#!/bin/bash

###############################################

#

# Input environment variables

#

# PLATFORM         - target platform (linux or windows)

# ARCH             - bits (32 or 64)

# NATIVE_PLATFORM  - folder name for store compiled utilities for build-time (debian, fedora, etc)

# NATIVE_ARCH      - ^^^ bits (32 or 64)

# THREADS          - amount of simultaneous threads for build process

# PACKET_BUILD_DIR - output directory (optional)

#

###############################################

# check options

if [ -z "$NATIVE_PLATFORM" ]; then

    NATIVE_PLATFORM="default"

fi

if [ -z "$NATIVE_ARCH" ]; then

    NATIVE_ARCH=`uname -m`

    if [ "$NATIVE_ARCH" = "x86_64" ]; then

        NATIVE_ARCH="64"

    elif [ "$NATIVE_ARCH" = "i686" ]; then

        NATIVE_ARCH="32"

    fi

fi

if [ -z "$TARGET_PLATFORM" ]; then

    TARGET_PLATFORM="$NATIVE_PLATFORM"

fi

if [ -z "$ARCH" ]; then

    ARCH="$NATIVE_ARCH"

fi

if [ -z "$THREADS" ]; then

    THREADS=8

fi

export NATIVE_PLATFORM

export NATIVE_ARCH

export PLATFORM

export ARCH

export THREADS

# root

ROOT_DIR=$(cd `dirname "$0"`; pwd)

ROOT_DIR=`dirname "$ROOT_DIR"`

ROOT_DIR=`dirname "$ROOT_DIR"`

export ROOT_DIR

# dirs

export SCRIPT_DIR=$ROOT_DIR/script

export COMMON_SCRIPT_DIR=$SCRIPT_DIR/common

export INCLUDE_SCRIPT_DIR=$SCRIPT_DIR/include

export PACKET_SCRIPT_DIR=$SCRIPT_DIR/packet

if [ -z "$PACKET_BUILD_DIR" ]; then

	export PACKET_BUILD_DIR=$ROOT_DIR/packet

fi

export PACKET_DIR=$PACKET_BUILD_DIR/$PLATFORM-$ARCH

export NATIVE_PACKET_DIR=$PACKET_BUILD_DIR/$NATIVE_PLATFORM-$NATIVE_ARCH-native

# toolchain

export TOOLCHAIN_SCRIPT_DIR=$SCRIPT_DIR/toolchain

export NATIVE_TOOLCHAIN_SCRIPT="$TOOLCHAIN_SCRIPT_DIR/none.sh"

export TOOLCHAIN_SCRIPT="$TOOLCHAIN_SCRIPT_DIR/$PLATFORM-$ARCH.sh"

if [ ! -f "$TOOLCHAIN_SCRIPT" ]; then

    TOOLCHAIN_SCRIPT=$NATIVE_TOOLCHAIN_SCRIPT

fi

# work vars

IS_NATIVE=

DRY_RUN=

FORCE=

CLEAN_BEFORE_DO=

NO_CHECK_DEPS=

declare -A COMPLETION_STATUS

###############################################

#

# Fairy Tale

# 

# Once upon time in faraway...

#

# Function dependency:

#

# 1.                 download 

#                     |

# 2.                 unpack

#                     |

#                     | env^

#                     |  |

# 3.                  | envdeps 

#                     | | | |

#      env^^          | | | |

#       |             | | | |

#       | env_native^ | | | |

#       |  |          | | | |

# 4.   envdeps_native | | | |

#       |         | | | | | |

# 5.    |         | build | |

#       |         |  |  | | |

# 7.    |         --install |    (you see the direct connection 'build' with 'license', trust me)

#       |            | || | |

# 8.    |            | || env

#       |            | || | |

#       |            | || | envdeps*

#       |            | || |

#       |            | || envdeps_native**

#       |            | ||

# 9.   env_native    | ||

#       |            | ||

#    envdeps_native* | ||

#                    | ||

# 10.                | license

#                    | |

#                    | |   env_release^

#                    | |    | 

# 11.                | |   envdeps_release

#                    | |    |       | 

# 12.               install_release |

#                           |       |

# 13.                      env_release

#                           |

#                          envdeps_release*

#

###############################################

FUNC_DEPS_download=""

FUNC_DEPS_unpack="download"

FUNC_DEPS_envdeps="-env"

FUNC_DEPS_envdeps_native="--env -env_native"

FUNC_DEPS_build="envdeps envdeps_native unpack"

FUNC_DEPS_install="envdeps envdeps_native build"

FUNC_DEPS_env="envdeps install"

FUNC_DEPS_env_native="envdeps_native"

FUNC_DEPS_license="build install"

FUNC_DEPS_envdeps_release="-env_release"

FUNC_DEPS_install_release="envdeps_release install license"

FUNC_DEPS_env_release="envdeps_release install_release"

# helpers

source "$COMMON_SCRIPT_DIR/helpers.sh"

# initial system vars

unset VARS_TO_RESTORE

vars_clear "TC_"

vars_clear "INITIAL_"

vars_backup "INITIAL_"

# internal functions

message() {

    local MESSAGE=$1

    echo " ------ $MESSAGE"

}

try_do_nothing() {

	if [ -z "$DRY_RUN" ]; then

		return 1

	fi

	set_done $1 $2

}

set_done() {

    local PACKET=$1

    local FUNC=$2

	local COMPLETION_KEY="$PLATFORM:$ARCH:$PACKET:$FUNC"

	if [ -z "$DRY_RUN" ]; then

		touch "$PACKET_DIR/$PACKET/$FUNC.done"

	fi

	COMPLETION_STATUS[$COMPLETION_KEY]=complete

}

set_undone_silent() {

    local PACKET=$1

    local FUNC=$2

	local COMPLETION_KEY="$PLATFORM:$ARCH:$PACKET:$FUNC"

	if [ -z "$DRY_RUN" ]; then

    	rm -f $PACKET_DIR/$PACKET/$FUNC.*.done

		rm -f "$PACKET_DIR/$PACKET/$FUNC.done"

	fi

	COMPLETION_STATUS[$COMPLETION_KEY]=incomplete

}

set_undone() {

    local PACKET=$1

    local FUNC=$2

	message "$PACKET set_undone $FUNC"

	set_undone_silent $PACKET $FUNC

}

clean_packet_directory_silent() {

    local PACKET=$1

    local FUNC=$2

	set_undone_silent $PACKET $FUNC

    try_do_nothing $PACKET $FUNC && return 0

    rm -rf "$PACKET_DIR/$PACKET/$FUNC"

}

clean_packet_directory() {

    local PACKET=$1

    local FUNC=$2

	message "$PACKET clean $FUNC"

	clean_packet_directory_silent $PACKET $FUNC

}

check_packet_function() {

    local PACKET=$1

    local FUNC=$2

	if [ ! -z "$FORCE" ]; then

		return 1

	fi

    if [ ! -f "$PACKET_DIR/$PACKET/$FUNC.done" ]; then

        return 1

    fi

}

prepare_build() {

    if ! copy "$UNPACK_PACKET_DIR" "$BUILD_PACKET_DIR"; then

        return 1

    fi

}

prepare_install() {

    if ls $BUILD_PACKET_DIR/version-* 1> /dev/null 2>&1; then

        cp --remove-destination $BUILD_PACKET_DIR/version-* "$INSTALL_PACKET_DIR/" || true

    fi

}

prepare_license() {

    rm -f "$LICENSE_PACKET_DIR/"*

}

prepare_install_release() {

    if ls $INSTALL_PACKET_DIR/version-* 1> /dev/null 2>&1; then

        cp --remove-destination $INSTALL_PACKET_DIR/version-* "$INSTALL_RELEASE_PACKET_DIR/" || true

    fi

    mkdir -p "$INSTALL_RELEASE_PACKET_DIR/license" || return 1

    copy "$LICENSE_PACKET_DIR" "$INSTALL_RELEASE_PACKET_DIR/license" || return 1

}

set_environment_vars() {

    # restore env

    for VAR in $VARS_TO_RESTORE; do

        VAR_FROM="INITIAL_$VAR"

        if [ -z ${!VAR_FROM+x} ]; then

            unset $VAR

        else

            eval export $VAR='${!VAR_FROM}'

        fi

    done

    # set toolchain env

    VARS_TO_RESTORE=

    for VAR in $(allvars); do

        if [[ "$VAR" = TC_* ]]; then

            VARS_TO_RESTORE="$VARS_TO_RESTORE ${VAR#TC_}"

        fi

    done

    vars_restore "TC_" "export"

    # set env

    export NAME=$1

    export CURRENT_PACKET_DIR="$PACKET_DIR/$NAME"

	export FILES_PACKET_DIR="$PACKET_SCRIPT_DIR/$NAME.files"

    export DOWNLOAD_PACKET_DIR="$CURRENT_PACKET_DIR/download"

    export UNPACK_PACKET_DIR="$CURRENT_PACKET_DIR/unpack"

    export ENVDEPS_PACKET_DIR="$CURRENT_PACKET_DIR/envdeps"

    export ENVDEPS_NATIVE_PACKET_DIR="$CURRENT_PACKET_DIR/envdeps_native"

    export BUILD_PACKET_DIR="$CURRENT_PACKET_DIR/build"

    export LICENSE_PACKET_DIR="$CURRENT_PACKET_DIR/license"

    export INSTALL_PACKET_DIR="$CURRENT_PACKET_DIR/install"

    export INSTALL_RELEASE_PACKET_DIR="$CURRENT_PACKET_DIR/install_release"

    export ENV_PACKET_DIR="$CURRENT_PACKET_DIR/env"

    export ENV_NATIVE_PACKET_DIR="$CURRENT_PACKET_DIR/env_native"

    export ENVDEPS_RELEASE_PACKET_DIR="$CURRENT_PACKET_DIR/envdeps_release"

    export ENV_RELEASE_PACKET_DIR="$CURRENT_PACKET_DIR/env_release"

    export PATH="\

$ENVDEPS_NATIVE_PACKET_DIR/bin:\

$ENV_NATIVE_PACKET_DIR/bin:\

$ENVDEPS_PACKET_DIR/bin:\

$ENV_PACKET_DIR/bin:\

$TC_PATH"

    export LD_LIBRARY_PATH="\

$ENVDEPS_NATIVE_PACKET_DIR/lib:\

$ENVDEPS_NATIVE_PACKET_DIR/lib64\

$ENV_NATIVE_PACKET_DIR/lib:\

$ENV_NATIVE_PACKET_DIR/lib64:\

$ENVDEPS_PACKET_DIR/lib:\

$ENVDEPS_PACKET_DIR/lib64:\

$ENV_PACKET_DIR/lib:\

$ENV_PACKET_DIR/lib64:\

$TC_LD_LIBRARY_PATH"

    export LDFLAGS="-L$ENVDEPS_PACKET_DIR/lib -L$ENVDEPS_PACKET_DIR/lib64 $TC_LDFLAGS"

    export CFLAGS="-I$ENVDEPS_PACKET_DIR/include $TC_CFLAGS"

    export CPPFLAGS="-I$ENVDEPS_PACKET_DIR/include $TC_CPPFLAGS"

    export CXXFLAGS="-I$ENVDEPS_PACKET_DIR/include $TC_CXXFLAGS"

    export PKG_CONFIG_PATH="$ENVDEPS_PACKET_DIR/lib/pkgconfig:$ENVDEPS_PACKET_DIR/share/pkgconfig:$TC_PKG_CONFIG_PATH"

    export PKG_CONFIG_LIBDIR="$ENVDEPS_PACKET_DIR/lib:$TC_PKG_CONFIG_LIBDIR"

    export PKG_CONFIG_SYSROOT_DIR="/"

    export XDG_DATA_DIRS="$ENVDEPS_PACKET_DIR/share:$TC_XDG_DATA_DIRS"

    export ACLOCAL_PATH="$ENVDEPS_PACKET_DIR/share/aclocal:$TC_ACLOCAL_PATH"

    export CMAKE_INCLUDE_PATH="$ENVDEPS_PACKET_DIR/include:$TC_CMAKE_INCLUDE_PATH"  

    export CMAKE_LIBRARY_PATH="$ENVDEPS_PACKET_DIR/lib:$ENVDEPS_PACKET_DIR/lib64:$TC_CMAKE_LIBRARY_PATH"  

}

call_packet_function() {

    local NAME=$1

    local FUNC=$2

    local PREPARE_FUNC=$3

    local FINALIZE_FUNC=$4

    local COMPARE_RESULTS=$5

    set_environment_vars $NAME

    local FUNC_NAME=pk$FUNC

    local FUNC_CURRENT_PACKET_DIR=$CURRENT_PACKET_DIR/$FUNC

    message "$NAME $FUNC"

    try_do_nothing $NAME $FUNC && return 0

	echo "${DRY_RUN_DONE[@]}"

	local PREV_HASH=

	if [ "$COMPARE_RESULTS" = "compare_results" ]; then

		if check_packet_function $NAME $FUNC; then

			PREV_HASH=`sha512dir "$FUNC_CURRENT_PACKET_DIR"` 

			[ ! $? -eq 0 ] && return 1

		fi

    else

   		set_undone_silent $NAME $FUNC

	fi

    mkdir -p $FUNC_CURRENT_PACKET_DIR

    cd $FUNC_CURRENT_PACKET_DIR

	source $INCLUDE_SCRIPT_DIR/inc-pkall-none.sh

    [ ! $? -eq 0 ] && return 1

    source "$PACKET_SCRIPT_DIR/$NAME.sh"

    [ ! $? -eq 0 ] && return 1

    if [ ! -z "$PREPARE_FUNC" ]; then

        if ! "$PREPARE_FUNC"; then

            return 1

        fi

    fi

    if ! "$FUNC_NAME"; then

        return 1

    fi

    if [ ! -z "$FINALIZE_FUNC" ]; then

        if ! "$FINALIZE_FUNC"; then

            return 1

        fi

    fi

	if [ ! -z "$PREV_HASH" ]; then

		local HASH=`sha512dir "$FUNC_CURRENT_PACKET_DIR"` 

		[ ! $? -eq 0 ] && return 1

		if [ "$HASH" = "$PREV_HASH" ]; then

			message "$NAME $FUNC - not changed"

			return 0

		fi

	fi

    set_done $NAME $FUNC

}

foreach_deps() {

    local NAME=$1

    local FUNC=$2

    local RECURSIVE=$3

    local NATIVE=$4

    local WAS_NATIVE=$IS_NATIVE

	source $INCLUDE_SCRIPT_DIR/inc-pkall-none.sh

    [ ! $? -eq 0 ] && return 1

    source "$PACKET_SCRIPT_DIR/$NAME.sh"

    [ ! $? -eq 0 ] && return 1

    if [ ! -z "$WAS_NATIVE" ]; then

        DEPS="$DEPS $DEPS_NATIVE"

        DEPS_NATIVE=

    fi

    local CURRENT_DEPS=$DEPS

    local CURRENT_DEPS_NATIVE=$DEPS_NATIVE

    local PROCESS_SELF=""

    if [ "$NATIVE" = "native" ]; then

        CURRENT_DEPS=$DEPS_NATIVE

        if [ ! -z "$TC_HOST" ]; then

            PROCESS_SELF="process_self"

        fi

    fi

    for DEP in $CURRENT_DEPS; do

        if [ ! -z "$DEP" ] && [ "$DEP" != "$NAME" -o "$PROCESS_SELF" = "process_self" ]; then

            local DEP_LOCAL=$DEP 

            if [ "$RECURSIVE" = "recursive" ]; then

                if ! foreach_deps "$DEP_LOCAL" "$FUNC" "$RECURSIVE"; then

                    return 1

                fi

            fi

            if ! "$FUNC" "$DEP_LOCAL" "$NAME"; then

                return 1

            fi

        fi

    done

    if [ "$RECURSIVE" = "recursive" ]; then

        for DEP in $CURRENT_DEPS_NATIVE; do

            if [ ! -z "$DEP" ] && [ "$DEP" != "$NAME" -o ! -z "$TC_HOST" ]; then

                local DEP_LOCAL=$DEP 

                if ! native foreach_deps "$DEP_LOCAL" "$FUNC" "$RECURSIVE"; then

                    return 1

                fi

                if ! native "$FUNC" "$DEP_LOCAL" "$NAME"; then

                    return 1

                fi

            fi

        done

    fi

}

set_toolchain() {

    if [ "$1" = "native" ]; then

        IS_NATIVE=1

        if [ ! "$2" = "silent" ]; then

            echo " --- set toolchain $NATIVE_PLATFORM-$NATIVE_ARCH (native)"

        fi

        source $NATIVE_TOOLCHAIN_SCRIPT

    else

        IS_NATIVE=

        if [ ! "$2" = "silent" ]; then

            echo " --- set toolchain $PLATFORM-$ARCH (target)"

        fi

        source $NATIVE_TOOLCHAIN_SCRIPT

        source $TOOLCHAIN_SCRIPT

    fi

}

is_complete() {

    local NAME=$1

    local FUNC=$2

    local WAS_NATIVE=$IS_NATIVE

    local WAS_PLATFORM=$PLATFORM

    local WAS_ARCH=$ARCH

    local WAS_PACKET_DIR=$PACKET_DIR

    local PROCESS_SELF=""

    if [ ! -z "$TC_HOST" ]; then

        PROCESS_SELF="process_self"

    fi

    local SUBFUNCS_VAR_NAME=FUNC_DEPS_$FUNC

    local SUBFUNCS=${!SUBFUNCS_VAR_NAME}

    local COMPLETION_KEY="$PLATFORM:$ARCH:$NAME:$FUNC"

    if [ ! -z ${COMPLETION_STATUS[$COMPLETION_KEY]} ]; then

        if [ "${COMPLETION_STATUS[$COMPLETION_KEY]}" = "complete" ]; then

            return 0

        else

            return 1

        fi

    fi

    COMPLETION_STATUS[$COMPLETION_KEY]=incomplete

    if ! check_packet_function $1 $2; then

        return 1

    fi

    if [ ! -z "$NO_CHECK_DEPS" ]; then

        COMPLETION_STATUS[$COMPLETION_KEY]=complete

        return 0

    fi

    source $INCLUDE_SCRIPT_DIR/inc-pkall-none.sh

    [ ! $? -eq 0 ] && return 1

    source "$PACKET_SCRIPT_DIR/$NAME.sh"

    [ ! $? -eq 0 ] && return 1

    if [ ! -z "$WAS_NATIVE" ]; then

        DEPS="$DEPS $DEPS_NATIVE"

        DEPS_NATIVE=

    fi

    local FAIL=

    local CURRENT_DEPS="$DEPS"

    local CURRENT_DEPS_NATIVE="$DEPS_NATIVE"

    for SUBFUNC in $SUBFUNCS; do

        local SUBFUNC_LOCAL=$SUBFUNC

        if [ "${SUBFUNC_LOCAL:0:2}" = "--" ]; then

            if [ ! -z "$CURRENT_DEPS_NATIVE" ]; then

                SUBFUNC_LOCAL=${SUBFUNC_LOCAL:2}

                if [ -z "$WAS_NATIVE" ]; then

                    set_toolchain "native" "silent"

                    PLATFORM=$NATIVE_PLATFORM

                    ARCH=$NATIVE_ARCH

                    PACKET_DIR=$NATIVE_PACKET_DIR

                fi

                for DEP in $CURRENT_DEPS_NATIVE; do

                    if [ ! -z "$DEP" ] && [ "$DEP" != "$NAME" -o "$PROCESS_SELF" = "process_self" ]; then

                        local DEP_LOCAL=$DEP

                        if ! is_complete $DEP_LOCAL $SUBFUNC_LOCAL; then

                            FAIL=1

                            break

                        fi

                        if [ "$WAS_PACKET_DIR/$NAME/$FUNC.done" -ot "$PACKET_DIR/$DEP_LOCAL/$SUBFUNC_LOCAL.done" ]; then

                            FAIL=1

                            break

                        fi

                    fi

                done

                if [ -z "$WAS_NATIVE" ]; then

                    PLATFORM=$WAS_PLATFORM

                    ARCH=$WAS_ARCH

                    PACKET_DIR=$WAS_PACKET_DIR

                    set_toolchain "" "silent"

                fi

                if [ ! -z "$FAIL" ]; then

                    return 1

                fi

            fi

        elif [ "${SUBFUNC_LOCAL:0:1}" = "-" ]; then

            SUBFUNC_LOCAL=${SUBFUNC_LOCAL:1}

            for DEP in $CURRENT_DEPS; do

                if [ ! -z "$DEP" ] && [ "$DEP" != "$NAME" ]; then

                    local DEP_LOCAL=$DEP

                    if ! is_complete $DEP_LOCAL $SUBFUNC_LOCAL; then

                        return 1

                    fi

                  if [ "$PACKET_DIR/$NAME/$FUNC.done" -ot "$PACKET_DIR/$DEP_LOCAL/$SUBFUNC_LOCAL.done" ]; then

                      return 1

                  fi

                fi

            done 

        else

            if ! is_complete $NAME $SUBFUNC_LOCAL; then

                return 1

            fi

            if [ "$PACKET_DIR/$NAME/$FUNC.done" -ot "$PACKET_DIR/$NAME/$SUBFUNC_LOCAL.done" ]; then

                return 1

            fi

       fi

    done

    COMPLETION_STATUS[$COMPLETION_KEY]=complete

}

prepare() {

    local NAME=$1

    local FUNC=$2

    local WAS_NATIVE=$IS_NATIVE

    local WAS_PLATFORM=$PLATFORM

    local WAS_ARCH=$ARCH

    local WAS_PACKET_DIR=$PACKET_DIR

    local PROCESS_SELF=""

    if [ ! -z "$TC_HOST" ]; then

        PROCESS_SELF="process_self"

    fi

    local SUBFUNCS_VAR_NAME=FUNC_DEPS_$FUNC

    local SUBFUNCS=${!SUBFUNCS_VAR_NAME}

    source $INCLUDE_SCRIPT_DIR/inc-pkall-none.sh

    [ ! $? -eq 0 ] && return 1

    source "$PACKET_SCRIPT_DIR/$NAME.sh"

    [ ! $? -eq 0 ] && return 1

    if [ ! -z "$WAS_NATIVE" ]; then

        DEPS="$DEPS $DEPS_NATIVE"

        DEPS_NATIVE=

    fi

    local FAIL=

    local CURRENT_DEPS="$DEPS"

    local CURRENT_DEPS_NATIVE="$DEPS_NATIVE"

    for SUBFUNC in $SUBFUNCS; do

        local SUBFUNC_LOCAL=$SUBFUNC

        if [ "${SUBFUNC_LOCAL:0:2}" = "--" ]; then

            if [ ! -z "$CURRENT_DEPS_NATIVE" ]; then

                SUBFUNC_LOCAL=${SUBFUNC_LOCAL:2}

                if [ -z "$WAS_NATIVE" ]; then

                    set_toolchain "native"

                    PLATFORM=$NATIVE_PLATFORM

                    ARCH=$NATIVE_ARCH

                    PACKET_DIR=$NATIVE_PACKET_DIR

                fi

                for DEP in $CURRENT_DEPS_NATIVE; do

                    if [ ! -z "$DEP" ] && [ "$DEP" != "$NAME" -o "$PROCESS_SELF" = "process_self" ]; then

                        if ! $SUBFUNC_LOCAL $DEP; then

                            FAIL=1

                            break

                        fi

                    fi

                done

                if [ -z "$WAS_NATIVE" ]; then

                    PLATFORM=$WAS_PLATFORM

                    ARCH=$WAS_ARCH

                    PACKET_DIR="$WAS_PACKET_DIR"

                    set_toolchain

                fi

                if [ ! -z "$FAIL" ]; then

                    return 1

                fi

            fi

        elif [ "${SUBFUNC_LOCAL:0:1}" = "-" ]; then

            SUBFUNC_LOCAL=${SUBFUNC_LOCAL:1}

            for DEP in $CURRENT_DEPS; do

                if [ ! -z "$DEP" ] && [ "$DEP" != "$NAME" ]; then

                    if ! $SUBFUNC_LOCAL $DEP; then

                        return 1

                    fi

                fi

            done 

        elif ! $SUBFUNC_LOCAL $NAME; then

            return 1

        fi

    done

    if [ ! -z "$CLEAN_BEFORE_DO" ]; then

        if ! clean_packet_directory $NAME $FUNC; then

            return 1

        fi

    fi

}

add_envdeps() {

	if ! copy "$PACKET_DIR/$1/env" "$PACKET_DIR/$2/envdeps"; then

	    return 1

	fi

}

add_envdeps_native() {

    if ! copy "$PACKET_DIR/$1/env_native" "$PACKET_DIR/$2/envdeps_native"; then

        return 1

    fi

}

add_envdeps_native_cross() {

    if ! copy "$NATIVE_PACKET_DIR/$1/env" "$PACKET_DIR/$2/envdeps_native"; then

        return 1

    fi

}

add_envdeps_release() {

    if ! copy "$PACKET_DIR/$1/env_release" "$PACKET_DIR/$2/envdeps_release"; then

        return 1

    fi

}

# functions

update() {

    local NAME=$1

    prepare $NAME download || return 1

    call_packet_function $NAME download "" "" compare_results || return 1

}

download() {

    local NAME=$1

    is_complete $NAME download && return 0

    prepare     $NAME download || return 1

    call_packet_function $NAME download || return 1

}

unpack() {

    local NAME=$1

    is_complete $NAME unpack && return 0

    prepare     $NAME unpack || return 1

    call_packet_function $NAME unpack || return 1

}

envdeps() {

    local NAME=$1

    is_complete $NAME envdeps && return 0 

    prepare     $NAME envdeps || return 1

    message "$NAME envdeps"

    try_do_nothing $NAME envdeps && return 0

    clean_packet_directory_silent $NAME envdeps

    mkdir -p "$PACKET_DIR/$NAME/envdeps"

    if ! foreach_deps $NAME add_envdeps; then

        return 1

    fi

    set_done $NAME envdeps

}

envdeps_native() {

    local NAME=$1

    is_complete $NAME envdeps_native && return 0 

    prepare     $NAME envdeps_native || return 1

    message "$NAME envdeps_native"

    try_do_nothing $NAME envdeps_native && return 0

    clean_packet_directory_silent $NAME envdeps_native

    mkdir -p "$PACKET_DIR/$NAME/envdeps_native"

    if ! foreach_deps $NAME add_envdeps_native; then

        return 1

    fi

    if ! foreach_deps $NAME add_envdeps_native_cross "" "native"; then

        return 1

    fi

    set_done $NAME envdeps_native

}