path: root/otp_build

#! /bin/sh
#
# %CopyrightBegin%
#
# Copyright Ericsson AB 2002-2010. 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

# clearmake command to use
clearmake=false

# 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 "    hybrid [-a] - build an Erlang system, hybrid flavor only"
    echo "    tests <dir> - Build testsuites to <dir>"
    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 - echo environment settings for win32 with visual C++, use with eval"
    echo "    env_mingw32 - echo environment settings for win32 with MinGW, use with eval"
    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 - build and commit a new primary bootstrap"
	    ;;
    esac

    case $version_controller in
	none)
	    ;;
	git)
	    echo ""
	    echo "update_preloaded - build and 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 ()
{
	# * 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 linux; then 
	        XX=`echo $* | grep -v able-hipe`
		if [ "$*" = "$XX" ]; then 
		    CONFIG_FLAGS="$CONFIG_FLAGS --disable-hipe" 
		fi
	fi
	if target_contains "univel-sysv4"; then
		CONFIG_FLAGS="$CONFIG_FLAGS --x-libraries=/usr/lib/X11"
	fi

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

do_autoconf ()		
{
        create_lib_configure_in

        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
}

mk_targetdir ()
{
    if [ ! -d $ERL_TOP/$TARGET ]; then
	echo "creating  $ERL_TOP/$TARGET"
	mkdir $ERL_TOP/$TARGET
    else
	echo "existing $ERL_TOP/$TARGET is used"
    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
	    cp -f "$OVERRIDE_CONFIG_CACHE_STATIC" "$OVERRIDE_CONFIG_CACHE"
	fi
    fi
}

do_configure ()
{
    setup_make
    mk_targetdir

    # 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
		  mk_targetdir
		  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

    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 "$ERL_TOP/erts/autoconf/win32.config.cache" ';'
    echo_setenv PATH "$ERL_TOP/erts/etc/win32/cygwin_tools/vc:$ERL_TOP/erts/etc/win32/cygwin_tools:$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


    echo_setenv OVERRIDE_TARGET win32 ';'
    echo_setenv MINGW_EXE_PATH $found ';'
    echo_setenv WINE_EXE_PATH $found2 ';'
    echo_setenv CC cc.sh ';'
    echo_setenv CXX cc.sh ';'
    echo_setenv AR ar.sh ';'
    echo_setenv RANLIB true ';'
    echo_setenv PATH "$ERL_TOP/erts/etc/win32/cygwin_tools/mingw:$ERL_TOP/erts/etc/win32/cygwin_tools:$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 $TARGET in
	    win32)
		MAKE=make;;
	    *)
		if [ "X$CLEARCASE_MAKE_COMPAT" = "Xgnu" -a \
		     X"$CLEARCASE_ROOT" != X"" -a \
		    -n "`lookup_prog_in_path clearmake`"  ]; then
		    clearmake="clearmake -V"
		    MAKE=$clearmake
		else 
		    if [ -n "`lookup_prog_in_path gmake`" ]; then
			MAKE=gmake
		    else
			MAKE=make
		    fi
		fi;;
       esac
    fi
    export MAKE
}
    
do_noboot_lib_and_erts ()
{
    setup_make
    EMULATORS=emulator
    if [ X`$MAKE is_cross_configured` = Xyes ]; then
	TARGET=`$MAKE target_configured`
    fi
    if [ "x$MAKE" != "x$clearmake" ]; then
	$MAKE MAKE="$MAKE" TARGET=$TARGET OTP_SMALL_BUILD=$OTP_SMALL_BUILD depend || exit 1;
    fi
    $MAKE MAKE="$MAKE" TARGET=$TARGET OTP_SMALL_BUILD=$OTP_SMALL_BUILD TYPE=$TYPE FLAVOR=$FLAVOR noboot || exit 1
}

do_primary_git ()
{
    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
    git add -A bootstrap/lib/kernel \
        bootstrap/lib/stdlib \
	bootstrap/lib/compiler \
	bootstrap/lib/orber/include \
	bootstrap/bin
    git commit --no-verify -m 'Update primary bootstrap'
}

do_update_prel_git ()
{
    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)
    git add -A $ERL_TOP/erts/preloaded/ebin/*.beam
    git commit -m 'Update preloaded modules'
}

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_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/ebin/*.app* $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/ebin/*.app* $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
    cp -f $lib_src/compiler/ebin/*.app* $bootstrap/lib/compiler/ebin

    # orber include
    test -d $bootstrap/lib/orber/include || mkdir -p  $bootstrap/lib/orber/include
    cp -f $lib_src/orber/include/* $bootstrap/lib/orber/include

    # 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_<Release>_FLAGS to prevent, for instance,
# a value of "-hybrid" to run the hybrid emulator during bootstrap.
sys_vsn=`awk '/SYSTEM_VSN = / {print $3}' < erts/vsn.mk`
sys_erl_flags="ERL_${sys_vsn}_FLAGS"
unset ERL_FLAGS
unset ${sys_erl_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_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;;
	*)
	    ;;
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|hybrid)
		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 ;;
		    none) git_required ;;
		esac ;;
	update_preloaded)
		case $version_controller in
		    git) do_update_prel_git ;;
		    none) git_required ;;
		esac ;;
        primary)
	        echo "Primary bootstrap is under version control since R13";
		echo "Use {prepare,update,commit}_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";;
	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)
		echo_env_win32;;
	env_mingw32)
		echo_env_mingw32;;
	env_vxworks)
		echo_env_vxworks "$2";;
	env_cross)
		echo_env_cross "$2";;
        env_bootstrap)
	        echo_env_bootstrap;;
	*)
		usage;;
esac