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# Force failed command to exit this shell - all commands must report success
set -e
echo
echo



#------------------------------------------------------------------------------
# Takes $1 and removes all relative paths (. and ..) from it.  The cleaned up
# directory is written to stdout.
#------------------------------------------------------------------------------
function cleanup_dir
{
    DIR_PARTS=`echo $1 | sed "s|/| |g"`
    
    CLEANUP_DIR=""
    for PART in ${DIR_PARTS}; do
        if [ "${PART}" != "." ]; then
        
            if [ "${PART}" == ".." ]; then
                CLEANUP_DIR=`echo "${CLEANUP_DIR}" | sed "s|/[^/]*$||"`
            else
                CLEANUP_DIR="${CLEANUP_DIR}/${PART}"
            fi
        fi
    done
    
    echo ${CLEANUP_DIR}
} 




#------------------------------------------------------------------------------
# Extract arguments - order not important except that the first argument is
# the launch script
#------------------------------------------------------------------------------
unset CLEAN
unset DOWNLOAD_PKG
unset DOWNLOAD_PKG_AUTO
unset XGCC_IN_PATH
unset DEBIAN_PACKAGE
unset APPLY_PATCHES
unset APPLY_MODS
unset CONFIG_VARIENT
for arg in "$@" ; do
    val=${arg##*=}
    tag=${arg%%=*}
    case $tag in
        -clean)                 CLEAN=1;;
        -XGccInPath)            XGCC_IN_PATH=1;;
        -ShellBuild)            SHELL_BUILD="$val";;
        -BuildName)             BUILD_NAME=$val;;
        -BuildVersion)          BUILD_VERSION=$val;;
        -Platform)              PLATFORM=$val;;
        -Type)                  TYPE=$val;;
        -Arch)                  ARCH=$val;;
        -MachType)              MACHTYPE=$val;;
        -BuildRoot)             BUILD_ROOT=$val;;
        -InterfaceDir)          INTERFACE_DIR=$val;;
        -LocalDir)              LOCAL_DIR=$val;;
        -BinDir)                BIN_DIR=$val;;
        -LibDir)                LIB_DIR=$val;;
        -ObjDir)                OBJ_DIR=$val;;
        -PackageBinDir)         PKG_BIN_DIR=$val;;
        -PackageIncDir)         PKG_INC_DIR=$val;;
        -PackageLibDir)         PKG_LIB_DIR=$val;;
        -PackagePkgDir)         PKG_PKG_DIR=$val;;
        -PackageToolDir)        PKG_TOOL_DIR=$val;;
        -PackageToolBin)        PKG_TOOL_BIN_DIR=$val;;
        -PackageToolScript)     PKG_TOOL_SCRIPT_DIR=$val;;
        -PackageDir)            PKG_DIR=$val;;
        -CompilerPath)          COMPILER_DIR="$val";;
        -DownloadPkg)           DOWNLOAD_PKG="$val";;
        -DebianPackage)         DEBIAN_PACKAGE=$val;;
        -ApplyPatches)          APPLY_PATCHES=1;;
        -ApplyMods)             APPLY_MODS=1;;
        -ConfigVarient)         CONFIG_VARIENT=$val;;
        *)                      echo "Unknown tag: $tag=$val"
    esac
done

if [ "${DOWNLOAD_PKG}" == "-DownloadPkg" ]; then
    DOWNLOAD_PKG_NAME=${BUILD_NAME}
    DOWNLOAD_PKG_VER=`echo ${BUILD_VERSION} | sed "s|\.[0-9]\+\.cots||"`
    DOWNLOAD_PKG=${DOWNLOAD_PKG_NAME}-${DOWNLOAD_PKG_VER}
else
    DOWNLOAD_PKG_VER=`echo ${DOWNLOAD_PKG} | sed "s|.*-||"`    
    DOWNLOAD_PKG_NAME=`echo ${DOWNLOAD_PKG} | sed "s|-${DOWNLOAD_PKG_VER}||"`    
fi


#------------------------------------------------------------------------------
# Dump JATS information for debugging purposes
#------------------------------------------------------------------------------
echo "================================================================================"
echo "   JATS SUPPLIED FIELDS"
echo "================================================================================"
echo " ShellBuild     = ${SHELL_BUILD}"
echo " BuildName      = ${BUILD_NAME} ${BUILD_VERSION}"
echo " Platform       = ${PLATFORM}"
echo " Type           = ${TYPE}"
echo " Arch           = ${ARCH}"
echo " MachType       = ${MACHTYPE}"
echo " BuildRoot      = ${BUILD_ROOT}"
#echo " InterfaceDir   = ${INTERFACE_DIR}"
#echo " LocalDir       = ${LOCAL_DIR}"
if [ ${DOWNLOAD_PKG} ]; then
    echo " DownloadPkg    = ${DOWNLOAD_PKG}"
fi    
echo " BinDir         = ${BIN_DIR}"
echo " LibDir         = ${LIB_DIR}"
echo " ObjDir         = ${OBJ_DIR}"
echo " PkgDir         = ${PKG_DIR}"
echo " PackageBinDir  = ${PKG_BIN_DIR}"
echo " PackageIncDir  = ${PKG_INC_DIR}"
echo " PackageLibDir  = ${PKG_LIB_DIR}"
echo " PackagePkgDir  = ${PKG_PKG_DIR}"
echo " CompilerDir    = ${COMPILER_DIR}"
echo "================================================================================"
echo
echo


#------------------------------------------------------------------------------
# Determine host and build environments
#------------------------------------------------------------------------------
case ${MACHTYPE} in
    linux_i386)  
        COMPILE_BUILD="i386-cross-linux-gnu"
        ;;
    *)      
        echo "Unknown MACHTYPE=${MACHTYPE}"
        exit 1
        ;;
esac

case ${ARCH} in
    *603E*|*powerpc*)  
        COMPILE_HOST="powerpc-603e-linux-gnu"
        LINUX_HOST_ARCH=powerpc
        ;;

    ARMV9*)  
        COMPILE_HOST="arm-9tdmi-linux-gnu"
        ;;

    *I386*)
        if [ "${PLATFORM}" == "LINUX_I386" ]; then
            COMPILE_HOST="i386-cross-linux-gnu"
        else
            COMPILE_HOST="i586-unknown-linux-gnu"
        fi
        LINUX_HOST_ARCH=x86
        ;;

    *)      
        echo "Unknown ARCH=${ARCH}"
        exit 1
        ;;
esac

# Setup the location of the cross compiler
if [ "${COMPILE_HOST}" == "i386-redhat-linux" ] || [ "${COMPILER_DIR}" == "gcc" ]; then
    XGCC_BASE_DIR=
    XGCC_DIR=
    XGCC=gcc
else
    XGCC_BASE_DIR=`echo ${COMPILER_DIR} | sed 's|/[^/]*/[^/]*$||'`
    XGCC_BASE_DIR=`cleanup_dir ${XGCC_BASE_DIR}`
    XGCC_DIR=${XGCC_BASE_DIR}/${COMPILE_HOST}
    XGCC=${XGCC_DIR}/bin/gcc
fi

# Determine the location of the generated files
CWD=`pwd`
BIN_DIR=`cleanup_dir ${CWD}/${BIN_DIR}`
LIB_DIR=`cleanup_dir ${CWD}/${LIB_DIR}`
OBJ_DIR=`cleanup_dir ${CWD}/${OBJ_DIR}`
PKG_DIR=`cleanup_dir ${CWD}/${PKG_DIR}`
PKG_BIN_DIR=`cleanup_dir ${CWD}/${PKG_BIN_DIR}`
PKG_INC_DIR=`cleanup_dir ${CWD}/${PKG_INC_DIR}`
PKG_LIB_DIR=`cleanup_dir ${CWD}/${PKG_LIB_DIR}`
PKG_PKG_DIR=`cleanup_dir ${CWD}/${PKG_PKG_DIR}`

PKG_TOOL_DIR=`cleanup_dir ${CWD}/${PKG_TOOL_DIR}`
PKG_TOOL_BIN_DIR=`cleanup_dir ${CWD}/${PKG_TOOL_BIN_DIR}`
PKG_TOOL_SCRIPT_DIR=`cleanup_dir ${CWD}/${PKG_TOOL_SCRIPT_DIR}`

BASE_DIR=`cleanup_dir ${CWD}/${BUILD_ROOT}`
INTERFACE_DIR=`cleanup_dir ${CWD}/${INTERFACE_DIR}`
LOCAL_DIR=`cleanup_dir ${CWD}/${LOCAL_DIR}`
LCL_SRC_DIR=${BASE_DIR}/src
SHARE_SRC_DIR=${LCL_SRC_DIR}
SHARE_BASE_DIR=${BASE_DIR}

DEB_PKG_DIR=${LIB_DIR}
AFC_DIR=${DEB_PKG_DIR}/afc
AFC_BIN_DIR=${AFC_DIR}/bin
AFC_LIB_DIR=${AFC_DIR}/lib
AFC_SHARE_DIR=${AFC_DIR}/share

DEB_DIR=`cleanup_dir ${CWD}/${DEBIAN_PACKAGE}`

# Find the launch script
LAUNCH_SCRIPT=`cleanup_dir ${LCL_SRC_DIR}/${SHELL_BUILD}`

if [ ! -f ${LAUNCH_SCRIPT} ]; then
    echo "Specified shell build script ${LAUNCH_SCRIPT} does not exist."
    exit 1
fi

if [ ${DOWNLOAD_PKG} ]; then

    # This is the set of available download directories, consisting of downloads/
    # and a download directory that is offset from the location of the build
    # script src directory.
    unset TAR_DECOMP_ARG
    TMP=`echo ${SHELL_BUILD} | sed "s|/src/.*||"`
    TMP=`cleanup_dir ${CWD}/${TMP}`
    DOWNLOAD_DIRS="${TMP} ${BASE_DIR}"
    for DDIR in ${DOWNLOAD_DIRS}; do
        TMP=${DDIR}/downloads/${DOWNLOAD_PKG}.tar.bz2
        if [ -e ${TMP} ]; then
            TARBALL_FILE=${TMP}
            SHARE_SRC_DIR=${DDIR}/src
            SHARE_BASE_DIR=${DDIR}
            TAR_DECOMP_ARG=j
        else
            TMP=${DDIR}/downloads/${DOWNLOAD_PKG}.tar.gz
            if [ -e ${TMP} ]; then
                TARBALL_FILE=${TMP}
                SHARE_SRC_DIR=${DDIR}/src
                SHARE_BASE_DIR=${DDIR}
                TAR_DECOMP_ARG=z
            else
                TMP=${DDIR}/downloads/${DOWNLOAD_PKG}.tgz
                if [ -e ${TMP} ]; then
                    TARBALL_FILE=${TMP}
                    SHARE_SRC_DIR=${DDIR}/src
                    SHARE_BASE_DIR=${DDIR}
                    TAR_DECOMP_ARG=z
                fi
            fi
        fi    
    done
    if [ "${TAR_DECOMP_ARG}" == "" ]; then
        echo "Could not find download file ${DOWNLOAD_PKG}.<tar.gz|tar.bz2|tgz> in any of { ${DOWNLOAD_DIRS} }"
        exit 1
    fi
    WORK_DIR=${LCL_SRC_DIR}/${DOWNLOAD_PKG}
else
    WORK_DIR=${LCL_SRC_DIR}/work
fi

#
#   Extend compiler and linker search paths to access data within
#   packages imported via BuildPkgArchive
#
#   Include the packageing directory - its used for builds that
#   build multiple packages.
#
#   Only include paths that exist
#
INCLUDE=
LIBPATH=

DJOIN=""
DLIST="
${PKG_INC_DIR}
${LOCAL_DIR}/inc
${INTERFACE_DIR}/include/${PLATFORM}
${INTERFACE_DIR}/include
"
for dtest in ${DLIST} ; do
    if [ -d $dtest ] ; then
        INCLUDE="${INCLUDE}${DJOIN}-I$dtest"
        DJOIN=" "
    fi
done

DJOIN=""
DLIST="
${PKG_LIB_DIR}
${LOCAL_DIR}/lib/${PLATFORM}
${INTERFACE_DIR}/lib/${PLATFORM}
"
for dtest in ${DLIST} ; do
    if [ -d $dtest ] ; then
        LIBPATH="${LIBPATH}${DJOIN}-L$dtest"
        DJOIN=" "
    fi
done

# Dump configuration
echo "================================================================================"
echo "   BUILD CONFIGURATION"
echo "================================================================================"
echo " Compile Host   = ${COMPILE_HOST}"
echo " Compile Build  = ${COMPILE_BUILD}"
echo " XGCC Base Dir  = ${XGCC_BASE_DIR}"
echo " XGCC Dir       = ${XGCC_DIR}"
echo " XGCC           = ${XGCC}"
echo " Base Dir       = ${BASE_DIR}"
if [ ${DOWNLOAD_PKG} ]; then
    echo " Tarball File   = ${TARBALL_FILE}"
    echo " Working Dir    = ${WORK_DIR}"
fi  
unset AFTER_FIRST
for INC in ${INCLUDE}; do
    if [ ${AFTER_FIRST} ]; then
        echo "                  ${INC}"
    else
        echo " Includes       = ${INC}"
        AFTER_FIRST=1
    fi
done
unset AFTER_FIRST
for LIB in ${LIBPATH}; do
    if [ ${AFTER_FIRST} ]; then
        echo "                  ${LIB}"
    else
        echo " Library Path   = ${LIB}"
        AFTER_FIRST=1
    fi
done
echo " Debian Package = ${DEB_PKG_DIR}"
echo " Launch Script  = ${LAUNCH_SCRIPT}"
echo "================================================================================"
echo
echo

# Prepare the environment
echo " --> Preparing environment"


LIBTOOL=libtool
export LIBTOOL

unset CC
unset CXX
unset CPP
unset CPPFLAGS
unset LD_LIBRARY_PATH
export CC CXX CPP CPPFLAGS LD_LIBRARY_PATH

unset MAKE
unset MAKEFLAGS
unset MAKEOVERRIDES
unset MAKELEVEL
export CFLAGS="${CFLAGS} ${INCLUDE}"
export CXXFLAGS="${CXXFLAGS} ${INCLUDE}"
export CCFLAGS="${CCFLAGS} ${INCLUDE}"
export LDFLAGS="${LDFLAGS} ${LIBPATH}"

if [ ${XGCC_IN_PATH} ]; then
    export PATH="${XGCC_DIR}/bin:${PATH}"
else
    export PATH="${XGCC_BASE_DIR}/bin:${PATH}"
fi


#
#   Clean up request
#   No building - just a clean of previous builds
#
if [ ${CLEAN} ]; then
    if [ ${DOWNLOAD_PKG} ]; then
        echo " --> Cleaning generated files"
        cd ${BASE_DIR}
        rm -fr ${WORK_DIR}
    fi        
    
    echo " --> Deleting binary, object, and library directories"
    rm -fr ${BIN_DIR}
    rm -fr ${LIB_DIR}
    rm -fr ${OBJ_DIR}

    if [ ${DEBIAN_PACKAGE} ]; then
        echo " --> Deleting Debian Build Files "
        rm -fr ${DEB_DIR}
    fi
    
    exit 0
fi


if [ ${DOWNLOAD_PKG} ]; then
    echo " --> Deleting existing build objects directory"
    rm -fr ${WORK_DIR}
fi    


echo " --> Creating package directories"
mkdir -p ${PKG_BIN_DIR}
mkdir -p ${PKG_INC_DIR}
mkdir -p ${PKG_LIB_DIR}
mkdir -p ${PKG_PKG_DIR}
mkdir -p ${AFC_DIR}
mkdir -p ${AFC_BIN_DIR}
mkdir -p ${AFC_LIB_DIR}
mkdir -p ${AFC_SHARE_DIR}
mkdir -p ${PKG_TOOL_DIR}
mkdir -p ${PKG_TOOL_BIN_DIR}
mkdir -p ${PKG_TOOL_SCRIPT_DIR}


if [ ${DOWNLOAD_PKG} ]; then
    echo " --> Extracting ${DOWNLOAD_PKG}"
    cd ${LCL_SRC_DIR}
    tar -x${TAR_DECOMP_ARG}pf ${TARBALL_FILE}
    
    cd ${WORK_DIR}
    PATCHES_DIR=${SHARE_BASE_DIR}/patches
    if [ -d ${PATCHES_DIR} ]; then
        PATCHES=`cd ${PATCHES_DIR} && find . -name "*.patch" | sort`
        if [ "${PATCHES}" != "" ]; then
            echo " --> Apply external patches"
            for PATCH in ${PATCHES}; do
                if patch -p1 < ${PATCHES_DIR}/${PATCH}; then
                    echo "Applied patch ${PATCH}"
                    echo ""
                else
                    echo "Patch ${PATCH} failed"
                    exit 1
                fi
            done    
        fi
    fi
    
    cd ${WORK_DIR}
    MODS_DIR=${SHARE_BASE_DIR}/${DOWNLOAD_PKG_NAME}_${DOWNLOAD_PKG_VER}_mods
    if [ -d ${MODS_DIR} ]; then
        echo " --> Applying modifications"
        cp -fr ${MODS_DIR}/* .
        ERG_CONFIG=${MODS_DIR}/ERG.config
        if [ -f ${ERG_CONFIG} ]; then
            cp -fr ${ERG_CONFIG} .config
        fi
    fi

    cd ${WORK_DIR}
fi

#
#   Source the users script
#   This is processed in the context of this script
#
source ${LAUNCH_SCRIPT}


if [ ${DEBIAN_PACKAGE} ]; then 
    echo " --> Creating Debian packaging scripts"
    unset TOOL_DIR
    for DIR in `echo ${PATH} | sed "s|\:| |g"`; do
        if [ -f ${DIR}/debbuild.pl ]; then
            TOOL_DIR=`cleanup_dir ${DIR}`
        fi
    done
    if [ ${TOOL_DIR} ]; then
        DEBBUILD_PL=${TOOL_DIR}/debbuild.pl
        echo "      - Found ${DEBBUILD_PL}"

        rm -fr ${DEB_DIR}
        mkdir -p ${DEB_DIR}

        # Replace TAGS in the debbuild.pl file
        DEB_DESC="${BUILD_NAME} ${BUILD_VERSION} for ${PLATFORM}"
        cat ${DEBBUILD_PL} | sed "-es|TAG_DESCRIPTION|${DEB_DESC}|" "-es|TAG_POSTINSTALL|${DEB_DIR}/postinstall|" > ${DEB_DIR}/debbuild.pl
        cp ${TOOL_DIR}/postinstall ${DEB_DIR}/postinstall
    else
        echo "ERROR: Cannot find debbuild.pl in the PATH"
        exit 1
    fi
fi    


echo " --> Removing unnecesary files resulting from the make install"
DEL_FILES=`find ${PKG_LIB_DIR} -type f -name '*.la'`
for FILE in ${DEL_FILES}; do
        echo "      - Deleting ${FILE}"
        rm -f ${FILE}
done

echo " --> Cleaning up empty directories"
# Deletes directory $1 if it does not contain any other files or directories
function rmdir_empty()
{
    # -A = do not list . and ..
    # -Q = enclose entry names in double quotes
    # -l = list one file per line
    # -F = appends each directory with a '/' 
    DIRS=`ls -A -Q -l -F "$1" | grep "\".*\"\/" | sed "s|.* \"||" | sed "s|\"\/||"`
    for DIR in ${DIRS}; do
        rmdir_empty $1/${DIR}
    done
    
    LS=`ls -A -Q -l -F "$1" | grep "\"" | sed "s|^.* \"||" | sed "s|\".*||"`
    if [ "${LS}" == "" ]; then
        rmdir $1
    fi
    
}
rmdir_empty ${DEB_PKG_DIR}
rmdir_empty ${BASE_DIR}/pkg

echo " --> End of ShellBuild"