+## libusb ##############################################################################
+
+upstream/libusb:
+ mkdir -p `dirname $@`
+ cd upstream; curl http://umn.dl.sourceforge.net/sourceforge/libusb/libusb-0.1.12.tar.gz | tar -xvzf -
+ cd upstream; mv libusb-0.1.12 libusb
+
+upstream/libusb/.built: upstream/libusb
+ cd upstream/libusb; \
+ ./configure && \
+ make
+ touch $@
+
+#java = java -Djava.library.path=$(shell pwd)/lib/ -cp lib/RXTXcomm.jar:slipway.jar
+
+
+
+## for rebuilding usbdrone.hex ###########################################################
+
+build/slipway_drone.hex: src/edu/berkeley/slipway/FtdiBoardSlave.c upstream/avr-libc/.built
+ upstream/prefix/bin/avr-gcc -O3 -mmcu=at94k $< -o $@.o
+ upstream/prefix/bin/avr-objcopy -O ihex $@.o $@
+
+# this only works on my personal setup [adam]
+bitstreams/slipway_drone.bst: build/slipway_drone.hex
+ cp $< /afs/research.cs.berkeley.edu/user/megacz/edu.berkeley.obits/usbdrone.hex
+ fs flush /afs/research.cs.berkeley.edu/user/megacz/edu.berkeley.obits/usbdrone.hex
+ echo okay...
+ read
+ rm /afs/research.cs.berkeley.edu/user/megacz/edu.berkeley.obits/usbdrone.hex
+ diff -u /afs/research.cs.berkeley.edu/user/megacz/stupid/fpslic_stupid.bst $@ && exit -1; true
+ mv /afs/research.cs.berkeley.edu/user/megacz/stupid/fpslic_stupid.bst $@
+ touch $@
+
+
+
+## avr-gcc toolchain and libc ################################################################
+
+upstream/binutils:
+ cd upstream; curl http://ftp.gnu.org/pub/pub/pub/gnu/binutils/binutils-2.16.1.tar.bz2 | tar -xvjf -
+ cd upstream; mv binutils-2.16.1 binutils
+
+upstream/binutils/.built: upstream/binutils
+ mkdir -p upstream/prefix
+ cd upstream/binutils; \
+ PATH=$$PATH:$(shell pwd)/upstream/prefix/bin \
+ ./configure --prefix=$(shell pwd)/upstream/prefix --target=avr && \
+ make && \
+ make install
+ touch $@
+
+upstream/gcc:
+ cd upstream; curl http://ftp.gnu.org/pub/gnu/gcc/gcc-4.0.3/gcc-core-4.0.3.tar.bz2 | tar -xvjf -
+ cd upstream; mv gcc-4.0.3 gcc
+
+upstream/gcc/.built: upstream/gcc upstream/binutils/.built
+ mkdir -p upstream/prefix
+ mkdir -p upstream/gcc-build
+ cd upstream/gcc-build; \
+ PATH=$$PATH:$(shell pwd)/upstream/prefix/bin \
+ ../gcc/configure --prefix=$(shell pwd)/upstream/prefix --target=avr && \
+ PATH=$$PATH:$(shell pwd)/upstream/prefix/bin make && \
+ PATH=$$PATH:$(shell pwd)/upstream/prefix/bin make install
+ touch $@
+
+upstream/avr-libc:
+ cd upstream; curl http://download.savannah.gnu.org/releases/avr-libc/avr-libc-1.4.3.tar.bz2 | tar -xvjf -
+ cd upstream; mv avr-libc-1.4.3 avr-libc
+
+upstream/avr-libc/.built: upstream/avr-libc upstream/gcc/.built
+ cd upstream/avr-libc; \
+ PATH=$$PATH:$(shell pwd)/upstream/prefix/bin \
+ ./configure --prefix=$(shell pwd)/upstream/prefix --host=avr && \
+ PATH=$$PATH:$(shell pwd)/upstream/prefix/bin make && \
+ PATH=$$PATH:$(shell pwd)/upstream/prefix/bin make install
+ touch $@
\ No newline at end of file