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== AVR32 Toolchain Builder ==
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This is a early implementation of a Makefile for an AVR32 toolchain
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builder for Mac OS X & Linux, and it has not been extensively tested.
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That said the patches are taken directly from Atmel, and basic testing
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is done with some more complicated builds (i.e.:
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link:http://eluaproject.net[eLua] in float and integer mode) to ensure
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that that at least these work after toolchain modifications.
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Note: If you have previously built a toolchain of another version, out
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of the same builder directory, make sure to do the following first
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before building with newer sources:
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----
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make clean
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----
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=== Requirements (OS X) ===
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You will need to have GCC, make and binutils on your machine to
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compile all of this.  You can get all of these on Mac OS X, by just
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installing the Apple
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link:http://developer.apple.com/technologies/tools/[Developer Tools].
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You should be able to download free versions of 3.x from the ADC
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website, install from the OS X install disc that came with your
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machine, or download XCode 4 from the App Store (now free again for
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all registered users).
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You will also need gmp, mpfr and mpc first.  I recommend installing
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these from link:https://github.com/mxcl/homebrew[homebrew] for now.
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I'll add these to the Makefile once I have a consistent configuration
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that can be used for both Linux & OS X.
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With homebrew you can install those dependencies like this:
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----
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brew install mpfr gmp libmpc texinfo
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----
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If you would like to build dfu-programmer, also install libusb:
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brew install libusb-compat
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----
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=== Requirements (Ubuntu) ===
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These instructions should now also work on Ubuntu Linux, provided the
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following packages have been installed prior to attempting the build:
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----
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sudo apt-get install curl flex bison libgmp3-dev libmpfr-dev autoconf build-essential libncurses5-dev libmpc-dev texinfo
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----
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If you would like to build dfu-programmer, also install libusb:
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----
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sudo apt-get install libusb-dev
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----
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=== Main Build Instructions ===
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Next build the toolchain:
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make install-cross
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----
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You should be able to also specify a specific install/prefix location
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by building using the following type of invokation:
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PREFIX=$HOME/avr32-tools make install-cross
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----
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If you do this, make sure you have permissions to create a directory
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at this location and/or to create directories within this location if
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the directory already exists.
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*NOTE:* If you're running Mac OS X Lion or XCode 4.1 you may find that
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 you're unable to bootstrap GCC. To work around this until the issue
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 is fixed in Apple's distribution of llvm-gcc, use the following
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 command instead of the above to build.
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----
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CC=gcc-4.2 make install-cross
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----
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This should build the compiler, newlib, gdb, etc.. and install them all
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into a directory called arm-cs-tools in your home directory. If you
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want to install to another location, feel free to change the export
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lines and to adjust the definitions at the top of the Makefile.
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Keep in mind that the Makefile does install at the end of each build.
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Once you’re done, the makefile should notify you of the install
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location, which will be based on the git revision if you cloned the
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repository or the current date if you grabbed a tarball and/or you
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don't have the git binary. The message should look like the following:
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====== INSTALLATION NOTE ======
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Your tools have now been installed at the following prefix:
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/Users/jsnyder/avr32-tools-bd2485b
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Please be sure to add something similar to the following to your .bash_profile, .zshrc, etc:
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export PATH=/Users/jsnyder/avr32-tools-bd2485b/bin:$PATH
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----
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If it uses the date instead the the git short revision will bve
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replaced with a date number like: 20110726.
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If you also would like dfu-programmer installed intalled (make sure
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you have previously installed libusb as described in requirements):
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make install-dfu
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=== Special Thanks ===
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Special thanks to Rob Emanuele for the basis of this Makefile:
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http://elua-development.2368040.n2.nabble.com/Building-GCC-for-Cortex-td2421927.html