diff --git a/README.md b/README.md
index 233f6dc..75327ff 100644
--- a/README.md
+++ b/README.md
@@ -37,14 +37,23 @@ On Linux, you might prefer:
     AVR_TOOLS_DIR = /usr
 
 The Makefile also delegates resetting the board to a short Perl program.
-You'll need to install Device::SerialPort to use it though. On Debian or 
-Ubuntu do
+You'll need to install Device::SerialPort to use it though. You'll also
+need the YAML library to run ard-parse-boards.
 
-       apt-get install libdevice-serialport-perl libconfig-yaml-perl
+On Debian or Ubuntu:
 
-On other systems
+       apt-get install libdevice-serial-perl
+       apt-get install libyaml-perl
+
+On Fedora:
+
+       yum install perl-Device-SerialPort
+       yum install perl-YAML
+
+On other systems:
 
        cpanm Device::SerialPort
+       cpanm YAML
 
 ## User Libraries
 
@@ -91,6 +100,9 @@ The following are the list of changes that I have made or merged in this fork. H
 ###   0.9.3.2 10.ix.2012 Sudar
 - Fixed a typo in README. Issue reported at upstream (https://github.com/mjoldfield/Arduino-Makefile/issues/21)
 
+###   0.10 17.ix.12   M J Oldfield
+- Merged all changes from Upstream
+
 ## Know Issues
 - Because of the way the makefile is structured, the configuration parameters gets printed twice. 
 - Doesn't work with Leonardo yet.
diff --git a/arduino-mk/Arduino.mk b/arduino-mk/Arduino.mk
index b47a025..96c6083 100644
--- a/arduino-mk/Arduino.mk
+++ b/arduino-mk/Arduino.mk
@@ -113,6 +113,21 @@
 #                          - Added support for utility directory
 #                            within SYS and USER libraries
 #
+#   	0.9.3.2 10.ix.2012 Sudar
+# 						   - Fixed a typo in README. Issue reported at upstream (https://github.com/mjoldfield/Arduino-Makefile/issues/21)
+#
+#          0.10 17.ix.12   M J Oldfield
+#            - Added installation notes for Fedora (ex Rickard Lindberg).
+#            - Changed size target so that it looks at the ELF object, 
+#              not the hexfile (ex Jared Szechy and Scott Howard).
+#            - Fixed ARDUNIO typo in README.md (ex Kalin Kozhuharov).
+#            - Tweaked OBJDIR handling (ex Matthias Urlichs and Scott Howard).
+#            - Changed the name of the Debian/Ubuntu package (ex
+#              Scott Howard).
+#            - Only set AVRDUDE_CONF if it's not set (ex Tom Hall).
+#            - Added support for USB_PID/VID used by the Leonardo (ex Dan
+#              Villiom Podlaski Christiansen and Marc Plano-Lesay).
+#                      
 ########################################################################
 #
 # PATHS YOU NEED TO SET UP
@@ -511,6 +526,15 @@ ifndef F_CPU
     F_CPU = $(shell $(PARSE_BOARD_CMD) $(BOARD_TAG) build.f_cpu)
 endif
 
+# USB IDs for the Leonardo
+ifndef USB_VID
+USB_VID = $(shell $(PARSE_BOARD_CMD) $(BOARD_TAG) build.vid)
+endif
+
+ifndef USB_PID
+USB_PID = $(shell $(PARSE_BOARD_CMD) $(BOARD_TAG) build.pid)
+endif
+
 # normal programming info
 ifndef AVRDUDE_ARD_PROGRAMMER
     AVRDUDE_ARD_PROGRAMMER = $(shell $(PARSE_BOARD_CMD) $(BOARD_TAG) upload.protocol)
@@ -541,8 +565,10 @@ ifndef ISP_EXT_FUSE
     ISP_EXT_FUSE       = $(shell $(PARSE_BOARD_CMD) $(BOARD_TAG) bootloader.extended_fuses)
 endif
 
-# Everything gets built in here
-OBJDIR  	  = build-cli
+# Everything gets built in here (include BOARD_TAG now)
+ifndef OBJDIR
+OBJDIR  	  = build-$(BOARD_TAG)
+endif
 
 ########################################################################
 # Local sources
@@ -651,6 +677,7 @@ USER_LIB_OBJS = $(patsubst $(USER_LIB_PATH)/%.cpp,$(OBJDIR)/libs/%.o,$(USER_LIB_
 CPPFLAGS      += -mmcu=$(MCU) -DF_CPU=$(F_CPU) -DARDUINO=$(ARDUINO_VERSION) \
 			-I. -I$(ARDUINO_CORE_PATH) -I$(ARDUINO_VAR_PATH)/$(VARIANT) \
 			$(SYS_INCLUDES) $(USER_INCLUDES) -g -Os -w -Wall \
+			-DUSB_VID=$(USB_VID) -DUSB_PID=$(USB_PID) \
 			-ffunction-sections -fdata-sections
 CFLAGS        += -std=gnu99
 CXXFLAGS      += -fno-exceptions