#!/bin/sh
#
# configure -- custom configure script for ScummVM.
#
# ScummVM is the legal property of its developers, whose names
# are too numerous to list here. Please refer to the COPYRIGHT
# file distributed with this source distribution.
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; either version 2
# of the License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
#

# NLS nuisances.
LC_ALL=C
export LC_ALL
LANGUAGE=C
export LANGUAGE

# Save the current environment variables for next runs
SAVED_CONFIGFLAGS=$@
SAVED_LDFLAGS=$LDFLAGS
SAVED_CXX=$CXX
SAVED_CXXFLAGS=$CXXFLAGS
SAVED_CPPFLAGS=$CPPFLAGS
SAVED_ASFLAGS=$ASFLAGS
SAVED_WINDRESFLAGS=$WINDRESFLAGS
SAVED_SDL_CONFIG=$SDL_CONFIG

# Use environment vars if set
CXXFLAGS="$CXXFLAGS $CPPFLAGS"

# Backslashes into forward slashes:
# The following OS/2 specific code is performed to deal with handling of backslashes by ksh.
# Borrowed from the Sane configure script

if test "$ac_emxsupport" != "no" -a "$ac_emxsupport" != "NO"; then
	ac_save_IFS="$IFS"
	IFS="\\"
	ac_TEMP_PATH=
	for ac_dir in $PATH; do
		IFS=$ac_save_IFS
		if test -z "$ac_TEMP_PATH"; then
			ac_TEMP_PATH="$ac_dir"
		else
			ac_TEMP_PATH="$ac_TEMP_PATH/$ac_dir"
		fi
	done
	PATH="$ac_TEMP_PATH"
	export PATH
	unset ac_TEMP_PATH
fi

set_var() {
	eval ${1}='${2}'
}

get_var() {
	eval echo \$${1}
}

append_var() {
    VAR=${1}
    shift
    if eval test -z \"\$${VAR}\" ; then
        eval ${VAR}='$@'
    else
        eval ${VAR}=\"\$${VAR} \"'$@'
    fi
}

# Add an engine: id name build subengines base-games dependencies
add_engine() {
	_engines="${_engines} ${1}"
	if test "${3}" = "no" ; then
		set_var _wip_engines "${_wip_engines} ${1}"
	fi
	set_var _engine_${1}_name "${2}"
	set_var _engine_${1}_build "${3}"
	set_var _engine_${1}_build_default "${3}"
	set_var _engine_${1}_subengines "${4}"
	set_var _engine_${1}_base "${5}"
	set_var _engine_${1}_deps "${6}"
	for sub in ${4}; do
		set_var _engine_${sub}_sub "yes"
		set_var _engine_${sub}_parent "${1}"
	done
}

# Add a feature: id name settings-list
add_feature() {
	set_var _feature_${1}_name "${2}"
	# This is a list of settings, where one must be "yes" for the feature to
	# be enabled
	set_var _feature_${1}_settings "${3}"
}

_srcdir=`dirname $0`

# Read list of engines
for i in $_srcdir/engines/*/configure.engine; do
	. "$i"
done

#
# Default settings
#
# Default lib behavior yes/no/auto
_vorbis=auto
_tremor=auto
_tremolo=no
_flac=auto
_mad=auto
_alsa=auto
_seq_midi=auto
_sndio=auto
_timidity=auto
_zlib=auto
_mpeg2=auto
_sparkle=auto
_osxdockplugin=auto
_jpeg=auto
_png=auto
_theoradec=auto
_faad=auto
_fluidsynth=auto
_opengl_mode=auto
_readline=auto
_freetype2=auto
_taskbar=auto
_updates=no
_libunity=auto
# Default option behavior yes/no
_debug_build=auto
_release_build=auto
_optimizations=auto
_use_cxx11=no
_verbose_build=no
_text_console=no
_mt32emu=yes
_build_scalers=yes
_build_hq_scalers=yes
_enable_prof=no
_global_constructors=no
_bink=yes
# Default vkeybd/keymapper/eventrec options
_vkeybd=no
_keymapper=no
_eventrec=auto
# GUI translation options
_translation=yes
# Default platform settings
_backend=sdl
_16bit=auto
_highres=auto
_savegame_timestamp=auto
_dynamic_modules=no
_elf_loader=no
_plugins_default=static
_plugin_prefix=
_plugin_suffix=
_nasm=auto
_optimization_level=
_default_optimization_level=-O2
# Default commands
_ranlib=ranlib
_strip=strip
_ar="ar cru"
_as="as"
_windres=windres
_stagingpath="staging"
_win32path="c:/scummvm"
_amigaospath="Games:ScummVM"
_staticlibpath=
_xcodetoolspath=
_sparklepath=
_sdlconfig=sdl-config
_freetypeconfig=freetype-config
_sdlpath="$PATH"
_freetypepath="$PATH"
_nasmpath="$PATH"
NASMFLAGS=""
NASM=""
_tainted_build=no
# The following variables are automatically detected, and should not
# be modified otherwise. Consider them read-only.
_posix=no
_endian=unknown
_need_memalign=yes
_have_x86=no

# Add (virtual) features
add_feature 16bit "16bit color" "_16bit"
add_feature faad "libfaad" "_faad"
add_feature flac "FLAC" "_flac"
add_feature freetype2 "FreeType2" "_freetype2"
add_feature highres "high resolution" "_highres"
add_feature mad "MAD" "_mad"
add_feature jpeg "JPEG" "_jpeg"
add_feature png "PNG" "_png"
add_feature theoradec "libtheoradec" "_theoradec"
add_feature vorbis "Vorbis file support" "_vorbis _tremor"
add_feature zlib "zlib" "_zlib"



# Directories for installing ScummVM.
# This list is closely based on what GNU autoconf does,
# although the default value for datadir differs.
# Like GNU autoconf, we distinguish datadir and datarootdir
# to make it possible to change e.g. the location of the
# man pages independently of that of the engine data files,
# which are placed inside $datadir/scummvm
prefix=NONE
exec_prefix=NONE
bindir='${exec_prefix}/bin'
libdir='${exec_prefix}/lib'
datarootdir='${prefix}/share'
datadir='${datarootdir}/scummvm'
mandir='${datarootdir}/man'
docdir='${datarootdir}/doc/scummvm'
#localedir='${datarootdir}/locale'

# For cross compiling
_host=""
_host_cpu=""
_host_vendor=""
_host_os=""
_host_alias=""

_port_mk="ports.mk"

# Use temp files in the build directory
TMPO=./scummvm-conf
TMPC=${TMPO}.cpp
TMPLOG=config.log

cc_check_no_clean() {
	echo >> "$TMPLOG"
	cat "$TMPC" >> "$TMPLOG"
	echo >> "$TMPLOG"
	echo "$CXX $LDFLAGS $CXXFLAGS $TMPC -o $TMPO$HOSTEXEEXT $@" >> "$TMPLOG"
	rm -f "$TMPO$HOSTEXEEXT"
	if test "-c" = "$*" ; then
		( $CXX $CXXFLAGS "$TMPC" -o "$TMPO$HOSTEXEEXT" "$@" ) >> "$TMPLOG" 2>&1
	else
		( $CXX $LDFLAGS $CXXFLAGS "$TMPC" -o "$TMPO$HOSTEXEEXT" "$@" ) >> "$TMPLOG" 2>&1
	fi
	TMPR="$?"
	echo "return code: $TMPR" >> "$TMPLOG"
	echo >> "$TMPLOG"
	return "$TMPR"
}

cc_check_clean() {
	rm -rf $TMPC $TMPO $TMPO.o $TMPO.dSYM $TMPO$HOSTEXEEXT "$@"
}

cc_check() {
	cc_check_no_clean "$@"
	TMPR="$?"
	cc_check_clean
	return "$TMPR"
}

cc_check_define() {
cat > $TMPC << EOF
int main(void) {
	#ifndef $1
	syntax error
	#endif
	return 0;
}
EOF
	cc_check -c
	return $?
}

gcc_get_define() {
	echo "" | $CXX -dM -E - | fgrep "$1" | head -n1 | cut -d ' ' -f 3-
}

#
# Function to provide echo -n for bourne shells that don't have it
#
echo_n() {
	printf "$@"
}

echocheck() {
	echo_n "Checking for $@... "
}

# Add a line of data to config.mk.
add_line_to_config_mk() {
	_config_mk_data="$_config_mk_data"'
'"$1"
}

# Add a line of data to config.h.
add_line_to_config_h() {
	_config_h_data="$_config_h_data"'
'"$1"
}

# Conditionally add a line of data to config.h. Takes two parameters:
# The first one can be set to 'no' to "comment out" the line, i.e.
# make it ineffective, use 'yes' otherwise.
# The second param is the line to insert.
add_to_config_h_if_yes() {
	if test "$1" = yes ; then
		add_line_to_config_h "$2"
	else
		add_line_to_config_h "/* $2 */"
	fi
}

# Conditionally add a line of data to config.mk. Takes two parameters:
# The first one can be set to 'no' to "comment out" the line, i.e.
# make it ineffective, use 'yes' otherwise.
# The second param is the line to insert.
add_to_config_mk_if_yes() {
	if test "$1" = yes ; then
		add_line_to_config_mk "$2"
	else
		add_line_to_config_mk "# $2"
	fi
}

# Conditionally add a '#define' line to config.h. Takes two parameters:
# The first one can be set to 'yes' or 'no'. If 'yes' is used, then
# the line "#define $2" is added to config.h, otherwise "#undef $2".
define_in_config_h_if_yes() {
	if test "$1" = yes ; then
		add_line_to_config_h "#define $2"
	else
		add_line_to_config_h "#undef $2"
	fi
}

# Conditionally add definitions to config.h and config.mk. Takes two parameters:
# The first one can be set to 'yes' or 'no'. If 'yes' is used, then
# the line "#define $2" is added to config.h and "$2 = 1" to config.mk.
# Otherwise "#undef $2" is added to config.h and "# $2 = 1" to config.mk
define_in_config_if_yes() {
	if test "$1" = yes ; then
		add_line_to_config_h "#define $2"
		add_line_to_config_mk "$2 = 1"
	else
		add_line_to_config_h "#undef $2"
		add_line_to_config_mk "# $2 = 1"
	fi
}

#
# Determine sdl-config
#
# TODO: small bit of code to test sdl usability
find_sdlconfig() {
	echo_n "Looking for sdl-config... "
	sdlconfigs="$SDL_CONFIG:$_sdlconfig:sdl-config:sdl11-config:sdl12-config"
	_sdlconfig=

	IFS="${IFS=   }"; ac_save_ifs="$IFS"; IFS="$SEPARATOR"
	for path_dir in $_sdlpath; do
		#reset separator to parse sdlconfigs
		IFS=":"
		for sdlconfig in $sdlconfigs; do
			if test -f "$path_dir/$sdlconfig" ; then
				_sdlconfig="$path_dir/$sdlconfig"
				echo $_sdlconfig
				# Save the prefix
				_sdlpath=$path_dir
				if test `basename $path_dir` = bin ; then
					_sdlpath=`dirname $path_dir`
				fi
				# break at first sdl-config found in path
				break 2
			fi
		done
	done

	IFS="$ac_save_ifs"

	if test -z "$_sdlconfig"; then
		echo "none found!"
		exit 1
	fi
}

#
# Determine freetype-config
#
find_freetypeconfig() {
	echo_n "Looking for freetype-config... "
	freetypeconfigs="$_freetypeconfig"
	_freetypeconfig=

	IFS="${IFS=   }"; ac_save_ifs="$IFS"; IFS="$SEPARATOR"
	for path_dir in $_freetypepath; do
		#reset separator to parse freetypeconfigs
		IFS=":"
		for freetypeconfig in $freetypeconfigs; do
			if test -f "$path_dir/$freetypeconfig" ; then
				_freetypeconfig="$path_dir/$freetypeconfig"
				echo $_freetypeconfig
				# Save the prefix
				_freetypepath=$path_dir
				if test `basename $path_dir` = bin ; then
					_freetypepath=`dirname $path_dir`
				fi
				# break at first freetype-config found in path
				break 2
			fi
		done
	done

	IFS="$ac_save_ifs"

	if test -z "$_freetypeconfig"; then
		echo "none found!"
	fi
}

#
# Determine extension used for executables
#
get_system_exe_extension() {
	case $1 in
	arm-riscos)
		_exeext=",ff8"
		;;
	3ds | dreamcast | ds | gamecube | n64 | ps2 | psp | wii)
		_exeext=".elf"
		;;
	gph-linux)
		_exeext=".gph"
		;;
	mingw* | *os2-emx | wince)
		_exeext=".exe"
		;;
	*)
		_exeext=""
		;;
	esac
}

#
# Generic options functions
#

# Show the configure help line for an option
option_help() {
	if test "${3}" != "" ; then
		tmpopt_prefix="${3}"
	else
		tmpopt_prefix="--"
	fi
	tmpopt=`echo $1 | sed 's/_/-/g'`
	option=`echo "${tmpopt_prefix}${tmpopt}                       " | sed "s/\(.\{23\}\).*/\1/"`
	echo "  ${option}  ${2}"
}

# Show an error about an unknown option
option_error() {
	echo "error: unrecognized option: $ac_option
Try \`$0 --help' for more information." >&2
	exit 1
}

# Show an error about an unknown engine
engine_option_error() {
	echo "error: unrecognized engine: $1
Try \`$0 --help' for more information." >&2
	exit 1
}

# Show an error about an invalid subengine option
subengine_option_error() {
	echo "error: this option is invalid for the subengine $1: $ac_option
Try \`$0 --help' for more information." >&2
	exit 1
}


#
# Feature handling functions
#

# Get the name of the feature
get_feature_name() {
	get_var _feature_$1_name
}

# Check whether the feature is enabled
get_feature_state() {
	for i in `get_var _feature_$1_settings`; do
		if test `get_var $i` = "yes"; then
			echo "yes"
			return
		fi
	done
	echo "no"
}


#
# Engine handling functions
#

# Get the name of the engine
get_engine_name() {
	get_var _engine_$1_name
}

# Will this engine be built?
get_engine_build() {
	get_var _engine_$1_build
}

# Was this engine set to be built by default?
get_engine_build_default() {
	get_var _engine_$1_build_default
}

# Get the subengines
get_engine_subengines() {
	get_var _engine_$1_subengines
}

# Get the dependencies
get_engine_dependencies() {
	get_var _engine_$1_deps
}

# Get the base engine game support description
get_engine_base() {
	get_var _engine_$1_base
}

# Ask if this is a subengine
get_engine_sub() {
	sub=`get_var _engine_$1_sub`
	if test -z "$sub" ; then
		sub=no
	fi
	echo $sub
}

# Get a subengine's parent (undefined for non-subengines)
get_subengine_parent() {
	get_var _engine_$1_parent
}

# Enable *all* engines
engine_enable_all() {
	for engine in $_engines; do
		set_var _engine_${engine}_build "yes"
	done
}

# Disable *all* engines
engine_disable_all() {
	for engine in $_engines; do
		set_var _engine_${engine}_build "no"
	done
}

# Enable the given engine
engine_enable() {
	# Get the parameter
	if ( echo $1 | grep ':' ) 2> /dev/null > /dev/null ; then
		eng=`echo $1 | cut -d ':' -f 1`
		opt=`echo $1 | cut -d ':' -f 2`
	else
		eng=$1
		opt=yes
	fi
	engine=`echo $eng | sed 's/-/_/g'`

	# Filter the parameter for the subengines
	if test "`get_engine_sub ${engine}`" != "no" ; then
		if test "$opt" != "yes" ; then
			subengine_option_error ${engine}
			return
		fi
		parent=`get_subengine_parent ${engine}`
		if test `get_engine_build ${parent}` = "no" ; then
			set_var _engine_${parent}_build "yes"
		fi
	fi

	if test "$opt" = "static" -o "$opt" = "dynamic" -o "$opt" = "yes" ; then
		if test "`get_engine_name ${engine}`" != "" ; then
			set_var _engine_${engine}_build "$opt"
		else
			engine_option_error ${engine}
		fi
	else
		option_error
	fi
}

# Disable the given engine
engine_disable() {
	# Filter malformed options
	if ( echo $1 | grep '=' ) 2> /dev/null > /dev/null ; then
		option_error
		return
	fi

	engine=`echo $1 | sed 's/-/_/g'`
	if test "`get_engine_name ${engine}`" != "" ; then
		set_var _engine_${engine}_build "no"
	else
		engine_option_error ${engine}
	fi
}

# Check whether the engine's dependencies are met
# If that is not the case disable the engine
check_engine_deps() {
	unmet_deps=""

	# Check whether the engine is enabled
	if test `get_engine_build $1` != "no" ; then
		# Collect unmet dependencies
		for dep in `get_engine_dependencies $1`; do
			if test `get_feature_state $dep` = "no"; then
				feature_name=`get_feature_name $dep`
				unmet_deps="${unmet_deps}${feature_name} "
			fi
		done

		# Check whether there is any unmet dependency
		if test -n "$unmet_deps"; then
			echo "WARNING: Disabling engine "`get_engine_name $1`" because the following dependencies are unmet: "$unmet_deps
			engine_disable $1
		fi
	fi
}

# Show the configure help line for a given engine
show_engine_help() {
	name=`get_engine_name $1`
	option_help "${1}" "${name} engine" "  "
	for sub in `get_engine_subengines $1`; do
		show_subengine_help $sub $1
	done
}

# Show the configure help line for a given subengine
show_subengine_help() {
	name=`get_engine_name $1`
	parent=`get_engine_name $2`
	option_help "${1}" "${name} in ${parent} engine" "  "
}

# Prepare the strings about the engines to build
prepare_engine_build_strings() {
	string=`get_engine_build_string $1 static`
	if test -n "$string" ; then
		_engines_built_static="${_engines_built_static}#$string@"
	fi

	string=`get_engine_build_string $1 dynamic`
	if test -n "$string" ; then
		_engines_built_dynamic="${_engines_built_dynamic}#$string@"
	fi

	string=`get_engine_build_string $1 no`
	if test -n "$string" ; then
		_engines_skipped="${_engines_skipped}#$string@"
	fi

	string=`get_engine_build_string $1 wip`
	if test -n "$string" ; then
		_engines_built_wip="${_engines_built_wip}#$string@"
	fi

}

# Get the string about building an engine
get_engine_build_string() {
	engine=$1
	request_status=$2
	engine_string=""
	engine_build=`get_engine_build $1`
	engine_build_default=`get_engine_build_default $engine`
	show=no

	# Convert static/dynamic to yes to ease the check of subengines
	if test $engine_build = no; then
		subengine_filter=no
	else
		subengine_filter=yes
	fi

	# Check if the current engine should be shown for the current status
	if test $engine_build = $request_status ; then
		show=yes
	else
		# Test for disabled sub-engines
		if test $request_status = no ; then
			for subeng in `get_engine_subengines $engine` ; do
				if test `get_engine_build $subeng` = no ; then
					# In this case we to display _disabled_ subengines
					subengine_filter=no
					show=yes
				fi
			done
		fi
		# Test for enabled wip sub-engines
		if test $request_status = wip ; then
			for subeng in `get_engine_subengines $engine` ; do
				if test `get_engine_build $subeng` != no -a `get_engine_build_default $subeng` = no ; then
					show=yes
				fi
			done
		fi
	fi


	# Check if it is a wip engine
	if test "$request_status" = "wip" -a "$engine_build" != "no" -a  "$engine_build_default" = no; then
		show=yes
	fi

	# The engine should be shown, build the string
	if test $show = yes ; then
		engine_string=`get_subengines_build_string $engine $subengine_filter $request_status`
		engine_string="`get_engine_name $engine` $engine_string"
	fi

	echo "$engine_string"
}

# Get the string about building subengines
get_subengines_build_string() {
	parent_engine=$1
	subengine_filter=$2
	request_status=$3
	parent_engine_build_default=`get_engine_build_default $parent_engine`
	subengine_string=""

	# If the base engine isn't built at all, no need to list subengines
	# in any of the possible categories.
	if test `get_engine_build $parent_engine` = no; then
		return
	fi

	all=yes
	# If there are no subengines, never display "[all games]" (for brevity).
	if test -z "`get_engine_subengines $parent_engine`"; then
		all=no
	fi
	# If the base engine does not fit the category we're displaying here
	# (WIP or Skipped), we should never show "[all games]"
	if test "$request_status" = wip; then
		if test $parent_engine_build_default = yes; then
			all=no
		fi
	fi
	if test "$request_status" = no; then
		# If we're here, the parent engine is built, so no need to check that.
		all=no
	fi


	# In the static/dynamic categories, also display the engine's base games.
	if test -n "`get_engine_subengines $parent_engine`" -a $request_status != no -a $request_status != wip; then
		subengine_string="[`get_engine_base $parent_engine`]"
	fi

	for subeng in `get_engine_subengines $parent_engine` ; do
		subengine_build=`get_engine_build $subeng`
		subengine_build_default=`get_engine_build_default $subeng`

		# Display this subengine if it matches the filter, unless it is
		# a stable subengine in the WIP request.
		if test $subengine_build = $subengine_filter -a \! \( "$request_status" = wip -a "$subengine_build_default" = yes \) ; then
			s="[`get_engine_name $subeng`]"
			if test -n "$subengine_string"; then
				subengine_string="$subengine_string $s"
			else
				subengine_string="$s"
			fi
		else
			all=no
		fi
	done

	# Summarize the full list, where applicable
	if test $all = yes ; then
		subengine_string="[all games]"
	fi

	echo "$subengine_string"
}

#
# Greet user
#
echo "Running ScummVM configure..."
echo "Configure run on" `date` > $TMPLOG
cat >> $TMPLOG <<EOF
Invocation command line was:
$0 $@
Saved environment variables:
LDFLAGS="$SAVED_LDFLAGS" CXX="$SAVED_CXX" CXXFLAGS="$SAVED_CXXFLAGS" CPPFLAGS="$SAVED_CPPFLAGS" ASFLAGS="$SAVED_ASFLAGS" WINDRESFLAGS="$SAVED_WINDRESFLAGS" SDL_CONFIG="$SAVED_SDL_CONFIG"
EOF

#
# Check any parameters we received
#
# TODO:
# * Change --disable-mad / --enable-mad to the way it's done in autoconf:
#  That is, --without-mad / --with-mad=/prefix/to/mad. Useful for people
#  who have Mad/Vorbis/ALSA installed in a non-standard locations.
#

for parm in "$@" ; do
	if test "$parm" = "--help" || test "$parm" = "-help" || test "$parm" = "-h" ; then
		for engine in $_engines; do
			if test `get_engine_sub $engine` = no ; then
				engines_help="$engines_help`show_engine_help $engine`
"
			fi
		done
		cat << EOF

Usage: $0 [OPTIONS]...

Configuration:
  -h, --help              display this help and exit
  --backend=BACKEND       backend to build (3ds, android, dc, dingux, ds, gcw0,
                          gph, iphone, ios7, linuxmoto, maemo, n64, null, openpandora,
                          ps2, psp, samsungtv, sdl, tizen, webos, wii, wince) [sdl]

Installation directories:
  --prefix=PREFIX         install architecture-independent files in PREFIX
                          [/usr/local]
  --exec-prefix=EPREFIX   install architecture-dependent files in EPREFIX
                          [PREFIX]

By default, \`make install' will install all the files in
\`/usr/local/bin', \`/usr/local/lib' etc.  You can specify
an installation prefix other than \`/usr/local' using \`--prefix',
for instance \`--prefix=\$HOME'.

For better control, use the options below.

Fine tuning of the installation directories:
  --bindir=DIR            user executables [EPREFIX/bin]
  --libdir=DIR            object code libraries [EPREFIX/lib]
  --datarootdir=DIR       read-only arch.-independent data root [PREFIX/share]
  --datadir=DIR           read-only architecture-independent data
                          [DATAROOTDIR/scummvm]
  --mandir=DIR            man documentation [DATAROOTDIR/man]
  --docdir=DIR            documentation root [DATAROOTDIR/doc/scummvm]

Special configuration feature:
  --host=HOST             cross-compile to target HOST (arm-linux, ...)
                          special targets: 3ds for Nintendo 3DS
                                           android-arm for Android ARM
                                           android-mips for Android MIPS
                                           android-x86 for Android x86
                                           caanoo for Caanoo
                                           dingux for Dingux
                                           raspberrypi for Raspberry Pi
                                           dreamcast for Sega Dreamcast
                                           ds for Nintendo DS
                                           gamecube for Nintendo GameCube
                                           gcw0 for GCW Zero
                                           gp2x for GP2X
                                           gp2xwiz for GP2X Wiz
                                           iphone for Apple iPhone (iOS <= 6)
                                           ios7 for Apple iPhone / iPad (iOS >= 7)
                                           linupy for Yopy PDA
                                           maemo for Nokia Maemo
                                           motoezx for MotoEZX
                                           motomagx for MotoMAGX
                                           n64 for Nintendo 64
                                           openpandora for OpenPandora
                                           ouya for OUYA
                                           ps2 for PlayStation 2
                                           ps3 for PlayStation 3
                                           psp for PlayStation Portable
                                           samsungtv for Samsung TV
                                           tizen for Samsung Tizen
                                           webos for HP Palm WebOS
                                           wii for Nintendo Wii
                                           wince for Windows CE

Game engines:
  --enable-all-engines     enable all engines, including those which are
                           broken or unsupported
  --disable-all-engines    disable all engines
  --enable-engine=<engine name>[,<engine name>...] enable engine(s) listed
  --disable-engine=<engine name>[,<engine name>...] disable engine(s) listed
  --enable-engine-static=<engine name>[,<engine name>...]
      enable engine(s) listed as static builtin (when plugins are enabled)
  --enable-engine-dynamic=<engine name>[,<engine name>...]
      enable engine(s) listed as dynamic plugin (when plugins are enabled)
    The values of <engine name> for these options are as follows:
$engines_help
Optional Features:
  --enable-c++11           build as C++11 if the compiler allows that
  --disable-debug          disable building with debugging symbols
  --enable-Werror          treat warnings as errors
  --enable-release         enable building in release mode (this activates
                           optimizations)
  --enable-release-mode    enable building in release mode (without optimizations)
  --enable-optimizations   enable optimizations
  --enable-profiling       enable profiling
  --enable-plugins         enable the support for dynamic plugins
  --default-dynamic        make plugins dynamic by default
  --disable-mt32emu        don't enable the integrated MT-32 emulator
  --disable-16bit          don't enable 16bit color support
  --disable-highres        don't enable support for high resolution engines >320x240
  --disable-savegame-timestamp don't use timestamps for blank savegame descriptions
  --disable-scalers        exclude scalers
  --disable-hq-scalers     exclude HQ2x and HQ3x scalers
  --disable-translation    don't build support for translated messages
  --disable-taskbar        don't build support for taskbar and launcher integration
  --enable-vkeybd          build virtual keyboard support
  --enable-keymapper       build key mapper support
  --enable-eventrecorder   enable event recording functionality
  --disable-eventrecorder  disable event recording functionality
  --enable-updates         build support for updates
  --enable-text-console    use text console instead of graphical console
  --enable-verbose-build   enable regular echoing of commands during build
                           process
  --disable-bink           don't build with Bink video support
  --opengl-mode=MODE       OpenGL (ES) mode to use for OpenGL output [auto]
                           available modes: auto for autodetection
                                            none for disabling any OpenGL usage
                                            any for runtime detection
                                            gl for forcing OpenGL
                                            gles for forcing OpenGL ES
                                            gles2 for forcing OpenGL ES 2
                           WARNING: only specify this manually if you know what
                           you are doing!

Optional Libraries:
  --with-alsa-prefix=DIR   Prefix where alsa is installed (optional)
  --disable-alsa           disable ALSA midi sound support [autodetect]

  --with-ogg-prefix=DIR    Prefix where libogg is installed (optional)
  --with-vorbis-prefix=DIR Prefix where libvorbis is installed (optional)
  --disable-vorbis         disable Ogg Vorbis support [autodetect]

  --with-tremor-prefix=DIR Prefix where tremor is installed (optional)
  --disable-tremor         disable tremor support [autodetect]

  --with-mad-prefix=DIR    Prefix where libmad is installed (optional)
  --disable-mad            disable libmad (MP3) support [autodetect]

  --with-flac-prefix=DIR   Prefix where libFLAC is installed (optional)
  --disable-flac           disable FLAC support [autodetect]

  --with-zlib-prefix=DIR   Prefix where zlib is installed (optional)
  --disable-zlib           disable zlib (compression) support [autodetect]

  --with-mpeg2-prefix=DIR  Prefix where libmpeg2 is installed (optional)
  --enable-mpeg2           enable mpeg2 codec for cutscenes [autodetect]

  --with-jpeg-prefix=DIR   Prefix where libjpeg is installed (optional)
  --disable-jpeg           disable JPEG decoder [autodetect]

  --with-png-prefix=DIR    Prefix where libpng is installed (optional)
  --disable-png            disable PNG decoder [autodetect]

  --with-theoradec-prefix=DIR Prefix where libtheoradec is installed (optional)
  --disable-theoradec      disable Theora decoder [autodetect]

  --with-faad-prefix=DIR   Prefix where libfaad is installed (optional)
  --disable-faad           disable AAC decoder [autodetect]

  --with-fluidsynth-prefix=DIR  Prefix where libfluidsynth is
                           installed (optional)
  --disable-fluidsynth     disable fluidsynth MIDI driver [autodetect]

  --with-sparkle-prefix=DIR   Prefix where sparkle is installed (Mac OS X only - optional)
  --disable-sparkle        disable sparkle automatic update support [Mac OS X only - autodetect]

  --disable-osx-dock-plugin disable the NSDockTilePlugin support [Mac OS X only - autodetect]

  --with-sdl-prefix=DIR    Prefix where the sdl-config script is
                           installed (optional)

  --with-freetype2-prefix=DIR Prefix where the freetype-config script is
                           installed (optional)
  --disable-freetype2     disable freetype2 TTF library usage [autodetect]

  --with-nasm-prefix=DIR   Prefix where nasm executable is installed (optional)
  --disable-nasm           disable assembly language optimizations [autodetect]

  --with-readline-prefix=DIR    Prefix where readline is installed (optional)
  --disable-readline       disable readline support in text console [autodetect]

  --with-libunity-prefix=DIR   Prefix where libunity is installed (optional)
  --disable-libunity           disable Unity launcher integration [autodetect]

  --with-sndio-prefix=DIR  Prefix where sndio is installed (optional)
  --disable-sndio          disable sndio MIDI driver [autodetect]

Some influential environment variables:
  LDFLAGS        linker flags, e.g. -L<lib dir> if you have libraries in a
                 nonstandard directory <lib dir>
  CXX            C++ compiler command
  CXXFLAGS       C++ compiler flags
  CPPFLAGS       C++ preprocessor flags, e.g. -I<include dir> if you have
                 headers in a nonstandard directory <include dir>
  ASFLAGS        assembler flags
  WINDRESFLAGS   Windows resource compiler flags

EOF
		exit 0
	fi
done # for parm in ...

for ac_option in $@; do
	case "$ac_option" in
	--disable-16bit)          _16bit=no       ;;
	--enable-highres)         _highres=yes    ;;
	--disable-highres)        _highres=no     ;;
	--disable-savegame-timestamp) _savegame_timestamp=no ;;
	--disable-scalers)        _build_scalers=no ;;
	--disable-hq-scalers)     _build_hq_scalers=no ;;
	--enable-alsa)            _alsa=yes       ;;
	--disable-alsa)           _alsa=no        ;;
	--enable-seq-midi)        _seq_midi=yes   ;;
	--disable-seq-midi)       _seq_midi=no    ;;
	--enable-sndio)           _sndio=yes      ;;
	--disable-sndio)          _sndio=no       ;;
	--enable-timidity)        _timidity=yes   ;;
	--disable-timidity)       _timidity=no    ;;
	--enable-vorbis)          _vorbis=yes     ;;
	--disable-vorbis)         _vorbis=no      ;;
	--enable-tremor)          _tremor=yes     ;;
	--disable-tremor)         _tremor=no      ;;
	--enable-flac)            _flac=yes       ;;
	--disable-flac)           _flac=no        ;;
	--enable-mad)             _mad=yes        ;;
	--disable-mad)            _mad=no         ;;
	--enable-zlib)            _zlib=yes       ;;
	--disable-zlib)           _zlib=no        ;;
	--enable-sparkle)         _sparkle=yes    ;;
	--disable-sparkle)        _sparkle=no     ;;
	--enable-osx-dock-plugin) _osxdockplugin=yes;;
	--disable-osx-dock-plugin) _osxdockplugin=no;;
	--enable-nasm)            _nasm=yes       ;;
	--disable-nasm)           _nasm=no        ;;
	--enable-mpeg2)           _mpeg2=yes      ;;
	--disable-mpeg2)          _mpeg2=no       ;;
	--disable-jpeg)           _jpeg=no        ;;
	--enable-jpeg)            _jpeg=yes       ;;
	--disable-png)            _png=no         ;;
	--enable-png)             _png=yes        ;;
	--disable-theoradec)      _theoradec=no   ;;
	--enable-theoradec)       _theoradec=yes  ;;
	--disable-faad)           _faad=no        ;;
	--enable-faad)            _faad=yes       ;;
	--disable-fluidsynth)     _fluidsynth=no  ;;
	--enable-readline)        _readline=yes   ;;
	--disable-readline)       _readline=no    ;;
	--enable-freetype2)       _freetype2=yes  ;;
	--disable-freetype2)      _freetype2=no   ;;
	--enable-taskbar)         _taskbar=yes    ;;
	--disable-taskbar)        _taskbar=no     ;;
	--enable-updates)         _updates=yes    ;;
	--disable-updates)        _updates=no     ;;
	--enable-libunity)        _libunity=yes   ;;
	--disable-libunity)       _libunity=no    ;;
	--enable-bink)            _bink=yes       ;;
	--disable-bink)           _bink=no        ;;
	--opengl-mode=*)
		_opengl_mode=`echo $ac_option | cut -d '=' -f 2`
		;;
	--enable-verbose-build)   _verbose_build=yes ;;
	--enable-plugins)         _dynamic_modules=yes ;;
	--default-dynamic)        _plugins_default=dynamic ;;
	--enable-mt32emu)         _mt32emu=yes    ;;
	--disable-mt32emu)        _mt32emu=no     ;;
	--enable-translation)     _translation=yes ;;
	--disable-translation)    _translation=no ;;
	--enable-vkeybd)          _vkeybd=yes     ;;
	--disable-vkeybd)         _vkeybd=no      ;;
	--enable-keymapper)       _keymapper=yes  ;;
	--disable-keymapper)      _keymapper=no   ;;
	--enable-eventrecorder)   _eventrec=yes  ;;
	--disable-eventrecorder)  _eventrec=no   ;;
	--enable-text-console)    _text_console=yes ;;
	--disable-text-console)   _text_console=no ;;
	--with-fluidsynth-prefix=*)
		arg=`echo $ac_option | cut -d '=' -f 2`
		FLUIDSYNTH_CFLAGS="-I$arg/include"
		FLUIDSYNTH_LIBS="-L$arg/lib"
		;;
	--with-mpeg2-prefix=*)
		arg=`echo $ac_option | cut -d '=' -f 2`
		MPEG2_CFLAGS="-I$arg/include"
		MPEG2_LIBS="-L$arg/lib"
		;;
	--with-alsa-prefix=*)
		arg=`echo $ac_option | cut -d '=' -f 2`
		ALSA_CFLAGS="-I$arg/include"
		ALSA_LIBS="-L$arg/lib"
		;;
	--with-sndio-prefix=*)
		arg=`echo $ac_option | cut -d '=' -f 2`
		SNDIO_CFLAGS="-I$arg/include"
		SNDIO_LIBS="-L$arg/lib"
		;;
	--with-ogg-prefix=*)
		arg=`echo $ac_option | cut -d '=' -f 2`
		OGG_CFLAGS="-I$arg/include"
		OGG_LIBS="-L$arg/lib"
		;;
	--with-vorbis-prefix=*)
		arg=`echo $ac_option | cut -d '=' -f 2`
		VORBIS_CFLAGS="-I$arg/include"
		VORBIS_LIBS="-L$arg/lib"
		;;
	--with-tremor-prefix=*)
		arg=`echo $ac_option | cut -d '=' -f 2`
		TREMOR_CFLAGS="-I$arg/include"
		TREMOR_LIBS="-L$arg/lib"
		;;
	--with-flac-prefix=*)
		arg=`echo $ac_option | cut -d '=' -f 2`
		FLAC_CFLAGS="-I$arg/include"
		FLAC_LIBS="-L$arg/lib"
		;;
	--with-mad-prefix=*)
		arg=`echo $ac_option | cut -d '=' -f 2`
		MAD_CFLAGS="-I$arg/include"
		MAD_LIBS="-L$arg/lib"
		;;
	--with-jpeg-prefix=*)
		arg=`echo $ac_option | cut -d '=' -f 2`
		JPEG_CFLAGS="-I$arg/include"
		JPEG_LIBS="-L$arg/lib"
		;;
	--with-png-prefix=*)
		arg=`echo $ac_option | cut -d '=' -f 2`
		PNG_CFLAGS="-I$arg/include"
		PNG_LIBS="-L$arg/lib"
		;;
	--with-theoradec-prefix=*)
		arg=`echo $ac_option | cut -d '=' -f 2`
		THEORADEC_CFLAGS="-I$arg/include"
		THEORADEC_LIBS="-L$arg/lib"
		;;
	--with-faad-prefix=*)
		arg=`echo $ac_option | cut -d '=' -f 2`
		FAAD_CFLAGS="-I$arg/include"
		FAAD_LIBS="-L$arg/lib"
		;;
	--with-zlib-prefix=*)
		arg=`echo $ac_option | cut -d '=' -f 2`
		ZLIB_CFLAGS="-I$arg/include"
		ZLIB_LIBS="-L$arg/lib"
		;;
	--with-sparkle-prefix=*)
		arg=`echo $ac_option | cut -d '=' -f 2`
		_sparklepath=$arg
		;;
	--with-readline-prefix=*)
		arg=`echo $ac_option | cut -d '=' -f 2`
		READLINE_CFLAGS="-I$arg/include"
		READLINE_LIBS="-L$arg/lib"
		;;
	--with-libunity-prefix=*)
		arg=`echo $ac_option | cut -d '=' -f 2`
		LIBUNITY_CFLAGS="-I$arg/include"
		LIBUNITY_LIBS="-L$arg/lib"
		;;
	--backend=*)
		_backend=`echo $ac_option | cut -d '=' -f 2`
		;;
	--enable-c++11)
		_use_cxx11=yes
		;;
	--disable-c++11)
		_use_cxx11=no
		;;
	--enable-debug)
		_debug_build=yes
		;;
	--disable-debug)
		_debug_build=no
		;;
	--enable-Werror)
		append_var CXXFLAGS "-Werror"
		;;
	--enable-release-mode)
		_release_build=yes
		;;
	--disable-release-mode)
		_release_build=no
		;;
	--enable-release)
		_release_build=yes
		_optimizations=yes
		;;
	--disable-release)
		_release_build=no
		_optimizations=no
		;;
	--enable-optimizations)
		_optimizations=yes
		;;
	--disable-optimizations)
		_optimizations=no
		;;
	--enable-profiling)
		_enable_prof=yes
		;;
	--with-sdl-prefix=*)
		arg=`echo $ac_option | cut -d '=' -f 2`
		_sdlpath="$arg:$arg/bin"
		;;
	--with-freetype2-prefix=*)
		arg=`echo $ac_option | cut -d '=' -f 2`
		_freetypepath="$arg:$arg/bin"
		;;
	--with-nasm-prefix=*)
		arg=`echo $ac_option | cut -d '=' -f 2`
		_nasmpath="$arg:$arg/bin"
		;;
	--with-staticlib-prefix=*)
		_staticlibpath=`echo $ac_option | cut -d '=' -f 2`
		;;
	--with-xcodetools-path=*)
		_xcodetoolspath=`echo $ac_option | cut -d '=' -f 2`
		;;
	--host=*)
		_host=`echo $ac_option | cut -d '=' -f 2`
		;;
	--prefix=*)
		prefix=`echo $ac_option | cut -d '=' -f 2`
		;;
	--exec-prefix=*)
		exec_prefix=`echo $ac_option | cut -d '=' -f 2`
		;;
	--bindir=*)
		bindir=`echo $ac_option | cut -d '=' -f 2`
		;;
	--libdir=*)
		libdir=`echo $ac_option | cut -d '=' -f 2`
		;;
	--datarootdir=*)
		datarootdir=`echo $ac_option | cut -d '=' -f 2`
		;;
	--datadir=*)
		datadir=`echo $ac_option | cut -d '=' -f 2`
		;;
	--mandir=*)
		mandir=`echo $ac_option | cut -d '=' -f 2`
		;;
	--docdir=*)
		docdir=`echo $ac_option | cut -d '=' -f 2`
		;;
	--enable-all-engines)
		engine_enable_all
		;;
	--disable-all-engines)
		engine_disable_all
		;;
	--enable-engine=* | --enable-engines=*)
		for engine_name in `echo $ac_option | cut -d '=' -f 2- | tr ',' '\n'`; do
			engine_enable "${engine_name}"
		done
		;;
	--enable-engine-static=* | --enable-engines-static=*)
		for engine_name in `echo $ac_option | cut -d '=' -f 2- | tr ',' '\n'`; do
			engine_enable "${engine_name}:static"
		done
		;;
	--enable-engine-dynamic=* | --enable-engines-dynamic=*)
		for engine_name in `echo $ac_option | cut -d '=' -f 2- | tr ',' '\n'`; do
			engine_enable "${engine_name}:dynamic"
		done
		;;
	--disable-engine=* | --disable-engines=*)
		for engine_name in `echo $ac_option | cut -d '=' -f 2 | tr ',' '\n'`; do
			engine_disable ${engine_name}
		done
		;;
	*)
		option_error
		;;
	esac;
done;

guessed_host=`$_srcdir/config.guess`
get_system_exe_extension $guessed_host
NATIVEEXEEXT=$_exeext

case $_host in
3ds)
	_host_os=3ds
	_host_cpu=arm
	_host_alias=arm-none-eabi
	;;
android | android-arm | android-v7a | android-arm-v7a | ouya)
	_host_os=android
	_host_cpu=arm
	_host_alias=arm-linux-androideabi
	;;
android-mips)
	_host_os=android
	_host_cpu=mipsel
	_host_alias=mipsel-linux-android
	;;
android-x86)
	_host_os=android
	_host_cpu=i686
	_host_alias=i686-linux-android
	;;
arm-riscos)
	_host_os=riscos
	_host_cpu=arm
	;;
raspberrypi)
	_host_os=linux
	_host_cpu=arm
	# This tuple is the one used by the official Rpi toolchain.
	# It may change in the future.
	_host_alias=arm-linux-gnueabihf
	;;
caanoo)
	_host_os=gph-linux
	_host_cpu=arm
	_host_alias=arm-none-linux-gnueabi
	;;
dingux | gcw0)
	_host_os=linux
	_host_cpu=mipsel
	_host_alias=mipsel-linux
	;;
dreamcast)
	_host_os=dreamcast
	_host_cpu=sh
	_host_alias=sh-elf
	append_var CXXFLAGS "-ml -m4-single-only"
	append_var LDFLAGS "-ml -m4-single-only"
	;;
ds)
	_host_os=ds
	_host_cpu=arm
	_host_alias=arm-eabi
	;;
gamecube)
	_host_os=gamecube
	_host_cpu=powerpc
	_host_alias=powerpc-eabi
	;;
gp2x)
	_host_os=gph-linux
	_host_cpu=arm
	_host_alias=arm-open2x-linux
	;;
gp2xwiz)
	_host_os=gph-linux
	_host_cpu=arm
	_host_alias=arm-open2x-linux
	;;
i586-mingw32msvc)
	_host_os=mingw32msvc
	_host_cpu=i586
	;;
iphone)
	_host_os=iphone
	_host_cpu=arm
	_host_alias=arm-apple-darwin9
	;;
ios7)
	_host_os=iphone
	_host_cpu=arm
	_host_alias=arm-apple-darwin11
	;;
linupy)
	_host_os=linux
	_host_cpu=arm
	;;
maemo)
	_host_os=maemo
	_host_cpu=arm
	_host_alias=arm-linux

	# The prefix is always the same on Maemo so we hardcode the default
	# here. It is still possible to define a custom prefix which is
	# needed when packaging the app with a user-specific app ID.
	test "x$prefix" = xNONE && prefix=/opt/scummvm
	# Maemo apps are installed into app-specific directories. The
	# default directory structure of ScummVM makes no sense here so we
	# hardcode Maemo specific directories here.
	datarootdir='${prefix}/share'
	datadir=/opt/scummvm/share
	docdir='${datarootdir}/doc/scummvm'
	;;
motoezx)
	_host_os=linux
	_host_cpu=arm
	_host_alias=arm-linux-gnu
	;;
motomagx)
	_host_os=linux
	_host_cpu=arm
	_host_alias=arm-linux-gnueabi
	;;
n64)
	_host_os=n64
	_host_cpu=mips
	_host_alias=mips64
	;;
neuros)
	_host_os=linux
	_host_cpu=arm
	;;
openpandora)
	_host_os=linux
	_host_cpu=arm
	_host_alias=arm-angstrom-linux-gnueabi
	;;
ppc-amigaos)
	_host_os=amigaos
	_host_cpu=powerpc
	;;
ps2)
	_host_os=ps2
	_host_cpu=mips64r5900el
	_host_alias=ee
	# PS2 bogus dirs: they actually depend on launch medium
	datadir='host:data'
	docdir='host:docs'
	;;
ps3)
	_host_os=ps3
	_host_cpu=powerpc
	_host_alias=powerpc64-ps3-elf

	# The prefix is always the same on PS3 so we hardcode the default
	# here. It is still possible to define a custom prefix which is
	# needed when packaging the app with a user-specific app ID.
	test "x$prefix" = xNONE && prefix=/dev_hdd0/game/SCUM12000/USRDIR
	# PS3 apps are installed into app-specific directories. The
	# default directory structure of ScummVM makes no sense here so we
	# hardcode PS3 specific directories here.
	datarootdir='${prefix}/data'
	datadir='${datarootdir}'
	docdir='${prefix}/doc'
	;;
psp)
	_host_os=psp
	_host_cpu=mipsallegrexel
	_host_alias=psp
	;;
samsungtv)
	_host_os=linux
	_host_cpu=arm
	_host_alias=arm-linux-gnueabi
	;;
tizen)
 	_host_os=tizen
	_host_cpu=arm
	_host_alias=arm-linux-gnueabi
	;;
webos)
	_host_os=webos
	_host_cpu=arm
	_host_alias=arm-none-linux-gnueabi
	# The prefix is always the same on WebOS so we hardcode the default
	# here. It is still possible to define a custom prefix which is
	# needed when packaging the app with a user-specific app ID.
	test "x$prefix" = xNONE && prefix=/media/cryptofs/apps/usr/palm/applications/org.scummvm.scummvm
	# WebOS apps are installed into app-specific directories. The
	# default directory structure of ScummVM makes no sense here so we
	# hardcode WebOS specific directories here.
	datarootdir='${prefix}/data'
	datadir='${datarootdir}'
	docdir='${prefix}/doc'
	;;
wii)
	_host_os=wii
	_host_cpu=powerpc
	_host_alias=powerpc-eabi
	;;
wince)
	_host_os=wince
	_host_cpu=arm
	_host_alias=arm-mingw32ce
	;;
*)
	if test -n "$_host"; then
		guessed_host=`$_srcdir/config.sub $_host`
	fi
	_host_cpu=`echo $guessed_host | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\1/'`
	_host_vendor=`echo $guessed_host | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\2/'`
	_host_os=`echo $guessed_host | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\3/'`
	;;
esac

if test -z "$_host_alias"; then
	_host_alias="$_host_cpu-$_host_os"
else
	# if _host_alias was set, default to the standard GNU tools
	_ranlib=$_host_alias-ranlib
	_strip=$_host_alias-strip
	_ar="$_host_alias-ar cru"
	_as="$_host_alias-as"
	_windres=$_host_alias-windres
fi

#
# Determine extra build flags for debug and/or release builds
#

case $_host in
caanoo | gp2x | gp2xwiz | openpandora | ps2)
	if test "$_debug_build" = auto; then
		# If you want to debug one of these platforms, use '--disable-optimizations --enable-debug'
		_debug_build=no
	fi

	if test "$_optimizations" = auto; then
		# Enable optimizations by default.
		_optimizations=yes
	fi
	;;
esac

if test "$_debug_build" != no; then
	# debug mode not explicitly disabled -> compile with debug information
	case $_host_os in
	amigaos*)
		# AmigaOS debugger uses plain stabs, with no gdb extensions.
		append_var CXXFLAGS "-gstabs"
	;;
	*)
		# Use the system default format for debug info.
		append_var CXXFLAGS "-g"
	esac
fi

if test "$_release_build" = yes; then
	# Add a define, which indicates we are doing
	# an build for a release version.
	append_var DEFINES "-DRELEASE_BUILD"
fi


#
# Determine extension used for executables
#
get_system_exe_extension $_host_os
HOSTEXEPRE=
HOSTEXEEXT=$_exeext

#
# Determine separator used for $PATH
#
case $_host_os in
os2-emx*)
	SEPARATOR=";"
	;;
*)
	SEPARATOR=":"
	;;
esac

#
# Platform specific sanity checks
#
case $_host_os in
android)
	if test -z "$ANDROID_SDK"; then
		echo "Please set ANDROID_SDK in your environment. export ANDROID_SDK=<path to Android SDK>"
		exit 1
	fi
	if test -z "$ANDROID_NDK"; then
		echo "Please set ANDROID_NDK in your environment. export ANDROID_NDK=<path to Android NDK>"
		exit 1
	fi
	;;
3ds | ds | gamecube | wii)
	if test -z "$DEVKITPRO"; then
		echo "Please set DEVKITPRO in your environment. export DEVKITPRO=<path to devkitPRO>"
		exit 1
	fi
	;;
n64)
	if test -z "$N64SDK"; then
		echo "Please set N64SDK in your environment. export N64SDK=<path to n64 sdk>"
		exit 1
	fi
	;;
ps2)
	if test -z "$PS2SDK"; then
		echo "Please set PS2SDK in your environment. export PS2SDK=<path to ps2 sdk>"
		exit 1
	fi
	;;
ps3)
	if test -z "$PS3DEV"; then
		echo "Please set PS3DEV in your environment. export PS3DEV=<path to ps3 toolchain>"
		exit 1
	fi
	if test -z "$PSL1GHT"; then
		echo "Please set PSL1GHT in your environment. export PSL1GHT=<path to psl1ght>"
		exit 1
	fi
	;;
psp)
	if test -z "$PSPDEV"; then
		PSPDEV=`psp-config --pspdev-path`
	fi
	# TODO: Should we also insist on a valid PSPDEV value?
	if test -z "$PSPSDK"; then
		PSPSDK=`psp-config --pspsdk-path`
	fi
	if test -z "$PSPSDK"; then
		echo "Please set PSPSDK in your environment. export PSPSDK=<path to psp sdk>"
		exit 1
	fi
	;;
tizen)
	if test -z "$TIZEN_ROOTSTRAP"; then
		echo "Please set TIZEN_ROOTSTRAP in your environment. export TIZEN_ROOTSTRAP=<path to Tizen SDK device profile>"
		exit 1
	fi
	;;
webos)
	if test -z "$WEBOS_SDK"; then
		echo "Please set WEBOS_SDK in your environment. export WEBOS_SDK=<path to WebOS SDK>"
		exit 1
	fi
	if test -z "$WEBOS_PDK"; then
		echo "Please set WEBOS_PDK in your environment. export WEBOS_PDK=<path to WebOS PDK>"
		exit 1
	fi
	;;
*)
	;;
esac

#
# Determine the C++ compiler
#
echo_n "Looking for C++ compiler... "

# Check whether the given command is a working C++ compiler
test_compiler() {
	cat > tmp_cxx_compiler.cpp << EOF
	class Foo { int a; };
	int main(int argc, char **argv) {
		Foo *a = new Foo(); delete a; return 0;
	}
EOF

	echo "testing compiler: $1" >> "$TMPLOG"

	if test -n "$_host"; then
		# In cross-compiling mode, we cannot run the result
		eval "$1 $CXXFLAGS -o $TMPO.o -c tmp_cxx_compiler.cpp" 2> /dev/null && cc_check_clean tmp_cxx_compiler.cpp
	else
		eval "$1 $CXXFLAGS $LDFLAGS -o $TMPO$HOSTEXEEXT tmp_cxx_compiler.cpp" 2> /dev/null && eval "$TMPO$HOSTEXEEXT 2> /dev/null" && cc_check_clean tmp_cxx_compiler.cpp
	fi
}

# Prepare a list of candidates for the C++ compiler
if test -n "$CXX" && test_compiler "$CXX"; then
	# Use the compiler specified in CXX
	echo $CXX
else
	if test -n "$_host"; then
		compilers="$_host_alias-g++ $_host_alias-c++ $_host-g++ $_host-c++"
	else
		compilers="g++ c++"
	fi

	# Iterate over all candidates, pick the first working one
	CXX=
	for compiler in $compilers; do
		if test_compiler $compiler; then
			echo "success testing compiler: $compiler" >> "$TMPLOG"
			CXX=$compiler
			echo $CXX
			break
		else
			echo "failure testing compiler: $compiler" >> "$TMPLOG"
		fi
	done
fi

if test -z "$CXX"; then
	echo "none found!"
	exit 1
fi

# By default, use the C++ compiler as linker
LD=$CXX

#
# Determine the compiler version
#
echocheck "compiler version"

# Some compilers pretend to be gcc to ease compatibility with
# common Linux etc. programs. We first check for some of these here.
have_gcc=no
cc_check_define __GNUC__ && have_gcc=yes
have_icc=no
cc_check_define __INTEL_COMPILER && have_icc=yes
have_clang=no
cc_check_define __clang__ && have_clang=yes

if test "$have_icc" = yes; then
	add_line_to_config_mk 'HAVE_ICC = 1'

	# Make ICC error out on unknown command line options instead of printing
	# a warning. This is for example required to make the -Wglobal-destructors
	# detection work correctly.
	append_var CXXFLAGS "-diag-error 10006,10148"

	# ICC doesn't accept all gcc options, so we disable have_gcc, even if
	# ICC does have the gcc-compatibility defines.
	have_gcc=no
fi

if test "$have_clang" = yes; then
	add_line_to_config_mk 'HAVE_CLANG = 1'

	# clang does accept all gcc options we use, so we keep have_gcc
fi

if test "$have_gcc" = yes; then
	add_line_to_config_mk 'HAVE_GCC = 1'
	_cxx_major=`gcc_get_define __GNUC__`
	_cxx_minor=`gcc_get_define __GNUC_MINOR__`
	cxx_version="`( $CXX -dumpversion ) 2>&1`"

	if test "$have_clang" = yes; then
		# Clang sets a gcc version number for compatibility.
		# We keep that as _cxx_minor/_cxx_major for later
		# compiler version checks.

		# For the version reported in the configure log (cxx_version),
		# we get the actual clang version.
		cxx_version=`gcc_get_define __clang_version__`
		cxx_version="`echo "${cxx_version}" | sed -e 's/"\([^ ]*\) .*/\1/'`"
		cxx_version="clang $cxx_version, ok"
	elif test "$_cxx_major" -eq 2 && test "$_cxx_minor" -ge 95 || \
	   test "$_cxx_major" -gt 2 ; then
		cxx_version="$cxx_version, ok"
		cxx_verc_fail=no
	else
		cxx_version="$cxx_version, bad"
		cxx_verc_fail=yes
	fi
elif test "$have_icc" = yes; then
	cxx_version="`( $CXX -dumpversion ) 2>/dev/null`"
	_cxx_major="`echo "${cxx_version}" | sed -ne 's/\([0-9][0-9]*\)\..*/\1/gp'`"
	_cxx_minor="`echo "${cxx_version}" | sed -ne 's/[0-9][0-9]*\.\([0-9][0-9]*\)/\1/gp'`"
	cxx_version="ICC $cxx_version, ok"
else
	# TODO: Big scary warning about unsupported compilers
	cxx_version=`( $CXX -version ) 2>&1`
	if test "$?" -eq 0; then
		cxx_version="`echo "${cxx_version}" | sed -ne 's/^.*[^0-9]\([0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\).*$/\1/gp'`"
		if test -z "${cxx_version}"; then
			cxx_version="not found"
			cxx_verc_fail=yes
		fi
		echo non-gcc compiler version ${cxx_version}
	else
		cxx_version="not found"
		cxx_verc_fail=yes
		echo found non-gcc compiler version ${cxx_version}
	fi

	case $_host_os in
		irix*)
			case $cxx_version in
				7.4.4*)
					# We just assume this is SGI MIPSpro
					_cxx_major=7
					_cxx_minor=4
					cxx_verc_fail=no
					add_line_to_config_mk 'CXX_UPDATE_DEP_FLAG = -MDupdate "$(*D)/$(DEPDIR)/$(*F).d"'
					add_line_to_config_mk '-include Makedepend'
					;;
				*)
					cxx_version="$cxx_version, bad"
					cxx_verc_fail=yes
					;;
			esac
			;;
		*)
			cxx_version="$cxx_version, bad"
			cxx_verc_fail=yes
			;;
	esac
fi

echo "$cxx_version"

#
# Bail out now if no useable compiler was found.
#
if test "$cxx_verc_fail" = yes ; then
	echo
	echo "The version of your compiler is not supported at this time"
	echo "Please ensure you are using GCC >= 2.95"
	exit 1
fi

#
# Check whether the compiler supports C++11
#
have_cxx11=no
cat > $TMPC << EOF
int main(int argc, char *argv[]) { if (argv == nullptr) return -1; else return 0; }
EOF
cc_check -std=c++11 && have_cxx11=yes
if test "$_use_cxx11" = "yes" ; then
	_use_cxx11=$have_cxx11
fi

#
# Setup compiler specific CXXFLAGS now that we know the compiler version.
# Foremost, this means enabling various warnings.
# In addition, we set CXX_UPDATE_DEP_FLAG for GCC >= 3.0 and for ICC.
#
if test "$have_gcc" = yes ; then
	if test "$_cxx_major" -ge "3" ; then
		# Try to use ANSI mode when C++11 is disabled.
		if test "$_use_cxx11" = "no" ; then
			case $_host_os in
			# newlib-based system include files suppress non-C89 function
			# declarations under __STRICT_ANSI__
			3ds | amigaos* | android | dreamcast | ds | gamecube | mingw* | n64 | psp | ps2 | ps3 | tizen | wii | wince )
				;;
			*)
				append_var CXXFLAGS "-ansi"
				;;
			esac
		fi
		append_var CXXFLAGS "-W -Wno-unused-parameter"
		add_line_to_config_mk 'HAVE_GCC3 = 1'
		add_line_to_config_mk 'CXX_UPDATE_DEP_FLAG = -MMD -MF "$(*D)/$(DEPDIR)/$(*F).d" -MQ "$@" -MP'
	fi;

	if test "$_cxx_major" -eq 4 && test "$_cxx_minor" -ge 3 || \
	   test "$_cxx_major" -gt 4 ; then
		append_var CXXFLAGS "-Wno-empty-body"
	else
		append_var CXXFLAGS "-Wconversion"
	fi;
elif test "$have_icc" = yes ; then
	add_line_to_config_mk 'CXX_UPDATE_DEP_FLAG = -MMD -MF "$(*D)/$(DEPDIR)/$(*F).d" -MQ "$@" -MP'
fi;

#
# Update status about C++11 mode
#
echo_n "Building as C++11... "
if test "$_use_cxx11" = "yes" ; then
	append_var CXXFLAGS "-std=c++11"
fi
echo $_use_cxx11

# By default, we add -pedantic to the CXXFLAGS to catch some potentially
# non-portable constructs, like use of GNU extensions.
# However, some platforms use GNU extensions in system header files, so
# for these we must not use -pedantic.
case $_host_os in
android | gamecube | psp | tizen | wii | webos)
	;;
*)
	# ICC does not support pedantic, while GCC and clang do.
	if test "$have_icc" = no ; then
		# We *do* want the 'long long' extension.
		append_var CXXFLAGS "-pedantic -Wno-long-long"
	fi
	;;
esac

# If possible, we want to use -Wglobal-constructors
# However, not all compilers support that, so check whether the active one does.
echocheck "whether -Wglobal-constructors work"
cat > $TMPC << EOF
int main() { return 0; }
EOF
cc_check -Wglobal-constructors && _global_constructors=yes

if test "$_global_constructors" = yes; then
	append_var CXXFLAGS "-Wglobal-constructors"
fi
echo $_global_constructors

echo_n "Checking for $_host_alias-strings... " >> "$TMPLOG"
if `which $_host_alias-strings >/dev/null 2>&1`; then
_strings=$_host_alias-strings
echo yes >> "$TMPLOG"
else
_strings=strings
echo no >> "$TMPLOG"
fi

#
# Check for endianness
#
echo_n "Checking endianness... "
cat > tmp_endianness_check.cpp << EOF
unsigned short ascii_mm[] = { 0x4249, 0x4765, 0x6E44, 0x6961, 0x6E53, 0x7953, 0 };
unsigned short ascii_ii[] = { 0x694C, 0x5454, 0x656C, 0x6E45, 0x6944, 0x6E61, 0 };
void _ascii() { char* s = (char*) ascii_mm; s = (char*) ascii_ii; }
unsigned short ebcdic_ii[] = { 0x89D3, 0xE3E3, 0x8593, 0x95C5, 0x89C4, 0x9581, 0 };
unsigned short ebcdic_mm[] = { 0xC2C9, 0xC785, 0x95C4, 0x8981, 0x95E2, 0xA8E2, 0 };
void _ebcdic() { char* s = (char*) ebcdic_mm; s = (char*) ebcdic_ii; }
int main() { _ascii (); _ebcdic (); return 0; }
EOF
$CXX $CXXFLAGS -c -o $TMPO.o tmp_endianness_check.cpp
if $_strings $TMPO.o | grep BIGenDianSyS >/dev/null; then
	_endian=big
elif $_strings $TMPO.o | grep LiTTleEnDian >/dev/null; then
	_endian=little
fi
echo $_endian;
cc_check_clean tmp_endianness_check.cpp

case $_endian in
	big)
		add_line_to_config_h '#undef SCUMM_LITTLE_ENDIAN'
		add_line_to_config_h '#define SCUMM_BIG_ENDIAN'
		;;
	little)
		add_line_to_config_h '#define SCUMM_LITTLE_ENDIAN'
		add_line_to_config_h '#undef SCUMM_BIG_ENDIAN'
		;;
	*)
		exit 1
		;;
esac

#
# Determine a data type with the given length
#
find_type_with_size() {
	for datatype in int short char long "long long" __int64 "long long int" unknown; do
		cat > tmp_find_type_with_size.cpp << EOF
typedef $datatype ac__type_sizeof_;
int main() {
	static int test_array [1 - 2 * !(((long int) (sizeof (ac__type_sizeof_))) == $1)];
	test_array [0] = 0;
	return 0;
}
EOF
		if $CXX $CXXFLAGS -c -o $TMPO.o tmp_find_type_with_size.cpp 2>/dev/null ; then
			break
		else
			if test "$datatype" = "unknown"; then
				echo "couldn't find data type with $1 bytes"
				exit 1
			fi
			continue
		fi
	done
	cc_check_clean tmp_find_type_with_size.cpp
	echo $datatype
}

#
# Check whether the system is 32-bit
#
pointer_is_32bit() {
	cat > tmp_pointer_is_32bit.cpp << EOF
int main() {
	static int test_array[1 - 2 * !(sizeof(void *) == 4)];
	test_array[0] = 0;
	return 0;
}
EOF
	$CXX $CXXFLAGS -c -o $TMPO.o tmp_pointer_is_32bit.cpp 2>/dev/null
	status=$?
	cc_check_clean tmp_pointer_is_32bit.cpp
	return $status
}

echo_n "Checking 64-bitness... "
pointer_is_32bit
if test $? -eq 0; then
	type_ptr=int32
	echo "no"
	add_line_to_config_h "/* #define SCUMM_64BITS */"
else
	type_ptr=int64
	echo "yes"
	add_line_to_config_h "#define SCUMM_64BITS"
fi

#
# Determine data type sizes
#
echo_n "Type with 1 byte... "
type_1_byte=`find_type_with_size 1`
TMPR="$?"
echo "$type_1_byte"
test $TMPR -eq 0 || exit 1	# check exit code of subshell

echo_n "Type with 2 bytes... "
type_2_byte=`find_type_with_size 2`
TMPR="$?"
echo "$type_2_byte"
test $TMPR -eq 0 || exit 1	# check exit code of subshell

echo_n "Type with 4 bytes... "
type_4_byte=`find_type_with_size 4`
TMPR="$?"
echo "$type_4_byte"
test $TMPR -eq 0 || exit 1	# check exit code of subshell

echo_n "Type with 8 bytes... "
type_8_byte=`find_type_with_size 8`
TMPR="$?"
echo "$type_8_byte"
if test $TMPR -eq 0; then
	_def_64bit_type_signed="typedef signed $type_8_byte int64;"
	_def_64bit_type_unsigned="typedef unsigned $type_8_byte uint64;"
fi
# force cleanup after check for 8 bytes type
cc_check_clean tmp_find_type_with_size.cpp

#
# Check whether memory alignment is required
#
# For some CPU types, unaligned memory access is either not supported at
# all (and so leads to a crash), requires a super-slow emulation via an
# exception handler, or just results in incorrect results.
# On the other hand, accessing data in a manner that works regardless of
# alignment can be a lot slower than regular access, so we don't want
# to use it if we don't have to.
#
# So we do the following: For CPU families where we know whether unaligned
# access is safe & fast, we enable / disable unaligned access accordingly.
# Otherwise, we just disable memory alignment.
#
# NOTE: In the past, for non-cross compiled builds, we would also run some code
# which would try to test whether unaligned access worked or not. But this test
# could not reliably determine whether unaligned access really worked in all
# situations (and across different implementations of the target CPU arch), nor
# whether it was fast (as opposed to slowly emulated by fault handlers). Hence,
# we do not use this approach anymore.
#
# NOTE: The only kinds of unaligned access we allow are for 2 byte and 4
# byte loads / stores. No promises are made for bigger sizes, such as 8
# or 16 byte loads, for which architectures may behave differently than
# for the smaller sizes.
echo_n "Alignment required... "
case $_host_cpu in
	i[3-6]86 | amd64 | x86_64 | powerpc*)
		# Unaligned access should work
		_need_memalign=no
		;;
	alpha* | arm* | bfin* | hp* | mips* | sh* | sparc* | ia64 | nv1*)
		# Unaligned access is not supported or extremely slow.
		_need_memalign=yes
		;;
	*)
		# Status of unaligned access is unknown, so assume the worst.
		_need_memalign=yes
		;;
esac
echo "$_need_memalign"

define_in_config_h_if_yes $_need_memalign 'SCUMM_NEED_ALIGNMENT'

#
# Check the CPU architecture
#
echo_n "Checking host CPU architecture... "
case $_host_cpu in
	arm*)
		echo "ARM"
		case $_host_alias in
			# Apple's as does not support the syntax we use in our ARM
			# assembly. We simply do not enable it.
			arm-apple-darwin9)
				;;
			arm-apple-darwin10)
				;;
			arm-apple-darwin11)
				;;

			*)
				define_in_config_if_yes yes 'USE_ARM_SCALER_ASM'
				# FIXME: The following feature exhibits a bug. It produces distorted
				# sound since 9003ce517ff9906b0288f9f7c02197fd091d4554. The ARM
				# assembly will need to be properly adapted to the changes to the C
				# code in 8f5a7cde2f99de9fef849b0ff688906f05f4643e.
				# See bug #6957: "AUDIO: ARM ASM sound code causes distorted audio on 32 bit armv6"
				#define_in_config_if_yes yes 'USE_ARM_SOUND_ASM'
				define_in_config_if_yes yes 'USE_ARM_SMUSH_ASM'
				define_in_config_if_yes yes 'USE_ARM_GFX_ASM'
				# FIXME: The following feature exhibits a bug during the intro scene of Indy 4
				# (on Pandora and iPhone at least)
				#define_in_config_if_yes yes 'USE_ARM_COSTUME_ASM'
				;;
		esac

		append_var DEFINES "-DARM_TARGET"
		;;
	i[3-6]86)
		echo "x86"
		_have_x86=yes
		define_in_config_h_if_yes $_have_x86 'HAVE_X86'
		;;
	mips*)
		echo "MIPS"
		append_var DEFINES "-DMIPS_TARGET"
		;;
	powerpc*)
		echo "PowerPC"
		append_var DEFINES "-DPPC_TARGET"
		;;
	amd64 | x86_64)
		echo "x86_64"
		;;
	*)
		echo "unknown ($_host_cpu)"
		;;
esac


#
# Determine build settings
#
echo_n "Checking hosttype... "
echo $_host_os
case $_host_os in
	3ds)
		_optimization_level=-O2
		append_var DEFINES "-D__3DS__"
		append_var DEFINES "-DARM"
		append_var DEFINES "-DARM11"
		append_var CXXFLAGS "-march=armv6k"
		append_var CXXFLAGS "-mtune=mpcore"
		append_var CXXFLAGS "-mword-relocations"
		append_var CXXFLAGS "-mfloat-abi=hard"
		append_var CXXFLAGS "-ffunction-sections"
		append_var CXXFLAGS "-fomit-frame-pointer"
		append_var CXXFLAGS "-I$DEVKITPRO/libctru/include"
		append_var CXXFLAGS "-I$DEVKITPRO/portlibs/3ds/include"
		if test "$_dynamic_modules" = no ; then
			append_var LDFLAGS "-Wl,--gc-sections"
		else
			append_var LDFLAGS "-Wl,--no-gc-sections"
		fi
		append_var LDFLAGS "-L$DEVKITPRO/portlibs/3ds/lib"
		append_var LIBS "-lcitro3d -lctru"
		;;
	amigaos*)
		append_var LDFLAGS "-Wl,--export-dynamic"
		append_var LDFLAGS "-L/sdk/local/newlib/lib"
		# We have to use 'long' for our 4 byte typedef because AmigaOS already typedefs (u)int32
		# as (unsigned) long, and consequently we'd get a compiler error otherwise.
		type_4_byte='long'
		# Supress format warnings as the long 4 byte causes noisy warnings.
		append_var CXXFLAGS "-Wno-format"
		add_line_to_config_mk 'AMIGAOS = 1'
		_port_mk="backends/platform/sdl/amigaos/amigaos.mk"
		;;
	android)
		case $_host in
			android | android-arm)
				append_var CXXFLAGS "-march=armv5te"
				append_var CXXFLAGS "-mtune=xscale"
				append_var CXXFLAGS "-msoft-float"
				ABI="armeabi"
				ANDROID_PLATFORM=4
				ANDROID_PLATFORM_ARCH="arm"
				;;
			android-v7a | android-arm-v7a)
				append_var CXXFLAGS "-march=armv7-a"
				append_var CXXFLAGS "-mfloat-abi=softfp"
				append_var CXXFLAGS "-mfpu=vfp"
				append_var LDFLAGS "-Wl,--fix-cortex-a8"
				ABI="armeabi-v7a"
				ANDROID_PLATFORM=4
				ANDROID_PLATFORM_ARCH="arm"
				;;
			android-mips)
				append_var CXXFLAGS "-march=mips32"
				append_var CXXFLAGS "-mtune=mips32"
				ABI="mips"
				# Platform version 9 is needed as earlier versions of platform do not support this arch.
				ANDROID_PLATFORM=9
				ANDROID_PLATFORM_ARCH="mips"
				;;
			android-x86)
				append_var CXXFLAGS "-march=i686"
				append_var CXXFLAGS "-mtune=i686"
				ABI="x86"
				# Platform version 9 is needed as earlier versions of platform do not support this arch.
				ANDROID_PLATFORM=9
				ANDROID_PLATFORM_ARCH="x86"
				;;
			ouya)
				append_var CXXFLAGS "-march=armv7-a"
				append_var CXXFLAGS "-mtune=cortex-a9"
				append_var CXXFLAGS "-mfloat-abi=softfp"
				append_var CXXFLAGS "-mfpu=neon"
				ABI="armeabi-v7a"
				ANDROID_PLATFORM=4
				ANDROID_PLATFORM_ARCH="arm"
				;;
		esac

		# Setup platform version and arch
		append_var CXXFLAGS "--sysroot=$ANDROID_NDK/platforms/android-$ANDROID_PLATFORM/arch-$ANDROID_PLATFORM_ARCH"
		append_var LDFLAGS "--sysroot=$ANDROID_NDK/platforms/android-$ANDROID_PLATFORM/arch-$ANDROID_PLATFORM_ARCH"

		append_var CXXFLAGS "-fpic"
		append_var CXXFLAGS "-ffunction-sections"
		append_var CXXFLAGS "-funwind-tables"
		if test "$_debug_build" = yes; then
			append_var CXXFLAGS "-fno-omit-frame-pointer"
			append_var CXXFLAGS "-fno-strict-aliasing"
		else
			append_var CXXFLAGS "-fomit-frame-pointer"
			append_var CXXFLAGS "-fstrict-aliasing"
		fi
		append_var CXXFLAGS "-finline-limit=300"
		_optimization_level=-Os

		if test "$_host" = android -o "$_host" = android-arm; then
			append_var CXXFLAGS "-mthumb-interwork"
			# FIXME: Why is the following in CXXFLAGS and not in DEFINES? Change or document this.
			append_var CXXFLAGS "-D__ARM_ARCH_5__"
			append_var CXXFLAGS "-D__ARM_ARCH_5T__"
			append_var CXXFLAGS "-D__ARM_ARCH_5E__"
			append_var CXXFLAGS "-D__ARM_ARCH_5TE__"
		fi

		# surpress 'mangling of 'va_list' has changed in GCC 4.4' warning
		append_var CXXFLAGS "-Wno-psabi"

		if test "$_host" = android -o "$_host" = android-arm; then
			append_var LDFLAGS "-mthumb-interwork"
		fi

		append_var LDFLAGS "-L$ANDROID_NDK/sources/cxx-stl/gnu-libstdc++/`$CXX -dumpversion`/libs/$ABI/"
		append_var LIBS "-lsupc++"
		add_line_to_config_mk "ANDROID_SDK = $ANDROID_SDK"
		if test -d "$ANDROID_SDK"/build-tools; then
			_build_tools_version=`cd "$ANDROID_SDK"/build-tools && ls -1 | sort -rn | head -1`
			add_line_to_config_mk "ANDROID_BTOOLS = build-tools/$_build_tools_version"
		else
			add_line_to_config_mk "ANDROID_BTOOLS = platform-tools"
		fi
		_seq_midi=no
		;;
	beos*)
		append_var DEFINES "-DSYSTEM_NOT_SUPPORTING_D_TYPE"
		# Needs -lbind -lsocket for the timidity MIDI driver
		LDFLAGS="-L/boot/home/config/lib"
		CFLAGS="-I/boot/home/config/include"
		append_var CXXFLAGS "-fhuge-objects"
		append_var LIBS "-lbind -lsocket"
		_seq_midi=no
		;;
	cygwin*)
		echo ERROR: Cygwin building is not supported by ScummVM anymore. Consider using MinGW.
		exit 1
		;;
	darwin*)
		# Pass -mlongcall to gcc so that it emits long calls
		# which will allow for calls larger than 32MB. The linker
		# will discard the calls if they are not needed, but we
		# need to ensure the compiler emits them in the first place.
		case $_host_cpu in
		powerpc*)
			append_var CFLAGS "-mlongcall"
			append_var CXXFLAGS "-mlongcall"
			;;
		esac

		append_var DEFINES "-DMACOSX"
		append_var LIBS "-framework AudioUnit -framework AudioToolbox -framework Carbon -framework CoreMIDI"
		# SDL2 doesn't seem to add Cocoa for us.
		append_var LIBS "-framework Cocoa"
		add_line_to_config_mk 'MACOSX = 1'

		# Now we may have MacPorts or Fink installed
		# Which put libraries and headers in non-standard places
		# Checking them here

		# MacPorts
		# There is no way to get the prefix, so implementing a hack here
		macport_version=`port version 2>/dev/null`
		if test "$?" -eq 0; then
			macport_version="`echo "${macport_version}" | sed -ne 's/Version: \([0-9]\.[0-9]\.[0-9]\)/\1/gp'`"
			echo_n "You seem to be running MacPorts version ${macport_version}..."

			macport_prefix=`which port`
			# strip off /bin/port from /opt/local/bin/port
			macport_prefix=`dirname ${macport_prefix}`
			macport_prefix=`dirname ${macport_prefix}`

			echo "adding ${macport_prefix} to paths"

			LDFLAGS="-L${macport_prefix}/lib $LDFLAGS"
			CXXFLAGS="-I${macport_prefix}/include $CXXFLAGS"

			if test -z "$_staticlibpath"; then
				_staticlibpath=${macport_prefix}
				echo "Set staticlib-prefix to ${_staticlibpath}"
			fi
		fi

		# Fink
		# There is no way to get the prefix, so implementing a hack here
		fink_version=`fink -V 2>/dev/null`
		if test "$?" -eq 0; then
			fink_version="`echo "${fink_version}" | sed -ne 's/Package manager version: \([0-9.]*\)/\1/gp'`"
			echo_n "You seem to be running Fink version ${fink_version}..."

			fink_prefix=`which fink`
			# strip off /bin/fink from /sw/bin/port
			fink_prefix=`dirname ${fink_prefix}`
			fink_prefix=`dirname ${fink_prefix}`

			echo "adding ${fink_prefix} to paths"

			LDFLAGS="-L${fink_prefix}/lib $LDFLAGS"
			CXXFLAGS="-I${fink_prefix}/include $CXXFLAGS"

			if test -z "$_staticlibpath"; then
				_staticlibpath=${fink_prefix}
				echo "Set staticlib-prefix to ${_staticlibpath}"
			fi
		fi

		# Homebrew
		brew_version=`brew -v 2>/dev/null`
		if test "$?" -eq 0; then
			brew_version="`echo "${brew_version}" | sed -ne 's/Homebrew \([0-9.]*\)/\1/gp'`"
			echo_n "You seem to be running Homebrew version ${brew_version}..."

			brew_prefix=`brew --prefix`

			echo "adding ${brew_prefix} to paths"

			LDFLAGS="-L${brew_prefix}/lib $LDFLAGS"
			CXXFLAGS="-I${brew_prefix}/include $CXXFLAGS"

			if test -z "$_staticlibpath"; then
				_staticlibpath=${brew_prefix}
				echo "Set staticlib-prefix to ${_staticlibpath}"
			fi
		fi

		# If _staticlibpath is not set yet try first /sw (fink) then /usr/local
		# (the macports case is handled above).
		if test -z "$_staticlibpath"; then
			if test -d "/sw"; then
				_staticlibpath=/sw
				echo "Set staticlib-prefix to ${_staticlibpath}"
			elif test -d "/usr/local"; then
				_staticlibpath=/usr/local
				echo "Set staticlib-prefix to ${_staticlibpath}"
			else
				echo "Could not determine prefix for static libraries"
			fi
		fi

		# If _xcodetoolspath is not set yet use xcode-select to get the path
		if test -z "$_xcodetoolspath"; then
			_xcodetoolspath=`xcode-select -print-path`/Tools
			if test -d "$_xcodetoolspath"; then
				echo "Set xcodetools-path to ${_xcodetoolspath}"
			else
				_xcodetoolspath=
				echo "Could not determine path for Xcode Tools"
			fi
		fi
		;;
	dreamcast)
		append_var DEFINES "-D__DC__"
		append_var DEFINES "-DNONSTANDARD_PORT"
		;;
	ds)
		append_var DEFINES "-D__DS__"
		append_var DEFINES "-DNDS"
		append_var DEFINES "-DARM9"
		append_var DEFINES "-DARM"
		append_var DEFINES "-DNONSTANDARD_PORT"
		append_var CXXFLAGS "-isystem $DEVKITPRO/libnds/include"
		append_var CXXFLAGS "-isystem $DEVKITPRO/devkitARM/arm-eabi/include"
		append_var CXXFLAGS "-mcpu=arm9tdmi"
		append_var CXXFLAGS "-mtune=arm9tdmi"
		append_var CXXFLAGS "-fomit-frame-pointer"
		append_var CXXFLAGS "-mthumb-interwork"
		append_var CXXFLAGS "-ffunction-sections"
		append_var CXXFLAGS "-fdata-sections"
		append_var CXXFLAGS "-fno-strict-aliasing"
		append_var CXXFLAGS "-fuse-cxa-atexit"
		append_var LDFLAGS "-specs=ds_arm9.specs"
		append_var LDFLAGS "-mthumb-interwork"
		append_var LDFLAGS "-mno-fpu"
		append_var LDFLAGS "-Wl,-Map,map.txt"
		if test "$_dynamic_modules" = no ; then
			append_var LDFLAGS "-Wl,--gc-sections"
		else
			append_var LDFLAGS "-Wl,--no-gc-sections"
			# TODO automate this required 2 step linking phase
			# append_var LDFLAGS "-Wl,--retain-symbols-file,ds.syms"
		fi
		append_var LDFLAGS "-L$DEVKITPRO/libnds/lib"
		append_var LIBS "-lnds9"
		;;
	freebsd*)
		append_var LDFLAGS "-L/usr/local/lib"
		append_var CXXFLAGS "-I/usr/local/include"
		;;
	gamecube)
		_optimization_level=-Os
		append_var CXXFLAGS "-mogc"
		append_var CXXFLAGS "-mcpu=750"
		append_var CXXFLAGS "-meabi"
		append_var CXXFLAGS "-mhard-float"
		append_var CXXFLAGS "-ffunction-sections"
		append_var CXXFLAGS "-fdata-sections"
		append_var CXXFLAGS "-fmodulo-sched"
		append_var CXXFLAGS "-fuse-cxa-atexit"
		append_var CXXFLAGS "-I$DEVKITPRO/libogc/include"
		# libogc is required to link the cc tests (includes _start())
		append_var LDFLAGS "-mogc"
		append_var LDFLAGS "-mcpu=750"
		append_var LDFLAGS "-L$DEVKITPRO/libogc/lib/cube"
		append_var LDFLAGS "-logc"
		if test "$_dynamic_modules" = "yes" ; then
			# retarded toolchain patch forces --gc-sections, overwrite it
			append_var LDFLAGS "-Wl,--no-gc-sections"
		fi
		;;
	haiku*)
		append_var DEFINES "-DSYSTEM_NOT_SUPPORTING_D_TYPE"
		# Needs -lnetwork for the timidity MIDI driver
		append_var LIBS "-lnetwork"
		_seq_midi=no
		;;
	irix*)
		append_var DEFINES "-DIRIX"
		append_var DEFINES "-DSYSTEM_NOT_SUPPORTING_D_TYPE"
		append_var LIBS "-lmd -lfastm -lm"
		_ranlib=:
		;;
	linux* | uclinux*)
		# When not cross-compiling, enable large file support, but don't
		# care if getconf doesn't exist or doesn't recognize LFS_CFLAGS.
		if test -z "$_host"; then
			append_var CXXFLAGS "`getconf LFS_CFLAGS 2>/dev/null`"
		fi
		;;
	maemo)
		append_var DEFINES "-DMAEMO"
		;;
	mingw*)
		append_var DEFINES "-DWIN32"
		append_var DEFINES "-D__USE_MINGW_ANSI_STDIO=0"
		append_var LDFLAGS "-static-libgcc -static-libstdc++"
		append_var LIBS "-lmingw32 -lwinmm -lgdi32"
		append_var OBJS "scummvmwinres.o"
		add_line_to_config_mk 'WIN32 = 1'
		;;
	mint*)
		append_var DEFINES "-DSYSTEM_NOT_SUPPORTING_D_TYPE"
		;;
	msys)
		echo ERROR: Using the MSYS shell in msys mode is not supported. Please use the MSYS shell in mingw mode instead.
		exit 1
		;;
	n64)
		append_var DEFINES "-D__N64__"
		append_var DEFINES "-DLIMIT_FPS"
		append_var DEFINES "-DNONSTANDARD_PORT"
		append_var DEFINES "-DDISABLE_COMMAND_LINE"
		append_var DEFINES "-DDISABLE_DEFAULT_SAVEFILEMANAGER"
		append_var DEFINES "-DDISABLE_DOSBOX_OPL"
		append_var DEFINES "-DDISABLE_FANCY_THEMES"
		append_var DEFINES "-DDISABLE_NES_APU"
		append_var DEFINES "-DDISABLE_SID"
		append_var DEFINES "-DREDUCE_MEMORY_USAGE"
		;;
	ps2)
		append_var CXXFLAGS "-G2"
		append_var DEFINES "-D_EE"
		append_var DEFINES "-D__PLAYSTATION2__"
		if test -z "$PS2SDK_OLD"; then
			append_var DEFINES "-D__NEW_PS2SDK__"
		fi
		;;
	ps3)
		# Force use of SDL and freetype from the ps3 toolchain
		_sdlconfig=sdl2-config
		_sdlpath="$PS3DEV/portlibs/ppu:$PS3DEV/portlibs/ppu/bin"
		_freetypepath="$PS3DEV/portlibs/ppu:$PS3DEV/portlibs/ppu/bin"

		append_var DEFINES "-DPLAYSTATION3"
		append_var CXXFLAGS "-mcpu=cell -mminimal-toc -I$PSL1GHT/ppu/include -I$PS3DEV/portlibs/ppu/include"
		append_var LDFLAGS "-L$PSL1GHT/ppu/lib -L$PS3DEV/portlibs/ppu/lib"
		add_line_to_config_mk 'PLAYSTATION3 = 1'
		add_line_to_config_h "#define PREFIX \"${prefix}\""
		;;
	psp)
		if test -d "$PSPDEV/psp/lib"; then
			append_var LDFLAGS "-L$PSPDEV/psp/lib"
		fi
		append_var LDFLAGS "-L$PSPSDK/lib"
		append_var LDFLAGS "-specs=$_srcdir/backends/platform/psp/psp.spec"
		_optimization_level=-O3
		append_var CXXFLAGS "-I$PSPSDK/include"
		# FIXME: Why is the following in CXXFLAGS and not in DEFINES? Change or document this.
		append_var CXXFLAGS "-D_PSP_FW_VERSION=150"
		;;
	solaris*)
		append_var DEFINES "-DSOLARIS"
		append_var DEFINES "-DSYSTEM_NOT_SUPPORTING_D_TYPE"
		# Needs -lbind -lsocket for the timidity MIDI driver
		append_var LIBS "-lnsl -lsocket"
		;;
	tizen)
		add_line_to_config_mk "TIZEN_ROOTSTRAP = $TIZEN_ROOTSTRAP"
		append_var LDFLAGS "--sysroot=${TIZEN_ROOTSTRAP}"
		append_var LDFLAGS "-L${TIZEN_LIBS}/lib"
		append_var CXXFLAGS "-I${TIZEN_LIBS}/include"
		;;
	webos)
		append_var CXXFLAGS "--sysroot=$WEBOS_PDK/arm-gcc/sysroot"
		append_var CXXFLAGS "-I$WEBOS_PDK/include"
		append_var CXXFLAGS "-I$WEBOS_PDK/include/SDL"
		append_var CXXFLAGS "-I$WEBOS_PDK/device/usr/include"
		# These compiler options are needed to support the Palm Pixi
		append_var CXXFLAGS "-mcpu=arm1136jf-s"
		append_var CXXFLAGS "-mfpu=vfp "
		append_var CXXFLAGS "-mfloat-abi=softfp"
		append_var LDFLAGS "-L$WEBOS_PDK/device/lib"
		append_var LDFLAGS "-L$WEBOS_PDK/device/usr/lib"
		append_var LDFLAGS "-Wl,--allow-shlib-undefined"
		append_var LDFLAGS "--sysroot=$WEBOS_PDK/arm-gcc/sysroot"
		add_line_to_config_mk "WEBOS_SDK = $WEBOS_SDK"
		_seq_midi=no
		;;
	wii)
		_optimization_level=-Os
		append_var CXXFLAGS "-mrvl"
		append_var CXXFLAGS "-mcpu=750"
		append_var CXXFLAGS "-meabi"
		append_var CXXFLAGS "-mhard-float"
		append_var CXXFLAGS "-ffunction-sections"
		append_var CXXFLAGS "-fdata-sections"
		append_var CXXFLAGS "-fmodulo-sched"
		append_var CXXFLAGS "-fuse-cxa-atexit"
		append_var CXXFLAGS "-I$DEVKITPRO/libogc/include"
		# libogc is required to link the cc tests (includes _start())
		append_var LDFLAGS "-mrvl"
		append_var LDFLAGS "-mcpu=750"
		append_var LDFLAGS "-L$DEVKITPRO/libogc/lib/wii"
		append_var LDFLAGS "-logc"
		if test "$_dynamic_modules" = "yes" ; then
			# retarded toolchain patch forces --gc-sections, overwrite it
			append_var LDFLAGS "-Wl,--no-gc-sections"
		fi
		;;
	wince)
		_optimization_level=-O3
		append_var CXXFLAGS "-fno-inline-functions"
		append_var CXXFLAGS "-march=armv4"
		append_var CXXFLAGS "-mtune=xscale"
		append_var DEFINES "-D_WIN32_WCE=300"
		append_var DEFINES "-D__ARM__"
		append_var DEFINES "-D_ARM_"
		append_var DEFINES "-DUNICODE"
		append_var DEFINES "-DFPM_DEFAULT"
		append_var DEFINES "-DNONSTANDARD_PORT"
		append_var DEFINES "-DWRAP_MALLOC"
		append_var DEFINES "-DWIN32"
		append_var DEFINES "-Dcdecl="
		append_var DEFINES "-D__cdecl__="
		add_line_to_config_mk "WRAP_MALLOC = 1"
		;;
esac

if test -n "$_host"; then
	# Cross-compiling mode - add your target here if needed
	echo "Cross-compiling to $_host"
	case "$_host" in
		3ds)
			append_var DEFINES "-DDISABLE_FANCY_THEMES"
			append_var DEFINES "-DDISABLE_SID"
			append_var DEFINES "-DDISABLE_NES_APU"
			_backend="3ds"
			_build_scalers=no
			_vkeybd=yes
			_mt32emu=no
			# Should use Tremor instead of Vorbis
			_vorbis=no
			_port_mk="backends/platform/3ds/3ds.mk"
			;;
		android | android-arm | android-v7a | android-arm-v7a | android-mips | android-x86 | ouya)
			# we link a .so as default
			append_var LDFLAGS "-shared"
			append_var LDFLAGS "-Wl,-Bsymbolic,--no-undefined"
			HOSTEXEPRE=lib
			HOSTEXEEXT=.so
			_backend="android"
			_port_mk="backends/platform/android/android.mk"
			_build_scalers=no
			_seq_midi=no
			_mt32emu=no
			_timidity=no
			;;
		arm-linux|arm*-linux-gnueabi|arm-*-linux)
			;;
		arm-riscos|linupy)
			append_var DEFINES "-DLINUPY"
			;;
		bfin*)
			;;
		caanoo)
			append_var DEFINES "-DCAANOO"
			if test "$_debug_build" = no; then
				# Use -O3 on the Caanoo for non-debug builds.
				_optimization_level=-O3
			fi
			append_var CXXFLAGS "-mcpu=arm926ej-s"
			append_var CXXFLAGS "-mtune=arm926ej-s"
			_backend="gph"
			_build_hq_scalers=no
			_savegame_timestamp=no
			_vkeybd=yes
			_seq_midi=no
			_mt32emu=no
			_timidity=no
			_port_mk="backends/platform/gph/caanoo-bundle.mk"
			;;
		*darwin*)
			_ranlib=$_host-ranlib
			_strip=$_host-strip
			;;
		dingux)
			append_var DEFINES "-DDINGUX"
			append_var DEFINES "-DDISABLE_DOSBOX_OPL"
			append_var DEFINES "-DREDUCE_MEMORY_USAGE"
			append_var CXXFLAGS "-msoft-float"
			append_var CXXFLAGS "-mips32"
			_backend="dingux"
			_mt32emu=no
			_optimization_level=-O3
			# Disable alsa midi to get the port build on OpenDingux toolchain
			_alsa=no
			_vkeybd=yes
			_build_hq_scalers=no
			_keymapper=no
			# Force disable vorbis on dingux, it has terrible performance compared to tremor
			_vorbis=no
			# Force disable seq on dingux, no way to use it and it would get enabled by default with configure
			_seq_midi=no
			_port_mk="backends/platform/dingux/dingux.mk"
			;;
		raspberrypi)
			# This is needed because the official cross compiler doesn't have multiarch enabled
			# but Raspbian does.
			# Be careful as it's the linker (LDFLAGS) which must know about sysroot.
			# These are needed to build against Raspbian's libSDL.
			append_var LDFLAGS "--sysroot=$RPI_ROOT"
			append_var LDFLAGS "-B$RPI_ROOT/usr/lib/arm-linux-gnueabihf"
			append_var LDFLAGS "-Xlinker --rpath-link=$RPI_ROOT/usr/lib/arm-linux-gnueabihf"
			append_var LDFLAGS "-Xlinker --rpath-link=$RPI_ROOT/lib/arm-linux-gnueabihf"
			append_var LDFLAGS "-Xlinker --rpath-link=$RPI_ROOT/opt/vc/lib"
			append_var LDFLAGS "-L$RPI_ROOT/opt/vc/lib"
			# This is so optional OpenGL ES includes are found.
			append_var CXXFLAGS "-I$RPI_ROOT/opt/vc/include"
			_savegame_timestamp=no
			_eventrec=no
			_build_scalers=no
			_build_hq_scalers=no
			# We prefer SDL2 on the Raspberry Pi: acceleration now depends on it
			# since SDL2 manages dispmanx/GLES2 very well internally.
			# SDL1 is bit-rotten on this platform.
			_sdlconfig=sdl2-config
			# OpenGL ES support is mature enough as to be the best option on
			# the Raspberry Pi, so it's enabled by default.
			# The Raspberry Pi always supports OpenGL ES 2.0 contexts, thus we
			# take advantage of those.
			_opengl_mode=gles2
			;;
		dreamcast)
			append_var DEFINES "-DDISABLE_DEFAULT_SAVEFILEMANAGER"
			append_var DEFINES "-DDISABLE_TEXT_CONSOLE"
			append_var DEFINES "-DDISABLE_COMMAND_LINE"
			# Enable serial debugging output only when --enable-debug is passed
			if test "$_release_build" = yes -o "$_debug_build" != yes; then
				append_var DEFINES "-DNOSERIAL"
			fi
			_optimization_level=-O3
			append_var CXXFLAGS "-funroll-loops"
			append_var CXXFLAGS "-fschedule-insns2"
			append_var CXXFLAGS "-fomit-frame-pointer"
			append_var CXXFLAGS "-fdelete-null-pointer-checks"
			# no-delayed-branch is a workaround for GCC bug #42841 - "SH: Assembler complains pcrel too far."
			append_var CXXFLAGS "-fno-delayed-branch"
			_backend="dc"
			_build_scalers=no
			_mad=yes
			_zlib=yes
			if test -z "$RONINDIR"; then
				add_line_to_config_mk "ronindir := /usr/local/ronin"
			else
				add_line_to_config_mk "ronindir := $RONINDIR"
			fi
			_port_mk="backends/platform/dc/dreamcast.mk"
			;;
		ds)
			append_var DEFINES "-DDISABLE_COMMAND_LINE"
			append_var DEFINES "-DDISABLE_DEFAULT_SAVEFILEMANAGER"
			append_var DEFINES "-DDISABLE_DOSBOX_OPL"
			append_var DEFINES "-DDISABLE_FANCY_THEMES"
			append_var DEFINES "-DDISABLE_SID"
			append_var DEFINES "-DDISABLE_NES_APU"
			append_var DEFINES "-DDISABLE_TEXT_CONSOLE"
			append_var DEFINES "-DREDUCE_MEMORY_USAGE"
			append_var DEFINES "-DSTREAM_AUDIO_FROM_DISK"
			append_var DEFINES "-DVECTOR_RENDERER_FORMAT=1555"
			_backend="ds"
			_build_scalers=no
			_mt32emu=no
			_port_mk="backends/platform/ds/ds.mk"
			;;
		gamecube)
			_backend="wii"
			_build_scalers=no
			_vkeybd=yes
			_mt32emu=no
			_port_mk="backends/platform/wii/wii.mk"
			add_line_to_config_mk 'GAMECUBE = 1'
			add_line_to_config_h '#define AUDIO_REVERSE_STEREO'
			add_line_to_config_h '#define GAMECUBE'
			add_line_to_config_h "/* #define DEBUG_WII_USBGECKO */"
			add_line_to_config_h "/* #define DEBUG_WII_MEMSTATS */"
			add_line_to_config_h "/* #define DEBUG_WII_GDB */"
			add_line_to_config_h "#define USE_WII_DI"
			;;
		gcw0)
			_sysroot=`$CXX --print-sysroot`
			_sdlpath=$_sysroot/usr/bin
			append_var DEFINES "-DDINGUX -DGCW0 -DGUI_ONLY_FULLSCREEN"
			append_var DEFINES "-DREDUCE_MEMORY_USAGE"
			append_var CXXFLAGS "-mips32"
			_backend="dingux"
			_alsa=no
			_mt32emu=no
			_seq_midi=no
			_timidity=no
			_build_scalers=no
			_optimization_level=-O3
			_vkeybd=yes
			_keymapper=yes
			_vorbis=no
			_port_mk="backends/platform/dingux/dingux.mk"
			;;
		gp2x)
			append_var DEFINES "-DGP2X"
			append_var CXXFLAGS "-march=armv4t"
			append_var ASFLAGS "-mfloat-abi=soft"
			append_var LDFLAGS "-static"
			_backend="gph"
			_build_hq_scalers=no
			_savegame_timestamp=no
			_vkeybd=yes
			_seq_midi=no
			_mt32emu=no
			_timidity=no
			_port_mk="backends/platform/gph/gp2x-bundle.mk"
			;;
		gp2xwiz)
			append_var DEFINES "-DGP2XWIZ"
			append_var CXXFLAGS "-mcpu=arm926ej-s"
			append_var CXXFLAGS "-mtune=arm926ej-s"
			append_var ASFLAGS "-mfloat-abi=soft"
			_backend="gph"
			_build_hq_scalers=no
			_savegame_timestamp=no
			_vkeybd=yes
			_seq_midi=no
			_mt32emu=no
			_timidity=no
			_port_mk="backends/platform/gph/gp2xwiz-bundle.mk"
			;;
		iphone)
			append_var DEFINES "-DIPHONE"
			append_var ASFLAGS "-arch armv6"
			_backend="iphone"
			_build_scalers=no
			_mt32emu=no
			_seq_midi=no
			_timidity=no
			;;
		ios7)
			append_var DEFINES "-DIPHONE"
			_backend="ios7"
			_build_scalers=no
			_seq_midi=no
			_timidity=no
			;;
		m68k-atari-mint)
			append_var DEFINES "-DSYSTEM_NOT_SUPPORTING_D_TYPE"
			_ranlib=m68k-atari-mint-ranlib
			_ar="m68k-atari-mint-ar cru"
			_seq_midi=no
			;;
		maemo)
			_optimization_level=-Os
			append_var CXXFLAGS "-mcpu=arm926ej-s"
			append_var CXXFLAGS "-fomit-frame-pointer"
			append_var INCLUDES "-I/usr/X11R6/include"
			append_var LIBS "-lX11"
			append_var LIBS "-L/usr/lib"

			_backend="maemo"
			_vkeybd=yes
			_keymapper=yes
			_build_hq_scalers=no
			_mt32emu=no
			_alsa=no
			_mad=yes
			_tremor=yes
			_zlib=yes
			;;
		*mingw32*)
			_sdlconfig=$_host-sdl-config
			_windres=$_host-windres
			_ar="$_host-ar cru"
			_ranlib=$_host-ranlib
			;;
		mips-sgi*)
			append_var LDFLAGS "-static-libgcc"
			append_var LIBS "-laudio"
			;;
		motoezx)
			append_var DEFINES "-DMOTOEZX"
			append_var ASFLAGS "-mfpu=vfp"
			_backend="linuxmoto"
			_build_hq_scalers=no
			_mt32emu=no
			_vkeybd=yes
			_seq_midi=no
			_port_mk="backends/platform/linuxmoto/linuxmoto.mk"
			;;
		motomagx)
			append_var DEFINES "-DMOTOMAGX"
			append_var ASFLAGS "-mfpu=vfp"
			_backend="linuxmoto"
			_build_hq_scalers=no
			_mt32emu=no
			_vkeybd=yes
			_seq_midi=no
			_port_mk="backends/platform/linuxmoto/linuxmoto.mk"
			;;
		n64)
			append_var CXXFLAGS "-mno-extern-sdata"
			append_var CXXFLAGS "--param max-inline-insns-auto=20"
			append_var CXXFLAGS "-fomit-frame-pointer"
			append_var CXXFLAGS "-march=vr4300"
			append_var CXXFLAGS "-mtune=vr4300"
			append_var CXXFLAGS "-mhard-float"
			append_var LDFLAGS "-march=vr4300"
			append_var LDFLAGS "-mtune=vr4300"
			append_var LDFLAGS "-nodefaultlibs"
			append_var LDFLAGS "-nostartfiles"
			append_var LDFLAGS "-mno-crt0"
			append_var LDFLAGS "-L$N64SDK/hkz-libn64"
			append_var LDFLAGS "-L$N64SDK/lib"
			append_var LDFLAGS "-T n64ld_cpp.x -Xlinker -Map -Xlinker scummvm.map"
			_backend="n64"
			_mt32emu=no
			_build_scalers=no
			_savegame_timestamp=no
			_translation=no
			_keymapper=no
			_text_console=no
			_vkeybd=yes
			_dynamic_modules=no
			_plugins_default=static
			# Force use of libmad, libtremor and zlib
			_mad=no
			_tremor=yes
			_zlib=yes
			_port_mk="backends/platform/n64/n64.mk"
			;;
		neuros)
			append_var DEFINES "-DNEUROS"
			_backend='null'
			_build_hq_scalers=no
			_mt32emu=no
			;;
		openpandora)
			append_var DEFINES "-DOPENPANDORA"
			append_var DEFINES "-DREDUCE_MEMORY_USAGE"
			if test "$_release_build" = no; then
				append_var DEFINES "-DOP_DEBUG"
			fi

			# Use -O3 on the OpenPandora for optimized builds.
			if test "$_optimizations" = yes; then
				_optimization_level=-O3
			fi

			define_in_config_if_yes yes 'USE_ARM_NEON_ASPECT_CORRECTOR'
			append_var CXXFLAGS "-march=armv7-a"
			append_var CXXFLAGS "-mtune=cortex-a8"
			append_var CXXFLAGS "-mfloat-abi=softfp"
			append_var CXXFLAGS "-mfpu=neon"
			append_var CXXFLAGS "-fsingle-precision-constant"
			append_var ASFLAGS "-mfloat-abi=softfp"
			_backend="openpandora"
			_build_hq_scalers=yes
			_vkeybd=no
			_mt32emu=no
			_seq_midi=no
			_port_mk="backends/platform/openpandora/op-bundle.mk"
			;;
		ppc-amigaos)
			# PPC Linker requires this to fix relocation errors
			append_var CXXFLAGS "-mlongcall"

			# Only static builds link successfully on buildbot
			LDFLAGS=`echo $LDFLAGS | sed 's/-use-dynld//'`
			append_var LDFLAGS "-static"

			# toolchain binaries prefixed by host
			_ranlib=$_host-ranlib
			_strip=$_host-strip
			_ar="$_host-ar cru"
			_as="$_host-as"
			_windres=$_host-windres

			_port_mk="backends/platform/sdl/amigaos/amigaos.mk"
			;;
		ps2)
			append_var DEFINES "-DDISABLE_TEXT_CONSOLE"
			append_var DEFINES "-DDISABLE_COMMAND_LINE"
			append_var DEFINES "-DDISABLE_DOSBOX_OPL"
			append_var DEFINES "-DDISABLE_SID"
			append_var DEFINES "-DDISABLE_NES_APU"
			append_var CXXFLAGS "-fno-exceptions"
			append_var CXXFLAGS "-fno-rtti"
			_backend="ps2"
			_build_scalers=no
			_mt32emu=no
			# HACK to enable mad & zlib (they are not properly detected due to linker issues).
			# This trick doesn't work for tremor right now, as the PS2 port the resulting library
			# libtremor, while our code later on expects it to be called libvorbisidec.
			# TODO: Enable tremor, e.g. by adding  -ltremor or by renaming the lib.
			# Disable this for older SDK as this breaks the build otherwise...
			if test -z "$PS2SDK_OLD"; then
				_tremor=yes
			fi
			_mad=yes
			_zlib=yes
			# HACK to fix compilation of C source files for now.
			add_line_to_config_mk 'CC := ee-gcc'
			add_line_to_config_mk 'CFLAGS := -std=c99 -W -Wno-unused-parameter -Wconversion -pedantic -G2 -s -O2 -Wuninitialized'
			# HACK to fix linking for now. It seems ee-g++ does not handle linking correctly.
			LD=ee-gcc

			if test "$_debug_build" = yes; then
				# TODO: Setup debug build properly
				append_var DEFINES "-D__PS2_DEBUG__"
				#append_var INCLUDES "-I$(PS2GDB)/ee"
				#append_var LDFLAGS "-L$(PS2GDB)/lib"
				append_var LDFLAGS "-lps2gdbStub"
				append_var LDFLAGS "-lps2ip"
				append_var LDFLAGS "-ldebug"
			else
				# If not building for debug mode, strip binaries.
				append_var CXXFLAGS "-s"
			fi
			;;
		ps3)
			_mt32emu=no
			_timidity=no
			_vkeybd=yes
			_eventrec=no
			_port_mk="backends/platform/sdl/ps3/ps3.mk"
			;;
		psp)
			_backend="psp"
			_build_scalers=no
			_mt32emu=no
			_port_mk="backends/platform/psp/psp.mk"
			;;
		samsungtv)
			append_var DEFINES "-DSAMSUNGTV"
			append_var DEFINES "-DDISABLE_COMMAND_LINE"
			append_var ASFLAGS "-mfpu=vfp"
			HOSTEXEEXT=".so"
			_backend="samsungtv"
			_mt32emu=no
			_vkeybd=yes
			;;
		tizen)
			_unix=yes
			_backend="tizen"
			_port_mk="backends/platform/tizen/tizen.mk"
			_arm_asm=yes
			_build_scalers=no
			_seq_midi=no
			_mt32emu=no
			_timidity=no
			_vkeybd=yes
			# Tizen relies on the OpenGL ES output thus we always enable it.
			_opengl_mode=gles
			;;
		webos)
			_backend="webos"
			_port_mk="backends/platform/webos/webos.mk"
			_build_scalers=yes
			_build_hq_scalers=no
			_timidity=no
			_mt32emu=no
			_seq_midi=no
			_vkeybd=no
			_keymapper=yes
			add_line_to_config_mk "HOST_COMPILER = `uname`"
			;;
		wii)
			_backend="wii"
			_build_scalers=no
			_vkeybd=yes
			_port_mk="backends/platform/wii/wii.mk"
			add_line_to_config_mk 'GAMECUBE = 0'
			add_line_to_config_h '#define AUDIO_REVERSE_STEREO'
			add_line_to_config_h "#define DEBUG_WII_USBGECKO"
			add_line_to_config_h "/* #define DEBUG_WII_MEMSTATS */"
			add_line_to_config_h "/* #define DEBUG_WII_GDB */"
			add_line_to_config_h "#define USE_WII_DI"
			add_line_to_config_h "#define USE_WII_SMB"
			add_line_to_config_h "#define USE_WII_KBD"
			;;
		wince)
			append_var LDFLAGS "-Wl,--stack,65536"
			_tremolo=yes
			_backend="wince"
			_detectlang=yes
			_mt32emu=no
			_port_mk="backends/platform/wince/wince.mk"
			;;
		*)
			echo "WARNING: Unknown target, continuing with auto-detected values"
			;;
	esac
fi

#
# Backend related stuff
#
case $_backend in
	3ds)
		;;
	android)
		append_var DEFINES "-DREDUCE_MEMORY_USAGE"
		append_var CXXFLAGS "-Wa,--noexecstack"
		append_var LDFLAGS "-Wl,-z,noexecstack"
		append_var INCLUDES "-I$ANDROID_NDK/sources/cxx-stl/system/include"
		;;
	dc)
		append_var INCLUDES '-I$(srcdir)/backends/platform/dc'
		append_var INCLUDES '-isystem $(ronindir)/include'
		append_var LDFLAGS "-Wl,-Ttext,0x8c010000"
		append_var LDFLAGS "-nostartfiles"
		append_var LDFLAGS '$(ronindir)/lib/crt0.o'
		append_var LDFLAGS '-L$(ronindir)/lib'
		# Enable serial debugging output only when --enable-debug is passed
		if test "$_release_build" = yes -o "$_debug_build" != yes; then
			append_var LIBS "-lronin-noserial -lm"
		else
			append_var LIBS "-lronin -lm"
		fi
		;;
	dingux)
		append_var DEFINES "-DDINGUX"
		;;
	ds)
		append_var INCLUDES '-I$(srcdir)/backends/platform/ds/arm9/source'
		append_var INCLUDES '-I$(srcdir)/backends/platform/ds/commoninclude'
		append_var INCLUDES '-Ibackends/platform/ds/arm9/data'
		;;
	gph)
		# On the GPH devices we want fancy themes but do not want the load/save thumbnail grid.
		append_var DEFINES "-DDISABLE_SAVELOADCHOOSER_GRID"
		append_var DEFINES "-DGPH_DEVICE"
		append_var DEFINES "-DREDUCE_MEMORY_USAGE"
		if test "$_debug_build" = yes; then
			append_var DEFINES "-DGPH_DEBUG"
		fi
		;;
	iphone)
		append_var LIBS "-lobjc -framework UIKit -framework CoreGraphics -framework OpenGLES"
		append_var LIBS "-framework QuartzCore -framework CoreFoundation -framework Foundation"
		append_var LIBS "-framework AudioToolbox -framework CoreAudio"
		;;
	ios7)
		append_var LIBS "-lobjc -framework UIKit -framework CoreGraphics -framework OpenGLES"
		append_var LIBS "-framework QuartzCore -framework CoreFoundation -framework Foundation"
		append_var LIBS "-framework AudioToolbox -framework CoreAudio"
		append_var LDFLAGS "-miphoneos-version-min=7.1 -arch armv7"
		append_var CFLAGS "-miphoneos-version-min=7.1 -arch armv7"
		append_var CXXFLAGS "-miphoneos-version-min=7.1 -arch armv7"
		if test -n "$SDKROOT"; then
			append_var LDFLAGS "-mlinker-version=134.9 -B/usr/local/bin/arm-apple-darwin11-"
			append_var CFLAGS "-isysroot $SDKROOT -F$SDKROOT/System/Library/Frameworks"
			append_var CXXFLAGS "-isysroot $SDKROOT -I$SDKROOT/usr/include/c++/4.2.1 -F$SDKROOT/System/Library/Frameworks"
		fi
		;;
	linuxmoto)
		append_var DEFINES "-DLINUXMOTO"
		;;
	maemo)
		append_var DEFINES "-DMAEMO"
		;;
	n64)
		append_var INCLUDES '-I$(N64SDK)/include'
		append_var INCLUDES '-I$(N64SDK)/mips64/include'
		append_var INCLUDES '-I$(N64SDK)/hkz-libn64'
		append_var INCLUDES '-I$(srcdir)/backends/platform/n64'
		append_var LIBS "-lpakfs -lframfs -ln64 -ln64utils -lromfs"
		append_var LIBS "-lm -lstdc++ -lz"
		;;
	null)
		append_var DEFINES "-DUSE_NULL_DRIVER"
		;;
	openpandora)
		;;
	ps2)
		append_var DEFINES "-D_EE"
		append_var DEFINES "-DFORCE_RTL"
		append_var INCLUDES "-I$PS2SDK/ee/include"
		append_var INCLUDES "-I$PS2SDK/common/include"
		append_var INCLUDES "-I$PS2SDK/ports/include"
		if test "$_dynamic_modules" = no ; then
			append_var LDFLAGS "-mno-crt0"
			append_var LDFLAGS "$PS2SDK/ee/startup/crt0.o"
			append_var LDFLAGS "-T $PS2SDK/ee/startup/linkfile"
		fi
		append_var LDFLAGS "-L$PS2SDK/ee/lib"
		append_var LDFLAGS "-L$PS2SDK/ports/lib"
		append_var LIBS "-lmc -lpad -lmouse -lhdd -lpoweroff -lsjpcm"
		append_var LIBS "-lm -lc -lfileXio -lkernel -lstdc++"
		;;
	psp)
		append_var DEFINES "-D__PSP__"
		append_var DEFINES "-DDISABLE_COMMAND_LINE"
		append_var DEFINES "-DDISABLE_DOSBOX_OPL"
		append_var LIBS "-lpng"
		append_var LIBS "-Wl,-Map,mapfile.txt"
		;;
	samsungtv)
		append_var DEFINES "-DSAMSUNGTV"
		append_var LDFLAGS "-shared"
		append_var LDFLAGS "-fpic"
		;;
	sdl)
		;;
	tizen)
		# dirent.h not available. NONSTANDARD_PORT==ensure portdefs.h is included
		append_var DEFINES "-DTIZEN -DDISABLE_STDIO_FILESTREAM -DNONSTANDARD_PORT"
		append_var DEFINES "-DNO_STDERR_STDOUT"
		append_var DEFINES "-DDISABLE_COMMAND_LINE"
		append_var INCLUDES '-I$(srcdir)/backends/platform/tizen'
		append_var INCLUDES '-I$(TIZEN_ROOTSTRAP)/usr/include'
		append_var INCLUDES '-I$(TIZEN_ROOTSTRAP)/usr/include/osp'
		if test "$_debug_build" = yes; then
			append_var CXXFLAGS "-D_DEBUG -DBUILD_DLL -O0 -g3"
		fi
		# created a shared library for inclusion via the eclipse build
		append_var CXXFLAGS "-Wno-psabi"
		append_var CXXFLAGS "--sysroot=${TIZEN_ROOTSTRAP}"
		append_var CXXFLAGS "-fmessage-length=0"
		append_var CXXFLAGS "-fPIC"
		HOSTEXEPRE=lib
		HOSTEXEEXT=.a
		;;
	webos)
		# There is no sdl-config in the WebOS PDK so we don't use find_sdlconfig here.
		# The PDL library acts as the WebOS device toolchain, and is required to control the virtual keyboard among other OS-level events.
		append_var LIBS "-lSDL -lpdl"
		append_var DEFINES "-DWEBOS"
		append_var DEFINES "-DSDL_BACKEND"
		add_line_to_config_mk "SDL_BACKEND = 1"
		append_var MODULES "backends/platform/sdl"
		;;
	wii)
		append_var DEFINES "-D__WII__"
		append_var DEFINES "-DGEKKO"
		case $_host_os in
		gamecube)
			append_var LIBS "-lgxflux -liso9660 -lfat -logc -ldb"
			;;
		*)
			append_var LIBS "-lgxflux -ldi -liso9660 -ltinysmb -lfat -lwiiuse -lbte -logc -lwiikeyboard -ldb"
			;;
		esac
		;;
	wince)
		append_var INCLUDES '-I$(srcdir)/backends/platform/wince'
		append_var INCLUDES '-I$(srcdir)/backends/platform/wince/CEgui'
		append_var INCLUDES '-I$(srcdir)/backends/platform/wince/CEkeys'
		append_var LIBS "-static -lSDL"
		append_var DEFINES "-DSDL_BACKEND"
		add_line_to_config_mk "SDL_BACKEND = 1"
		;;
	*)
		echo "support for $_backend backend not implemented in configure script yet"
		exit 1
		;;
esac
append_var MODULES "backends/platform/$_backend"

#
# Setup SDL specifics for SDL based backends
#
case $_backend in
	dingux | gph | linuxmoto | maemo | openpandora | samsungtv | sdl)
		find_sdlconfig
		append_var INCLUDES "`$_sdlconfig --prefix="$_sdlpath" --cflags`"
		append_var LIBS "`$_sdlconfig --prefix="$_sdlpath" --libs`"
		append_var DEFINES "-DSDL_BACKEND"
		add_line_to_config_mk "SDL_BACKEND = 1"

		_sdlversion=`$_sdlconfig --version`
		case $_sdlversion in
			2.0.*)
				add_line_to_config_mk "USE_SDL2 = 1"
				;;
			*)
				;;
		esac
		;;
esac


#
# Enable 16bit support only for backends which support it
#
case $_backend in
	3ds | android | dingux | dc | gph | iphone | ios7 | maemo | openpandora | psp | samsungtv | sdl | tizen | webos | wii)
		if test "$_16bit" = auto ; then
			_16bit=yes
		else
			_16bit=no
		fi
		;;
	*)
		_16bit=no
		;;
esac

#
# Enable High resolution engines (>320x240) support only for backends which support it
#
case $_host in
	gcw0)
		if test "$_highres" = yes ; then
			_highres=yes
		else
			_highres=no
		fi
		;;
	*)
		if test "$_highres" = no ; then
			_highres=no
		else
			_highres=yes
		fi
		;;
esac

#
# Enable Event Recorder only for backends that support it
#
case $_backend in
	sdl)
		if test "$_eventrec" = auto ; then
			_eventrec=yes
		fi
		;;
	*)
		_eventrec=no
		;;
esac

#
# Disable savegame timestamp support for backends which don't have a reliable real time clock
#
case $_backend in
	gph | n64)
		if test "$_savegame_timestamp" = auto ; then
			_savegame_timestamp=no
		else
			_savegame_timestamp=yes
		fi
		;;
	*)
		if test "$_savegame_timestamp" = auto ; then
			_savegame_timestamp=yes
		else
			_savegame_timestamp=no
		fi
		;;
esac

#
# Determine whether host is POSIX compliant, or at least POSIX
# compatible enough to support our POSIX code (including dlsym(),
# mkdir() and some other APIs).
#
# TODO: Instead of basing this on the host name, we should really base
# this on the presence of features (such as the dlsym and mkdir APIs).
#
echo_n "Checking if host is POSIX compliant... "
case $_host_os in
	amigaos* | cygwin* | dreamcast | ds | gamecube | mingw* | n64 | ps2 | ps3 | psp | wii | wince)
		_posix=no
		;;
	3ds | android | beos* | bsd* | darwin* | freebsd* | gnu* | gph-linux | haiku* | hpux* | iphone | ios7 | irix*| k*bsd*-gnu* | linux* | maemo | mint* | netbsd* | openbsd* | solaris* | sunos* | uclinux* | webos)
		_posix=yes
		;;
	os2-emx*)
		_posix=yes	# FIXME: Really???
		;;
	*)
		# given this is a shell script, we might assume some type of posix.
		# However, the host system might be a totally different one, so
		# we can assume nothing about it.
		# Indeed, as mentioned further above, we really should test for the
		# presences of relevant APIs on the host anyway...
		_posix=no
		;;
esac
echo $_posix

if test "$_posix" = yes ; then
	append_var DEFINES "-DPOSIX"
	add_line_to_config_mk 'POSIX = 1'
fi

#
# Check whether to enable a verbose build
#
echo_n "Checking whether to have a verbose build... "
echo "$_verbose_build"
add_to_config_mk_if_yes "$_verbose_build" 'VERBOSE_BUILD = 1'


#
# If a specific optimization level was requested, enable optimizations
#
if test -n "$_optimization_level" ; then
	# Ports will specify an optimization level and expect that to be enabled
	if test "$_optimizations" != no ; then
		_optimizations=yes
	fi
else
	_optimization_level=$_default_optimization_level
fi

#
# Check whether to enable optimizations
#
if test "$_optimizations" = yes ; then
	# Enable optimizations. This also
	# makes it possible to use -Wuninitialized, so let's do that.
	append_var CXXFLAGS "$_optimization_level"
	append_var CXXFLAGS "-Wuninitialized"
fi

#
# Check whether plugin support is requested and possible
#
echo_n "Checking whether building plugins was requested... "
echo "$_dynamic_modules"
_mak_plugins=

if test "$_dynamic_modules" = yes ; then
	echo_n "Checking whether building plugins is supported... "
	case $_host_os in
	android)
		_plugin_prefix="lib"
		_plugin_suffix=".so"
		append_var CXXFLAGS "-fpic"
		append_var LIBS "-ldl"
# Work around an Android 2.0+ run-time linker bug:
# The linker doesn't actually look in previously
# loaded libraries when trying to resolve symbols -
# effectively turning all dlopen(RTLD_GLOBAL) calls
# into dlopen(RTLD_LOCAL).  It *does* look in
# DT_NEEDED libraries, so the workaround is to add an
# (otherwise unnecessary) dependency from plugins back
# to the main libscummvm.so.
_mak_plugins='
PLUGIN_EXTRA_DEPS = libscummvm.so
PLUGIN_LDFLAGS  += $(LDFLAGS) -L. -lscummvm
PRE_OBJS_FLAGS  := -Wl,-export-dynamic -Wl,-whole-archive
POST_OBJS_FLAGS := -Wl,-no-whole-archive
'
		;;
	darwin*)
		_plugin_prefix=""
		_plugin_suffix=".plugin"
		append_var LIBS "-ldl"
_mak_plugins='
PLUGIN_EXTRA_DEPS = $(EXECUTABLE)
PLUGIN_LDFLAGS  += -bundle -bundle_loader $(EXECUTABLE) -exported_symbols_list "$(srcdir)/plugin.exp"
PRE_OBJS_FLAGS  := -all_load
POST_OBJS_FLAGS :=
'
		;;
	dreamcast)
		_plugin_prefix=""
		_plugin_suffix=".plg"
_mak_plugins='
PLUGIN_EXTRA_DEPS	= $(abspath $(srcdir)/backends/platform/dc/plugin.x $(srcdir)/backends/platform/dc/plugin.syms) $(EXECUTABLE) backends/platform/dc/plugin_head.o
PLUGIN_LDFLAGS		= -ml -m4-single-only -nostartfiles -Wl,-q,-T$(srcdir)/backends/platform/dc/plugin.x,--just-symbols,$(EXECUTABLE),--retain-symbols-file,$(srcdir)/backends/platform/dc/plugin.syms backends/platform/dc/plugin_head.o
PRE_OBJS_FLAGS		:= -Wl,--whole-archive
POST_OBJS_FLAGS		:= -Wl,--no-whole-archive
'
		;;
	ds)
		_elf_loader=yes
		append_var DEFINES "-DELF_LOADER_CXA_ATEXIT"
		append_var DEFINES "-DUNCACHED_PLUGINS"
		append_var DEFINES "-DELF_NO_MEM_MANAGER"
_mak_plugins='
PLUGIN_LDFLAGS		+= -Wl,-T$(srcdir)/backends/plugins/ds/plugin.ld -mthumb-interwork -mno-fpu
'
		;;
	freebsd*)
		_plugin_prefix="lib"
		_plugin_suffix=".so"
		append_var CXXFLAGS "-fPIC"
_mak_plugins='
PLUGIN_EXTRA_DEPS =
PLUGIN_LDFLAGS  += -shared
PRE_OBJS_FLAGS  := -Wl,-export-dynamic -Wl,-whole-archive
POST_OBJS_FLAGS := -Wl,-no-whole-archive
'
		;;
	gamecube | wii)
		_elf_loader=yes
		append_var DEFINES "-DELF_LOADER_CXA_ATEXIT"
		append_var DEFINES "-DUNCACHED_PLUGINS"
_mak_plugins='
PLUGIN_LDFLAGS		+= -Wl,-T$(srcdir)/backends/plugins/wii/plugin.ld
'
		;;
	gph*)
		_plugin_prefix=""
		_plugin_suffix=".plugin"
		append_var CXXFLAGS "-fpic"
		append_var LIBS "-ldl"
_mak_plugins='
PLUGIN_EXTRA_DEPS = $(EXECUTABLE)
PLUGIN_LDFLAGS  += -shared
PRE_OBJS_FLAGS  := -Wl,-export-dynamic -Wl,-whole-archive
POST_OBJS_FLAGS := -Wl,-no-whole-archive
'
		;;
	irix*)
		_plugin_prefix="lib"
		_plugin_suffix=".so"
		append_var CXXFLAGS "-fpic"
		append_var LIBS "-ldl"
_mak_plugins='
PLUGIN_EXTRA_DEPS =
PLUGIN_LDFLAGS  += -shared -static-libgcc
PRE_OBJS_FLAGS  := -Wl,-export-dynamic -Wl,-whole-archive
POST_OBJS_FLAGS := -Wl,-no-whole-archive
'
		;;

	linux* | gnu* | k*bsd*-gnu*)
		_plugin_prefix="lib"
		_plugin_suffix=".so"
		append_var CXXFLAGS "-fPIC"
		append_var LIBS "-ldl"
_mak_plugins='
PLUGIN_EXTRA_DEPS =
PLUGIN_LDFLAGS  += -shared
PRE_OBJS_FLAGS  := -Wl,-export-dynamic -Wl,-whole-archive
POST_OBJS_FLAGS := -Wl,-no-whole-archive
'
		;;
	*mingw32*)
		_plugin_prefix=""
		_plugin_suffix=".dll"
_mak_plugins='
PLUGIN_EXTRA_DEPS	= $(EXECUTABLE)
PLUGIN_LDFLAGS		:= -Wl,--enable-auto-import -shared ./libscummvm.a
PRE_OBJS_FLAGS		:= -Wl,--whole-archive
POST_OBJS_FLAGS		:= -Wl,--export-all-symbols -Wl,--no-whole-archive -Wl,--out-implib,./libscummvm.a
'
		;;
	wince)
		append_var DEFINES "-DUNCACHED_PLUGINS"
		HOSTEXEEXT=".dll"
		_plugin_prefix=""
		_plugin_suffix=".plugin"
_mak_plugins='
PLUGIN_EXTRA_DEPS	= $(EXECUTABLE)
PLUGIN_LDFLAGS		:= -shared -lscummvm -L.
PRE_OBJS_FLAGS		:= -Wl,--whole-archive
POST_OBJS_FLAGS		:= -Wl,--export-all-symbols -Wl,--no-whole-archive -Wl,--out-implib,./libscummvm.a -shared
'
		;;
	ps2)
		_elf_loader=yes
		append_var DEFINES "-DUNCACHED_PLUGINS"
_mak_plugins='
LDFLAGS         += -mno-crt0 $(PS2SDK)/ee/startup/crt0.o -Wl,-T$(srcdir)/backends/plugins/ps2/main_prog.ld
PLUGIN_LDFLAGS  += -mno-crt0 $(PS2SDK)/ee/startup/crt0.o -Wl,-T$(srcdir)/backends/plugins/ps2/plugin.ld -lstdc++ -lc
'
		;;
	psp)
		_elf_loader=yes
		append_var DEFINES "-DUNCACHED_PLUGINS"
_mak_plugins='
LDFLAGS				+= -Wl,-T$(srcdir)/backends/plugins/psp/main_prog.ld
PLUGIN_LDFLAGS		+= -Wl,-T$(srcdir)/backends/plugins/psp/plugin.ld -lstdc++ -lc
'
		;;
	webos)
		_plugin_prefix="lib"
		_plugin_suffix=".so"
		append_var CXXFLAGS "-fpic"
		append_var LIBS "-ldl"
_mak_plugins='
PLUGIN_EXTRA_DEPS =
PLUGIN_LDFLAGS  += -shared $(LDFLAGS)
PRE_OBJS_FLAGS  := -Wl,-export-dynamic -Wl,-whole-archive
POST_OBJS_FLAGS := -Wl,-no-whole-archive
'
		;;
	*)
		_dynamic_modules=no
		_mak_plugins=
		;;
	esac
	echo "$_dynamic_modules"
fi

#
# Check whether integrated ELF loader support is requested
#
define_in_config_if_yes "$_elf_loader" 'USE_ELF_LOADER'

if test "$_elf_loader" = yes; then
	_plugin_prefix=""
	_plugin_suffix=".plg"
	_mak_plugins='
PLUGIN_EXTRA_DEPS	= $(EXECUTABLE)
PLUGIN_LDFLAGS		= -nostartfiles backends/plugins/elf/version.o -Wl,-q,--just-symbols,$(EXECUTABLE),--retain-symbols-file,$(srcdir)/backends/plugins/elf/plugin.syms
PRE_OBJS_FLAGS		:= -Wl,--whole-archive
POST_OBJS_FLAGS		:= -Wl,--no-whole-archive
'"$_mak_plugins"
fi

#
# Set up some common plugin settings in config.h and config.mk, if enabled
#
define_in_config_if_yes "$_dynamic_modules" 'DYNAMIC_MODULES'

if test "$_dynamic_modules" = yes ; then
	add_line_to_config_h "#define PLUGIN_PREFIX	\"$_plugin_prefix\""
	add_line_to_config_h "#define PLUGIN_SUFFIX	\"$_plugin_suffix\""
	add_line_to_config_mk "PLUGIN_PREFIX := $_plugin_prefix"
	add_line_to_config_mk "PLUGIN_SUFFIX := $_plugin_suffix"
fi


#
# Check whether integrated MT-32 emulator support is requested
#
define_in_config_if_yes "$_mt32emu" 'USE_MT32EMU'

#
# Check whether 16bit color support is requested
#
define_in_config_if_yes "$_16bit" 'USE_RGB_COLOR'

#
# Check whether High resolution graphics support is requested
#
define_in_config_if_yes "$_highres" 'USE_HIGHRES'

#
# Check whether save games use the current time as default description
#
define_in_config_if_yes "$_savegame_timestamp" 'USE_SAVEGAME_TIMESTAMP'

#
# Check whether to enable the (hq) scalers
#
if test "$_build_scalers" = no ; then
	_build_hq_scalers=no
fi
define_in_config_if_yes "$_build_scalers" 'USE_SCALERS'

define_in_config_if_yes "$_build_hq_scalers" 'USE_HQ_SCALERS'

#
# Check for math lib
#
cat > $TMPC << EOF
int main(void) { return 0; }
EOF
cc_check -lm && append_var LIBS "-lm"

#
# Check for Ogg Vorbis
#
echocheck "Ogg Vorbis"
if test "$_vorbis" = auto ; then
	_vorbis=no
	cat > $TMPC << EOF
#include <vorbis/codec.h>
int main(void) { vorbis_packet_blocksize(0,0); return 0; }
EOF
	cc_check $OGG_CFLAGS $OGG_LIBS $VORBIS_CFLAGS $VORBIS_LIBS \
		-lvorbisfile -lvorbis -logg && _vorbis=yes
fi
if test "$_vorbis" = yes ; then
	append_var LIBS "$OGG_LIBS $VORBIS_LIBS -lvorbisfile -lvorbis -logg"
	append_var INCLUDES "$OGG_CFLAGS $VORBIS_CFLAGS"
fi
define_in_config_if_yes "$_vorbis" 'USE_VORBIS'
echo "$_vorbis"

#
# Check for Tremor
#
echocheck "Tremor"
if test "$_tremolo" = yes ; then
	_tremor=yes
fi

if test "$_tremor" = auto ; then
	_tremor=no
	cat > $TMPC << EOF
#include <tremor/ivorbiscodec.h>
int main(void) { vorbis_info_init(0); return 0; }
EOF
	cc_check $TREMOR_CFLAGS $TREMOR_LIBS -lvorbisidec && \
	_tremor=yes
fi
if test "$_tremor" = yes && test "$_vorbis" = no; then
	add_line_to_config_h '#define USE_TREMOR'
	add_line_to_config_h '#define USE_VORBIS'
	if test "$_tremolo" = yes ; then
		add_line_to_config_h '#define USE_TREMOLO'
		append_var LIBS "$TREMOR_LIBS -ltremolo"
	elif test "$_host" = ps2 ; then
		LIBS="-ltremor $LIBS"
	else
		append_var LIBS "$TREMOR_LIBS -lvorbisidec"
	fi
	append_var INCLUDES "$TREMOR_CFLAGS"
else
	if test "$_vorbis" = yes; then
		_tremor="no (Ogg Vorbis/Tremor support is mutually exclusive)"
	fi
	add_line_to_config_h '#undef USE_TREMOR'
fi
add_to_config_mk_if_yes "$_tremor" 'USE_TREMOR = 1'
echo "$_tremor"

#
# Check for FLAC
#
echocheck "FLAC >= 1.0.1"
if test "$_flac" = auto ; then
	_flac=no
	cat > $TMPC << EOF
#include <FLAC/format.h>
int main(void) { return FLAC__STREAM_SYNC_LEN >> 30; /* guaranteed to be 0 */ }
EOF
	if test "$_vorbis" = yes ; then
		cc_check $FLAC_CFLAGS $FLAC_LIBS $OGG_CFLAGS $OGG_LIBS \
			-lFLAC -logg && _flac=yes
	else
		cc_check $FLAC_CFLAGS $FLAC_LIBS \
			-lFLAC && _flac=yes
	fi
fi
if test "$_flac" = yes ; then
	if test "$_vorbis" = yes ; then
		append_var LIBS "$FLAC_LIBS $OGG_LIBS -lFLAC -logg"
	else
		append_var LIBS "$FLAC_LIBS -lFLAC"
	fi
	append_var INCLUDES "$FLAC_CFLAGS"
fi
define_in_config_if_yes "$_flac" 'USE_FLAC'
echo "$_flac"

#
# Check for MAD (MP3 library)
#
echocheck "MAD"
if test "$_mad" = auto ; then
	_mad=no
	cat > $TMPC << EOF
#include <mad.h>
int main(void) { return 0; }
EOF
	cc_check $MAD_CFLAGS $MAD_LIBS -lmad && _mad=yes
fi
if test "$_mad" = yes ; then
	append_var LIBS "$MAD_LIBS -lmad"
	append_var INCLUDES "$MAD_CFLAGS"
fi
define_in_config_if_yes "$_mad" 'USE_MAD'
echo "$_mad"

#
# Check for ALSA
#
echocheck "ALSA >= 0.9"
if test "$_alsa" = auto ; then
	_alsa=no
	cat > $TMPC << EOF
#include <alsa/asoundlib.h>
int main(void) { return (!(SND_LIB_MAJOR==0 && SND_LIB_MINOR==9)); }
EOF
	cc_check $ALSA_CFLAGS $ALSA_LIBS -lasound && _alsa=yes
fi
if test "$_alsa" = yes ; then
	append_var LIBS "$ALSA_LIBS -lasound"
	append_var INCLUDES "$ALSA_CFLAGS"
fi
define_in_config_if_yes "$_alsa" 'USE_ALSA'
echo "$_alsa"

#
# Check for libjpeg
#
echocheck "libjpeg >= v6b"
if test "$_jpeg" = auto ; then
	_jpeg=no
	cat > $TMPC << EOF
#include <stdio.h>
#include <jpeglib.h>
int main(void) {
#if JPEG_LIB_VERSION >= 62
#else
  syntax error
#endif
  return 0;
}
EOF
	cc_check $JPEG_CFLAGS $JPEG_LIBS -ljpeg && _jpeg=yes
fi
if test "$_jpeg" = yes ; then
	append_var LIBS "$JPEG_LIBS -ljpeg"
	append_var INCLUDES "$JPEG_CFLAGS"
fi
define_in_config_if_yes "$_jpeg" 'USE_JPEG'
echo "$_jpeg"

#
# Check for PNG
#
echocheck "PNG >= 1.2.8"
if test "$_png" = auto ; then
	_png=no
	cat > $TMPC << EOF
#include <png.h>
int main(void) {
#if PNG_LIBPNG_VER >= 10208
#else
  syntax error
#endif
  return 0;
}
EOF
	cc_check $PNG_CFLAGS $PNG_LIBS -lpng -lz && _png=yes
fi
if test "$_png" = yes ; then
	append_var LIBS "$PNG_LIBS -lpng -lz"
	append_var INCLUDES "$PNG_CFLAGS"
fi
define_in_config_if_yes "$_png" 'USE_PNG'
echo "$_png"

#
# Check for Theora Decoder
#
echocheck "libtheoradec >= 1.0"
if test "$_vorbis" = no ; then
	echo "skipping. no vorbis"
	_theoradec=notsupported
fi
if test "$_theoradec" = auto ; then
	_theoradec=no
	cat > $TMPC << EOF
#include <theora/theoradec.h>
#include <vorbis/codec.h>
int main(void) { th_ycbcr_buffer yuv; th_decode_ycbcr_out(NULL, yuv);  }
EOF
	cc_check $THEORADEC_CFLAGS $THEORADEC_LIBS -ltheoradec && _theoradec=yes
fi
if test "$_theoradec" = yes ; then
	append_var LIBS "$THEORADEC_LIBS -ltheoradec"
	append_var INCLUDES "$THEORADEC_CFLAGS"
fi
define_in_config_if_yes "$_theoradec" 'USE_THEORADEC'
if test ! "$_theoradec" = notsupported ; then
	echo "$_theoradec"
fi

#
# Check for the AAC decoder
#
echocheck "libfaad"
if test "$_faad" = auto ; then
	_faad=no
	cat > $TMPC << EOF
#include <neaacdec.h>
int main(void) { NeAACDecGetCapabilities(); return 0; }
EOF
	cc_check $FAAD_CFLAGS $FAAD_LIBS -lfaad && _faad=yes
fi
if test "$_faad" = yes ; then
	append_var LIBS "$FAAD_LIBS -lfaad"
	append_var INCLUDES "$FAAD_CFLAGS"
fi
define_in_config_if_yes "$_faad" 'USE_FAAD'
echo "$_faad"

#
# Check for SEQ MIDI
#
echocheck "SEQ MIDI"
if test "$_seq_midi" = auto ; then
	# TODO: Test for /dev/sequencer presence? Or maybe just for /dev ?
	# For now, we just always enable it when "posix" mode is on (backends
	# that do not want it can disable it by setting _seq_midi=no).
	_seq_midi="$_posix"
fi
define_in_config_h_if_yes "$_seq_midi" 'USE_SEQ_MIDI'
echo "$_seq_midi"

#
# Check for sndio
#
echocheck "sndio"
if test "$_sndio" = auto ; then
	_sndio=no
	cat > $TMPC << EOF
#include <sndio.h>
int main(void) { struct sio_par par; sio_initpar(&par); return 0; }
EOF
	cc_check $SNDIO_CFLAGS $SNDIO_LIBS -lsndio && _sndio=yes
fi
if test "$_sndio" = yes ; then
	append_var LIBS "$SNDIO_LIBS -lsndio"
	append_var INCLUDES "$SNDIO_CFLAGS"
fi
define_in_config_h_if_yes "$_sndio" 'USE_SNDIO'
echo "$_sndio"

#
# Check for TiMidity(++)
#
echocheck "TiMidity"
if test "$_timidity" = auto ; then
	# TODO: Is there a good possibility of auto detecting whether we
	# should include TiMidity support? It can only be used on Unix
	# currently so we use that as "detection" for now.
	_timidity="$_posix"
fi
define_in_config_h_if_yes "$_timidity" 'USE_TIMIDITY'
echo "$_timidity"

#
# Check for ZLib
#
echocheck "zlib"
if test "$_zlib" = auto ; then
	_zlib=no
	cat > $TMPC << EOF
#include <string.h>
#include <zlib.h>
int main(void) { return strcmp(ZLIB_VERSION, zlibVersion()); }
EOF
	cc_check $ZLIB_CFLAGS $ZLIB_LIBS -lz && _zlib=yes
fi
if test "$_zlib" = yes ; then
	append_var LIBS "$ZLIB_LIBS -lz"
	append_var INCLUDES "$ZLIB_CFLAGS"
fi
define_in_config_if_yes "$_zlib" 'USE_ZLIB'
echo "$_zlib"

#
# Check for LibMPEG2
#
echocheck "libmpeg2 >= 0.4.0"
if test "$_mpeg2" = auto ; then
	_mpeg2=no
	cat > $TMPC << EOF
typedef signed $type_1_byte int8_t;
typedef signed $type_2_byte int16_t;
typedef signed $type_4_byte int32_t;

typedef unsigned $type_1_byte uint8_t;
typedef unsigned $type_2_byte uint16_t;
typedef unsigned $type_4_byte uint32_t;

extern "C" {
#include <mpeg2dec/mpeg2.h>
}

int main(void) {
	#if MPEG2_RELEASE < MPEG2_VERSION(0, 4, 0)
	#error libmpeg2 version too low
	#endif

	/* mpeg2_state_t first appears in 0.4.0 */
	mpeg2_state_t state;

	return 0;
}
EOF

	if test -n "$_host"; then
		# don't execute while cross compiling
		cc_check $MPEG2_CFLAGS $MPEG2_LIBS -lmpeg2 && _mpeg2=yes
	else
		cc_check_no_clean $MPEG2_CFLAGS $MPEG2_LIBS -lmpeg2 && $TMPO$HOSTEXEEXT && _mpeg2=yes
		cc_check_clean
	fi
fi
if test "$_mpeg2" = yes ; then
	append_var INCLUDES "$MPEG2_CFLAGS"
	append_var LIBS "$MPEG2_LIBS -lmpeg2"
fi
define_in_config_if_yes "$_mpeg2" 'USE_MPEG2'
echo "$_mpeg2"

#
# Check for Sparkle if updates support is enabled
#
#
# Check is NSDockTilePlugIn protocol is supported
#
case $_host_os in
	darwin*)
		echocheck "Sparkle"
		if test "$_updates" = no; then
			_sparkle=no
		else
			if test ! -z $_sparklepath ; then
				SPARKLE_CFLAGS="-F$_sparklepath"
				SPARKLE_LIBS="-F$_sparklepath"
			fi
			if test "$_sparkle" = auto ; then
				_sparkle=no
				cat > $TMPC << EOF
#include <Cocoa/Cocoa.h>
#include <Sparkle/Sparkle.h>
int main(void) { SUUpdater *updater = [SUUpdater sharedUpdater]; return 0; }
EOF
				cc_check $SPARKLE_CFLAGS $SPARKLE_LIBS -framework Sparkle -ObjC++ -lobjc && _sparkle=yes
			fi
			if test "$_sparkle" = yes ; then
				append_var LIBS "$SPARKLE_LIBS -framework Sparkle"
				append_var INCLUDES "$SPARKLE_CFLAGS"
			fi
			define_in_config_if_yes "$_sparkle" 'USE_SPARKLE'
		fi
		echo "$_sparkle"
	;;
	*)
		_sparkle=no
	;;
esac

#
# Check is NSDockTilePlugIn protocol is supported
#
case $_host_os in
	darwin*)
		# NSDockTilePlugIn was added in OS X 10.6, so will not be available when compiling on older OS X versions.
		echocheck "DockTilePlugin"
		if test "$_osxdockplugin" = auto ; then
			_osxdockplugin=no
			cat > $TMPC << EOF
#include <Cocoa/Cocoa.h>
@interface ScummVMDockTilePlugIn : NSObject <NSDockTilePlugIn> {
}
@end
EOF
			cc_check -c -ObjC++ && _osxdockplugin=yes
		fi
		define_in_config_if_yes "$_osxdockplugin" 'USE_DOCKTILEPLUGIN'
		echo "$_osxdockplugin"
	;;
	*)
		_osxdockplugin=no
	;;
esac

#
# Check for FluidSynth
#
echocheck "FluidSynth"

append_var FLUIDSYNTH_LIBS "-lfluidsynth"
case $_host_os in
	mingw*)
		FLUIDSYNTH_STATIC_LIBS="$FLUIDSYNTH_LIBS -lglib-2.0 -lintl -liconv -lws2_32 -lole32 -lshlwapi -lpcre -ldsound -lwinmm"
	;;

	darwin*)
		FLUIDSYNTH_STATIC_LIBS="$FLUIDSYNTH_LIBS -framework Foundation -framework CoreMIDI -framework CoreAudio -lglib-2.0 -lintl -liconv -lreadline"
	;;

	iphone)
		FLUIDSYNTH_STATIC_LIBS="$FLUIDSYNTH_LIBS -framework Foundation -framework CoreMIDI -lglib-2.0 -lintl -liconv"
	;;

	*)
		FLUIDSYNTH_STATIC_LIBS="$FLUIDSYNTH_LIBS -lglib-2.0 -lintl -liconv"
	;;
esac

if test "$_fluidsynth" = auto; then
	_fluidsynth=no
	cat > $TMPC << EOF
#include <fluidsynth.h>
int main(void) { delete_fluid_settings(new_fluid_settings()); return 0; }
EOF
	cc_check_no_clean $FLUIDSYNTH_CFLAGS $FLUIDSYNTH_LIBS && _fluidsynth=yes
	if test "$_fluidsynth" != yes; then
		FLUIDSYNTH_LIBS="$FLUIDSYNTH_STATIC_LIBS"
		cc_check_no_clean $FLUIDSYNTH_CFLAGS $FLUIDSYNTH_LIBS && _fluidsynth=yes
	fi
	cc_check_clean
fi
if test "$_fluidsynth" = yes; then
	append_var LIBS "$FLUIDSYNTH_LIBS"
	append_var INCLUDES "$FLUIDSYNTH_CFLAGS"
fi
define_in_config_if_yes "$_fluidsynth" 'USE_FLUIDSYNTH'
echo "$_fluidsynth"

#
# Check for readline if text_console is enabled
#
echocheck "readline"
if test "$_text_console" = yes ; then
	_READLINE_LIBS="-lreadline"
	if test "$_readline" = auto ; then
		_readline=no
		cat > $TMPC << EOF
#include <stdio.h>
#include <readline/readline.h>
#include <readline/history.h>

int main(void) {
	char *x = readline("");
}
EOF
		cc_check_no_clean $READLINE_CFLAGS $READLINE_LIBS $_READLINE_LIBS && _readline=yes
		if test "$_readline" = no ; then
			_READLINE_LIBS="-lreadline -ltermcap"
			cc_check_no_clean $READLINE_CFLAGS $READLINE_LIBS $_READLINE_LIBS && _readline=yes
		fi
	fi
	cc_check_clean
	echo "$_readline"
else
	_readline=no
	echo "skipping (text console disabled)"
fi

if test "$_readline" = yes ; then
	append_var LIBS "$READLINE_LIBS $_READLINE_LIBS"
	append_var INCLUDES "$READLINE_CFLAGS"

	#
	# Check the type of rl_completion_entry_function.
	# It can be int(*)(const char *, int) or char *(*)(const char *, int).
	#
	cat > $TMPC << EOF
#include <stdio.h>
#include <readline/readline.h>
#include <readline/history.h>

int readline_completionFunction(const char *, int);

int main(void) {
	char *x = readline("");
	rl_completion_entry_function = &readline_completionFunction;
}
EOF
	cc_check -c && add_line_to_config_h '#define USE_READLINE_INT_COMPLETION'

fi
define_in_config_h_if_yes "$_readline" 'USE_READLINE'

define_in_config_h_if_yes "$_text_console" 'USE_TEXT_CONSOLE_FOR_DEBUGGER'

#
# Check for Unity if taskbar integration is enabled
#
echocheck "libunity"
if test "$_unix" = no || test "$_taskbar" = no; then
	_libunity=no
else
if test "$_libunity" = auto ; then
	case $_host_os in
		mingw*)
			# pkgconfig and unity are not supported on mingw
			_libunity=no
			;;
		*)
			# Unity has a lots of dependencies, update the libs and cflags var with them
			LIBUNITY_LIBS="$LIBUNITY_LIBS `pkg-config --libs 'unity > 3.8.1' 2>> "$TMPLOG"`"
			LIBUNITY_CFLAGS="$LIBUNITY_CFLAGS `pkg-config --cflags 'unity > 3.8.1' 2>> "$TMPLOG"`"
			_libunity=no
			cat > $TMPC << EOF
#include <unity.h>
int main(void) {
	unity_launcher_entry_get_for_desktop_id("scummvm.desktop");
	return 0;
}
EOF
			cc_check $LIBUNITY_CFLAGS $LIBUNITY_LIBS && _libunity=yes
			;;
	esac
fi
if test "$_libunity" = yes ; then
	if test "$LIBUNITY_CFLAGS" = "" || test "$LIBUNITY_LIBS" = ""; then
		LIBUNITY_LIBS="$LIBUNITY_LIBS `pkg-config --libs 'unity > 3.8.1' 2>> "$TMPLOG"`"
		LIBUNITY_CFLAGS="$LIBUNITY_CFLAGS `pkg-config --cflags 'unity > 3.8.1' 2>> "$TMPLOG"`"
	fi
	append_var LIBS "$LIBUNITY_LIBS"
	append_var INCLUDES "$LIBUNITY_CFLAGS"
fi
define_in_config_h_if_yes "$_libunity" 'USE_UNITY'
fi
echo "$_libunity"

#
# Check for FreeType2 to be present
#
if test "$_freetype2" != "no"; then

	# Look for the freetype-config script
	find_freetypeconfig

	if test -z "$_freetypeconfig"; then
		_freetype2=no
	else
		FREETYPE2_LIBS=`$_freetypeconfig --prefix="$_freetypepath" --libs`
		FREETYPE2_CFLAGS=`$_freetypeconfig --prefix="$_freetypepath" --cflags`

		if test "$_freetype2" = "auto"; then
			_freetype2=no

			cat > $TMPC << EOF
#include <ft2build.h>
#include FT_FREETYPE_H

int main(int argc, char *argv[]) {
	FT_Library library;
	FT_Error error = FT_Init_FreeType(&library);
	FT_Done_FreeType(library);
}
EOF

			cc_check_no_clean $FREETYPE2_CFLAGS $FREETYPE2_LIBS && _freetype2=yes
			# Modern freetype-config scripts accept --static to get all
			# required flags for static linking. We abuse this to detect
			# FreeType2 builds which are static themselves.
			if test "$_freetype2" != "yes"; then
				FREETYPE2_LIBS=`$_freetypeconfig --prefix="$_freetypepath" --static --libs 2>/dev/null`
				cc_check_no_clean $FREETYPE2_CFLAGS $FREETYPE2_LIBS && _freetype2=yes
			fi
			cc_check_clean
		fi

		if test "$_freetype2" = "yes"; then
			append_var LIBS "$FREETYPE2_LIBS"
			append_var INCLUDES "$FREETYPE2_CFLAGS"
		fi
	fi

fi

echocheck "FreeType2"
echo "$_freetype2"

define_in_config_if_yes "$_freetype2" "USE_FREETYPE2"

#
# Check for OpenGL (ES)
#
echocheck "OpenGL"

case $_backend in
	openpandora)
		# Only enable OpenGL ES on the OpanPandora if --opengl-mode=gles is passed in explicitly.
		if test "$_opengl_mode" = "gles" ; then
			append_var LIBS "-lGLES_CM -lEGL -lX11"
		else
			_opengl_mode=none
		fi
		;;
esac

if test "$_opengl_mode" = auto ; then
	case $_backend in
		sdl)
			case $_sdlversion in
				1.2.*)
					# Stock SDL 1.2 only supports OpenGL contexts.
					_opengl_mode=gl
					;;

				2.0.*)
					# SDL2 supports both OpenGL + OpenGL ES contexts.
					# However, Mac OS X only allows OpenGL context creation at
					# this time, thus we limit us to OpenGL on that platform.
					case $_host_os in
						darwin*)
							_opengl_mode=gl
							;;

						*)
							_opengl_mode=any
							;;
					esac
					;;
			esac
			;;

		tizen)
			# Tizen always runs in GLES mode
			_opengl_mode=gles
			;;

		*)
			_opengl_mode=none
			;;
	esac
fi

_opengl=yes
case $_opengl_mode in
	auto)
		# This case should never occur but better safe than sorry.
		echo "no"
		_opengl=no
		;;

	none)
		echo "no"
		_opengl=no
		;;

	any)
		echo "yes (runtime detection)"
		add_line_to_config_h "#undef USE_GLES_MODE"
		;;

	gl)
		echo "yes (OpenGL)"
		add_line_to_config_h "#define USE_GLES_MODE 0"
		;;

	gles)
		echo "yes (OpenGL ES)"
		add_line_to_config_h "#define USE_GLES_MODE 1"
		;;

	gles2)
		echo "yes (OpenGL ES 2)"
		add_line_to_config_h "#define USE_GLES_MODE 2"
		;;

	*)
		echo "invalid mode specification '$_opengl_mode'. Aborting."
		exit 1
		;;
esac

define_in_config_if_yes "$_opengl" "USE_OPENGL"

#
# Check for Linux CD-ROM support
#
case $_host_os in
	*linux*)
		echocheck "Linux CD-ROM"
		linuxcd=no
		cat > $TMPC << EOF
#include <linux/cdrom.h>
#include <sys/types.h>
int main(void) {
	int x = CDROMREADAUDIO;
	dev_t dev;
	return major(dev) + x;
}
EOF
		cc_check && linuxcd=yes
		define_in_config_if_yes "$linuxcd" 'USE_LINUXCD'
		echo "$linuxcd"
		;;
esac


#
# Check for nasm
#
if test "$_have_x86" = yes ; then
	echocheck "nasm"
	if test "$_nasm" = no ; then
		echo "disabled"
	else
		IFS="${IFS= 	}"; ac_save_ifs="$IFS"; IFS=$SEPARATOR

		for path_dir in $_nasmpath; do
			if test -x "$path_dir/nasm$NATIVEEXEEXT" ; then
				NASM="$path_dir/nasm$NATIVEEXEEXT"
				NASMFLAGS="-O1 -g"
				echo $NASM
				break
			fi
		done

		# fallback to the nasm compatible yasm
		if test x$NASM = x -o x$NASM = x'"$NASM"'; then
			for path_dir in $_nasmpath; do
				if test -x "$path_dir/yasm$NATIVEEXEEXT" ; then
					NASM="$path_dir/yasm$NATIVEEXEEXT"
					NASMFLAGS="-a x86 -m x86"
					echo $NASM
					break
				fi
			done
		fi

		IFS="$ac_save_ifs"

		if test x$NASM = x -o x$NASM = x'"$NASM"'; then
			echo "not found"
			_nasm=no
		else
			case $_host_os in
				darwin*)
					append_var NASMFLAGS "-f macho"
				;;
				mingw*)
					append_var NASMFLAGS "-f win32"
				;;
				os2-emx*)
					append_var NASMFLAGS "-f aout"
				;;
				*)
					append_var NASMFLAGS "-f elf"
				;;
			esac
			_nasm=yes
		fi
	fi
fi

define_in_config_if_yes $_nasm 'USE_NASM'

#
# Enable vkeybd / keymapper / event recorder
#
define_in_config_if_yes $_vkeybd 'ENABLE_VKEYBD'
define_in_config_if_yes $_keymapper 'ENABLE_KEYMAPPER'
define_in_config_if_yes $_eventrec 'ENABLE_EVENTRECORDER'

#
# Check if the keymapper and the event recorder are enabled simultaneously
#
if test "$_keymapper" = yes ; then
	if test "$_eventrec" = yes ; then
		echo "ERROR: The keymapper and the event recorder cannot be enabled simultaneously currently, please disable one of the two"
		exit 1
	fi
fi

# Check whether to build translation support
#
echo_n "Building translation support... "
define_in_config_if_yes $_translation 'USE_TRANSLATION'
if test "$_translation" = no ; then
	echo "no"
else
	echo_n "yes ("

	if test "$_detectlang" != yes ; then
		cat > $TMPC << EOF
#include <locale.h>
int main(void) { setlocale(LC_ALL, ""); return 0; }
EOF
		_detectlang=no
		cc_check $LDFLAGS $CXXFLAGS && _detectlang=yes
	fi

	define_in_config_h_if_yes $_detectlang 'USE_DETECTLANG'
	if test "$_detectlang" = yes ; then
		echo "with runtime language detection)"
	else
		echo "without runtime language detection)"
	fi
fi

#
# Check whether to build taskbar integration support
#
echo_n "Building taskbar integration support... "
if test "$_taskbar" = "no"; then
	echo "no"
else
	case $_host_os in
	mingw*)
		append_var LIBS "-lole32 -luuid"
		echo "win32"
		_taskbar=yes
		;;
	darwin*)
		echo "osx"
		_taskbar=yes
		;;
	*)
		if test "$_libunity" = yes; then
			echo "unity"
			_taskbar=yes
		else
			echo "no"
			_taskbar=no
		fi
		;;
	esac
fi
define_in_config_if_yes $_taskbar 'USE_TASKBAR'

#
# Check whether to build Bink video support
#
echo_n "Building Bink video support... "
define_in_config_if_yes $_bink 'USE_BINK'
echo "$_bink"

#
# Check whether to build updates support
#
echo_n "Building updates support... "
define_in_config_if_yes $_updates 'USE_UPDATES'
if test "$_updates" = yes; then
	if test "$_sparkle" = yes; then
		echo "Sparkle"
	else
		echo "$_updates"
	fi
else
	echo "$_updates"
fi

#
# Figure out installation directories
#
test "x$prefix" = xNONE && prefix=/usr/local
test "x$exec_prefix" = xNONE && exec_prefix='${prefix}'

case $_host_os in
	mingw*)
		# Windows stores all the external data files in executable file.
		;;
	*)
		append_var DEFINES "-DDATA_PATH=\\\"$datadir\\\""
		;;
esac

case $_backend in
	openpandora)
		# Add ../plugins as a path so plugins can be found when running from a .PND.
		append_var DEFINES "-DPLUGIN_DIRECTORY=\\\"../plugins\\\""
		;;
	maemo | webos)
		# The WebOS and Maemo apps want the plugins in the "lib" directory
		# without a scummvm sub directory.
		append_var DEFINES "-DPLUGIN_DIRECTORY=\\\"$libdir\\\""
		;;
	ps2)
		# PS2 bogus dir: it actually depends on launch medium
		append_var DEFINES "-DPLUGIN_DIRECTORY=\\\"host:plugins\\\""
		;;
	*)
		append_var DEFINES "-DPLUGIN_DIRECTORY=\\\"$libdir/scummvm\\\""
		;;
esac

#
# Set variables for profiling.
# We need to do it here to prevent mess-ups with the tests e.g. on the PSP
#
if test "$_enable_prof" = yes ; then
	append_var CXXFLAGS "-pg"
	append_var LDFLAGS "-pg"
	append_var DEFINES "-DENABLE_PROFILING"
fi

echo_n "Backend... "
echo_n "$_backend"

if test "$_backend" = "sdl" -a -n "$_sdlversion"; then
	echo_n " ($_sdlversion)"
fi

if test "$_nasm" = yes ; then
	echo_n ", assembly routines"
fi

if test "$_16bit" = yes ; then
	echo_n ", 16bit color"
fi

if test "$_highres" = yes ; then
	echo_n ", high resolution"
fi

if test "$_savegame_timestamp" = yes ; then
	echo_n ", savegame timestamp"
fi

if test "$_build_scalers" = yes ; then
	if test "$_build_hq_scalers" = yes ; then
		echo_n ", HQ scalers"
	else
		echo_n ", scalers"
	fi
fi

if test "$_mt32emu" = yes ; then
	echo_n ", MT-32 emulator"
fi

if test "$_text_console" = yes ; then
	echo_n ", text console"
fi

if test "$_vkeybd" = yes ; then
	echo_n ", virtual keyboard"
fi

if test "$_keymapper" = yes ; then
	echo_n ", keymapper"
fi

if test "$_eventrec" = yes ; then
	echo ", event recorder"
else
	echo
fi

#
# Some last-minute backend specific stuff, executed
# after all of CXXFLAGS, LDFLAGS, LIBS etc. have been setup
#
case $_backend in
	3ds)
		if test "$_freetype2" = yes -a "$_png" = yes; then
			append_var LIBS "-lpng"
		fi
		if test "$_tremor" = yes -o "$_flac" = yes; then
			append_var LIBS "-logg"
		fi
		;;
	android)
		# ssp at this point so the cxxtests link
		if test "$_debug_build" = yes; then
			append_var CXXFLAGS "-fstack-protector"
		else
			append_var CXXFLAGS "-fno-stack-protector"
		fi

		static_libs=''
		system_libs=''
		for lib in $LIBS; do
			case $lib in
			-lz|-lm|-ldl)
				system_libs="$system_libs $lib"
				;;
			*)
				static_libs="$static_libs $lib"
				;;
			esac
		done

		# -lgcc is carefully placed here - we want to catch
		# all toolchain symbols in *our* libraries rather
		# than pick up anything unhygenic from the Android libs.
		LIBS="-Wl,-Bstatic $static_libs -Wl,-Bdynamic -lgcc $system_libs -llog -lGLESv1_CM"
		;;
	n64)
		# Move some libs down here, otherwise some symbols requires by libvorbis aren't found
		# during linking stage
		append_var LIBS "-lc -lgcc -lnosys"
		;;
esac


#
# Engine selection
#
_engines_built_static=""
_engines_built_dynamic=""
_engines_skipped=""

# Show a message if looping over engines takes longer than 5 secs
sh -c "
	touch config.gnomes
	sleep 5
	if test -f config.gnomes; then
		printf 'Employing little gnomes...'
		rm -f config.gnomes
	fi" 2>/dev/null &

for engine in $_engines; do
	# Check whether all dependencies are available
	check_engine_deps $engine

	if test "`get_engine_sub $engine`" = "no" ; then
		# It's a main engine
		if test `get_engine_build $engine` = no ; then
			isbuilt=no
		else
			# If dynamic plugins aren't supported, mark
			# all the engines as static
			if test $_dynamic_modules = no ; then
				set_var _engine_${engine}_build "static"
			else
				# If it wasn't explicitly marked as static or
				# dynamic, use the configured default
				if test `get_engine_build $engine` = yes ; then
					set_var _engine_${engine}_build "${_plugins_default}"
				fi
			fi

			# Prepare the defines
			if test `get_engine_build $engine` = dynamic ; then
				isbuilt=DYNAMIC_PLUGIN
			else
				set_var _engine_${engine}_build "static"
				isbuilt=STATIC_PLUGIN
			fi
		fi
	else
		# It's a subengine, just say yes or no
		if test "`get_engine_build $engine`" = "no" ; then
			isbuilt=no
		else
			isbuilt=1
		fi
	fi

	# Save the settings
	defname="ENABLE_`echo $engine | tr '[a-z]' '[A-Z]'`"
	if test "$isbuilt" = "no" ; then
		add_line_to_config_mk "# $defname"
	else
		add_line_to_config_mk "$defname = $isbuilt"
	fi
done

# Sort engines to place our headline engine at start...
# No technical reason, just historical convention
headline_engine=scumm
_sorted_engines="${headline_engine}"
for engine in $_engines; do
	if test "${engine}" != "${headline_engine}" ; then
		_sorted_engines="${_sorted_engines} ${engine}"
	fi
done

# Prepare the information to be shown
for engine in $_sorted_engines; do
	if test "`get_engine_sub $engine`" = "no" ; then
		# It's a main engine
		prepare_engine_build_strings $engine
	fi
done

#
# Detection of WIP/unstable engines
#
for engine in $_engines; do
	engine_build=`get_engine_build $engine`
	engine_build_default=`get_engine_build_default $engine`
	if test $engine_build != no -a $engine_build_default = no ; then
		set_var _tainted_build "yes"
	fi
done

add_to_config_h_if_yes `get_var _tainted_build` '#define TAINTED_BUILD'

# Complete the message on slow systems
if test -f config.gnomes ; then
	# Kill does not work well here as it produces nasty 'Killed' message
	rm -rf config.gnomes
else
	echo " work is done"
fi

#
# Show which engines ("frontends") are to be built
#
echo
if test -n "$_engines_built_static" ; then
	echo "Engines (builtin):"
	echo "$_engines_built_static" | sed 's/@/\
/g
s/#/    /g'
fi

if test -n "$_engines_built_dynamic" ; then
	echo "Engines (plugins):"
	echo "$_engines_built_dynamic" | sed 's/@/\
/g
s/#/    /g'
fi

if test -n "$_engines_skipped" ; then
	echo "Engines Skipped:"
	echo "$_engines_skipped" | sed 's/@/\
/g
s/#/    /g'
fi

if test -n "$_engines_built_wip" ; then
	echo "WARNING: This ScummVM build contains the following UNSTABLE engines:"
	echo "$_engines_built_wip" | sed 's/@/\
/g
s/#/    /g'
fi

echo
echo "Creating config.h"
cat > config.h << EOF
/* This file is automatically generated by configure */
/* DO NOT EDIT MANUALLY */

#ifndef CONFIG_H
#define CONFIG_H

$_config_h_data

/* Data types */
typedef unsigned $type_1_byte byte;
typedef unsigned int uint;
typedef unsigned $type_1_byte uint8;
typedef unsigned $type_2_byte uint16;
typedef unsigned $type_4_byte uint32;
typedef signed $type_1_byte int8;
typedef signed $type_2_byte int16;
typedef signed $type_4_byte int32;
EOF

if test -n "$_def_64bit_type_unsigned"  ; then
cat >> config.h << EOF

/* 64-bit stuff */
$_def_64bit_type_signed
#if defined(__APPLE__) && !defined(__ppc__)
#ifndef _UINT64
#define _UINT64
$_def_64bit_type_unsigned
#endif
#else
$_def_64bit_type_unsigned
#endif
#define HAVE_INT64
EOF
fi

cat >> config.h << EOF

#endif /* CONFIG_H */
EOF

echo "Creating config.mk"
cat > config.mk << EOF
# -------- Generated by configure -----------

CXX := $CXX
CXXFLAGS := $CXXFLAGS
LD := $LD
LIBS += $LIBS
RANLIB := $_ranlib
STRIP := $_strip
AR := $_ar
AS := $_as
ASFLAGS := $ASFLAGS
WINDRES := $_windres
WINDRESFLAGS := $WINDRESFLAGS
STAGINGPATH=$_stagingpath
WIN32PATH=$_win32path
AMIGAOSPATH=$_amigaospath
STATICLIBPATH=$_staticlibpath
XCODETOOLSPATH=$_xcodetoolspath
SPARKLEPATH=$_sparklepath
SDLCONFIG=$_sdlconfig

ABI := $ABI

BACKEND := $_backend
MODULES += $MODULES
MODULE_DIRS += $MODULE_DIRS
EXEPRE := $HOSTEXEPRE
EXEEXT := $HOSTEXEEXT
NASM := $NASM
NASMFLAGS := $NASMFLAGS

prefix = $prefix
exec_prefix = $exec_prefix
bindir = $bindir
libdir = $libdir
datarootdir = $datarootdir
datadir = $datadir
mandir = $mandir
docdir = $docdir

$_config_mk_data

INCLUDES += $INCLUDES
OBJS += $OBJS
DEFINES += $DEFINES
LDFLAGS += $LDFLAGS

$_mak_plugins

port_mk = $_port_mk

SAVED_CONFIGFLAGS  := $SAVED_CONFIGFLAGS
SAVED_LDFLAGS      := $SAVED_LDFLAGS
SAVED_CXX          := $SAVED_CXX
SAVED_CXXFLAGS     := $SAVED_CXXFLAGS
SAVED_CPPFLAGS     := $SAVED_CPPFLAGS
SAVED_ASFLAGS      := $SAVED_ASFLAGS
SAVED_WINDRESFLAGS := $SAVED_WINDRESFLAGS
SAVED_SDL_CONFIG   := $SAVED_SDL_CONFIG
EOF

#
# Create a custom Makefile when building outside the source tree
# TODO: Add a better check than just looking for 'Makefile'
#
if test ! -f Makefile.common ; then
echo "Creating Makefile"

cat > Makefile << EOF
# -------- Generated by configure -----------
srcdir = $_srcdir
vpath %.h \$(srcdir)
vpath %.cpp \$(srcdir)
vpath %.c \$(srcdir)
vpath %.m \$(srcdir)
vpath %.mm \$(srcdir)
vpath %.asm \$(srcdir)
vpath %.s \$(srcdir)
vpath %.S \$(srcdir)
include \$(srcdir)/Makefile
EOF

fi

# Ensure engines folder exists prior to trying to generate
# files into it (used for out-of-tree-builds)
mkdir -p engines

echo "Creating engines/engines.mk"
cat > engines/engines.mk << EOF
# This file is automatically generated by configure
# DO NOT EDIT MANUALLY
# This file is being included by "Makefile.common"
EOF

for engine in $_sorted_engines; do
	j=`echo $engine | tr '[:lower:]' '[:upper:]'`
	if test "`get_engine_sub $engine`" = "no" ; then
		# main engine
		cat >> engines/engines.mk << EOF

ifdef ENABLE_$j
DEFINES += -DENABLE_$j=\$(ENABLE_$j)
MODULES += engines/$engine
EOF

	for subeng in `get_engine_subengines $engine` ; do
		k=`echo $subeng | tr '[:lower:]' '[:upper:]'`
		cat >> engines/engines.mk << EOF

ifdef ENABLE_$k
DEFINES += -DENABLE_$k
endif
EOF
	done

	cat >> engines/engines.mk << EOF
endif
EOF
	fi
done

echo "Creating engines/plugins_table.h"
cat > engines/plugins_table.h << EOF
/* This file is automatically generated by configure */
/* DO NOT EDIT MANUALLY */
// This file is being included by "base/plugins.cpp"
EOF

for engine in $_sorted_engines; do
	if test "`get_engine_sub $engine`" = "no" ; then
		j=`echo $engine | tr '[:lower:]' '[:upper:]'`
		cat >> engines/plugins_table.h << EOF
#if PLUGIN_ENABLED_STATIC($j)
LINK_PLUGIN($j)
#endif
EOF
	fi
done