#!/bin/bash
# Written by Uwe Hermann <uwe@hermann-uwe.de>, released as public domain.
# Modified by Piotr Esden-Tempski <piotr@esden.net>, released as public domain.

#
# Requirements (example is for Debian, replace package names as needed):
#
# apt-get install flex bison libgmp3-dev libmpfr-dev libncurses5-dev \
# libmpc-dev autoconf texinfo build-essential
#
# Or on Ubuntu Maverick give `apt-get build-dep gcc-4.5` a try.
#

# Stop if any command fails
set -e

##############################################################################
# Default settings section
# You probably want to customize those
# You can also pass them as parameters to the script
##############################################################################
TARGET=arm-none-eabi		# Or: TARGET=arm-elf
PREFIX=${HOME}/sat	# Install location of your final toolchain
DARWIN_OPT_PATH=/opt/local	# Path in which MacPorts or Fink is installed
# Set to 'sudo' if you need superuser privileges while installing
SUDO=
# Set to 1 to be quieter while running
QUIET=0
# Set to 1 to use linaro gcc instead of the FSF gcc
USE_LINARO=1
# Set to 1 to enable building of OpenOCD
OOCD_EN=1
# Set to 1 to build libstm32 provided by ST
LIBSTM32_EN=0
# Set to 1 to build libopenstm32 an open source library for stm32
LIBOPENSTM32_EN=1
# Make the gcc default to Cortex-M3
DEFAULT_TO_CORTEX_M3=0
# Override automatic detection of cpus to compile on
CPUS=

##############################################################################
# Parsing command line parameters
##############################################################################

while [ $# -gt 0 ]; do
	case $1 in
		TARGET=*)
		TARGET=$(echo $1 | sed 's,^TARGET=,,')
		;;
		PREFIX=*)
		PREFIX=$(echo $1 | sed 's,^PREFIX=,,')
		;;
		DARWIN_OPT_PATH=*)
		DARWIN_OPT_PATH=$(echo $1 | sed 's,^DARWIN_OPT_PATH=,,')
		;;
		SUDO=*)
		SUDO=$(echo $1 | sed 's,^SUDO=,,')
		;;
		QUIET=*)
		QUIET=$(echo $1 | sed 's,^QUIET=,,')
		;;
		USE_LINARO=*)
		USE_LINARO=$(echo $1 | sed 's,^USE_LINARO=,,')
		;;
		OOCD_EN=*)
		OOCD_EN=$(echo $1 | sed 's,^OOCD_EN=,,')
		;;
		LIBSTM32_EN=*)
		LIBSTM32_EN=$(echo $1 | sed 's,^LIBSTM32_EN=,,')
		;;
		LIBOPENSTM32_EN=*)
		LIBOPENSTM32_EN=$(echo $1 | sed 's,^LIBOPENSTM32_EN=,,')
		;;
		DEFAULT_TO_CORTEX_M3=*)
		DEFAULT_TO_CORTEX_M3=$(echo $1 | sed 's,^DEFAULT_TO_CORTEX_M3=,,')
		;;
		CPUS=*)
		CPUS=$(echo $1 | sed 's,^CPUS=,,')
		;;
		*)
		echo "Unknown parameter: $1"
		exit 1
		;;
	esac

	shift # shifting parameter list to access the next one
done

echo "Settings used for this build are:"
echo "TARGET=$TARGET"
echo "PREFIX=$PREFIX"
echo "DARWIN_OPT_PATH=$DARWIN_OPT_PATH"
echo "SUDO=$SUDO"
echo "QUIET=$QUIET"
echo "USE_LINARO=$USE_LINARO"
echo "OOCD_EN=$OOCD_EN"
echo "LIBSTM32_EN=$LIBSTM32_EN"
echo "LIBOPENSTM32_EN=$LIBOPENSTM32_EN"
echo "DEFAULT_TO_CORTEX_M3=$DEFAULT_TO_CORTEX_M3"
echo "CPUS=$CPUS"

##############################################################################
# Version and download url settings section
##############################################################################
if [ ${USE_LINARO} == 0 ] ; then
	# For FSF GCC:
	GCCVERSION=4.5.2
	GCC=gcc-${GCCVERSION}
	GCCURL=http://ftp.gnu.org/gnu/gcc/${GCC}/${GCC}.tar.gz
else
	# For the Linaro GCC:
	GCCRELEASE=4.5-2011.02-0
	GCCVERSION=4.5-2011.02-0
	GCC=gcc-linaro-${GCCVERSION}
	GCCURL=http://launchpad.net/gcc-linaro/4.5/${GCCRELEASE}/+download/${GCC}.tar.bz2
fi

BINUTILS=binutils-2.21.1
NEWLIB=newlib-1.19.0
GDB=gdb-7.3.1
OOCD=master
LIBCMSIS=v1.10-3
LIBSTM32=v3.0.0-2
LIBSTM32USB=v3.0.1-1
LIBOPENSTM32=master

##############################################################################
# Flags section
##############################################################################

if [ "x${CPUS}" == "x" ]; then
	if which getconf > /dev/null; then
		CPUS=$(getconf _NPROCESSORS_ONLN)
	else
		CPUS=1
	fi

	PARALLEL=-j$((CPUS + 1))
else
	PARALLEL=-j${CPUS}
fi

echo "${CPUS} cpu's detected running make with '${PARALLEL}' flag"

GDBFLAGS=
BINUTILFLAGS=

if [ ${DEFAULT_TO_CORTEX_M3} == 0 ] ; then
	GCCFLAGS=
else
	# To default to the Cortex-M3:
	GCCFLAGS="--with-arch=armv7-m --with-mode=thumb --with-float=soft"
fi

# Pull in the local configuration, if any
if [ -f local.sh ]; then
    . ./local.sh
fi

MAKEFLAGS=${PARALLEL}
TARFLAGS=v

if [ ${QUIET} != 0 ]; then
    TARFLAGS=
    MAKEFLAGS="${MAKEFLAGS} -s"
fi

export PATH="${PREFIX}/bin:${PATH}"

SUMMON_DIR=$(pwd)
SOURCES=${SUMMON_DIR}/sources
STAMPS=${SUMMON_DIR}/stamps


##############################################################################
# Tool section
##############################################################################
TAR=tar

##############################################################################
# OS and Tooldetection section
# Detects which tools and flags to use
##############################################################################

case "$(uname)" in
	Linux)
	echo "Found Linux OS."
	;;
	Darwin)
	echo "Found Darwin OS."
	GCCFLAGS="${GCCFLAGS} \
                  --with-gmp=${DARWIN_OPT_PATH} \
	          --with-mpfr=${DARWIN_OPT_PATH} \
	          --with-mpc=${DARWIN_OPT_PATH} \
		  --with-libiconv-prefix=${DARWIN_OPT_PATH}"
	OOCD_CFLAGS="-I/opt/mine/include -I/opt/local/include"
	OOCD_LDFLAGS="-L/opt/mine/lib -L/opt/local/lib"
	if gcc --version | grep llvm-gcc > /dev/null ; then
		echo "Found you are using llvm gcc, switching to clang for gcc compile."
		GCC_CC=clang
	fi
	;;
	CYGWIN*)
	echo "Found CygWin that means Windows most likely."
	;;
	*)
	echo "Found unknown OS. Aborting!"
	exit 1
	;;
esac

##############################################################################
# Building section
# You probably don't have to touch anything after this
##############################################################################

# Fetch a versioned file from a URL
function fetch {
    if [ ! -e ${STAMPS}/$1.fetch ]; then
        log "Downloading $1 sources..."
        wget -c --no-passive-ftp $2 && touch ${STAMPS}/$1.fetch
    fi
}

# Log a message out to the console
function log {
    echo "******************************************************************"
    echo "* $*"
    echo "******************************************************************"
}

# Unpack an archive
function unpack {
    log Unpacking $*
    # Use 'auto' mode decompression.  Replace with a switch if tar doesn't support -a
    ARCHIVE=$(ls ${SOURCES}/$1.tar.*)
    case ${ARCHIVE} in
	*.bz2)
	    echo "archive type bz2"
	    TYPE=j
	    ;;
	*.gz)
	    echo "archive type gz"
	    TYPE=z
	    ;;
	*)
	    echo "Unknown archive type of $1"
	    echo ${ARCHIVE}
	    exit 1
	    ;;
    esac
    ${TAR} xf${TYPE}${TARFLAGS} ${SOURCES}/$1.tar.*
}

# Install a build
function install {
    log $1
    ${SUDO} make ${MAKEFLAGS} $2 $3 $4 $5 $6 $7 $8
}


mkdir -p ${STAMPS} ${SOURCES}

cd ${SOURCES}

fetch ${BINUTILS} http://ftp.gnu.org/gnu/binutils/${BINUTILS}.tar.bz2
fetch ${GCC} ${GCCURL}
fetch ${NEWLIB} ftp://sources.redhat.com/pub/newlib/${NEWLIB}.tar.gz
fetch ${GDB} http://ftp.gnu.org/gnu/gdb/${GDB}.tar.bz2

if [ ${OOCD_EN} != 0 ]; then
if [ ! -e openocd-${OOCD}.tar.bz2 ]; then
	log "Cloning OpenOCD sources..."
	git clone git://openocd.git.sourceforge.net/gitroot/openocd/openocd openocd-${OOCD}
        cd openocd-${OOCD}
	./bootstrap
	cd ..
	tar cfvj openocd-${OOCD}.tar.bz2 openocd-${OOCD}
        #git archive --format=tar --prefix=openocd-${OOCD}/ ${OOCD} | \
        #    bzip2 --stdout > ../openocd-${OOCD}.tar.bz2
        rm -rf openocd-${OOCD}
fi
fi

if [ ${LIBSTM32_EN} != 0 ]; then
if [ ! -e libcmsis-${LIBCMSIS}.tar.bz2 ]; then
	log "Cloning libcmsis sources..."
	git clone git://git.open-bldc.org/libcmsis.git
        cd libcmsis
        git archive --format=tar --prefix=libcmsis-${LIBCMSIS}/ ${LIBCMSIS} | \
            bzip2 --stdout > ../libcmsis-${LIBCMSIS}.tar.bz2
        cd ..
        rm -rf libcmsis
fi

if [ ! -e libstm32-${LIBSTM32}.tar.bz2 ]; then
	log "Cloning libstm32 sources..."
	git clone git://git.open-bldc.org/libstm32.git
        cd libstm32
        git archive --format=tar --prefix=libstm32-${LIBSTM32}/ ${LIBSTM32} | \
            bzip2 --stdout > ../libstm32-${LIBSTM32}.tar.bz2
        cd ..
        rm -rf libstm32
fi

if [ ! -e libstm32usb-${LIBSTM32USB}.tar.bz2 ]; then
	log "Cloning libstm32usb sources..."
	git clone git://git.open-bldc.org/libstm32usb.git
        cd libstm32usb
        git archive --format=tar --prefix=libstm32usb-${LIBSTM32USB}/ ${LIBSTM32USB} | \
            bzip2 --stdout > ../libstm32usb-${LIBSTM32USB}.tar.bz2
        cd ..
        rm -rf libstm32usb
fi
fi

if [ ${LIBOPENSTM32_EN} != 0 ]; then
if [ ! -e libopenstm32-${LIBOPENSTM32}.tar.bz2 ]; then
	log "Cloning libopenstm32 sources..."
	git clone git://libopenstm32.git.sourceforge.net/gitroot/libopenstm32/libopenstm32
        cd libopenstm32
        git archive --format=tar --prefix=libopenstm32-${LIBOPENSTM32}/ ${LIBOPENSTM32} | \
            bzip2 --stdout > ../libopenstm32-${LIBOPENSTM32}.tar.bz2
        cd ..
        rm -rf libopenstm32
fi
fi

cd ${SUMMON_DIR}

if [ ! -e build ]; then
    mkdir build
fi

if [ ! -e ${STAMPS}/${BINUTILS}.build ]; then
    unpack ${BINUTILS}
    log "Patching binutils to allow SVC support on cortex-m3"
    cd ${BINUTILS}
    patch -p1 -i ../patches/patch-binutils-2.21.1-svc-cortexm3.diff
    cd ..
    cd build
    log "Configuring ${BINUTILS}"
    ../${BINUTILS}/configure --target=${TARGET} \
                             --prefix=${PREFIX} \
                             --enable-interwork \
                             --enable-multilib \
                             --with-gnu-as \
                             --with-gnu-ld \
                             --disable-nls \
                             --disable-werror \
                             ${BINUTILFLAGS}
    log "Building ${BINUTILS}"
    make ${MAKEFLAGS}
    install ${BINUTILS} install
    cd ..
    log "Cleaning up ${BINUTILS}"
    touch ${STAMPS}/${BINUTILS}.build
    rm -rf build/* ${BINUTILS}
fi

if [ ! -e ${STAMPS}/${GCC}-${NEWLIB}.build ]; then
    unpack ${GCC}
    unpack ${NEWLIB}

    log "Adding newlib symlink to gcc"
    ln -f -s `pwd`/${NEWLIB}/newlib ${GCC}
    log "Adding libgloss symlink to gcc"
    ln -f -s `pwd`/${NEWLIB}/libgloss ${GCC}

    if [ ${DEFAULT_TO_CORTEX_M3} == 0 ] ; then
	log "Patching gcc to add multilib support"
	cd ${GCC}
	patch -p0 -i ../patches/patch-gcc-config-arm-t-arm-elf.diff
	cd ..
    fi

    cd build
    if [ "X${GCC_CC}" != "X" ] ; then
	    export GLOBAL_CC=${CC}
	    log "Overriding the default compiler with: \"${GCC_CC}\""
	    export CC=${GCC_CC}
    fi

    log "Configuring ${GCC} and ${NEWLIB}"
    ../${GCC}/configure --target=${TARGET} \
                      --prefix=${PREFIX} \
                      --enable-interwork \
                      --enable-multilib \
                      --enable-languages="c,c++" \
                      --with-newlib \
                      --with-gnu-as \
                      --with-gnu-ld \
                      --disable-nls \
                      --disable-shared \
		      --disable-threads \
                      --with-headers=newlib/libc/include \
		      --disable-libssp \
		      --disable-libstdcxx-pch \
		      --disable-libmudflap \
		      --disable-libgomp \
                      --disable-werror \
		      --with-system-zlib \
		      --disable-newlib-supplied-syscalls \
		      ${GCCFLAGS}
    log "Building ${GCC} and ${NEWLIB}"
    make ${MAKEFLAGS}
    install ${GCC} install
    cd ..
    log "Cleaning up ${GCC} and ${NEWLIB}"

    if [ "X${GCC_CC}" != "X" ] ; then
	    unset CC
	    CC=${GLOBAL_CC}
	    unset GLOBAL_CC
    fi

    touch ${STAMPS}/${GCC}-${NEWLIB}.build
    rm -rf build/* ${GCC} ${NEWLIB}
fi

if [ ! -e ${STAMPS}/${GDB}.build ]; then
    unpack ${GDB}
    cd build
    log "Configuring ${GDB}"
    ../${GDB}/configure --target=${TARGET} \
                      --prefix=${PREFIX} \
                      --enable-interwork \
                      --enable-multilib \
                      --disable-werror \
		      ${GDBFLAGS}
    log "Building ${GDB}"
    make ${MAKEFLAGS}
    install ${GDB} install
    cd ..
    log "Cleaning up ${GDB}"
    touch ${STAMPS}/${GDB}.build
    rm -rf build/* ${GDB}
fi

if [ ${OOCD_EN} != 0 ]; then
if [ ! -e ${STAMPS}/openocd-${OOCD}.build ]; then
    unpack openocd-${OOCD}
    cd build
    log "Configuring openocd-${OOCD}"
    CFLAGS="${CFLAGS} ${OOCD_CFLAGS}" \
    LDFLAGS="${LDFLAGS} ${OOCD_LDFLAGS}" \
    ../openocd-${OOCD}/configure --enable-maintainer-mode \
				 --disable-werror \
				 --prefix=${PREFIX} \
				 --enable-dummy \
				 --enable-ft2232_libftdi \
				 --enable-usb_blaster_libftdi \
				 --enable-ep93xx \
				 --enable-at91rm9200 \
				 --enable-presto_libftdi \
				 --enable-usbprog \
				 --enable-jlink \
				 --enable-vsllink \
				 --enable-rlink \
				 --enable-arm-jtag-ew
    log "Building openocd-${OOCD}"
    make ${MAKEFLAGS}
    install openocd-${OOCD} install
    cd ..
    log "Cleaning up openocd-${OOCD}"
    touch ${STAMPS}/openocd-${OOCD}.build
    rm -rf build/* ${OOCD}
fi
fi

if [ ${LIBSTM32_EN} != 0 ]; then
if [ ! -e ${STAMPS}/libcmsis-${LIBCMSIS}.build ]; then
    unpack libcmsis-${LIBCMSIS}
    cd libcmsis-${LIBCMSIS}
    log "Building libcmsis-${LIBCMSIS}"
    make arch_prefix=${TARGET} prefix=${PREFIX}
    install libcmsis-${LIBCMSIS} arch_prefix=${TARGET} prefix=${PREFIX} install
    cd ..
    log "Cleaning up libcmsis-${LIBCMSIS}"
    touch ${STAMPS}/libcmsis-${LIBCMSIS}.build
    rm -rf libcmsis-${LIBCMSIS}
fi

if [ ! -e ${STAMPS}/libstm32-${LIBSTM32}.build ]; then
    unpack libstm32-${LIBSTM32}
    cd libstm32-${LIBSTM32}
    log "Building libstm32-${LIBSTM32}"
    make arch_prefix=${TARGET} prefix=${PREFIX}
    install libstm32-${LIBSTM32} arch_prefix=${TARGET} prefix=${PREFIX} install
    cd ..
    log "Cleaning up libstm32-${LIBSTM32}"
    touch ${STAMPS}/libstm32-${LIBSTM32}.build
    rm -rf libstm32-${LIBSTM32}
fi

if [ ! -e ${STAMPS}/libstm32usb-${LIBSTM32USB}.build ]; then
    unpack libstm32usb-${LIBSTM32USB}
    cd libstm32usb-${LIBSTM32USB}
    log "Building libstm32usb-${LIBSTM32USB}"
    make arch_prefix=${TARGET} prefix=${PREFIX}
    install libstm32usb-${LIBSTM32USB} arch_prefix=${TARGET} prefix=${PREFIX} install
    cd ..
    log "Cleaning up libstm32usb-${LIBSTM32USB}"
    touch ${STAMPS}/libstm32usb-${LIBSTM32USB}.build
    rm -rf libstm32usb-${LIBSTM32USB}
fi
fi

if [ $LIBOPENSTM32_EN != 0 ]; then
if [ ! -e ${STAMPS}/libopenstm32-${LIBOPENSTM32}.build ]; then
    unpack libopenstm32-${LIBOPENSTM32}
    cd libopenstm32-${LIBOPENSTM32}
    log "Building libopenstm32-${LIBOPENSTM32}"
    make PREFIX=${TARGET} DESTDIR=${PREFIX}
    install libopenstm32-${LIBOPENSTM32} PREFIX=${TARGET} DESTDIR=${PREFIX} install
    cd ..
    log "Cleaning up libopenstm32-${LIBOPENSTM32}"
    touch ${STAMPS}/libopenstm32-${LIBOPENSTM32}.build
    rm -rf libopenstm32-${LIBOPENSTM32}
fi
fi