path: root/otp_build

#! /bin/sh
#
# %CopyrightBegin%
#
# Copyright Ericsson AB 2002-2014. All Rights Reserved.
#
# The contents of this file are subject to the Erlang Public License,
# Version 1.1, (the "License"); you may not use this file except in
# compliance with the License. You should have received a copy of the
# Erlang Public License along with this software. If not, it can be
# retrieved online at http://www.erlang.org/.
#
# Software distributed under the License is distributed on an "AS IS"
# basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
# the License for the specific language governing rights and limitations
# under the License.
#
# %CopyrightEnd%
#

# Expected autoconf version
EXPECTED_AUTOCONF_VERSION=2.59

# Global configuration variables
#
# NOTE: lazy_configure depends on '.' always being last directory
if [ -z "$ONLY_ERTS" ]; then
    AUTOCONF_SUBDIRS="lib lib/* lib/test_server/src"
fi
AUTOCONF_SUBDIRS="$AUTOCONF_SUBDIRS erts ."

# `bootstrap_apps' should include application that are built, or
# partly built in one of the bootstrap phases. Applications that
# only get some static includes copied into the bootstrap directory
# should not be included.
bootstrap_apps="erts lib/asn1 lib/compiler lib/hipe lib/ic lib/kernel lib/parsetools lib/sasl lib/snmp lib/stdlib lib/syntax_tools"

# We will quote a bit more than needed, but the important thing is that
# all that needs quoting will be quoted...
DONT_QUOTE="A-Za-z0-9~/=_+-"

# Utility functions
usage ()
{
    echo "Available options (-a switch select all applications):"
    echo "    setup [-a] [<configure parameters>] - does autoconf, configure and boot."
    echo "    all [-a] <dir> - does autoconf, configure, boot, release"
    echo "    autoconf - (re)build the configure scripts"
    echo "    configure [<configure parameters>] - does the actual configuration"
    echo "    boot [-a] - bootstraps and builds the system (after configure)"
    echo "    release <target_dir> - creates a small release to <target_dir>"
    echo "    release [-a] <target_dir> - creates full release to <target_dir>"
    echo "    smp [-a] - build an Erlang system, smp flavor only"
    echo "    tests <dir> - Build testsuites to <dir>"
    echo "    patch_app [-f] <target_dir> <app1>... - build given apps to <target_dir>"
    echo "         If core apps are patched, new start scripts will be created"
    echo "         and 'Install' must be run again."
    echo ""
    echo "These are for cleaning up an open source distribution"
    echo "with prebuilt files, so that it resembles the clean developers"
    echo "codebase:"
    echo "    remove_prebuilt_files - create a minimal source tree"
    echo "    save_bootstrap - recreate primary bootstrap"
    echo ""
    echo "Special targets for Windows(tm) build:"
    echo "    debuginfo_win32 <dir> - adds debug emulator and pdb files to <dir>"
    echo "    installer_win32 <dir> - creates a windows installer from <dir>" 
    echo ""
    echo "Before trying to build on windows, consider the following option"
    echo "    env_win32 [<arch>] - echo environment settings for win32 with visual C++, use with eval"
    echo "                         The optional <arch> can be x64 for 64bit Windows 7" 
    echo "                         or x86 for 32bit Windows XP+"
    echo "    env_win64 - echo environment settings for win32 with visual C++, use with eval"
    echo "                Note that env_win32 x64 gives the same result, Windows 7 64bit"
    echo "    env_mingw32 - echo environment settings for win32 with MinGW, use with eval"
    echo "                  - experimental!"
    echo "    env_msys64 - echo environment settings for win32 with visual C++ running "
    echo "                 msys and mingw, use with eval"
    echo "                  - experimental!"
    echo ""
    echo "Before trying to build for vxworks, consider the following option"
    echo "    env_vxworks <cpu>  - echo environment settings for vxworks, use with eval"
    echo ""
    case $version_controller in
	none)
	    ;;
	git)
	    echo ""
	    echo "update_primary [--no-commit] - build and maybe commit a new primary bootstrap"
	    ;;
    esac

    case $version_controller in
	none)
	    ;;
	git)
	    echo ""
	    echo "update_preloaded [--no-commit] - build and maybe commit the preloaded modules"
	    ;;
    esac
}

git_required ()
{
    echo "This operation must be run in a git repository."
    exit 1
}

hide_vars ()
{
    script=
    for var in "$@"; do
	if [ "X$var" != "X" ]; then
	    script="$script test \"X\$$var\" = \"X\" || hidden_$var=\$$var; unset $var;"
	fi
    done
    if [ "X$script" != "X" ]; then
	eval "$script"
    fi
    unset script
}

restore_vars ()
{
    script=
    for var in "$@"; do
	if [ "X$var" != "X" ]; then
	    script="$script unset $var; test \"X\$hidden_$var\" = \"X\" || { $var=\$hidden_$var; export $var; } ; unset hidden_$var;"
	fi
    done
    if [ "X$script" != "X" ]; then
	eval "$script"
    fi
    unset script
}


check_erltop ()
{
        ERLTOP_FORCED=false
	if [ "X$ERL_TOP" = "X" ]; then
		if [ -f ./otp_build -a -f ./erts/autoconf/config.guess ]; then
		    ERLTOP_FORCED=true
		    ERL_TOP=`/bin/pwd`
		    export ERL_TOP
		else
		    echo "The environment variable ERL_TOP must be set." >&2
		    exit 1
		fi
	fi
}

target_contains ()
{
	Y=`echo $TARGET | sed "s,$1,,g"`
	[ X"$Y" != X"$TARGET" ]
	return $?
} 

determine_version_controller ()
{
    version_controller=none

    # The current directory is now $ERL_TOP. Find out whether
    # this directory is a git repository.

    if { git rev-parse --git-dir; } 2>/dev/null >/dev/null; then
	version_controller=git
    fi
}
# Execution of the different options

# Special static config flags for certain platforms are set here  
set_config_flags ()
{
	#
	# NOTE! Do not add special flags here without a *very good*
	#       reason. We normally do not want "./otp_build configure"
	#       and "./configure" to produce different results.
	#       However, in the Windows case this does not matter, since
	#       the only supported way to build on Windows is using
	#       otp_build.
	#
	# * Extra flags to pass to configure are placed in `CONFIG_FLAGS'.
	# * The command line is no longer added to `CONFIG_FLAGS' by
	#   `set_config_flags'. It is instead passed directly to
	#   `run_configure', or added to `CONFIG_FLAGS' at some other
	#   place.
	# * `CONFIG_FLAGS' may contain flags when `set_config_flags' is
	#   called. These flags should survive the call to `set_config_flags'
	#   (in the cross compilation case the whole command line as well as
	#   the cross configuration have been moved here). 

	if target_contains free_source; then
		CONFIG_FLAGS="$CONFIG_FLAGS --host=$TARGET"
	fi
	# Link SSL static for win32 binary distributions if not overridden
	if target_contains win32; then
	    XX=`echo $* | grep -v dynamic-ssl-lib`
	    if [ "$*" = "$XX" ]; then 
		CONFIG_FLAGS="--disable-dynamic-ssl-lib $CONFIG_FLAGS"
	    fi
	    CONFIG_FLAGS="--build=$BUILDSYS build_alias=win32 --host=win32 --target=win32 $CONFIG_FLAGS" 
	fi
	    

	if [ "x$OVERRIDE_CONFIG_CACHE" = "x" ]; then
	    CONFIG_FLAGS="$CONFIG_FLAGS --cache-file=/dev/null"
	else
	   CONFIG_FLAGS="$CONFIG_FLAGS --cache-file=$OVERRIDE_CONFIG_CACHE" 
	fi

	env_to_config_flags $erl_build_tool_vars

	export CONFIG_FLAGS;
}

NL="\
"
create_lib_configure_in()
{
    cd $ERL_TOP

    # Multiple versions of autoconf generates code that
    # don't work on all platforms (e.g. SunOS 5.8) if
    # sub directories are soft links. Internally at Ericsson
    # some OTP application directories are soft links.
    # An added "/." solves this problem.

    sdirs=
    for lib_app in $bootstrap_apps; do
	case $lib_app in
	    lib/*)
		if [ -f "$lib_app/configure.in" ]; then
		    app=`echo "$lib_app" | sed "s|lib/\(.*\)|\1|"`
		    sdirs="${sdirs}test ! -f $app/configure || AC_CONFIG_SUBDIRS($app/.)${NL}"
		fi;;
	    *)
		;;
	esac
    done

    sed_bootstrap="s%@BOOTSTRAP_CONFIGURE_APPS@%$sdirs%g"

    sdirs=
    for lib_app in lib/*; do
	is_bapp=false
	for bapp in $bootstrap_apps; do
	    test $bapp != $lib_app || { is_bapp=true; break; }
	done
	if [ $is_bapp = false ] && [ -f "$lib_app/configure.in" ]; then
	    app=`echo "$lib_app" | sed "s|lib/\(.*\)|\1|"`
	    sdirs="${sdirs}    test ! -f $app/configure || AC_CONFIG_SUBDIRS($app/.)${NL}"
	fi
    done

    sed_non_bootstrap="s%@NON_BOOTSTRAP_CONFIGURE_APPS@%$sdirs%g"
    
    rm -f lib/configure.in
    sed "$sed_bootstrap;$sed_non_bootstrap" > lib/configure.in < lib/configure.in.src || {
	echo "Failed to create lib/configure.in"
	exit 1
    }
}

find_sum()
{
    candidates="sum cksum md5sum sha1sum"
    SUM_CMD="wc"
    for x in $candidates; do
	if (echo foo | $x > /dev/null 2>&1); then
	    SUM_CMD=$x
	    break
	fi
    done
}

chk_eq()
{
    master=$1
    shift
    slaves="$@"
    master_sum=`$SUM_CMD $master | awk '{print $1}'`
    for x in $slaves; do
	s=`$SUM_CMD $x | awk '{print $1}'`
	if test "$s" != "$master_sum"; then
	    echo "Error: $master and $x are not equal, make sure they are!" >&2
	    echo "Maybe you would want to:" >&2
	    echo "for x in $slaves; do cp $master \$x; done" >&2
	    echo "? Or something else is wrong." 2>&1
	    exit 2
	fi
    done
}

check_config_helpers ()
{

    aclocals="./aclocal.m4 ./lib/erl_interface/aclocal.m4 ./lib/odbc/aclocal.m4 ./lib/wx/aclocal.m4 ./lib/megaco/aclocal.m4"
    install_shs="./lib/common_test/priv/auxdir/install-sh ./lib/erl_interface/src/auxdir/install-sh ./lib/test_server/src/install-sh"
    config_guesses="./lib/common_test/priv/auxdir/config.guess ./lib/erl_interface/src/auxdir/config.guess ./lib/test_server/src/config.guess"
    config_subs="./lib/common_test/priv/auxdir/config.sub ./lib/erl_interface/src/auxdir/config.sub ./lib/test_server/src/config.sub"

    aclocal_master="./erts/aclocal.m4"
    install_sh_master="./erts/autoconf/install-sh"
    config_guess_master="./erts/autoconf/config.guess"
    config_sub_master="./erts/autoconf/config.sub"

    find_sum

    chk_eq $aclocal_master $aclocals
    chk_eq $install_sh_master $install_shs
    chk_eq $config_guess_master $config_guesses
    chk_eq $config_sub_master $config_subs

}

do_autoconf ()		
{
        create_lib_configure_in
	check_config_helpers

        if target_contains win32; then
	    # Select the correct autoconf on cygwin
	    save_want_autoconf_ver=$WANT_AUTOCONF_VER
	    WANT_AUTOCONF_VER=$EXPECTED_AUTOCONF_VERSION
	    export WANT_AUTOCONF_VER
	fi
	exp_ac_vsn=$EXPECTED_AUTOCONF_VERSION
	ac_vsn_blob=`autoconf --version`
	ac_vsn=`echo x$ac_vsn_blob | sed "s|[^0-9]*\([0-9][^ \t\n]*\).*|\1|"`
	case "$ac_vsn" in
	    $exp_ac_vsn)
		;;
	    *)
		echo "***************************************************" 1>&2
		echo "***************************************************" 1>&2
		echo "*** WARNING: System might fail to configure or"      1>&2
		echo "***          might be erroneously configured"        1>&2
		echo "***          since autoconf version $ac_vsn is used" 1>&2
		echo "***          instead of version $exp_ac_vsn!"        1>&2
		echo "***************************************************" 1>&2
		echo "***************************************************" 1>&2
		;;
	esac

	if [ ! -z "$OVERRIDE_CONFIGURE" ]; then
	    echo "Autoconf disabled on target $TARGET, but is performed on host" >&2
	    # We still use erts configure for erl_interface and VxWorks
	    case "$TARGET" in
		*vxworks*)
		    AUTOCONF_SUBDIRS=`echo $AUTOCONF_SUBDIRS | \
					sed -e 's,lib/erl_interface,,' \
					    -e 's,lib/gs,,' \
					    -e 's,lib/megaco,,'`
		    ;;
	    esac
	fi
	
	hide_vars OVERRIDE_TARGET TARGET
	TARGET=$BUILDSYS
	export TARGET

	for d in $AUTOCONF_SUBDIRS; do
	    file="$d/configure.in"
	    [ -f "$file" ] || continue
	    echo ""
	    [ ! -d "$d/autom4te.cache" ] || {
		echo "=== cleaning $d/autom4te.cache"
		rm -f "$d"/autom4te.cache/*
	    }
	    echo "=== running autoconf in $d"
	    ( cd "$d" && autoconf ) || exit 1
	    chdr=`cat "$file" | sed -n "s|.*\(AC_CONFIG_HEADER\).*|\1|p"`
	    [ "$chdr" = "AC_CONFIG_HEADER" ] || continue
	    echo "=== running autoheader in $d"
	    ( cd "$d" && autoheader ) || exit 1
	done

	restore_vars OVERRIDE_TARGET TARGET

        if target_contains win32; then
	    WANT_AUTOCONF_VER=$save_want_autoconf_ver
	    export WANT_AUTOCONF_VER
	fi
}

run_configure ()
{
    cdir="$ERL_TOP"
    [ -z "$ONLY_ERTS" ] || {
	cdir="$ERL_TOP/erts"
	CONFIG_FLAGS="$CONFIG_FLAGS --no-recursion"
    }

    echo "$cdir/configure $CONFIG_FLAGS" ${1+"$@"}
    (cd "$cdir" && $config_eval ./configure $CONFIG_FLAGS ${1+"$@"}) || exit 1
}

env_to_config_flags ()
{
    for env_var in "$@"; do
	script="echo $env_var=\$$env_var; unset $env_var >/dev/null 2>&1"
	env_arg=`eval $script`
	case $env_arg in
	    "$env_var=")
		;;
	    *[!$DONT_QUOTE]*)
		config_eval=eval
		new_arg=`echo "X$env_arg" | sed "s|^X||;s|\([^$DONT_QUOTE]\)|\\\\\\\\\1|g"`
		CONFIG_FLAGS="$CONFIG_FLAGS $new_arg";;
	    *)
		CONFIG_FLAGS="$CONFIG_FLAGS $env_arg";;
	esac
	eval unset $env_var
    done
}

try_cross_configure ()
{
    cross_configure=no
    host_value=
    build_value=

    # Get `erl_xcomp_vars'
    . "$ERL_TOP/xcomp/erl-xcomp-vars.sh" || exit 1

    for arg in ${1+"$@"}; do
	case "$arg" in
	    --host=*)
		host_value=`echo $x | sed "s|^--host=\(.*\)|\1|"`;;
	    --build=*)
		build_value=`echo $x | sed "s|^--build=\(.*\)|\1|"`;;
	    --xcomp-conf=*)
		cross_configure=yes;;
	    *)
		;;
	esac
    done

    test $cross_configure = yes || {

	test "X$host_value" = "X" || {

	    test "X$build_value" != "X" || build_value="$BUILDSYS"

	    build_sys=`$ERL_TOP/erts/autoconf/config.sub "$build_value"` || exit 1
	    host_sys=`$ERL_TOP/erts/autoconf/config.sub "$host_value"` || exit 1

	    
	    test "$host_sys" = "$build_sys" || cross_configure=yes
	}
    }

    test $cross_configure = yes || return 1

    # cross configure...
    CONFIG_FLAGS=

    env_to_config_flags $erl_build_tool_vars $erl_xcomp_vars

    for arg in ${1+"$@"}; do
	case "$arg" in
	    --host=*)
		host_value=`echo $x | sed "s|^--host=\(.*\)|\1|"`;;
	    --build=*)
		build_value=`echo $x | sed "s|^--build=\(.*\)|\1|"`;;
	    --xcomp-conf=*)
		# tilde expansion is not handled by the `configure' script,
		# but we do it for this argument. This argument is however not
		# a `configure' argument.
	        xcomp_conf=`echo "X$arg" | sed "s|^X--xcomp-conf=\(.*\)\$|\1|g;s|\([^$DONT_QUOTE]\)|\\\\\\\\\1|g"`
		eval "xcomp_conf=$xcomp_conf"
		test "X$xcomp_conf" != "X" || {
		    echo "$0: Missing xcomp-conf file name"
		    exit 1
		}
		test -f "$xcomp_conf" || {
		    echo "$0: Missing xcomp-conf file: $xcomp_conf"
		    exit 1
		}
		. "$xcomp_conf"
		test $? -eq 0 || {
		    echo "$0: Failed to read xcomp-conf file: $xcomp_conf"
		    exit 1
		}
		test "X$erl_xcomp_build" = "X" || build_value="$erl_xcomp_build"
		test "X$erl_xcomp_host" = "X" || host_value="$erl_xcomp_host"
		unset erl_xcomp_build
		unset erl_xcomp_host
		CONFIG_FLAGS="$CONFIG_FLAGS $erl_xcomp_configure_flags"
		unset erl_xcomp_configure_flags
		env_to_config_flags $erl_build_tool_vars $erl_xcomp_vars;;
	    *[!$DONT_QUOTE]*)
		config_eval=eval
	        new_arg=`echo "X$arg" | sed "s|^X||;s|\([^$DONT_QUOTE]\)|\\\\\\\\\1|g"`
		CONFIG_FLAGS="$CONFIG_FLAGS $new_arg";;
	    *)
		CONFIG_FLAGS="$CONFIG_FLAGS $arg";;
	esac
    done

    CONFIG_FLAGS="--host=$host_value $CONFIG_FLAGS"
    test "X$build_value" != "Xguess" || build_value="$BUILDSYS"
    test "X$build_value" = "X" || CONFIG_FLAGS="--build=$build_value $CONFIG_FLAGS"

    # Configure build system for boot strap
    cat <<EOF

*
* Configuring the bootstrap build system...
*

EOF

    # hide build tools environment which is for the cross configure
    set_config_flags $CONFIG_FLAGS
    hide_vars CONFIG_FLAGS

    set_config_flags 
    run_configure --enable-bootstrap-only

    # restore the hidden build tools environment for the cross configure
    restore_vars CONFIG_FLAGS

    COMPFIX=""
    cat <<EOF

*
* Configuring the cross host system ($host_value)...
*

EOF
    # We don't pass the command line here since we already have moved it
    # into CONFIG_FLAGS
    run_configure

    return 0
}

maybe_copy_static_cache ()
{
    if [ '!' -z "$OVERRIDE_CONFIG_CACHE_STATIC" ]; then
	if [ '!' -z "$OVERRIDE_CONFIG_CACHE" ]; then
	    echo "Copying static configure cache $OVERRIDE_CONFIG_CACHE_STATIC to $OVERRIDE_CONFIG_CACHE"
	    cp -f "$OVERRIDE_CONFIG_CACHE_STATIC" "$OVERRIDE_CONFIG_CACHE"
	fi
    fi
}

do_configure ()
{
    setup_make

    # Get `erl_build_tool_vars'
    . "$ERL_TOP/erl-build-tool-vars.sh" || exit 1

    if [ ! -z "$OVERRIDE_CONFIGURE" ]; then
	case $TARGET in
	    vxworks_*)
		( cd erts/autoconf && \
		  $ERL_TOP/erts/autoconf/configure.vxworks $TARGET )
		  echo "Configuring for build system too..." >&2
		  hide_vars OVERRIDE_TARGET TARGET
		  TARGET=$BUILDSYS
		  export TARGET
		  set_config_flags "$@"
		  run_configure "$@"
		  restore_vars OVERRIDE_TARGET TARGET;;
	    *)
		echo "Unexpected target when ordinary configure is" \
			"overridden" >&2
		echo 'check if $OVERRIDE_CONFIGURE and $OVERRIDE_TAGET' \
		        'environments are correct.' >&2
		exit 1;;
	esac
    else
	maybe_copy_static_cache
	try_cross_configure "$@"
	if [ $cross_configure = no ]; then
	    CONFIG_FLAGS=
	    set_config_flags "$@"
	    run_configure "$@"
	fi
    fi
}

do_lazy_configure ()
{
    setup_make
    if [ "x$OVERRIDE_TARGET" != "x" -a "x$OVERRIDE_TARGET" != "xwin32" ]; then
	echo "Not supported for cross compilation" >&2
	exit 1
    fi
    maybe_copy_static_cache
    CONFIG_FLAGS=
    set_config_flags "$@"
    CONFIGURE_FLAGS="$@"
    [ "$CONFIG_FLAGS" = "" ] || CONFIGURE_FLAGS="$CONFIG_FLAGS $CONFIGURE_FLAGS"
    for c_dir in $AUTOCONF_SUBDIRS; do
	if test -f $ERL_TOP/$c_dir/configure.in; then
	    dir=$ERL_TOP/$c_dir
	    echo ""
	    echo "=== Begin configuring $dir"
	    xc_dep= ;
	    xcs_dep= ;
	    test -d $dir/$TARGET || mkdir $dir/$TARGET
	    test -f $dir/aclocal.m4 && xc_dep="$xcs_dep $dir/aclocal.m4"
	    test -f $dir/acsite.m4 && xc_dep="$xcs_dep $dir/acsite.m4"
	    test x$c_dir = x"erts" && xcs_dep="$xcs_dep $dir/config.h.in"
	    $MAKE -f $ERL_TOP/make/lazy_configure.mk                         \
		MAKE="$MAKE" TARGET=$TARGET                                  \
		ERL_TOP=$ERL_TOP                                             \
		CONFIGURE_FLAGS="$CONFIGURE_FLAGS"                           \
		CONFIGURE_DIR=$dir                                           \
		EXTRA_CONFIGURE_DEPENDENCIES=$xc_dep                         \
		EXTRA_CONFIG_STATUS_DEPENDENCIES=$xcs_dep                    \
		EXPECTED_AUTOCONF_VERSION=$EXPECTED_AUTOCONF_VERSION         \
		lazy_configure
	    echo "=== Done configuring $dir"
	    echo ""
	fi
    done
}

do_lazy_configure_clean ()
{
    setup_make
    if [ "x$OVERRIDE_TARGET" != "x" -a "x$OVERRIDE_TARGET" != "xwin32" ]; then
	echo "Not supported for cross compilation" >&2
	exit 1
    fi
    for c_dir in $AUTOCONF_SUBDIRS; do
	if test -f $ERL_TOP/$c_dir/configure.in; then
	    dir=$ERL_TOP/$c_dir
	    echo ""
	    echo "=== Begin cleaning configure in $dir"
	    xc_dep= ;
	    xcs_dep= ;
	    test -d $dir/$TARGET || mkdir $dir/$TARGET
	    test -f $dir/aclocal.m4 && xc_dep="$xcs_dep $dir/aclocal.m4"
	    test -f $dir/acsite.m4 && xc_dep="$xcs_dep $dir/acsite.m4"
	    test x$c_dir = x"erts" && xcs_dep="$xcs_dep $dir/config.h.in"
	    $MAKE -f $ERL_TOP/make/lazy_configure.mk                         \
		MAKE="$MAKE" TARGET=$TARGET                                  \
		ERL_TOP=$ERL_TOP                                             \
		CONFIGURE_DIR=$dir                                           \
		EXPECTED_AUTOCONF_VERSION=$EXPECTED_AUTOCONF_VERSION         \
		lazy_configure_clean
	    echo "=== Done cleaning configure in $dir"
	    echo ""
	fi
    done

}

do_lazy_configure_target_clean ()
{
    setup_make
    if [ "x$OVERRIDE_TARGET" != "x" -a "x$OVERRIDE_TARGET" != "xwin32" ]; then
	echo "Not supported for cross compilation" >&2
	exit 1
    fi
    for c_dir in $AUTOCONF_SUBDIRS; do
	if test -f $ERL_TOP/$c_dir/configure.in; then
	    dir=$ERL_TOP/$c_dir
	    echo ""
	    echo "=== Begin target cleaning configure in $dir"
	    xc_dep= ;
	    xcs_dep= ;
	    test -d $dir/$TARGET || mkdir $dir/$TARGET
	    test -f $dir/aclocal.m4 && xc_dep="$xcs_dep $dir/aclocal.m4"
	    test -f $dir/acsite.m4 && xc_dep="$xcs_dep $dir/acsite.m4"
	    test x$c_dir = x"erts" && xcs_dep="$xcs_dep $dir/config.h.in"
	    $MAKE -f $ERL_TOP/make/lazy_configure.mk                         \
		MAKE="$MAKE" TARGET=$TARGET                                  \
		ERL_TOP=$ERL_TOP                                             \
		CONFIGURE_DIR=$dir                                           \
		EXPECTED_AUTOCONF_VERSION=$EXPECTED_AUTOCONF_VERSION         \
		lazy_configure_target_clean
	    echo "=== Done target cleaning configure in $dir"
	    echo ""
	fi
    done

}

    

echo_setenv ()
{
    case "$DAILY_BUILD_SCRIPT$SHELL" in
	true*)
	    echo "$1=$2";;
	*ash|*ksh|*/sh|*zsh|*ash)
	    echo "$1=\"$2\";export $1$3";;
	*csh)
	    echo "setenv $1 \"$2\"$3";;
    esac
}

echo_env_bootstrap ()
{
    boot_bin=$BOOTSTRAP_ROOT/bootstrap/bin
    
    echo_setenv PATH $boot_bin:$PATH
}

echo_env_erltop ()
{
    if [ X"$ERL_TOP" = X"" -o "$ERLTOP_FORCED" = "true" ]; then
	if [ -f ./otp_build ]; then
	    # Seems to be current directory...
	    echo_setenv ERL_TOP `/bin/pwd` ';'
	else
	    echo "You need to either set ERL_TOP first or stand in the same" \ 
		"directory as this script resides in." >&2
	    exit 1
	fi
    fi
}

echo_envinfo ()
{
    case "$SHELL" in
	*csh)
	    return 0
	    ;;
	*)
	    ;;
    esac
    if [ X"$DAILY_BUILD_SCRIPT" = X"true" ]; then
	echo '# Output generated for daily build script only '\
	     '($DAILY_BUILD_SCRIPT=true)'
    else
	echo '# Please note:'
	echo '# The command you are running is supposed to be run'\
	     'using the shells'
	echo '# "eval" builtin, like in:'
	echo '# $ eval `./otp_build env_<something>`'
	echo '# If you see this comment, you probably haven'"'"'t done that.'
    fi
}

echo_env_vxworks ()
{
    if [ -z "$1" ]; then 
	echo "env_vxworks requires CPU architecture as parameter (ppc603, ppc860 etc)." >&2
	exit 1
    fi
    echo_env_erltop
    echo_setenv OVERRIDE_CONFIGURE true ';'
    echo_setenv OVERRIDE_TARGET vxworks_$1
    echo_envinfo
}

echo_env_win32 ()
{
    #echo_envinfo
    if [ X"$SHELL" = X"" ]; then
	echo "You need to export the shell variable first," \
		"for bourne-like shells, type:" >&2
	echo 'export SHELL' >&2
	echo "and for csh-like shells, type:" >&2
	echo 'setenv SHELL $SHELL' >&2
	echo " - then try again." >&2
	exit 1
    fi
    echo_env_erltop
    # Try to cope with paths containing unexpected things like stray 
    # mixed paths (c:/something/bin) and quotes. Only C and D drive
    # handled.
    CCYGPATH=`cygpath c:\\`
    DCYGPATH=`cygpath d:\\`
    P2=`echo :$PATH | \
	sed "s,\",,g;s,:[cC]:,:$CCYGPATH,g;s,:[dD]:,:$DCYGPATH,g;s,^:,,"`
    P3=""
    save_ifs=$IFS
    IFS=:
    for p in $P2; do
	if [ -d "$p" ]; then
	    C1="`(cygpath -d $p 2>/dev/null || cygpath -w $p)`" 2> /dev/null
	    C2=`cygpath "$C1" 2> /dev/null` 2> /dev/null
	else
	    C2=""
	fi
	if [ ! -z "$C2" ]; then
	    if [ -z "$P3" ];then 
		P3="$C2"
	    else 
		P3="$P3:$C2"
	    fi
	fi
    done
    IFS=$save_ifs
    WIN32_WRAPPER_PATH="$ERL_TOP/erts/etc/win32/cygwin_tools/vc:$ERL_TOP/erts/etc/win32/cygwin_tools"

    
    echo_setenv OVERRIDE_TARGET win32 ';'
    echo_setenv CC cc.sh ';'
    echo_setenv CXX cc.sh ';'
    echo_setenv AR ar.sh ';'
    echo_setenv RANLIB true ';'
    if [ -f "$ERL_TOP/erts/autoconf/win32.config.cache.static" ]; then
	echo_setenv OVERRIDE_CONFIG_CACHE_STATIC  "$ERL_TOP/erts/autoconf/win32.config.cache.static" ';'
    fi
    echo_setenv OVERRIDE_CONFIG_CACHE "$ERL_TOP/erts/autoconf/win32.config.cache" ';'
    echo_setenv WIN32_WRAPPER_PATH "$WIN32_WRAPPER_PATH" ';'
    echo_setenv PATH "$WIN32_WRAPPER_PATH:$P3" ';'
    echo_envinfo
}

echo_env_mingw32 ()
{
    #echo_envinfo
    if [ X"$SHELL" = X"" ]; then
	echo "You need to export the shell variable first," \
		"for bourne-like shells, type:" >&2
	echo 'export SHELL' >&2
	echo "and for csh-like shells, type:" >&2
	echo 'setenv SHELL $SHELL' >&2
	echo " - then try again." >&2
	exit 1
    fi
    echo_env_erltop
    CCYGPATH=`cygpath c:\\`
    DCYGPATH=`cygpath d:\\`
    P2=`echo :$PATH | \
	sed "s,\",,g;s,:[cC]:,:$CCYGPATH,g;s,:[dD]:,:$DCYGPATH,g;s,^:,,"`
    P3=""
    save_ifs=$IFS
    IFS=:
    for p in $P2; do
	if [ -d "$p" ]; then
	    C1="`(cygpath -d $p 2>/dev/null || cygpath -w $p)`" 2> /dev/null
	    C2=`cygpath "$C1" 2> /dev/null` 2> /dev/null
	else
	    C2=""
	fi
	if [ ! -z "$C2" ]; then
	    if [ -z "$P3" ];then 
		P3="$C2"
	    else 
		P3="$P3:$C2"
	    fi
	fi
    done
    found=false
    for p in $P3; do
	if [ -f "$p/mingw32-gcc.exe" ]; then
	    found=$p
	fi
    done
    found2=false
    for p in $P3; do
	if [ -f "$p/wmc.exe" ]; then
	    found2=$p
	fi
    done
    IFS=$save_ifs
    if [ X"$found" = X"false" ]; then
	echo "Could not find mingw32-gcc in PATH, build with mingw not possible!" >&2
	return
    fi

    if [ X"$found2" = X"false" ]; then
	echo "Could not find wmc.exe in PATH, part of wine for windows, " >&2
	echo "needed for message file compilation: http://wine.sourceforge.net!!" >&2
	return
    fi
    WIN32_WRAPPER_PATH="$ERL_TOP/erts/etc/win32/cygwin_tools/mingw:$ERL_TOP/erts/etc/win32/cygwin_tools"


    echo_setenv OVERRIDE_TARGET win32 ';'
    echo_setenv MINGW_EXE_PATH $found ';'
    echo_setenv WINE_EXE_PATH $found2 ';'
    echo_setenv CC cc.sh ';'
    echo_setenv CXX cc.sh ';'
    echo_setenv AR ar.sh ';'
    echo_setenv RANLIB true ';'
    echo_setenv WIN32_WRAPPER_PATH "$WIN32_WRAPPER_PATH" ';'
    echo_setenv PATH "$WIN32_WRAPPER_PATH:$P3" ';'
    echo_envinfo
}

# N.B. In Erlang, and the build system, win32 means windows, so we keep
# everything as terget win32, but add the CONFIG_SUBTYPE win64, which can
# be handled by configure, setting WINDOWS_64BIT in headers and such
echo_env_win64 ()
{
    #echo_envinfo
    if [ X"$SHELL" = X"" ]; then
	echo "You need to export the shell variable first," \
		"for bourne-like shells, type:" >&2
	echo 'export SHELL' >&2
	echo "and for csh-like shells, type:" >&2
	echo 'setenv SHELL $SHELL' >&2
	echo " - then try again." >&2
	exit 1
    fi
    echo_env_erltop
    # Try to cope with paths containing unexpected things like stray 
    # mixed paths (c:/something/bin) and quotes. Only C and D drive
    # handled.
    CCYGPATH=`cygpath c:\\`
    DCYGPATH=`cygpath d:\\`
    P2=`echo :$PATH | \
	sed "s,\",,g;s,:[cC]:,:$CCYGPATH,g;s,:[dD]:,:$DCYGPATH,g;s,^:,,"`
    P3=""
    save_ifs=$IFS
    IFS=:
    for p in $P2; do
	if [ -d "$p" ]; then
	    C1="`(cygpath -d $p 2>/dev/null || cygpath -w $p)`" 2> /dev/null
	    C2=`cygpath "$C1" 2> /dev/null` 2> /dev/null
	else
	    C2=""
	fi
	if [ ! -z "$C2" ]; then
	    if [ -z "$P3" ];then 
		P3="$C2"
	    else 
		P3="$P3:$C2"
	    fi
	fi
    done
    IFS=$save_ifs
    WIN32_WRAPPER_PATH="$ERL_TOP/erts/etc/win32/cygwin_tools/vc:$ERL_TOP/erts/etc/win32/cygwin_tools"

    
    echo_setenv OVERRIDE_TARGET win32 ';'
    echo_setenv CONFIG_SUBTYPE win64 ';'
    echo_setenv CC cc.sh ';'
    echo_setenv CXX cc.sh ';'
    echo_setenv AR ar.sh ';'
    echo_setenv RANLIB true ';'
    if [ -f "$ERL_TOP/erts/autoconf/win64.config.cache.static" ]; then
	echo_setenv OVERRIDE_CONFIG_CACHE_STATIC  "$ERL_TOP/erts/autoconf/win64.config.cache.static" ';'
    fi
    echo_setenv OVERRIDE_CONFIG_CACHE "$ERL_TOP/erts/autoconf/win64.config.cache" ';'
    echo_setenv WIN32_WRAPPER_PATH "$WIN32_WRAPPER_PATH" ';'
    echo_setenv PATH "$WIN32_WRAPPER_PATH:$P3" ';'
    echo_envinfo
}

echo_env_msys32 ()
{
    #echo_envinfo
    if [ X"$SHELL" = X"" ]; then
	echo "You need to export the shell variable first," \
		"for bourne-like shells, type:" >&2
	echo 'export SHELL' >&2
	echo "and for csh-like shells, type:" >&2
	echo 'setenv SHELL $SHELL' >&2
	echo " - then try again." >&2
	exit 1
    fi
    echo_env_erltop
    # Try to cope with paths containing unexpected things like stray 
    # mixed paths (c:/something/bin) and quotes. Only C and D drive
    # handled.
    P2=`echo :$PATH | \
	sed "s,\",,g;s,:\([a-zA-Z]\):,:/\L\1,g;s,^:,,"`
    P3=""
    save_pwd=`pwd`
    save_ifs=$IFS
    IFS=:
    for p in $P2; do
	if [ -d "$p" ]; then
	    C1=`(cd "$p" && cmd //C "for %i in (".") do @echo %~fsi")`
	    C2=`echo "$C1" | sed 's,^\([a-zA-Z]\):\\\\,/\L\1/,;s,\\\\,/,g'`
	else
	    C2=""
	fi
	if [ ! -z "$C2" ]; then
	    if [ -z "$P3" ];then 
		P3="$C2"
	    else 
		P3="$P3:$C2"
	    fi
	fi
    done
    IFS=$save_ifs
    WIN32_WRAPPER_PATH="$ERL_TOP/erts/etc/win32/msys_tools/vc:$ERL_TOP/erts/etc/win32/msys_tools"

    echo_setenv OVERRIDE_TARGET win32 ';'
    echo_setenv CC cc.sh ';'
    echo_setenv CXX cc.sh ';'
    echo_setenv AR ar.sh ';'
    echo_setenv RANLIB true ';'
    if [ -f "$ERL_TOP/erts/autoconf/win32.config.cache.static" ]; then
	echo_setenv OVERRIDE_CONFIG_CACHE_STATIC  "$ERL_TOP/erts/autoconf/win32.config.cache.static" ';'
    fi

    echo_setenv OVERRIDE_CONFIG_CACHE "$ERL_TOP/erts/autoconf/win32.config.cache" ';'
    echo_setenv WIN32_WRAPPER_PATH "$WIN32_WRAPPER_PATH" ';'
    echo_setenv PATH "$WIN32_WRAPPER_PATH:$P3" ';'
    echo_envinfo
}


echo_env_msys64 ()
{
    #echo_envinfo
    if [ X"$SHELL" = X"" ]; then
	echo "You need to export the shell variable first," \
		"for bourne-like shells, type:" >&2
	echo 'export SHELL' >&2
	echo "and for csh-like shells, type:" >&2
	echo 'setenv SHELL $SHELL' >&2
	echo " - then try again." >&2
	exit 1
    fi
    echo_env_erltop
    # Try to cope with paths containing unexpected things like stray 
    # mixed paths (c:/something/bin) and quotes. Only C and D drive
    # handled.
    P2=`echo :$PATH | \
	sed "s,\",,g;s,:\([a-zA-Z]\):,:/\L\1,g;s,^:,,"`
    P3=""
    save_pwd=`pwd`
    save_ifs=$IFS
    IFS=:
    for p in $P2; do
	if [ -d "$p" ]; then
	    C1=`(cd "$p" && cmd //C "for %i in (".") do @echo %~fsi")`
	    C2=`echo "$C1" | sed 's,^\([a-zA-Z]\):\\\\,/\L\1/,;s,\\\\,/,g'`
	else
	    C2=""
	fi
	if [ ! -z "$C2" ]; then
	    if [ -z "$P3" ];then 
		P3="$C2"
	    else 
		P3="$P3:$C2"
	    fi
	fi
    done
    IFS=$save_ifs
    WIN32_WRAPPER_PATH="$ERL_TOP/erts/etc/win32/msys_tools/vc:$ERL_TOP/erts/etc/win32/msys_tools"

    echo_setenv OVERRIDE_TARGET win32 ';'
    echo_setenv CONFIG_SUBTYPE win64 ';'
    echo_setenv CC cc.sh ';'
    echo_setenv CXX cc.sh ';'
    echo_setenv AR ar.sh ';'
    echo_setenv RANLIB true ';'
    if [ -f "$ERL_TOP/erts/autoconf/win64.config.cache.static" ]; then
	echo_setenv OVERRIDE_CONFIG_CACHE_STATIC  "$ERL_TOP/erts/autoconf/win64.config.cache.static" ';'
    fi

    echo_setenv OVERRIDE_CONFIG_CACHE "$ERL_TOP/erts/autoconf/win64.config.cache" ';'
    echo_setenv WIN32_WRAPPER_PATH "$WIN32_WRAPPER_PATH" ';'
    echo_setenv PATH "$WIN32_WRAPPER_PATH:$P3" ';'
    echo_envinfo
}


lookup_prog_in_path ()
{
    PROG=$1
    save_ifs=$IFS
    IFS=:
    for p in $PATH; do
	# In cygwin the programs are not always executable and have .exe suffix...
	if [ "X$TARGET" = "Xwin32" ]; then
	    if [ -f $p/$PROG.exe ]; then
		echo $p/$PROG
		break;
	    fi
	else
	    if [ -x $p/$PROG ]; then
		echo $p/$PROG
		break;
	    fi
	fi
    done
    IFS=$save_ifs
}

setup_make ()
{
    if [ -z "$MAKE" ]; then
	case $TARGET in
	    win32)
		MAKE=make;;
	    *)
		if [ -n "`lookup_prog_in_path gmake`" ]; then
		    MAKE=gmake
		else
		    MAKE=make
		fi;;
       esac
    fi
    export MAKE
}

get_do_commit ()
{
    if [ "x$1" = "x" ]; then
	do_commit=true
    elif [ "$1" = "--no-commit" ]; then
	do_commit=false
    else
	echo "Unknown option '$1'" 1>&2
	exit 1
    fi
}
  
do_primary_git ()
{
    get_do_commit $1
    setup_make
    if [ "x$OVERRIDE_TARGET" != "x" -a "x$OVERRIDE_TARGET" != "xwin32" ]; then
	do_primary_cross
    else
	$MAKE MAKE="$MAKE" BOOTSTRAP_ROOT=$BOOTSTRAP_ROOT TARGET=$TARGET primary_bootstrap || exit 1;
    fi
    if [ $do_commit = true ]; then
	git add -A bootstrap/lib/kernel \
            bootstrap/lib/stdlib \
	    bootstrap/lib/compiler \
	    bootstrap/bin
	find bootstrap -name egen -o -name '*.script' -o \
	    -name '*.app' -o -name '*.appup' |
        xargs git reset HEAD
	git commit --no-verify -m 'Update primary bootstrap'
	echo "Primary bootstrap updated and commited."
    else
	echo ""
	echo "Primary bootstrap rebuilt. Use \"git add bootstrap/...\" to stage changed files."
	echo ""
    fi
}

do_update_prel_git ()
{
    get_do_commit $1
    setup_make
    (cd $ERL_TOP/erts/preloaded/src && $MAKE MAKE="$MAKE" BOOTSTRAP_ROOT=$BOOTSTRAP_ROOT TARGET=$TARGET clean)
    $MAKE MAKE="$MAKE" BOOTSTRAP_ROOT=$BOOTSTRAP_ROOT TARGET=$TARGET preloaded || exit 1
    (cd $ERL_TOP/erts/preloaded/src && $MAKE MAKE="$MAKE" BOOTSTRAP_ROOT=$BOOTSTRAP_ROOT TARGET=$TARGET copy)
    if [ $do_commit = true ]; then
	git add -A $ERL_TOP/erts/preloaded/ebin/*.beam
	git commit -m 'Update preloaded modules'
	echo "Preloaded updated and commited."
    else
	echo ""
	echo "Preloaded rebuilt. Use \"git add erts/preloaded/ebin/...\" to stage changed beam files."
	echo ""
    fi
}

do_boot ()
{
    setup_make

    # Bootstrap if we are cross compiling
    if [ X`$MAKE is_cross_configured` = Xyes ]; then
	TARGET=$BUILDSYS
	$MAKE MAKE="$MAKE" BOOTSTRAP_ROOT=$BOOTSTRAP_ROOT CROSS_COMPILING=no TARGET=$TARGET bootstrap || exit 1
	TARGET=`$MAKE target_configured`
    elif [ "x$OVERRIDE_TARGET" != "x" -a "x$OVERRIDE_TARGET" != "xwin32" ]; then
	hide_vars OVERRIDE_TARGET TARGET
	TARGET=$BUILDSYS
	$MAKE MAKE="$MAKE" BOOTSTRAP_ROOT=$BOOTSTRAP_ROOT TARGET=$TARGET bootstrap || exit 1

	restore_vars OVERRIDE_TARGET TARGET
    fi

    # Build it (including bootstrap if not cross compiling)
    $MAKE MAKE="$MAKE" BOOTSTRAP_ROOT=$BOOTSTRAP_ROOT TARGET=$TARGET all || exit 1
}

do_boot_emu ()
{
    setup_make
    if [ X`$MAKE is_cross_configured` = Xyes ]; then
	TARGET=`$MAKE target_configured`
    fi
    $MAKE MAKE="$MAKE" BOOTSTRAP_ROOT=$BOOTSTRAP_ROOT TARGET=$TARGET emulator || exit 1
}

do_release ()
{
    setup_make
    if [ X`$MAKE is_cross_configured` = Xyes ]; then
	TARGET=`$MAKE target_configured`
    fi
    $MAKE MAKE="$MAKE" BOOTSTRAP_ROOT=$BOOTSTRAP_ROOT TARGET=$TARGET \
	RELEASE_ROOT=$1 OTP_STRICT_INSTALL=$OTP_STRICT_INSTALL \
	release || exit 1
}

do_patch_app ()
{
    # If target dir exists and has an installation of same major release, then
    # build given apps.
    # If patch includes erts, kernel, stdlib, sasl, then find latest
    # erts, kernel, stdlib, sasl and create .rel files.
    # Create .script/.boot

    if [ $# -lt 2 ]; then
	usage
	exit 1
    fi

    setup_make
    if [ X`$MAKE is_cross_configured` = Xyes ]; then
       TARGET=`$MAKE target_configured`
    fi
    if [ "x$1" = "x-f" ]; then
	force="-force"
	shift
    else
	force=
    fi
    target_dir=$1
    if [ ! -d "$target_dir/releases/$otp_major_vsn" ]; then
	echo "No OTP $otp_major_vsn installation in $target_dir" 1>&2
	exit 1
    fi

    shift

    otp_version=`cat "$target_dir/releases/$otp_major_vsn/OTP_VERSION"` || { echo "Not able to read $target_dir/releases/$otp_major_vsn/OTP_VERSION" 1>&2; exit 1; }
    { echo "$otp_version" | sed "s|^\([^\*]*\)\**|\1\*\*|g" > "$target_dir/releases/$otp_major_vsn/OTP_VERSION"; } 2>/dev/null || { echo "Not able to update $target_dir/OTP_VERSION" 1>&2; exit 1; }

    PATH="$ERL_TOP/bootstrap/bin:$PATH" $ERL_TOP/make/verify_runtime_dependencies -release "$otp_major_vsn" -source "$ERL_TOP" -target "$target_dir" $force "$@"

    if [ $? -ne 0 ]; then
	exit $?
    fi

    # Build all applications to target
    for app in "$@"; do
	if [ "$app" = "erts" ] && [ -d $ERL_TOP/$app ]; then
	    (cd $ERL_TOP/$app && $MAKE MAKE="$MAKE" TARGET=$TARGET \
		TESTROOT="$target_dir" release) || exit 1
	elif [ "$app" != "erts" ] && [ -d $ERL_TOP/lib/$app ]; then
	    (cd $ERL_TOP/lib/$app && $MAKE MAKE="$MAKE" TARGET=$TARGET \
		TESTROOT="$target_dir" release) || exit 1
	else
	    echo "Invalid application $app" 1>&2
	    exit 1
	fi
    done

    # If erts, kernel, stdlib or sasl is included, find versions
    for app in "$@"; do
	if  [ "$app" = "erts" ]; then
	    erts_vsn=`grep '^VSN' erts/vsn.mk | sed "s|^VSN.*=[^0-9]*\([0-9].*\)$|\1|g"`
	    update_rel=true
	elif [ "$app" = "kernel" ]; then
	    kernel_vsn=`sed "s|^KERNEL_VSN[^=]*=[^0-9]*\([0-9].*\)$|\1|g" lib/kernel/vsn.mk`
	    update_rel=true
	elif [ "$app" = "stdlib" ]; then
	    stdlib_vsn=`sed "s|^STDLIB_VSN[^=]*=[^0-9]*\([0-9].*\)$|\1|g" lib/stdlib/vsn.mk`
	    update_rel=true
	elif [ "$app" = "sasl" ]; then
	    sasl_vsn=`sed "s|^SASL_VSN[^=]*=[^0-9]*\([0-9].*\)$|\1|g" lib/sasl/vsn.mk`
	    update_rel=true
	fi
    done

    # and find the old versions for those not included
    if [ "X$update_rel" != "X" ]; then
	if [ "X$erts_vsn" = "X" ]; then
	    erts_vsns=`ls -d "$target_dir"/erts-* | sed "s|$target_dir/erts-\([0-9\.].*\)|\1|g"`
	    erts_vsn=`echo "$erts_vsns" | sort -t '.' -g | tail -n 1`
	fi
	if [ "X$kernel_vsn" = "X" ]; then
	    kernel_vsns=`ls -d "$target_dir"/lib/kernel-* | sed "s|$target_dir/lib/kernel-\([0-9\.].*\)|\1|g"`
	    kernel_vsn=`echo "$kernel_vsns" | sort -t '.' -g | tail -n 1`
	fi
	if [ "X$stdlib_vsn" = "X" ]; then
	    stdlib_vsns=`ls -d "$target_dir"/lib/stdlib-* | sed "s|$target_dir/lib/stdlib-\([0-9\.].*\)|\1|g"`
	    stdlib_vsn=`echo "$stdlib_vsns" | sort -t '.' -g | tail -n 1`
	fi
	if [ "X$sasl_vsn" = "X" ]; then
	    sasl_vsns=`ls -d "$target_dir"/lib/sasl-* | sed "s|$target_dir/lib/sasl-\([0-9\.].*\)|\1|g"`
	    sasl_vsn=`echo "$sasl_vsns" | sort -t '.' -g | tail -n 1`
	fi

        # Generate .rel, .script and .boot - to tmp dir
	start_clean="{release, {\"OTP APN 181 01\",\"$otp_major_vsn\"}, {erts, \"$erts_vsn\"},\n [{kernel,\"$kernel_vsn\"},\n  {stdlib,\"$stdlib_vsn\"}]}.\n"
	start_sasl="{release, {\"OTP APN 181 01\",\"$otp_major_vsn\"}, {erts, \"$erts_vsn\"},\n [{kernel,\"$kernel_vsn\"},\n  {stdlib,\"$stdlib_vsn\"},\n  {sasl,\"$sasl_vsn\"}]}.\n"

	tmp_dir="$target_dir/tmp";
	if [ ! -d "$tmp_dir" ]; then
	    mkdir "$tmp_dir"
	fi
	echo "$start_sasl" > "$tmp_dir/start_sasl.rel"
	echo "$start_clean" > "$tmp_dir/start_clean.rel"
	echo "$start_clean" > "$tmp_dir/no_dot_erlang.rel"

	erlc="$ERL_TOP/bootstrap/bin/erlc"
	if [ ! -x "$erlc" ]; then
	    echo "erlc not found, can not create .script and .boot files" 1>&2
	    exit 1
	fi

	$erlc -I"$target_dir"/lib/*/ebin -o$tmp_dir $tmp_dir/start_sasl.rel || exit 1
	$erlc -I"$target_dir"/lib/*/ebin -o$tmp_dir +no_warn_sasl $tmp_dir/start_clean.rel || exit 1
	$erlc -I"$target_dir"/lib/*/ebin -o$tmp_dir +no_warn_sasl +no_dot_erlang $tmp_dir/no_dot_erlang.rel || exit 1

	# Generate RELEASES file
	erl="$ERL_TOP/bootstrap/bin/erl"
	if [ ! -x "$erl" ]; then
	    echo "erl not found, can not create RELEASES file" 1>&2
	    exit 1
	fi
	"$erl" -noinput +B -eval "release_handler:create_RELEASES(\"%ERL_ROOT%\", \"$tmp_dir\", \"$tmp_dir/start_sasl.rel\", []), halt()" || exit 1

        # If all good so far, move generated files into target area
	mv "$tmp_dir/RELEASES" "$target_dir/releases/RELEASES.src"
	mv "$tmp_dir"/* "$target_dir/releases/$otp_major_vsn"
	rmdir "$tmp_dir"

	# Remove old start scripts (forces a new run of Install)
	rm -f "$target_dir"/releases/RELEASES
	rm -f "$target_dir"/bin/*.script
	rm -f "$target_dir"/bin/*.boot
	rm -f "$target_dir"/bin/erl
    fi

}


do_tests ()
{
    setup_make
    if [ X`$MAKE is_cross_configured` = Xyes ]; then
	TARGET=`$MAKE target_configured`
    fi
    if [ X"$1" = X"" ]; then
	$MAKE MAKE="$MAKE" TARGET=$TARGET release_tests || exit 1
    else
	$MAKE MAKE="$MAKE" TARGET=$TARGET TESTSUITE_ROOT=$1 release_tests || exit 1
    fi
}

do_debuginfo_win32 ()
{
    setup_make
    (cd erts/emulator && $MAKE MAKE="$MAKE" TARGET=$TARGET FLAVOR=smp debug &&\
	$MAKE MAKE="$MAKE" TARGET=$TARGET FLAVOR=plain debug) || exit 1
    if [ -z "$1" ]; then
	RELDIR=$ERL_TOP/release/$TARGET
    else
	RELDIR="$1"
    fi
    BINDIR=$ERL_TOP/bin/$TARGET
    EVSN=`grep '^VSN' erts/vsn.mk | sed 's,^VSN.*=[^0-9]*\([0-9].*\)$,@\1,g;s,^[^@].*,,g;s,^@,,g'`
    for f in beam.debug.dll beam.debug.smp.dll beam.pdb beam.smp.pdb erl.pdb werl.pdb erlexec.pdb; do
	if [ -f $BINDIR/$f ]; then
	    rm -f $RELDIR/erts-$EVSN/bin/$f
	    cp $BINDIR/$f $RELDIR/erts-$EVSN/bin/$f
	fi
    done
}

do_installer_win32 ()
{
    setup_make
    installer_dir=$ERL_TOP/erts/etc/win32/nsis
    (cd $installer_dir; $MAKE MAKE="$MAKE" TARGET=$TARGET TESTROOT=$1 release) || exit 1
}

do_copy_primary_bootstrap ()
{
    if [ "x$1" = "x" ]; then
	echo "Missing bootstrap source top" 1>&2
	exit 1
    fi
    if  [ ! -d $1 ]; then
	echo "Invalid bootstrap source top" 1>&2
	exit 1
    fi
    if [ "x$2" = "x" ]; then
	echo "Missing bootstrap root" 1>&2
	exit 1
    fi
    if  [ ! -d $2 ]; then
	echo "Invalid bootstrap root" 1>&2
	exit 1
    fi

    bootstrap=$2/bootstrap
    bootstrap_src_top=$1
    lib_src=$bootstrap_src_top/lib

    # kernel
    test -d $bootstrap/lib/kernel/ebin || mkdir -p  $bootstrap/lib/kernel/ebin
    test -d $bootstrap/lib/kernel/include || mkdir -p  $bootstrap/lib/kernel/include
    cp -f $lib_src/kernel/ebin/*.beam $bootstrap/lib/kernel/ebin
    cp -f $lib_src/kernel/include/*.hrl $bootstrap/lib/kernel/include

    # stdlib
    test -d $bootstrap/lib/stdlib/ebin || mkdir -p  $bootstrap/lib/stdlib/ebin
    test -d $bootstrap/lib/stdlib/include || mkdir -p  $bootstrap/lib/stdlib/include
    cp -f $lib_src/stdlib/ebin/*.beam $bootstrap/lib/stdlib/ebin
    cp -f $lib_src/stdlib/include/*.hrl $bootstrap/lib/stdlib/include

    # compiler
    test -d $bootstrap/lib/compiler/ebin || mkdir -p  $bootstrap/lib/compiler/ebin
    cp -f $lib_src/compiler/ebin/*.beam $bootstrap/lib/compiler/ebin

    # bootstrap bin
    if [ $bootstrap_src_top != $ERL_TOP ]; then
	test -d $bootstrap/bin || mkdir -p  $bootstrap/bin
	cp -f $bootstrap_src_top/bin/* $bootstrap/bin
    fi

}

do_save_bootstrap ()
{
    if [ ! -f $ERL_TOP/prebuilt.files ]; then
	echo "This is not a pre-built source distribution" 1>&2
	exit 1
    fi
    if  [ -d $ERL_TOP/bootstrap/lib ]; then
	echo "Bootstrap already exist" 1>&2
	exit 1
    fi

    do_copy_primary_bootstrap $ERL_TOP $ERL_TOP
}

do_remove_prebuilt_files ()
{
    do_save_bootstrap
    for file in $ERL_TOP/`cat $ERL_TOP/prebuilt.files` ; do
	rm -f $file
    done
}

# main

check_erltop

cd $ERL_TOP

determine_version_controller

# Unset ERL_FLAGS and ERL_OTP<OTP Release>_FLAGS during bootstrap to
# prevent potential problems
otp_major_vsn=`cat OTP_VERSION | sed "s|\([0-9]*\).*|\1|"`
erl_otp_flags="ERL_OTP${otp_major_vsn}_FLAGS"
unset ERL_FLAGS
unset ${erl_otp_flags}

# Target first guess, won't necessarily hold, may be changed for 
# certain parameters.
if [ X"$TARGET" = X"" ]; then
	TARGET=`$ERL_TOP/erts/autoconf/config.guess`
fi
BUILDSYS=$TARGET

case $TARGET in
    *-cygwin)
	if [ X"$BUILD_FOR_CYGWIN" = X"" ]; then
	    if [ X"$OVERRIDE_TARGET" = X"" -a X"$1" != X"env_win32" -a X"$1" != X"env_win64" -a  X"$1" != X"env_mingw32" ];then
		echo "Building for windows, you should do the " \
		    "following first:" >&2
		echo 'eval `./otp_build env_win32`' >&2
		echo 'please note that there are backticks (``) in' \
		    'the command'
		exit 1
	    fi
	fi;;
    *-mingw32)
	if [ X"$OVERRIDE_TARGET" = X"" -a X"$1" != X"env_win32" -a X"$1" != X"env_msys32" -a X"$1" != X"env_msys64"  ];then
	    echo "Building for windows, you should do the " \
		"following first:" >&2
	    echo 'eval `./otp_build env_win32`' >&2
	    echo 'or' >&2
	    echo 'eval `./otp_build env_win32 x64`' >&2
	    echo 'please note that there are backticks (``) in' \
		'the command'
	    exit 1
	fi;;
	*)
	;;
esac

if [ ! -z "$OVERRIDE_TARGET" ]; then
    TARGET="$OVERRIDE_TARGET"
fi

# Setting a bootstrap root is inherently very dangerous now that the bootstrap
# is prebuilt, avoid it if not forced by setting FORCE_BOOTSTRAP_ROOT=true!

if [ X"$FORCE_BOOTSTRAP_ROOT" != X"true" ]; then
    BOOTSTRAP_ROOT="$ERL_TOP"
else 
    if [ -z "$BOOTSTRAP_ROOT" ]; then
	BOOTSTRAP_ROOT="$ERL_TOP"
    fi
fi

if [ X"$1" = X"" ]; then 
	usage
	exit 1
fi

if [ X"$2" = X"-a" ]; then
    minus_a_flag=true
    OTP_SMALL_BUILD=
else
    OTP_SMALL_BUILD=true
    minus_a_flag=false
fi
export OTP_SMALL_BUILD

TYPE=
case "$1" in
 	all)
 		do_autoconf; 
 		do_configure; 
 		do_boot;
 		if [ $minus_a_flag = true ]; then 
 		    shift
 		fi;
 		do_release "$2";;
	setup)
		shift;
		if [ $minus_a_flag = true ]; then 
		    shift
		fi;
		do_autoconf; 
		do_configure "$@";
		do_boot;;
	lazy_setup)
		shift;
		if [ $minus_a_flag = true ]; then 
		    shift
		fi;
		do_lazy_configure "$@";
		do_boot;;
	autoconf)
		do_autoconf;;
	configure)
		shift;
		do_configure "$@";;
	lazy_configure)
		shift;
		do_lazy_configure "$@";;
	lazy_configure_clean)
		shift;
		do_lazy_configure_clean;;
	lazy_configure_target_clean)
		shift;
		do_lazy_configure_target_clean;;
	opt)
		do_boot;;
	plain|smp)
		if [ $minus_a_flag = false ]; then 
		    TYPE=opt
		fi;
		FLAVOR=$1
		if [ $FLAVOR = opt ]; then
		    FLAVOR=plain
		fi
		do_boot;;
	update_primary)
		case $version_controller in
		    git) do_primary_git "$2";;
		    none) git_required ;;
		esac ;;
	update_preloaded)
		case $version_controller in
		    git) do_update_prel_git "$2";;
		    none) git_required ;;
		esac ;;
        primary)
	        echo "Primary bootstrap is under version control since R13";
		echo "Use update_primary if you really are";
		echo "updating the primary bootstrap...";;
	boot)
		do_boot;;
        emulator)
	        do_boot_emu;;
	release)
		if [ $minus_a_flag = true ]; then 
		    shift
		fi;
		do_release "$2";;
        patch_app)
	        shift;
	        do_patch_app "$@";;
	tests)
		if [ $minus_a_flag = true ]; then 
		    shift
		fi;
		do_tests "$2";;
        remove_prebuilt_files)
		do_remove_prebuilt_files;;
        save_bootstrap)
		do_save_bootstrap;;
        copy_primary_bootstrap)
		do_copy_primary_bootstrap $2 $3;;
	installer_win32)
		if [ $minus_a_flag = true ]; then 
		    shift
		fi;
		do_installer_win32 "$2";;
	debuginfo_win32)
		if [ $minus_a_flag = true ]; then 
		    shift
		fi;
		do_debuginfo_win32 "$2";;
	env_win32)
	        if [ x"$2" = x"x64" -o x"$2" = x"amd64" ]; then
		    if [ -x /usr/bin/msysinfo ]; then
			echo_env_msys64
		    else
			echo_env_win64
		    fi
		else
		    if [ -x /usr/bin/msysinfo ]; then
			echo_env_msys32
		    else
			echo_env_win32
		    fi
		fi;;
	env_mingw32)
		echo_env_mingw32;;
	env_win64)
		echo_env_win64;;
	env_msys64)
		echo_env_msys64;;
	env_vxworks)
		echo_env_vxworks "$2";;
	env_cross)
		echo_env_cross "$2";;
        env_bootstrap)
	        echo_env_bootstrap;;
	*)
		usage;;
esac