diff --git a/patchs/devLib_Makefile.patch b/patchs/devLib_Makefile.patch
index cb9fc41..81a65ec 100644
--- a/patchs/devLib_Makefile.patch
+++ b/patchs/devLib_Makefile.patch
@@ -1,19 +1,19 @@
 --- Makefile_org	2014-07-04 09:48:18.000000000 +0200
 +++ Makefile	2014-07-04 10:12:15.000000000 +0200
-@@ -26,6 +26,7 @@
+@@ -26,6 +26,7 @@ DYN_VERS_MIN=0
  VERSION=$(DYN_VERS_MAJ).$(DYN_VERS_MIN)
  DESTDIR=/usr
- PREFIX=/local
+ PREFIX?=/local
 +PWD=`pwd`
  
  STATIC=libwiringPiDev.a
  DYNAMIC=libwiringPiDev.so.$(VERSION)
-@@ -33,7 +34,7 @@
+@@ -33,7 +34,7 @@ DYNAMIC=libwiringPiDev.so.$(VERSION)
  #DEBUG	= -g -O0
  DEBUG	= -O2
- CC	= gcc
+ CC	?= gcc
 -INCLUDE	= -I.
 +INCLUDE	= -I. -I$(PWD)/../wiringPi
- DEFS	= -D_GNU_SOURCE
- CFLAGS	= $(DEBUG) -Wformat=2 -Wall $(INCLUDE) -Winline -pipe -fPIC
+ CFLAGS	+= $(DEBUG) -Wformat=2 -Wall $(INCLUDE) -Winline -pipe -fPIC
  
+ LIBS    =
diff --git a/patchs/gpio_Makefile.patch b/patchs/gpio_Makefile.patch
index e50bfe0..03e007a 100644
--- a/patchs/gpio_Makefile.patch
+++ b/patchs/gpio_Makefile.patch
@@ -1,17 +1,17 @@
 --- Makefile_org	2014-07-04 09:58:05.000000000 +0200
-+++ Makefile	2014-07-04 10:13:01.000000000 +0200
++++ Makefile	2014
 @@ -25,14 +25,15 @@
  
  DESTDIR=/usr
- PREFIX=/local
+ PREFIX?=/local
 +PWD=`pwd`
  
  #DEBUG	= -g -O0
  DEBUG	= -O2
- CC	= gcc
+ CC	?= gcc
 -INCLUDE	= -I$(DESTDIR)$(PREFIX)/include
 +INCLUDE	= -I$(PWD)/../wiringPi -I$(PWD)/../devLib
- CFLAGS	= $(DEBUG) -Wall $(INCLUDE) -Winline -pipe
+ CFLAGS	+= $(DEBUG) -Wall $(INCLUDE) -Winline -pipe
  
 -LDFLAGS	= -L$(DESTDIR)$(PREFIX)/lib
 +LDFLAGS	= -L$(PWD)/../wiringPi -L$(PWD)/../devLib
diff --git a/src/extensions/pca9685.cc b/src/extensions/pca9685.cc
deleted file mode 100644
index 309347c..0000000
--- a/src/extensions/pca9685.cc
+++ /dev/null
@@ -1,30 +0,0 @@
-#include "pca9685.h"
-#include <pca9685.h>
-
-DECLARE(pca9685Setup);
-
-IMPLEMENT(pca9685Setup) {
-  SCOPE_OPEN();
-  
-  SET_ARGUMENT_NAME(0, pinBase);
-  SET_ARGUMENT_NAME(1, i2cAddress);
-  SET_ARGUMENT_NAME(2, frequency);
-  
-  CHECK_ARGUMENTS_LENGTH_EQUAL(3);
-  
-  CHECK_ARGUMENT_TYPE_INT32(0);
-  CHECK_ARGUMENT_TYPE_INT32(1);
-  CHECK_ARGUMENT_TYPE_INT32(2);
-  
-  int pinBase = GET_ARGUMENT_AS_INT32(0);
-  int i2cAddress = GET_ARGUMENT_AS_INT32(1);
-  int freq = GET_ARGUMENT_AS_INT32(2);
-  
-  int res = ::pca9685Setup(pinBase, i2cAddress, freq);
-  
-  SCOPE_CLOSE(INT32(res));
-}
-
-IMPLEMENT_EXPORT_INIT(pca9685) {
-  EXPORT_FUNCTION(pca9685Setup);
-}
\ No newline at end of file
diff --git a/src/extensions/pca9685.h b/src/extensions/pca9685.h
deleted file mode 100644
index bbf4dc3..0000000
--- a/src/extensions/pca9685.h
+++ /dev/null
@@ -1,8 +0,0 @@
-#ifndef _WPI_PCA9685_H_
-#define _WPI_PCA9685_H_
-
-  #include "../addon.h"
-  
-  DECLARE_EXPORT_INIT(pca9685);
-
-#endif
\ No newline at end of file