for step in one; do 

    export SHELL=/bin/bash
    export CONFIG_SHELL=/bin/bash
    export CONFIGURE_ENV_ARGS=/bin/bash 
    export BUILDDIR=`pwd`
    export MOZ_CVS_FLAGS="-z3 -q"
    export CVSROOT=:pserver:anonymous@cvs-mirror.mozilla.org:/cvsroot
    export MOZ_CO_PROJECT=browser
    export MOZILLA_OFFICIAL=1
    #export MOZ_DEBUG_SYMBOLS=1

    if [[ -n $WINDIR ]] ; then
	os=win32

	export MOZ_TOOLS="/work/mozilla/moztools-static"

	export VSINSTALLDIR='C:\Program Files\Microsoft Visual Studio 8'
	export VS80COMNTOOLS='C:\Program Files\Microsoft Visual Studio 8\Common7\Tools\'
        export VCINSTALLDIR='C:\Program Files\Microsoft Visual Studio 8\VC'
        export FrameworkDir='C:\WINDOWS\Microsoft.NET\Framework'
        export FrameworkVersion='v2.0.50727'
        export FrameworkSDKDir='C:\Program Files\Microsoft Visual Studio 8\SDK\v2.0'

        export VSINSTALLDIR_cyg="/cygdrive/c/Program Files/Microsoft Visual Studio 8"
        export VCINSTALLDIR_cyg="/cygdrive/c/Program Files/Microsoft Visual Studio 8/VC"

        export DevEnvDir="$VSINSTALLDIR\\Common7\\IDE"
        export DevEnvDir_cyg="$VSINSTALLDIR_cyg/Common7/IDE"

        export MSVCDir="$VCINSTALLDIR"
        export MSVCDir_cyg="$VCINSTALLDIR_cyg"


        if [ -d "$MSVCDir_cyg"/PlatformSDK ] ; then
	    export PlatformSDKDir="$MSVCDir"\\PlatformSDK
	    export PlatformSDKDir_cyg="$MSVCDir_cyg"/PlatformSDK
        elif [ -d "/cygdrive/c/Program Files/Microsoft Platform SDK" ] ; then
	    export PlatformSDKDir='C:\Program Files\Microsoft Platform SDK'
	    export PlatformSDKDir_cyg='/cygdrive/c/Program Files/Microsoft Platform SDK'
        else
	    echo Can\'t find Platform SDK\!
	    break 2
        fi

        echo Platform SDK Location: $PlatformSDKDir_cyg

        if [ ! -f "$MOZ_TOOLS"/lib/libIDL-0.6_s.lib ] ; then
	    echo Can\'t find moztools\!  Edit this file and check MOZ_TOOLS path.
        fi

        echo moztools Location: $MOZ_TOOLS

        export PATH="\
$DevEnvDir_cyg:\
$PlatformSDKDir_cyg/bin:\
$MSVCDir_cyg/bin:\
$VSINSTALLDIR_cyg/Common7/Tools:\
$VSINSTALLDIR_cyg/Common7/Tools/bin:\
$MOZ_TOOLS/bin:\
$PATH"

        export INCLUDE="\
$MSVCDir\ATLMFC\INCLUDE;\
$MSVCDir\INCLUDE;\
$PlatformSDKDir\include;\
$FrameworkSDKDir\include;\
$INCLUDE"

         export LIB="\
$MSVCDir\ATLMFC\LIB;\
$MSVCDir\LIB;\
$PlatformSDKDir\lib;\
$FrameworkSDKDir\lib;\
$LIB" 

    elif uname | grep -iq darwin ; then
        os=mac
        export JS_EDITLINE=1 # required for mac
    else
        os=linux
    fi


    if [[ $1 == "debug" ]]; then
        echo setting $BUILDDIR debug
        unset BUILD_OPT
        export MOZCONFIG=$BUILDDIR/.mozconfig-debug-$os
    else
        echo setting $BUILDDIR release
        export BUILD_OPT=1
        export MOZCONFIG=$BUILDDIR/.mozconfig-$os
    fi

done