Compiling the Atmel-patched AVR toolchain

instructions.md

#Compiling AVR toolchain

http://distribute.atmel.no/tools/opensource/Atmel-AVR-Toolchain-3.4.1/avr/

Binutils

Rebuild configure script with autoconf in root and in bfd? May need to hack the Makefile.am if the autotools version is wrong.

(cd bfd; ./configure && make headers)

TARGET=avr
build_platform=$(shell uname -i)-pc-linux-gnu
host_platform=$(shell uname -i)-pc-linux-gnu
ATMEL_VERSION=3.4.1


mkdir build; cd build;

../configure     --build=$(DEB_BUILD_GNU_TYPE) \
	--host=$(DEB_HOST_GNU_TYPE) \
	--target=$(TARGET) \
	--host=${host_platform} \
	--build=${build_platform} \
	--with-pkgversion="AVR_8_bit_GNU_Toolchain_${ATMEL_VERSION}_ppa" \
	--with-bugurl="http://www.atmel.com" \
	--disable-nls \
	--disable-werror \
	--enable-install-libiberty \
	--enable-install-libbfd \
	--prefix=/usr/lib \
	--infodir=/usr/share/info \
	--mandir=/usr/share/man \
	--bindir=/usr/bin \
	--libexecdir=/usr/lib \
	--libdir=/usr/lib \

make -j5
make install

GCC-AVR

Apply patch from http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51969 if building with GCC 4.7 host compiler.

mkdir build; cd build;

../configure 	--build=$(DEB_BUILD_GNU_TYPE) \
	--host=$(DEB_HOST_GNU_TYPE) \
	--target=$(TARGET) \
	--host=${host_platform} \
	--build=${build_platform} \
	--with-pkgversion="AVR_8_bit_GNU_Toolchain_${ATMEL_VERSION}_ppa" \
	--with-bugurl="http://www.atmel.com" \
	--with-dwarf2 \
	--enable-doc \
	--disable-shared \
	--disable-libada \
	--disable-libssp \
	--disable-nls \
	--enable-languages=c,c++ \
	--enable-fixed-point \
	--prefix=/usr/lib \
	--infodir=/usr/share/info \
	--mandir=/usr/share/man \
	--bindir=/usr/bin \
	--libexecdir=/usr/lib \
	--libdir=/usr/lib \

make -j5
make install

If using a build system, make sure it does not automatically try to strip all binaries, as amd64 strip will mangle the AVR libs.

AVR libc

Extract their separate headers tarball as avr-headers

cp avr-headers/io[0-9a-zA-Z]*.h include/avr/

./bootstrap

mkdir build; cd build;

../configure    --build=$(DEB_BUILD_GNU_TYPE) \
	--host=avr \
	--target=$(TARGET) \
	--prefix=/usr/lib \
	--infodir=/usr/share/info \
	--mandir=/usr/share/man \
	--bindir=/usr/bin \
	--libexecdir=/usr/lib \
	--libdir=/usr/lib \

make -j5 
make install

If using a build system, make sure it does not automatically try to strip all binaries, as amd64 strip will mangle the AVR libs.