micropython-toolchain.sh

#!/bin/bash

PREFIX=/opt/lm32
MAKE_ARGS=-j128
TARGET=lm32-elf

set -x
set -e

# Build binutils + gcc
# Following the approach at http://openrisc.io/newlib/building.html
mkdir -p toolchain
if [ ! -d toolchain -o ! -d $PREFIX/bin ]; then
(
	cd toolchain

	(
		mkdir -p download
		cd download
		wget -c https://ftp.gnu.org/gnu/binutils/binutils-2.27.tar.gz
		wget -c https://gmplib.org/download/gmp/gmp-6.1.1.tar.xz
		wget -c ftp://ftp.gnu.org/gnu/mpc/mpc-1.0.2.tar.gz
		wget -c http://www.mpfr.org/mpfr-current/mpfr-3.1.5.tar.xz
		wget -c ftp://gcc.gnu.org/pub/gcc/infrastructure/isl-0.15.tar.bz2
		wget -c ftp://sourceware.org/pub/newlib/newlib-2.4.0.20161025.tar.gz

		wget -c https://ftp.gnu.org/gnu/gcc/gcc-6.2.0/gcc-6.2.0.tar.gz
	)

	for i in gmp mpc mpfr isl newlib gcc; do
		echo "Extracting $i"
		if [ -d ${i}-* ]; then rm -rf $PWD/${i}-*; fi
		tar -xf ./download/${i}-*
	done

	rm -rf $PREFIX/*

	export PATH=$PREFIX/bin:$PATH
	(
		cd binutils-*
		./configure --prefix=$PREFIX --target=$TARGET --disable-sim
		make $MAKE_ARGS
		make install
	)


	(
		cd gcc-*
		for i in gmp mpc mpfr isl; do
			ln -s $(realpath $PWD/../${i}-*) $i
		done
	)

	(
	  rm -rf build-gcc-stage1
	  mkdir -p build-gcc-stage1
	  cd build-gcc-stage1
	  ../gcc-*/configure \
		  --target=$TARGET \
		  --enable-languages=c \
		  --disable-shared \
		  --disable-libssp \
		  --prefix=$PREFIX \

	  make $MAKE_ARGS
	  make install-strip
	)

	${TARGET}-gcc --version

	(
	  rm -rf build-newlib
	  mkdir -p build-newlib
	  cd build-newlib
	  ../newlib-*/configure \
		  --target=$TARGET \
		  --prefix=$PREFIX \
		  --disable-multilib \

	  make $MAKE_ARGS
	  make install
	)

	(
	  rm -rf build-gcc-stage2
	  mkdir -p build-gcc-stage2
	  cd build-gcc-stage2
	  ../gcc-*/configure \
		  --target=$TARGET \
		  --enable-languages=c,c++ \
		  --disable-shared \
		  --disable-libssp \
		  --with-newlib \
		  --prefix=$PREFIX \

	  make $MAKE_ARGS
	  make install-strip
	)

	${TARGET}-gcc --version
)
fi

if [ ! -d qemu-litex ]; then
	git clone https://github.com/shenki/qemu-litex.git
else
	cd qemu-litex
	git pull
fi
(
	cd qemu-litex
	./configure --target-list=lm32-softmmu --prefix=$PREFIX
	make $MAKE_ARGS
	make install
)

if [ -d qemu-litex ]; then
	git clone https://github.com/shenki/micropython.git -b lm32
else
	cd micropython
	git pull
fi
cd micropython/lm32
CROSS_COMPILE=$PREFIX/bin/${TARGET}- make deploy

echo Run with
echo PATH=$PREFIX/bin:\$PATH \
	qemu-system-lm32 \
	-M litex \
	-nographic \
	-nodefaults \
	-serial stdio \
	-kernel ./build/firmware.elf