#!/bin/bash

set +v
set +e

############################################
#    Set configuration variables           #
############################################

GMP_VER=4.3.1
MPFR_VER=2.4.1
BINUTILS_VER=2.19.1
NEWLIB_VER=1.17.0
GCC_VER=4.4.1
INSIGHT_VER=6.8
ECOS_VER=3.0

GMP_LOC=ftp://ftp.gnu.org/gnu/gmp/
MPFR_LOC=http://www.mpfr.org/mpfr-current
BINUTILS_LOC=ftp://sourceware.org/pub/binutils/releases/
GCC_LOC=ftp://sourceware.org/pub/gcc/releases/gcc-${GCC_VER}
NEWLIB_LOC=ftp://sourceware.org/pub/newlib/
INSIGHT_LOC=ftp://sourceware.org/pub/insight/releases
ECOS_LOC=ftp://sourceware.org/pub/ecos/releases/ecos-${ECOS_VER}

############################################
#    Set platform variables                #
############################################

TARGET="arm-eabi"
TARGET_CPU="arm7tdmi"

############################################
#    Set directory variables               #
############################################

# AKA source directory
# ce repertoire contient ce script et les patches 
# qui sont les points de depart a la construction de l'environement
BASE=${PWD}

# AKA destination directory
# ce repertoire contient les archives telecharges depuis le net
# les dossier decompresses, les builds, etc.
WORK=${PWD}

# Archives 
DOWNLOADS=${BASE}/downloads
if [ ! -d ${DOWNLOADS} ]; then 
    mkdir ${DOWNLOADS}
fi

# Where the sources will be extracted
SOURCES=${WORK}/sources
if [ ! -d ${SOURCES} ]; then 
    mkdir ${SOURCES}
fi

# Where the sources will be compiled
BUILDS=${WORK}/builds
if [ ! -d ${BUILDS} ]; then 
    mkdir ${BUILDS}
fi

# Cross-binutils and cross-compilers will be placed here.
PREFIX=${WORK}/xtools
if [ ! -d ${PREFIX} ]; then 
    mkdir -p ${PREFIX}
fi

############################################
#    Set environment                       #
############################################
PATH=${PREFIX}/bin:${PATH}
export PATH

LC_ALL=POSIX
export LC_ALL

unset CFLAGS 

unset CXXFLAGS

############################################
#    Display settings                      #
############################################
info()
{
    echo "*******************************************************"
    echo " The directory containing tar.bz2 :"
    echo "  ${DOWNLOADS}"
    echo " The directory that will contain extracted sources :"
    echo "  ${SOURCES}"
    echo " The directory that will contain builds :"
    echo "  ${BUILDS}"
    echo " The directory that will contain the cross tools :"
    echo "  ${PREFIX}"
    echo " The TARGET is  ${TARGET}"
    echo "*******************************************************"
    env
    echo "*******************************************************"
    ulimit -a
    echo "*******************************************************"
}

############################################
# DOWNLOAD ROUTINE                         #
############################################
download()
{
    FILE_URL=$1
    FILE_NAME=`basename $1`

    # download
    if [ ! -f ${DOWNLOADS}/${FILE_NAME} ] ; then
        cd ${DOWNLOADS}
	wget -O ${FILE_NAME}.part ${FILE_URL} && \
        mv ${FILE_NAME}.part ${FILE_NAME}
    fi
}

############################################
# EXTRACT ROUTINE                          #
############################################
extract()
{
    FILE_NAME=$1

    cd ${SOURCES}
    tar -xvf ${DOWNLOADS}/${FILE_NAME}
}

############################################
#                                          #
############################################
install()
{
    # download
    if [ -f build.log.download.ok ] ;
    then
	rm build.log.download.ok
	download ${GMP_LOC}/gmp-${GMP_VER}.tar.bz2
	download ${MPFR_LOC}/mpfr-${MPFR_VER}.tar.bz2
	download ${BINUTILS_LOC}/binutils-${BINUTILS_VER}.tar.bz2
	download ${GCC_LOC}/gcc-core-${GCC_VER}.tar.bz2
	download ${GCC_LOC}/gcc-g++-${GCC_VER}.tar.bz2
	download ${NEWLIB_LOC}/newlib-${NEWLIB_VER}.tar.gz
	download ${INSIGHT_LOC}/insight-${INSIGHT_VER}.tar.bz2
	download ${ECOS_LOC}/ecos-${ECOS_VER}.i386linux.tar.bz2
	touch build.log.download.ok
    fi

    # extract
    if [ ! -f build.log.extract.ok ] ;
    then
	rm build.log.extract.ok
	extract gmp-${GMP_VER}.tar.bz2
	extract mpfr-${MPFR_VER}.tar.bz2
	extract binutils-${BINUTILS_VER}.tar.bz2
	extract gcc-core-${GCC_VER}.tar.bz2
	extract gcc-g++-${GCC_VER}.tar.bz2
	extract newlib-${NEWLIB_VER}.tar.gz
	extract insight-${INSIGHT_VER}.tar.bz2
	extract ecos-${ECOS_VER}.i386linux.tar.bz2

        # bug
        #patch ${SOURCES}/binutils-${BINUTILS_VER}/bfd/configure < ${BASE}/bfd-no_zlib.patch 
	patch ${SOURCES}/binutils-${BINUTILS_VER}/bfd/configure < ${BASE}/bfd-zlib.patch 

	touch build.log.extract.ok
    fi

    # make combined-tree
    if [ ! -f build.log.combined.ok ] ;
    then
	rm build.log.combined.ok
	rm -fr ${SOURCES}/combined
	cp -R ${SOURCES}/gcc-${GCC_VER} ${SOURCES}/combined
	ln -s ${SOURCES}/gmp-${GMP_VER} ${SOURCES}/combined/gmp
	ln -s ${SOURCES}/mpfr-${MPFR_VER} ${SOURCES}/combined/mpfr
	ln -s ${SOURCES}/binutils-${BINUTILS_VER}/bfd ${SOURCES}/combined/
	ln -s ${SOURCES}/binutils-${BINUTILS_VER}/binutils ${SOURCES}/combined/
	ln -s ${SOURCES}/binutils-${BINUTILS_VER}/gas ${SOURCES}/combined/
	ln -s ${SOURCES}/binutils-${BINUTILS_VER}/ld ${SOURCES}/combined/
	ln -s ${SOURCES}/binutils-${BINUTILS_VER}/opcodes ${SOURCES}/combined/
	ln -s ${SOURCES}/binutils-${BINUTILS_VER}/include/* ${SOURCES}/combined/include/
	ln -s ${SOURCES}/newlib-${NEWLIB_VER}/newlib ${SOURCES}/combined/
	ln -s ${SOURCES}/newlib-${NEWLIB_VER}/libgloss ${SOURCES}/combined/
	ln -s ${SOURCES}/insight-${INSIGHT_VER}/gdb ${SOURCES}/combined/
	ln -s ${SOURCES}/insight-${INSIGHT_VER}/itcl ${SOURCES}/combined/
	ln -s ${SOURCES}/insight-${INSIGHT_VER}/libgui ${SOURCES}/combined/
	ln -s ${SOURCES}/insight-${INSIGHT_VER}/readline ${SOURCES}/combined/
	ln -s ${SOURCES}/insight-${INSIGHT_VER}/sim ${SOURCES}/combined/
	ln -s ${SOURCES}/insight-${INSIGHT_VER}/tcl ${SOURCES}/combined/
	ln -s ${SOURCES}/insight-${INSIGHT_VER}/tk ${SOURCES}/combined/
	touch build.log.combined.ok
    fi

    # configure
    if [ ! -f build.log.configure.ok ] ;
    then
	rm build.log.configure.ok
	rm -fr ${BUILDS}/combined
	mkdir -p ${BUILDS}/combined
	cd ${BUILDS}/combined
	${SOURCES}/combined/configure \
            --prefix=${PREFIX} \
            --target=${TARGET} \
            --with-cpu=${TARGET_CPU} \
            --with-newlib \
            --disable-shared \
            --disable-nls \
            --disable-libgomp \
            --disable-libmudflap \
            --disable-libssp \
            --enable-languages=c,c++ \
            -v
	touch build.log.configure.ok
    fi

    # build and install
    if [ ! -f build.log.make.ok ] ;
    then
	rm build.log.make.ok
	make && make install
	touch build.log.make.ok
    fi

#    mkdir -p ${BUILDS}/insight-${INSIGHT_VER}/gdb/gdbserver
#    cd ${BUILDS}/insight-${INSIGHT_VER}/gdb/gdbserver
#    ASFLAGS="${TARGET_ASFLAGS}" \
#	CFLAGS="${TARGET_CFLAGS}" \
#	${SOURCES}/insight-${INSIGHT_VER}/gdb/gdbserver/configure \
#	--prefix=${SYSROOT} \
#	--host=${TARGET} \
#	--build=${HOST}
#    make
#    make install

}




############################################
#    PRISE EN CHARGE PARAMETRES            #
############################################
if [ ! "$1" ] 
then
    echo $"Usage: $0 {install|clean}"
    exit 1
fi

{
while [ "$1" ]; do
    case "$1" in
	install)
	    info
	    install
	    ;;
	clean)
	    rm -fr ${SOURCES}
	    rm -fr ${BUILDS}
	    rm -fr ${PREFIX}
	    rm -fr build.log*
	    rm -fr *~
	    ;;
    esac
    shift
done
} 2>&1 | tee build.log

exit 0