
+		# check if the library exist:
+		"""
+		if     not os.path.isfile("/usr/include/pthread.h"):
+			# we did not find the library reqiested (just return) (automaticly set at false)
+			return;
+		"""
+		self.set_valid(True)
+		# todo : create a searcher of the presence of the library:
+		self.add_flag("link-lib", "pthread")
+		self.add_depend([
+		    'c'
+		    ])
+		"""
+		if env.get_isolate_system() == True:
+			self.add_header_file([
+			    "/usr/include/sched.h",
+			    "/usr/include/pthread.h"
+			    ],
+			    clip_path="/usr/include/")
+		"""
+	
+
+
diff --git a/lutin/z_system/lutinSystem_Linux_opengl.py b/lutin/z_system/lutinSystem_Linux_opengl.py
index 469be54..d5cf217 100644
--- a/lutin/z_system/lutinSystem_Linux_opengl.py
+++ b/lutin/z_system/lutinSystem_Linux_opengl.py
@@ -27,22 +27,11 @@ class System(system.System):
 		    ])
 		self.add_flag('link-lib', 'GL')
 		if env.get_isolate_system() == True:
-				self.add_header_file([
+			self.add_header_file([
 			    "/usr/include/GL/*"
 			    ],
 			    destination_path="GL",
 			    recursive=True)
-		
-		"""
-		if target.name=="Android":
-			my_module.add_flag('link-lib', "GLESv2")
-		elif target.name=="MacOs":
-			my_module.add_flag('link', [
-			    "-framework OpenGL"])
-		elif target.name=="IOs":
-			my_module.add_flag('link', [
-			    "-framework OpenGLES"
-			    ])
-		"""
+	
 
 
diff --git a/lutin/z_system/lutinSystem_MacOs_opengl.py b/lutin/z_system/lutinSystem_MacOs_opengl.py
new file mode 100644
index 0000000..9f6e7a6
--- /dev/null
+++ b/lutin/z_system/lutinSystem_MacOs_opengl.py
@@ -0,0 +1,31 @@
+#!/usr/bin/python
+# -*- coding: utf-8 -*-
+##
+## @author Edouard DUPIN
+##
+## @copyright 2012, Edouard DUPIN, all right reserved
+##
+## @license APACHE v2.0 (see license file)
+##
+
+from lutin import debug
+from lutin import system
+from lutin import tools
+from lutin import env
+import os
+
+class System(system.System):
+	def __init__(self, target):
+		system.System.__init__(self)
+		# create some HELP:
+		self.set_help("OpenGL: Generic graphic library")
+		self.set_valid(True)
+		# no check needed ==> just add this:
+		self.add_depend([
+		    'c'
+		    ])
+		self.add_flag('link', [
+		    "-framework OpenGL"])
+	
+
+
diff --git a/lutin/z_system/lutinSystem_MacOs_pthread.py b/lutin/z_system/lutinSystem_MacOs_pthread.py
new file mode 100644
index 0000000..4ad5770
--- /dev/null
+++ b/lutin/z_system/lutinSystem_MacOs_pthread.py
@@ -0,0 +1,44 @@
+#!/usr/bin/python
+# -*- coding: utf-8 -*-
+##
+## @author Edouard DUPIN
+##
+## @copyright 2012, Edouard DUPIN, all right reserved
+##
+## @license APACHE v2.0 (see license file)
+##
+
+from lutin import debug
+from lutin import system
+from lutin import tools
+from lutin import env
+import os
+
+class System(system.System):
+	def __init__(self, target):
+		system.System.__init__(self)
+		# create some HELP:
+		self.set_help("pthread : Generic multithreading system\n Can be install with the package:\n    - pthread-dev")
+		# check if the library exist:
+		"""
+		if     not os.path.isfile("/usr/include/pthread.h"):
+			# we did not find the library reqiested (just return) (automaticly set at false)
+			return;
+		"""
+		self.set_valid(True)
+		# todo : create a searcher of the presence of the library:
+		self.add_flag("link-lib", "pthread")
+		self.add_depend([
+		    'c'
+		    ])
+		"""
+		if env.get_isolate_system() == True:
+			self.add_header_file([
+			    "/usr/include/sched.h",
+			    "/usr/include/pthread.h"
+			    ],
+			    clip_path="/usr/include/")
+		"""
+	
+
+
diff --git a/lutin/z_target/lutinTarget_IOs.py b/lutin/z_target/lutinTarget_IOs.py
index 22a1618..abb285f 100644
--- a/lutin/z_target/lutinTarget_IOs.py
+++ b/lutin/z_target/lutinTarget_IOs.py
@@ -55,7 +55,7 @@ class Target(target.Target):
 		#self.suffix_binary=''
 		#self.suffix_package=''
 		
-		if self.sumulator == True:
+		if False: #self.simulator == True:
 			self.sysroot = "-isysroot /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator.sdk"
 			self.add_flag("link", "-mios-simulator-version-min=8.0")
 			self.add_flag("c", "-mios-simulator-version-min=8.0")