path: root/config.lib

log() {
	if [ $1 = "1" ]; then echo "$2"; fi
	echo "$2" >> $config_log
}

set_default() {
	ignore_extra_parameters="0"
	# We set all kinds of defaults for params. Later on the user can override
	# most of them; but if they don't, this default is used.
	build=""
	host=""
	cc_build=""
	cc_host=""
	cxx_build=""
	cxx_host=""
	windres=""
	strip=""
	lipo=""
	awk="awk"
	os="DETECT"
	endian="AUTO"
	revision=""
	config_log="config.log"
	prefix_dir="/usr/local"
	binary_dir="games"
	data_dir="share/games/openttd"
	icon_dir="share/pixmaps"
	personal_dir=""
	custom_lang_dir=""
	second_data_dir=""
	install_dir="/"
	enable_install="0"
	enable_debug="0"
	enable_profiling="0"
	enable_dedicated="0"
	enable_network="1"
	enable_static="1"
	enable_translator="0"
	enable_assert="1"
	enable_strip="1"
	enable_universal="1"
	enable_osx_g5="0"
	enable_unicode="1"
	with_osx_sysroot="1"
	with_application_bundle="1"
	with_sdl="1"
	with_cocoa="1"
	with_zlib="1"
	with_png="1"
	with_makedepend="1"
	with_direct_music="1"
	with_sort="1"
	with_iconv="1"
	with_midi=""
	with_midi_arg=""
	with_libtimidity="1"
	with_freetype="1"
	with_fontconfig="1"
	with_psp_config="1"

	save_params_array="build host cc_build cc_host cxx_build cxx_host windres strip awk lipo os revision endian config_log prefix_dir binary_dir data_dir icon_dir personal_dir install_dir custom_lang_dir second_data_dir enable_install enable_debug enable_profiling enable_dedicated enable_network enable_static enable_translator enable_assert enable_strip with_osx_sysroot enable_universal enable_osx_g5 enable_unicode with_application_bundle with_sdl with_cocoa with_zlib with_png with_makedepend with_direct_music with_sort with_iconv with_midi with_midi_arg with_libtimidity with_freetype with_fontconfig with_psp_config CC CXX CFLAGS LDFLAGS"
}

detect_params() {
	# Walk over all params from the user and override any default settings if
	#  needed. This also handles any invalid option.
	for p in "$@"; do
		if [ -n "$prev_p" ]; then
			eval "$prev_p=\$p"
			prev_p=
			continue
		fi

		optarg=`expr "x$p" : 'x[^=]*=\(.*\)'`

		case "$p" in
			--help | -h)                  showhelp; exit 0;;

			--config-log)                 prev_p="config_log";;
			--config-log=*)               config_log="$optarg";;

			--build)                      prev_p="build";;
			--build=*)                    build="$optarg";;

			--host)                       prev_p="host";;
			--host=*)                     host="$optarg";;

			--os)                         prev_p="os";;
			--os=*)                       os="$optarg";;

			--revision=*)                 revision="$optarg";;

			--cc-build)                   prevp_p="cc_build";;
			--cc-build=*)                 cc_build="$optarg";;
			--cc-host)                    prevp_p="cc_host";;
			--cc-host=*)                  cc_host="$optarg";;
			--cxx-build)                  prevp_p="cxx_build";;
			--cxx-build=*)                cxx_build="$optarg";;
			--cxx-host)                   prevp_p="cxx_host";;
			--cxx-host=*)                 cxx_host="$optarg";;
			--windres)                    prevp_p="windres";;
			--windres=*)                  windres="$optarg";;
			--awk)                        prevp_p="awk";;
			--awk=*)                      awk="$optarg";;
			--strip)                      prevp_p="strip";;
			--strip=*)                    strip="$optarg";;
			--lipo)                       prevp_p="lipo";;
			--lipo=*)                     lipo="$optarg";;

			--endian)                     prev_p="endian";;
			--endian=*)                   endian="$optarg";;



			--prefix-dir)                 prevp_p="prefix-dir";;
			--prefix-dir=*)               prefix_dir="$optarg";;

			--binary-dir)                 prevp_p="binary-dir";;
			--binary-dir=*)               binary_dir="$optarg";;

			--data-dir)                   prevp_p="data-dir";;
			--data-dir=*)                 data_dir="$optarg";;

			--icon-dir)                   prevp_p="icon-dir";;
			--icon-dir=*)                 icon_dir="$optarg";;

			--personal-dir)               prevp_p="personal-dir";;
			--personal-dir=*)             personal_dir="$optarg";;

			--install-dir)                prevp_p="install-dir";;
			--install-dir=*)              install_dir="$optarg";;

# TODO: The next few cases will be removed when the search path patch is applied
			--custom-lang-dir)            prevp_p="custom-lang-dir";;
			--custom-lang-dir=*)          custom_lang_dir="$optarg";;

			--second-data-dir)            prevp_p="second-data-dir";;
			--second-data-dir=*)          second_data_dir="$optarg";;

			--enable-install)             enable_install="1";;
			--enable-install=*)           enable_install="$optarg";;
# TODO: End of to be removed cases


			--enable-debug)               enable_debug="1";;
			--enable-debug=*)             enable_debug="$optarg";;
			--enable-profiling)           enable_profiling="1";;
			--enable-profiling=*)         enable_profiling="$optarg";;
			--enable-dedicated)           enable_dedicated="1";;
			--enable-dedicated=*)         enable_dedicated="$optarg";;
			--enable-network=*)           enable_network="$optarg";;
			--disable-network)            enable_network="0";;
			--disable-static)             enable_static="0";;
			--enable-static)              enable_static="2";;
			--enable-static=*)            enable_static="$optarg";;
			--disable-translator)         enable_translator="0";;
			--enable-translator)          enable_translator="2";;
			--enable-translator=*)        enable_translator="$optarg";;
			--disable-assert)             enable_assert="0";;
			--enable-assert)              enable_assert="2";;
			--enable-assert=*)            enable_assert="$optarg";;
			--disable-strip)              enable_strip="0";;
			--enable-strip)               enable_strip="2";;
			--enable-strip=*)             enable_strip="$optarg";;
			--disable-universal)          enable_universal="0";;
			--enable-universal)           enable_universal="2";;
			--enable-universal=*)         enable_universal="$optarg";;
			--disable-osx-g5)             enable_osx_g5="0";;
			--enable-osx-g5)              enable_osx_g5="2";;
			--enable-osx-g5=*)            enable_osx_g5="$optarg";;
			--disable-unicode)            enable_unicode="0";;
			--enable-unicode)             enable_unicode="2";;
			--enable-unicode=*)           enable_unicode="$optarg";;

			--with-sdl)                   with_sdl="2";;
			--without-sdl)                with_sdl="0";;
			--with-sdl=*)                 with_sdl="$optarg";;

			--with-cocoa)                 with_cocoa="2";;
			--without-cocoa)              with_cocoa="0";;
			--with-cocoa=*)               with_cocoa="$optarg";;

			--with-zlib)                  with_zlib="2";;
			--without-zlib)               with_zlib="0";;
			--with-zlib=*)                with_zlib="$optarg";;

			--with-png)                   with_png="2";;
			--without-png)                with_png="0";;
			--with-png=*)                 with_png="$optarg";;
			--with-libpng)                with_png="2";;
			--without-libpng)             with_png="0";;
			--with-libpng=*)              with_png="$optarg";;

			--with-libtimidity)           with_libtimidity="2";;
			--without-libtimidity)        with_libtimidity="0";;
			--with-libtimidity=*)         with_libtimidity="$optarg";;

			--with-freetype)              with_freetype="2";;
			--without-freetype)           with_freetype="0";;
			--with-freetype=*)            with_freetype="$optarg";;
			--with-libfreetype)           with_freetype="2";;
			--without-libfreetype)        with_freetype="0";;
			--with-libfreetype=*)         with_freetype="$optarg";;

			--with-fontconfig)            with_fontconfig="2";;
			--without-fontconfig)         with_fontconfig="0";;
			--with-fontconfig=*)          with_fontconfig="$optarg";;
			--with-libfontconfig)         with_fontconfig="2";;
			--without-libfontconfig)      with_fontconfig="0";;
			--with-libfontconfig=*)       with_fontconfig="$optarg";;

			--with-psp-config)            with_psp_config="2";;
			--without-psp-config)         with_psp_config="0";;
			--with-psp-config=*)          with_psp_config="$optarg";;

			--with-makedepend)            with_makedepend="2";;
			--without-makedepend)         with_makedepend="0";;
			--with-makedepend=*)          with_makedepend="$optarg";;

			--with-direct-music)          with_direct_music="2";;
			--without-direct-music)       with_direct_music="0";;
			--with-direct-music=*)        with_direct_music="$optarg";;

			--with-sort)                  with_sort="2";;
			--without-sort)               with_sort="0";;
			--with-sort=*)                with_sort="$optarg";;

			--with-iconv)                 with_iconv="2";;
			--without-iconv)              with_iconv="0";;
			--with-iconv=*)               with_iconv="$optarg";;

			--with-midi=*)                with_midi="$optarg";;
			--with-midi-arg=*)            with_midi_arg="$optarg";;

			--without-osx-sysroot)        with_osx_sysroot="0";;
			--with-osx-sysroot)           with_osx_sysroot="2";;
			--with-osx-sysroot=*)         with_osx_sysroot="$optarg";;

			--without-application-bundle) with_applicant_bundle="0";;
			--with-application-bundle)    with_applicant_bundle="1";;
			--with-application-bundle=*)  with_applicant_bundle="$optarg";;

			CC=* | --CC=*)                CC="$optarg";;
			CXX=* | --CXX=*)              CXX="$optarg";;
			CFLAGS=* | --CFLAGS=*)        CFLAGS="$optarg";;
			LDFLAGS=* | --LDFLAGS=*)      LDFLAGS="$optarg";;

			--ignore-extra-parameters)    ignore_extra_parameters="1";;

			--*)
				if [ "$ignore_extra_parameters" = "0" ]; then
					echo "Unknown option $p"
					exit 1
				else
					echo "Unknown option $p ignored"
				fi
				;;
		esac
	done

	if [ -n "$prev_p" ]; then
		echo "configure: error: missing argument to --$prev_p"
		exit 1
	fi

	# Clean the logfile
	echo "" > $config_log
}

save_params() {
	# Here we save all params, so we can later on do an exact redo of this
	#  configuration, without having the user to re-input stuff

	echo "Running configure with following options:" >> $config_log
	echo "" >> $config_log

	configure="$CONFIGURE_EXECUTABLE --ignore-extra-parameters"
	for p in $save_params_array; do
		eval "v=\"\$$p\""
		p=`echo "$p" | sed 's/_/-/g;s/\n//g;'`
		# Only save those params that aren't empty
		configure="$configure --$p=\"$v\""
	done

	echo "$configure" >> $config_log
	echo "$configure" > config.cache
	echo "" >> $config_log
}

check_params() {
	# Some params want to be in full uppercase, else they might not work as
	# expected.. fix that here

	endian=`echo $endian | tr '[a-z]' '[A-Z]'`
	os=`echo $os | tr '[a-z]' '[A-Z]'`

	# Check if all params have valid values

	# Endian only allows AUTO, LE and, BE
	if [ -z "`echo $endian | egrep '^(AUTO|LE|BE)$'`" ]; then
		echo "configure: error: invalid option --endian=$endian"
		echo " Available options are: --endian=[AUTO|LE|BE]"
		exit 1
	fi
	# OS only allows DETECT, UNIX, OSX, FREEBSD, MORPHOS, BEOS, SUNOS, CYGWIN, MINGW, OS2, WINCE, and PSP
	if [ -z "`echo $os | egrep '^(DETECT|UNIX|OSX|FREEBSD|MORPHOS|BEOS|SUNOS|CYGWIN|MINGW|OS2|WINCE|PSP)$'`" ]; then
		echo "configure: error: invalid option --os=$os"
		echo " Available options are: --os=[DETECT|UNIX|OSX|FREEBSD|MORPHOS|BEOS|SUNOS|CYGWIN|MINGW|OS2|WINCE|PSP]"
		exit 1
	fi
	# enable_debug should be between 0 and 4
	if [ -z "`echo $enable_debug | grep '^[0123]$'`" ]; then
		echo "configure: error: invalid option --enable-debug=$enable_debug"
		echo " Available options are: --enable-debug[=0123]"
		exit 1
	fi

	detect_awk

	check_build
	check_host

	detect_os

# We might enable universal builds always on OSX targets.. but currently we don't
#	if [ "$enable_universal" = "1" ]  && [ "$os" != "OSX" ]; then
	if [ "$enable_universal" = "1" ]; then
		enable_universal="0"
	fi
	if [ "$enable_universal" = "2" ]  && [ "$os" != "OSX" ]; then
		log 1 "configure: error: --enable-universal only works on OSX"
		exit 1
	fi
	if [ "$enable_universal" = "0" ]; then
		log 1 "checking universal build... no"
	else
		log 1 "checking universal build... yes"
	fi

	# Already detected by check_build
	log 1 "checking build cc... $cc_build"
	log 1 "checking host cc... $cc_host"

	check_cxx_build
	check_cxx_host
	check_windres
	if [ "$enable_strip" != "0" ]; then
		check_strip
	else
		log 1 "checking strip... disabled"
	fi
	check_lipo
	check_makedepend

	if [ "$enable_static" = "1" ]; then
		if [ "$os" = "MINGW" ] || [ "$os" = "CYGWIN" ] || [ "$os" = "MORPHOS" ] || [ "$os" = "OSX" ]; then
			enable_static="2"
		else
			enable_static="0"
		fi
	fi

	if [ "$enable_static" != "0" ]; then
		log 1 "checking static... yes"

		if [ "$os" != "MINGW" ] && [ "$os" != "CYGWIN" ] && [ "$os" != "OSX" ] && [ "$os" != "MORPHOS" ]; then
			log 1 "WARNING: static is only known to work on Windows, MacOSX and MorphOS"
			log 1 "WARNING: use static at your own risk on this platform"

			sleep 5
		fi
	else
		log 1 "checking static... no"
	fi

	if [ "$enable_unicode" = "1" ]; then
		if [ "$os" = "MINGW" ] || [ "$os" = "CYGWIN" ]; then
			enable_unicode="2"
		else
			enable_unicode="0"
		fi
	fi

	if [ "$enable_unicode" != "0" ]; then
		log 1 "checking unicode... yes"
	else
		log 1 "checking unicode... no"
	fi

	# Show what we configured
	if [ "$enable_debug" = "0" ]; then
		log 1 "using debug level... no"
	elif [ "$enable_profiling" != "0" ]; then
		log 1 "using debug level... profiling (debug level $enable_debug)"
	else
		log 1 "using debug level... level $enable_debug"
	fi

	detect_sdl
	detect_cocoa

	if [ "$enable_dedicated" != "0" ]; then
		log 1 "checking GDI video driver... skipping"
		log 1 "checking dedicated... found"

		if [ "$enable_network" = "0" ]; then
			log 1 "WARNING: compiling a dedicated server without network is pointless"
			sleep 5
		fi
	else
		if [ "$os" = "MINGW" ] || [ "$os" = "CYGWIN" ] || [ "$os" = "WINCE" ]; then
			log 1 "checking GDI video driver... found"
		else
			log 1 "checking GDI video driver... not Windows, skipping"
		fi

		if [ -z "$sdl_config" ] && [ "$with_cocoa" = 0 ] && [ "$os" != "MINGW" ] && [ "$os" != "CYGWIN" ] && [ "$os" != "WINCE" ]; then
			log 1 "WARNING: no video driver found, building dedicated only"
			enable_dedicated="1"
			sleep 1

			log 1 "checking dedicated... found"
		else
			log 1 "checking dedicated... not selected"
		fi
	fi

	if [ "$enable_network" != "0" ]; then
		log 1 "checking network... found"
	else
		log 1 "checking network... disabled"
	fi

	if [ "$enable_translator" != "0" ]; then
		log 1 "checking translator... debug"
		# -t shows TODO items, normally they are muted
		strgen_flags="-t"
	else
		log 1 "checking translator... no"
		strgen_flags=""
	fi

	if [ "$enable_assert" != "0" ]; then
		log 1 "checking assert... enabled"
	else
		log 1 "checking assert... disabled"
	fi

	detect_zlib
	detect_png
	detect_freetype
	detect_fontconfig
	detect_iconv
	detect_pspconfig
	detect_libtimidity

	if [ "$with_direct_music" = "1" ] || [ "$with_direct_music" = "2" ]; then
		if [ "$os" != "MINGW" ] && [ "$os" != "CYGWIN" ]; then
			if [ "$with_direct_music" = "2" ]; then
				log 1 "configure: error: direct-music is only supported on Win32 targets"
				exit 1
			fi
			with_direct_music="0"

			log 1 "checking direct-music... not Windows, skipping"
		else
			check_direct_music
		fi
	fi

	detect_sort

	if [ "$os" = "OSX" ] && [ "$endian" = "AUTO" ]; then
		endian="PREPROCESSOR"
	fi

	log 1 "checking endianess... $endian"

	# Suppress language errors when there is a version defined, indicating a release
	#  It just isn't pretty if any release produces warnings in the languages.
	if [ -f "$ROOT_DIR/version" ]; then
		lang_suppress="yes"
		log 1 "suppress language errors... yes"
	else
		lang_suppress=""
		log 1 "suppress language errors... no"
	fi

	if [ "$enable_debug" = "0" ] && [ "$enable_profiling" = "0" ] && [ "$enable_strip" != "0" ]; then
		if [ "$os" = "MORPHOS" ]; then
			strip_arg="--strip-all --strip-unneeded --remove-section .comment"
		elif [ "$os" = "OSX" ]; then
			strip_arg=""
		elif [ "$os" = "OS2" ]; then
			strip_arg=""
			# OS2 uses strip via gcc, because it needs to be feed to emxbind
			LDFLAGS="$LDFLAGS -s"
		elif [ "$os" = "SUNOS" ]; then
			# The GNU strip does know -s, the non-GNU doesn't
			#  So try to detect it (in a bit of an ugly way)
			strip_arg="`$strip -s strip.test 2>/dev/null && echo \"-s\"`"
		else
			strip_arg="-s"
		fi

		log 1 "checking stripping... $strip $strip_arg"
	else
		strip=""
		log 1 "checking stripping... skipped"
	fi

	if [ "$os" != "OSX" ] && [ "$with_osx_sysroot" != "0" ]; then
		if [ "$with_osx_sysroot" = "1" ]; then
			with_osx_sysroot="0"

			log 1 "checking OSX sysroot... not OSX, skipping"
		else
			log 1 "configure: error: --with-osx-sysroot only works if OSX is the target"
			exit 1
		fi
	fi

	if [ "$with_osx_sysroot" != "0" ]; then
		if [ "$enable_universal" = "0" ] && [ "$with_osx_sysroot" != "1" ] && [ "$with_osx_sysroot" != "2" ]; then
			log 1 "checking OSX sysroot... $with_osx_sysroot"
		else
			# If autodetect and no universal, use system default
			if [ "$with_osx_sysroot" = "1" ] && [ "$enable_universal" = "0" ]; then
				log 1 "checking OSX sysroot... no (use system default)"
				with_osx_sysroot="0"
			else
				log 1 "checking OSX sysroot... automatically"
				with_osx_sysroot="3"
			fi
		fi
	else
		if [ "$os" = "OSX" ]; then
			log 1 "checking OSX sysroot... no (use system default)"
		fi
	fi

	if [ "$os" != "OSX" ] && [ "$with_application_bundle" != "0" ]; then
		if [ "$with_application_bundle" = "1" ]; then
			with_application_bundle="0"

			log 1 "checking OSX application bundle... not OSX, skipping"
		else
			log 1 "configure: error: --with-application-bundle only works if OSX is the target"
			exit 1
		fi
	fi

	if [ "$os" = "OSX" ] && [ "$with_application_bundle" = "1" ]; then
		OSXAPP="OpenTTD.app"

# TODO: remove next few lines of code when the search path patch has been applied
		if [ -n "$custom_lang_dir" ] && [ "$custom_lang_dir" != "${OSXAPP}/Contents/Lang/" ]; then
			log 1 "configure: error: --custom-lang-dir and --with-application-bundle are not compatible
			exit 1
		fi

		if [ -n "$custom_lang_dir" ] && [ "$second_data_dir" != "${OSXAPP}/Contents/Data/" ]; then
			log 1 "configure: error: --second-data-dir and --with-application-bundle are not compatible
			exit 1
		fi

		custom_lang_dir="${OSXAPP}/Contents/Lang/"
		second_data_dir="${OSXAPP}/Contents/Data/"
# TODO: remove till here
	else
		OSXAPP=""
	fi

	if [ "$os" = "OSX" ]; then
		# Test on G5

		if [ "$enable_osx_g5" != "0" ]; then
			log 1 "detecting G5... yes (forced)"
		else
			# First, are we a real OSX system, else we can't detect it
			native=`LC_ALL=C uname | tr '[A-Z]' '[a-z]' | grep darwin`
			# If $host doesn't match $build , we are cross-compiling
			if [ -n "$native" ] && [ "$build" != "$host" ]; then
				$cc_build $SRC_DIR/os/macosx/G5_detector.cpp -o G5_detector
				res=`./G5_detector`
				rm -f G5_detector
				if [ -n "$res" ]; then
					# This is G5, add flags for it
					enable_osx_g5="2"

					log 1 "detecting G5... yes"
				else
					enable_osx_g5="0"

					log 1 "detecting G5... no"
				fi
			else
				enable_osx_g5="0"

				log 1 "detecting G5... no (cross-compiling)"
			fi
		fi
	else
		if [ "$enable_osx_g5" != "0" ]; then
			log 1 "configure: error: OSX G5 selected, but not compiling for OSX"
			log 1 "configure: error: either select OSX as OS, or deselect OSX G5"

			exit 1
		fi
	fi
}

make_cflags_and_ldflags() {
	# General CFlags for BUILD
	CFLAGS_BUILD=""
	# General CFlags for HOST
	CFLAGS="$CFLAGS -D$os -DWITH_REV"
	# CFlags for HOST and C-Compiler
	CC_FLAGS=""
	# Libs to compile. In fact this is just LDFLAGS
	LIBS="-lstdc++"
	# LDFLAGS used for HOST
	LDFLAGS="$LDFLAGS"

	if [ $enable_debug = 0 ]; then
		# No debug, add default stuff
		OBJS_SUBDIR="release"
		if [ "$os" = "OSX" ]; then
			# these compilerflags makes the app run as fast as possible without making the app unstable. It works on G3 or newer
			CFLAGS="$CFLAGS -O3 -funroll-loops -fsched-interblock -falign-loops=16 -falign-jumps=16 -falign-functions=16 -falign-jumps-max-skip=15 -falign-loops-max-skip=15 -mdynamic-no-pic"
		else
			if [ "$os" = "MORPHOS" ]; then
				CFLAGS="$CFLAGS -I/gg/os-include -noixemul -fstrict-aliasing -fexpensive-optimizations"
				CFLAGS="$CFLAGS -mcpu=604 -fno-inline -mstring -mmultiple"
				LDFLAGS="$LDFLAGS -noixemul"
			fi

			CFLAGS="$CFLAGS -O2 -fomit-frame-pointer"
		fi
	else
		OBJS_SUBDIR="debug"

		# Each debug level reduces the optimalization by a bit
		if [ $enable_debug -ge 1 ]; then
			CFLAGS="$CFLAGS -g -D_DEBUG"
			if [ "$os" = "PSP" ]; then
				CFLAGS="$CFLAGS -G0"
			fi
		fi
		if [ $enable_debug -ge 2 ]; then
			CFLAGS="$CFLAGS -fno-inline"
		fi
		if [ $enable_debug -ge 3 ]; then
			CFLAGS="$CFLAGS -O0"
		else
			CFLAGS="$CFLAGS -O2"
		fi
	fi

	if [ "$enable_profiling" != "0" ]; then
		CFLAGS="$CFLAGS -p"
		LDFLAGS="$LDFLAGS -pg"
	fi

	# Enable some things only for certain GCC versions
	cc_version=`$cc_host -dumpversion | cut -c 1,3`

	if [ $cc_version -ge 29 ]; then
		CFLAGS="$CFLAGS -Wall -Wno-multichar -Wsign-compare -Wundef"
		CFLAGS="$CFLAGS -Wwrite-strings -Wpointer-arith"

		CC_CFLAGS="$CC_CFLAGS -Wstrict-prototypes"
	fi

	if [ $cc_version -ge 30 ]; then
		CFLAGS="$CFLAGS -W -Wno-unused-parameter"
	fi

	if [ $cc_version -ge 34 ]; then
		CC_CFLAGS="$CC_CFLAGS -Wdeclaration-after-statement -Wold-style-definition"
	fi

	if [ "$os" = "CYGWIN" ]; then
		CFLAGS="$CFLAGS -mwin32"
		LDFLAGS="$LDFLAGS -mwin32"
	fi
	if [ "$os" = "MINGW" ] || [ "$os" = "CYGWIN" ]; then
		CFLAGS="$CFLAGS -mno-cygwin"
		LDFLAGS="$LDFLAGS -mno-cygwin"
	fi

	if [ "$os" = "CYGWIN" ] || [ "$os" = "MINGW" ]; then
		LDFLAGS="$LDFLAGS -Wl,--subsystem,windows"
		LIBS="$LIBS -lws2_32 -lwinmm -lgdi32 -ldxguid -lole32"
		# GCC 4.0+ complains about that we break strict-aliasing.
		#  On most places we don't see how to fix it, and it doesn't
		#  break anything. So disable strict-aliasing to make the
		#  compiler all happy.
		if [ $cc_version -ge 40 ]; then
			CFLAGS="$CFLAGS -fno-strict-aliasing"
		fi
	fi

	if [ "$os" != "CYGWIN" ] && [ "$os" != "FREEBSD" ] && [ "$os" != "MINGW" ] && [ "$os" != "MORPHOS" ] && [ "$os" != "OSX" ] && [ "$os" != "WINCE" ] && [ "$os" != "PSP" ]; then
		LIBS="$LIBS -lpthread"
		LIBS="$LIBS -lrt"
	fi

	if [ "$os" != "CYGWIN" ] && [ "$os" != "MINGW" ] && [ "$os" != "WINCE" ]; then
		LIBS="$LIBS -lc"
	fi
	if [ "$os" = "WINCE" ]; then
		LIBS="$LIBS -lcoredll -lcorelibc -laygshell -lws2 -e WinMainCRTStartup"
	fi
	if [ "$os" = "PSP" ]; then
		CFLAGS="$CFLAGS -I`$psp_config -p`/include"
		LDFLAGS="$LDFLAGS -L`$psp_config -p`/lib"

		CFLAGS="$CFLAGS -fno-exceptions -fno-rtti -D_PSP_FW_VERSION=150"
		LIBS="$LIBS -D_PSP_FW_VERSION=150 -lpspdebug -lpspdisplay -lpspge -lpspctrl -lpspsdk -lpspnet -lpspnet_inet -lpspnet_apctl -lpspnet_resolver -lpsputility -lpspuser -lpspkernel -lm"
	fi

	if [ "$os" = "MORPHOS" ]; then
		# -Wstrict-prototypes generates much noise because of system headers
		CFLAGS="$CFLAGS -Wno-strict-prototypes"
	fi

	if [ "$os" = "OSX" ]; then
		LDFLAGS="$LDFLAGS -framework Cocoa"
		if [ "$enable_dedicated" = "0" ]; then
			LIBS="$LIBS -framework QuickTime"
		fi
	fi

	if [ "$os" = "BEOS" ]; then
		LIBS="$LIBS -lmidi -lbe"
	fi

	# Most targets act like UNIX, just with some additions
	if [ "$os" = "BEOS" ] || [ "$os" = "OSX" ] || [ "$os" = "MORPHOS" ] || [ "$os" = "FREEBSD" ] || [ "$os" = "SUNOS" ] || [ "$os" = "OS2" ]; then
		CFLAGS="$CFLAGS -DUNIX"
	fi
	# And others like Windows
	if [ "$os" = "MINGW" ] || [ "$os" = "CYGWIN" ] || [ "$os" = "WINCE" ]; then
		CFLAGS="$CFLAGS -DWIN"
	fi

	if [ -n "$sdl_config" ]; then
		CFLAGS="$CFLAGS -DWITH_SDL"
		CFLAGS="$CFLAGS `$sdl_config --cflags`"
		if [ "$os" != "MINGW" ] && [ "$os" != "CYGWIN" ] && [ "$os" != "WINCE" ]; then
			if [ "$enable_static" != "0" ]; then
				LIBS="$LIBS `$sdl_config --static-libs`"
			else
				LIBS="$LIBS `$sdl_config --libs`"
			fi
		fi
	fi

	if [ "$with_cocoa" != "0" ]; then
		CFLAGS="$CFLAGS -DWITH_COCOA"
		LIBS="$LIBS -F/System/Library/Frameworks -framework Cocoa -framework Carbon -framework AudioUnit"
	fi

	if [ "$with_zlib" != "0" ]; then
		if [ "$enable_static" != "0" ] && [ "$os" != "OSX" ]; then
			LIBS="$LIBS $zlib"
		else
			LIBS="$LIBS -lz"
		fi
		CFLAGS="$CFLAGS -DWITH_ZLIB"
	fi

	if [ -n "$png_config" ]; then
		CFLAGS="$CFLAGS -DWITH_PNG"
		CFLAGS="$CFLAGS `$png_config --cppflags --I_opts | tr '\n\r' '  '`"

		# The extra flags are unneeded for latest libpng-config, but some versions are so broken...
		if [ "$enable_static" != "0" ]; then
			if [ "$os" = "OSX" ]; then
				LIBS="$LIBS `$png_config --prefix`/lib/libpng.a"
			else
				LIBS="$LIBS `$png_config --static --ldflags | tr '\n\r' '  '`"
			fi
		else
			LIBS="$LIBS `$png_config --ldflags | tr '\n\r' '  '`"
		fi
	fi

	if [ -n "$fontconfig_config" ]; then
		CFLAGS="$CFLAGS -DWITH_FONTCONFIG"
		CFLAGS="$CFLAGS `$fontconfig_config --cflags | tr '\n\r' '  '`"

		if [ "$enable_static" != "0" ]; then
			if [ "$os" = "OSX" ]; then
				# fontconfig_config goes via pkg-config on all systems, which doesn't know --prefix
				# Also, despite the reason we link to the .a file ourself (because we can't use -static), we do need to ask pkg-config about possible other deps
				LIBS="$LIBS `$fontconfig_config --variable=prefix`/lib/libfontconfig.a `$fontconfig_config --libs --static | sed s/-lfontconfig//`"
			else
				LIBS="$LIBS `$fontconfig_config --libs --static | tr '\n\r' '  '`"
			fi
		else
			LIBS="$LIBS `$fontconfig_config --libs | tr '\n\r' '  '`"
		fi
	fi

	if [ -n "$freetype_config" ]; then
		CFLAGS="$CFLAGS -DWITH_FREETYPE"
		CFLAGS="$CFLAGS `$freetype_config --cflags | tr '\n\r' '  '`"

		if [ "$enable_static" != "0" ]; then
			if [ "$os" = "OSX" ]; then
				LIBS="$LIBS `$freetype_config --prefix`/lib/libfreetype.a"
			else
				# Is it possible to do static with freetype, if so: how?
				LIBS="$LIBS `$freetype_config --libs | tr '\n\r' '  '`"
			fi
		else
			LIBS="$LIBS `$freetype_config --libs | tr '\n\r' '  '`"
		fi
	fi

	if [ "$with_direct_music" != "0" ]; then
		CFLAGS="$CFLAGS -DWIN32_ENABLE_DIRECTMUSIC_SUPPORT"
		# GCC 4.0+ doesn't like the DirectX includes (gives tons of
		#  warnings on it we won't be able to fix). For now just
		#  suppress those warnings.
		if [ $cc_version -ge 40 ]; then
			CFLAGS="$CFLAGS -Wno-non-virtual-dtor"
		fi
	fi

	if [ -n "$libtimidity" ]; then
		if [ "$enable_static" != "0" ]; then
			LIBS="$LIBS $libtimidity"
		else
			LIBS="$LIBS -ltimidity"
		fi
		CFLAGS="$CFLAGS -DLIBTIMIDITY"
	fi

	if [ "$with_iconv" != "0" ]; then
		CFLAGS="$CFLAGS -DWITH_ICONV"
		LIBS="$LIBS -liconv"
		if [ "$with_iconv" != "2" ]; then
			CFLAGS="$CFLAGS -I$with_iconv/include"
			LIBS="$LIBS -L$with_iconv/lib"
		fi
	fi

	if [ -n "$with_midi" ]; then
		CFLAGS="$CFLAGS -DEXTERNAL_PLAYER=\\\\\"$with_midi\\\\\""
	fi
	if [ -n "$with_midi_arg" ]; then
		CFLAGS="$CFLAGS -DMIDI_ARG=\\\\\"$with_midi_arg\\\\\""
	fi

	if [ "$enable_dedicated" != "0" ]; then
		CFLAGS="$CFLAGS -DDEDICATED"
	fi

	if [ "$enable_unicode" != "0" ]; then
		CFLAGS="$CFLAGS -DUNICODE -D_UNICODE"
	fi

	if [ "$enable_network" != "0" ]; then
		CFLAGS="$CFLAGS -DENABLE_NETWORK"

		if [ "$os" = "BEOS" ]; then
			LDFLAGS="$LDFLAGS -lbind -lsocket"
		fi

		if [ "$os" = "SUNOS" ]; then
			LDFLAGS="$LDFLAGS -lnsl -lsocket"
		fi
	fi

	if [ "$enable_static" != "0" ]; then
		# OSX can't handle -static in LDFLAGS
		if [ "$os" != "OSX" ]; then
			LDFLAGS="$LDFLAGS -static"
		fi
	fi

	if [ "$enable_assert" = "0" ]; then
		CFLAGS="$CFLAGS -DNDEBUG"
	fi

	if [ "$enable_osx_g5" != "0" ]; then
		CFLAGS="$CFLAGS -mtune=970 -mcpu=970 -mpowerpc-gpopt"
	fi

	if [ "$with_osx_sysroot" != "0" ] && [ "$with_osx_sysroot" != "3" ]; then
		CFLAGS="$CFLAGS -isysroot /Developer/SDKs/MacOSX$with_osx_sysroot.sdk"
		LDFLAGS="$LDFLAGS -Wl,-syslibroot,/Developer/SDKs/MacOSX$with_osx_sysroot.sdk"
	fi

# TODO: remove next few lines of code when the search path patch has been applied
	if [ -n "$second_data_dir" ]; then
		CFLAGS="$CFLAGS -DSECOND_DATA_DIR=\\\\\"$second_data_dir\\\\\""
	fi

	if [ -n "$custom_lang_dir" ]; then
		CFLAGS="$CFLAGS -DCUSTOM_LANG_DIR=\\\\\"$custom_lang_dir\\\\\""
	fi
# TODO: remove till here

	if [ "$enable_install" = "1" ]; then
		if [ -n "$personal_dir" ]; then
			CFLAGS="$CFLAGS -DUSE_HOMEDIR=1 -DPERSONAL_DIR=\\\\\"$personal_dir/\\\\\""
		fi

		if [ -n "$data_dir" ]; then
			CFLAGS="$CFLAGS -DGAME_DATA_DIR=\\\\\"$prefix_dir/$data_dir/\\\\\""
		fi

		if [ -n "$icon_dir" ]; then
			CFLAGS="$CFLAGS -DICON_DIR=\\\\\"$prefix_dir/$icon_dir/\\\\\""
		fi
	fi

	if [ -n "$revision" ]; then
		log 1 "checking revision... $revision"
		log 1 "WARNING: we do not advise you to use this setting"
		log 1 "WARNING: in most cases it is not safe for network use"
		log 1 "WARNING: USE WITH CAUTION!"

		sleep 5
	elif [ -f "$ROOT_DIR/version" ]; then
		revision="`cat $ROOT_DIR/version`"

		log 1 "checking revision... $revision"
	else
		revision=""

		log 1 "checking revision... svn detection"
	fi

	log 1 "using CFLAGS... $CFLAGS $CC_CFLAGS"
	log 1 "using LDFLAGS... $LIBS $LDFLAGS"

	# Makedepend doesn't like something like: -isysroot /OSX/blabla
	#  so convert it to: -isysroot -OSX/blabla. makedepend just ignores
	#  any - command it doesn't know, so we are pretty save.
	# Lovely hackish, not?
	# Btw, this almost always comes from outside the configure, so it is
	#  not something we can control.
	if [ "$with_makedepend" != "0" ]; then
		cflags_makedep="` echo "$CFLAGS" | sed 's# /# -#g'`"
	else
		makedepend=""
	fi
}

check_compiler() {
	# Params:
	# $1 - Type for message (build / host)
	# $2 - What to fill with the found compiler
	# $3 - System to try
	# $4 - Compiler to try
	# $5 - Env-setting to try
	# $6 - GCC alike to try
	# $7 - CC alike to try
	# $8 - "0" gcc, "1" g++, "2" windres, "3" strip, "4" lipo
	# $9 - What the command is to check for

	if [ -n "$3" ]; then
		# Check for system
		if [ -z "$6" ]; then
			compiler="$3"
		else
			compiler="$3-$6"
		fi
		machine=`eval $compiler $9 2>/dev/null`
		ret=$?
		eval "$2=$compiler"

		log 2 "executing $compiler $9"
		log 2 "  returned $machine"
		log 2 "  exit code $ret"

		if ( [ -z "$machine" ] && [ "$8" != "3" ] ) || [ "$ret" != "0" ]; then
			log 1 "checking $1... $compiler not found"
			log 1 "I couldn't detect any $6 binary for $3"
			exit 1
		fi

		if [ "$machine" != "$3" ] && ( [ "$8" = "0" ] || [ "$8" = "1" ] ); then
			log 1 "checking $1... expected $3, found $machine"
			log 1 "the compiler suggests it doesn't build code for the machine you specified"
			exit 1
		fi
	elif [ -n "$4" ]; then
		# Check for manual compiler
		machine=`$4 $9 2>/dev/null`
		ret=$?
		eval "$2=$4"

		log 2 "executing $4 $9"
		log 2 "  returned $machine"
		log 2 "  exit code $ret"

		if ( [ -z "$machine" ] && [ "$8" != "3" ] ) || [ "$ret" != "0" ]; then
			log 1 "checking $1... $4 not found"
			log 1 "the selected binary doesn't seem to be a $6 binary"
			exit 1
		fi
	else
		# Nothing given, autodetect

		if [ -n "$5" ]; then
			machine=`$5 $9 2>/dev/null`
			ret=$?
			eval "$2=$5"

			log 2 "executing $5 $9"
			log 2 "  returned $machine"
			log 2 "  exit code $ret"

			# The user defined a GCC that doesn't reply to $9.. abort
			if ( [ -z "$machine" ] && [ "$8" != "3" ] ) || [ "$ret" != "0" ]; then
				log 1 "checking $1... $5 unusable"
				log 1 "the CC environment variable is set, but it doesn't seem to be a $6 binary"
				log 1 "please redefine the CC/CXX environment to a $6 binary"
				exit 1
			fi
		else
			log 2 "checking $1... CC/CXX not set (skipping)"

			# No $5, so try '$6'
			machine=`$6 $9 2>/dev/null`
			ret=$?
			eval "$2=$6"

			log 2 "executing $6 $9"
			log 2 "  returned $machine"
			log 2 "  exit code $ret"

			if ( [ -z "$machine" ] && [ "$8" != "3" ] ) || [ "$ret" != "0" ]; then
				# Maybe '$7'?
				machine=`$7 $9 2>/dev/null`
				ret=$?
				eval "$2=$7"

				log 2 "executing $7 $9"
				log 2 "  returned $machine"
				log 2 "  exit code $ret"

				# All failed, abort
				if [ -z "$machine" ]; then
					log 1 "checking $1... $6 not found"
					log 1 "I couldn't detect any $6 binary on your system"
					log 1 "please define the CC/CXX environment to where it is located"

					exit 1
				fi
			fi
		fi
	fi

	if [ "$8" != "0" ]; then
		eval "res=\$$2"
		log 1 "checking $1... $res"
	else
		log 1 "checking $1... $machine"
	fi
}

check_build() {
	check_compiler "build system type" "cc_build" "$build" "$cc_build" "$CC" "gcc" "cc" "0" "-dumpmachine"
}

check_host() {
	# By default the host is the build
	if [ -z "$host" ]; then host="$build"; fi
	check_compiler "host system type" "cc_host" "$host" "$cc_host" "$CC" "gcc" "cc" "0" "-dumpmachine"
}

check_cxx_build() {
	check_compiler "build c++" "cxx_build" "$build" "$cxx_build" "$CXX" "g++" "c++" 1 "-dumpmachine"
}

check_cxx_host() {
	# By default the host is the build
	if [ -z "$host" ]; then host="$build"; fi
	check_compiler "host c++" "cxx_host" "$host" "$cxx_host" "$CXX" "g++" "c++" 1 "-dumpmachine"
}

check_windres() {
	if [ "$os" = "MINGW" ] || [ "$os" = "CYGWIN" ] || [ "$os" = "WINCE" ]; then
		check_compiler "host windres" "windres" "$host" "$windres" "$WINDRES" "windres" "windres" "2" "-V"
	fi
}

check_strip() {
	if [ "$os" = "OS2" ]; then
		# OS2 via gcc is a bit weird.. stripping HAS to be done via emxbind, which is via gcc directly
		echo "checking host strip... using gcc -s option"
	elif [ "$os" = "OSX" ]; then
		# Most targets have -V in strip, to see if they exists... OSX doesn't.. so execute something
		echo "int main(int argc, char *argv[]) { }" > strip.test.c
		$cc_host strip.test.c -o strip.test
		check_compiler "host strip" "strip" "$host" "$strip" "$STRIP" "strip" "strip" "3" "strip.test"
		rm -f strip.test.c strip.test
	else
		check_compiler "host strip" "strip" "$host" "$strip" "$STRIP" "strip" "strip" "3" "-V"
	fi
}

check_lipo() {
	if [ "$os" = "OSX" ] && [ "$enable_universal" != "0" ]; then
		echo "int main(int argc, char *argv[]) { }" > lipo.test.c
		$cc_host lipo.test.c -o lipo.test
		check_compiler "host lipo" "lipo" "$host" "$lipo" "$LIPO" "lipo" "lipo" "4" "-info lipo.test"
		rm -f lipo.test.c lipo.test
	fi
}

check_direct_music() {
	echo "
		#include <windows.h>
		#include <dmksctrl.h>
		#include <dmusici.h>
		#include <dmusicc.h>
		#include <dmusicf.h>
		int main(int argc, char *argv[]) { }" > direct_music.test.c
	$cxx_host $CFLAGS direct_music.test.c -o direct_music.test 2> /dev/null
	res=$?
	rm -f direct_music.test.c direct_music.test

	if [ "$res" != "0" ]; then
		if [ "$with_direct_music" = "2" ]; then
			log 1 "configure: error: direct-music is not available on this system"
			exit 1
		fi
		with_direct_music="0"

		log 1 "checking direct-music... not found"
	else
		log 1 "checking direct-music... found"
	fi
}

check_makedepend() {
	if [ "$with_makedepend" = "0" ]; then
		log 1 "checking makedepend... disabled"
		return
	fi

	if [ "$with_makedepend" = "1" ] || [ "$with_makedepend" = "2" ]; then
		makedepend="makedepend"
	else
		makedepend="$with_makedepend"
	fi

	rm -f makedepend.tmp
	touch makedepend.tmp
	res=`$makedepend -fmakedepend.tmp 2>/dev/null`
	res=$?
	log 2 "executing $makedepend -f makedepend.tmp"
	log 2 "  returned `cat makedepend.tmp`"
	log 2 "  exit code $ret"

	if [ ! -s makedepend.tmp ]; then
		rm -f makedepend.tmp makedepend.tmp.bak

		if [ "$with_makedepend" = "2" ]; then
			log 1 "checking makedepend... not found"

			log 1 "I couldn't detect any makedepend on your system"
			log 1 "please locate it via --makedepend=[binary]"

			exit 1
		elif [ "$with_makedepend" != "1" ]; then
			log 1 "checking makedepend... $makedepend not found"

			log 1 "the selected file doesn't seem to be a valid makedepend binary"

			exit 1
		else
			log 1 "checking makedepend... not found"

			with_makedepend="0"
			return
		fi
	fi

	rm -f makedepend.tmp makedepend.tmp.bak

	log 1 "checking makedepend... $makedepend"
}

detect_awk() {
	# Not all awks allow gsub(), so we test for that here! It is in fact all we need...

	# These awks are known to work. Test for them explicit
	awks="gawk mawk nawk"

	awk_prefix="echo \"a.c b.c c.c\" | tr ' ' \\\\n | "
	awk_param="' { ORS = \" \" } /\.c$/   { gsub(\".c$\",   \".o\", \$0); print \$0; }' 2>/dev/null"
	awk_result="a.o b.o c.o "
	log 2 "Detecing awk..."

	log 2 "Trying: $awk_prefix $awk $awk_param"
	res=`eval $awk_prefix $awk $awk_param`
	log 2 "Result: '$res'"
	if [ "$res" != "$awk_result" ] && [ "$awk" = "awk" ]; then
		# User didn't supply his own awk, so try to detect some other known working names for an awk
		for awk in $awks; do
			log 2 "Trying: $awk_prefix $awk $awk_param"
			res=`eval $awk_prefix $awk $awk_param`
			log 2 "Result: '$res'"
			if [ "$res" = "$awk_result" ]; then break; fi
		done

		if [ "$res" != "$awk_result" ]; then
			log 1 "checking awk... not found"
			log 1 "configure: error: no awk found"
			log 1 "configure: error: please install one of the following: $awks"
			exit 1
		fi
	fi
	if [ "$res" != "$awk_result" ]; then
		log 1 "checking awk... not found"
		log 1 "configure: error: you supplied '$awk' but it doesn't seem a valid gawk or mawk"
		exit 1
	fi

	log 1 "checking awk... $awk"
}

detect_os() {
	if [ "$os" = "DETECT" ]; then
		# Detect UNIX, OSX, FREEBSD, MORPHOS, BEOS, SUNOS, CYGWIN, MINGW, OS2, WINCE, and PSP

		# Try first via dumpmachine, then via uname
		os=`echo "$host" | tr '[A-Z]' '[a-z]' | $awk '
					/linux/        { print "UNIX";    exit}
					/darwin/       { print "OSX";     exit}
					/freebsd/      { print "FREEBSD"; exit}
					/morphos/      { print "MORPHOS"; exit}
					/beos/         { print "BEOS";    exit}
					/sunos/        { print "SUNOS";   exit}
					/solaris/      { print "SUNOS";   exit}
					/cygwin/       { print "CYGWIN";  exit}
					/mingw/        { print "MINGW";   exit}
					/os2/          { print "OS2";     exit}
					/wince/        { print "WINCE";   exit}
					/psp/          { print "PSP";     exit}
		'`

		if [ -z "$os" ]; then
			os=`LC_ALL=C uname | tr '[A-Z]' '[a-z]' | $awk '
					/linux/        { print "UNIX";    exit}
					/darwin/       { print "OSX";     exit}
					/freebsd/      { print "FREEBSD"; exit}
					/morphos/      { print "MORPHOS"; exit}
					/beos/         { print "BEOS";    exit}
					/sunos/        { print "SUNOS";   exit}
					/cygwin/       { print "CYGWIN";  exit}
					/mingw/        { print "MINGW";   exit}
					/os\/2/        { print "OS2";     exit}
			'`
		fi

		if [ -z "$os" ]; then
			log 1 "detecting OS... none detected"
			log 1 "I couldn't detect your OS. Please use --with-os=OS to force one"
			log 1 "Allowed values are: UNIX, OSX, FREEBSD, MORPHOS, BEOS, SUNOS, CYGWIN, MINGW, OS2, WINCE, and PSP"
			exit 1
		fi

		log 1 "detecting OS... $os"
	else
		log 1 "forcing OS... $os"
	fi
}

detect_sdl() {
	# 0 means no, 1 is auto-detect, 2 is force
	if [ "$with_sdl" = "0" ]; then
		log 1 "checking SDL... disabled"

		sdl_config=""
		return 0
	fi

	if [ "$with_sdl" = "2" ] && [ "$with_cocoa" = "2" ]; then
		log 1 "configure: error: it is impossible to compile both SDL and COCOA"
		log 1 "configure: error: please deselect one of them and try again"
		exit 1
	fi

	if [ "$with_sdl" = "2" ] && [ "$enable_dedicated" != "0" ]; then
		log 1 "configure: error: it is impossible to compile a dedicated with SDL"
		log 1 "configure: error: please deselect one of them and try again"
		exit 1
	fi

	if [ "$enable_dedicated" != "0" ]; then
		log 1 "checking SDL... skipping"

		sdl_config=""
		return 0
	fi

	# By default on OSX we don't use SDL. The rest is auto-detect
	if [ "$with_sdl" = "1" ] && [ "$os" = "OSX" ] && [ "$with_cocoa" != "0" ]; then
		log 1 "checking SDL... OSX, skipping"

		sdl_config=""
		return 0
	fi

	if [ "$with_sdl" = "1" ] || [ "$with_sdl" = "" ] || [ "$with_sdl" = "2" ]; then
		sdl_config="sdl-config"
	else
		sdl_config="$with_sdl"
	fi

	version=`$sdl_config --version 2>/dev/null`
	ret=$?
	log 2 "executing $sdl_config --version"
	log 2 "  returned $version"
	log 2 "  exit code $ret"

	if [ -z "$version" ] || [ "$ret" != "0" ]; then
		log 1 "checking SDL... not found"

		# It was forced, so it should be found.
		if [ "$with_sdl" != "1" ]; then
			log 1 "configure: error: sdl-config couldn't be found"
			log 1 "configure: error: you supplied '$with_sdl', but it seems invalid"
			exit 1
		fi

		sdl_config=""
		return 0
	fi

	log 1 "checking SDL... found"
}

detect_cocoa() {
	# 0 means no, 1 is auto-detect, 2 is force
	if [ "$with_cocoa" = "0" ]; then
		log 1 "checking COCOA... disabled"

		return 0
	fi

	if [ "$with_cocoa" = "2" ] && [ "$enable_dedicated" != "0" ]; then
		log 1 "configure: error: it is impossible to compile a dedicated with COCOA"
		log 1 "configure: error: please deselect one of them and try again"
		exit 1
	fi

	if [ "$enable_dedicated" != "0" ]; then
		log 1 "checking COCOA... skipping"

		with_cocoa="0"
		return 0
	fi

	# By default on OSX we use COCOA. The rest doesn't support it
	if [ "$with_cocoa" = "1" ] && [ "$os" != "OSX" ]; then
		log 1 "checking COCOA... not OSX, skipping"

		with_cocoa="0"
		return 0
	fi

	if [ "$os" != "OSX" ]; then
		log 1 "checking COCOA... not OSX"

		log 1 "configure: error: COCOA video driver is only supported for OSX"
		exit 1
	fi

	log 1 "checking COCOA... found"
}

detect_library() {
	# $1 - config-param ($with_zlib value)
	# $2 - library name ('zlib', sets $zlib)
	# $3 - static library name (libz.a)
	# $4 - header name (zlib.h)

	# 0 means no, 1 is auto-detect, 2 is force
	if [ "$1" = "0" ]; then
		log 1 "checking $2... disabled"

		eval "$2=\"\""
		return 0
	fi

	log 2 "detecting $2"

	if [ "$1" = "1" ] || [ "$1" = "" ] || [ "$1" = "2" ]; then
		eval "$2=`ls -1 /usr/include/*.h 2>/dev/null | grep \"\/$4\$\"`"
		eval "res=\$$2"
		if [ -z "$res" ]; then
			log 2 "  trying /usr/include/$4... no"
			eval "$2=`ls -1 /usr/local/include/*.h 2>/dev/null | grep \"\/$4\$\"`"
		fi
		eval "res=\$$2"
		if [ -z "$res" ]; then
			log 2 "  trying /usr/local/include/$4... no"
		fi

		eval "res=\$$2"
		if [ -n "$res" ] && [ "$enable_static" != "0" ] && [ "$os" != "OSX" ]; then
			eval "res=\$$2"
			log 2 "  trying $res... found"
			# Now find the static lib, if needed
			eval "$2=`ls /lib/*.a 2>/dev/null | grep \"\/$3\$\"`"
			eval "res=\$$2"
			if [ -z "$res" ]; then
				log 2 "  trying /lib/$3... no"
				eval "$2=`ls /usr/lib/*.a 2>/dev/null | grep \"\/$3\$\"`"
			fi
			eval "res=\$$2"
			if [ -z "$res" ]; then
				log 2 "  trying /usr/lib/$3... no"
				eval "$2=`ls /usr/local/lib/*.a 2>/dev/null | grep \"\/$3\$\"`"
			fi
			eval "res=\$$2"
			if [ -z "$res" ]; then
				log 2 "  trying /usr/local/lib/$3... no"
				log 1 "configure: error: $2 couldn't be found"
				log 1 "configure: error: you requested a static link, but I can't find $3"

				exit 1
			fi
		fi
	else
		# Make sure it exists
		if [ -f "$1" ]; then
			eval "$2=`ls $1 2>/dev/null`"
		else
			eval "$2=`ls $1/$3 2>/dev/null`"
		fi
	fi

	eval "res=\$$2"
	if [ -z "$res" ]; then
		log 1 "checking $2... not found"
		if [ "$1" = "2" ]; then
			log 1 "configure: error: $2 couldn't be found"

			exit 1
		elif [ "$1" != "1" ]; then
			log 1 "configure: error: $2 couldn't be found"
			log 1 "configure: error: you supplied '$1', but it seems invalid"

			exit 1
		fi

		return 0
	fi

	eval "res=\$$2"
	log 2 "  trying $res... found"

	log 1 "checking $2... found"
}

detect_zlib() {
	detect_library "$with_zlib" "zlib" "libz.a" "zlib.h"
}

detect_libtimidity() {
	detect_library "$with_libtimidity" "libtimidity" "libtimidity.a" "timidity.h"
}

detect_png() {
	# 0 means no, 1 is auto-detect, 2 is force
	if [ "$with_png" = "0" ]; then
		log 1 "checking libpng... disabled"

		png_config=""
		return 0
	fi

	if [ "$with_zlib" = "0" ] || [ "$zlib" = "" ]; then
		log 1 "configure: error: libpng depends on zlib, which couldn't be found / was disabled"
		log 1 "configure: error: please supply --with-zlib, with a valid zlib location"
		exit 1
	fi

	if [ "$with_png" = "1" ] || [ "$with_png" = "" ] || [ "$with_png" = "2" ]; then
		png_config="libpng-config"
	else
		png_config="$with_png"
	fi

	version=`$png_config --version 2>/dev/null`
	ret=$?
	log 2 "executing $png_config --version"
	log 2 "  returned $version"
	log 2 "  exit code $ret"

	if [ -z "$version" ] || [ "$ret" != "0" ]; then
		log 1 "checking libpng... not found"

		# It was forced, so it should be found.
		if [ "$with_png" != "1" ]; then
			log 1 "configure: error: libpng-config couldn't be found"
			log 1 "configure: error: you supplied '$with_png', but it seems invalid"
			exit 1
		fi

		png_config=""
		return 0
	fi

	log 1 "checking libpng... found"
}

detect_freetype() {
	# 0 means no, 1 is auto-detect, 2 is force
	if [ "$with_freetype" = "0" ]; then
		log 1 "checking libfreetype... disabled"

		freetype_config=""
		return 0
	fi

	if [ "$with_zlib" = "0" ] || [ "$zlib" = "" ]; then
		log 1 "configure: error: libfreetype depends on zlib, which couldn't be found / was disabled"
		log 1 "configure: error: please supply --with-zlib, with a valid zlib location"
		exit 1
	fi

	if [ "$with_freetype" = "1" ] || [ "$with_freetype" = "" ] || [ "$with_freetype" = "2" ]; then
		freetype_config="freetype-config"
	else
		freetype_config="$with_freetype"
	fi

	version=`$freetype_config --version 2>/dev/null`
	ret=$?
	log 2 "executing freetype_config --version"
	log 2 "  returned $version"
	log 2 "  exit code $ret"

	if [ -z "$version" ] || [ "$ret" != "0" ]; then
		log 1 "checking libfreetype... not found"

		# It was forced, so it should be found.
		if [ "$with_freetype" != "1" ]; then
			log 1 "configure: error: freetype-config couldn't be found"
			log 1 "configure: error: you supplied '$with_freetype', but it seems invalid"
			exit 1
		fi

		freetype_config=""
		return 0
	fi

	log 1 "checking libfreetype... found"
}

detect_fontconfig() {
	# 0 means no, 1 is auto-detect, 2 is force
	if [ "$with_fontconfig" = "0" ]; then
		log 1 "checking libfontconfig... disabled"

		fontconfig_config=""
		return 0
	fi

	if [ "$os" = "MINGW" ] || [ "$os" = "CYGWIN" ] || [ "$os" = "WINCE" ]; then
		log 1 "checking libfontconfig... WIN32, skipping"
		fontconfig_config=""
		return 0
	fi

	if [ "$with_fontconfig" = "1" ] || [ "$with_fontconfig" = "" ] || [ "$with_fontconfig" = "2" ]; then
		fontconfig_config="pkg-config fontconfig"
	else
		fontconfig_config="$with_fontconfig"
	fi

	version=`$fontconfig_config --modversion 2>/dev/null`
	ret=$?
	shortversion=`echo $version | cut -c 1,3`
	log 2 "executing $fontconfig_config --modversion"
	log 2 "  returned $version"
	log 2 "  exit code $ret"

	if [ -z "$version" ] || [ "$ret" != "0" ] || [ "$shortversion" -le "22" ]; then
		if [ -n "$shortversion" ] && [ "$shortversion" -le "22" ]; then
			log 1 "checking libfontconfig... needs at least version 2.3.0, fontconfig NOT enabled"
		else
			log 1 "checking libfontconfig... not found"
		fi

		# It was forced, so it should be found.
		if [ "$with_fontconfig" != "1" ]; then
			log 1 "configure: error: fontconfig-config couldn't be found"
			log 1 "configure: error: you supplied '$with_fontconfig', but it seems invalid"
			exit 1
		fi

		fontconfig_config=""
		return 0
	fi

	log 1 "checking libfontconfig... found"
}

detect_pspconfig() {
	# 0 means no, 1 is auto-detect, 2 is force
	if [ "$with_psp_config" = "0" ]; then
		log 1 "checking psp-config... disabled"

		psp_config=""
		return 0
	fi

	if [ "$with_psp_config" = "1" ] && [ "$os" != "PSP" ]; then
		log 1 "checking psp-config... not PSP, skipping"

		psp_config="";
		return 0
	fi

	if [ "$os" != "PSP" ]; then
		log 1 "checking psp-config... not PSP"

		log 1 "configure: error: psp-config is only supported for PSP"
		exit 1
	fi

	if [ "$with_psp_config" = "1" ] || [ "$with_psp_config" = "" ] || [ "$with_psp_config" = "2" ]; then
		psp_config="psp-config"
	else
		psp_config="$with_psp_config"
	fi

	version=`$psp_config -p 2>/dev/null`
	ret=$?
	log 2 "executing $psp_config -p"
	log 2 "  returned $version"
	log 2 "  exit code $ret"

	if [ -z "$version" ] || [ "$ret" != "0" ]; then
		log 1 "checking psp-config... not found"
		log 1 "configure: error: psp-config couldn't be found"

		# It was forced, so it should be found.
		if [ "$with_psp_config" != "1" ]; then
			log 1 "configure: error: you supplied '$with_psp_config', but it seems invalid"
		fi
		exit 1
	fi

	log 1 "checking psp-config... found"
}

detect_iconv() {
	# 0 means no, 1 is auto-detect, 2 is force
	if [ "$with_iconv" = "0" ]; then
		log 1 "checking iconv... disabled"

		return 0
	fi

	if [ "$with_iconv" = "1" ] && [ "$os" != "OSX" ]; then
		log 1 "checking iconv... not OSX, skipping"
		with_iconv="0"

		return 0
	fi

	# Try to find iconv.h, seems to only thing to detect iconv with

	if [ "$with_iconv" = "1" ] || [ "$with_iconv" = "" ] || [ "$with_iconv" = "2" ]; then
		iconv=`ls -1 /usr/include 2>/dev/null | grep "iconv.h"`
		if [ -z "$iconv" ]; then
			iconv=`ls -1 /usr/local/include 2>/dev/null | grep "iconv.h"`
		fi
	else
		# Make sure it exists
		iconv=`ls $with_iconv/include/iconv.h 2>/dev/null`
	fi

	if [ -z "$iconv" ]; then
		log 1 "checking iconv... not found"
		if [ "$with_iconv" = "2" ]; then
			log 1 "configure: error: iconv couldn't be found"

			exit 1
		elif [ "$with_iconv" != "1" ]; then
			log 1 "configure: error: iconv couldn't be found"
			log 1 "configure: error: you supplied '$with_iconv', but I couldn't detect iconv in it"

			exit 1
		fi

		return 0
	fi

	if [ "$with_iconv" = "1" ]; then
		with_iconv="2"
	fi

	log 2 "found iconv in $iconv"

	log 1 "checking iconv... found"
}

_detect_sort() {
	sort_test_in="d
a
c
b"

	sort_test_out="a
b
c
d"

	log 2 "running echo <array> | $1"

	if [ "`echo \"$sort_test_in\" | $1 2>/dev/null`" = "$sort_test_out" ]; then
		sort="$1"
		log 2 "  result was valid"
	else
		log 2 "  result was invalid"
	fi
}

detect_sort() {
	if [ "$with_sort" = "0" ]; then
		log 1 "checking sort... disabled"

		return
	fi

	if [ "$with_sort" = "1" ] || [ "$with_sort" = "2" ]; then
		_detect_sort "sort"
		if [ -z "$sort" ]; then _detect_sort "/sbin/sort"; fi
		if [ -z "$sort" ]; then _detect_sort "/usr/sbin/sort"; fi
		if [ -z "$sort" ]; then _detect_sort "/usr/local/sbin/sort"; fi
		if [ -z "$sort" ]; then _detect_sort "/bin/sort"; fi
		if [ -z "$sort" ]; then _detect_sort "/usr/bin/sort"; fi
		if [ -z "$sort" ]; then _detect_sort "/usr/local/bin/sort"; fi
	else
		_detect_sort "$with_sort"
	fi

	if [ -z "$sort" ]; then
		if [ "$with_sort" = "2" ]; then
			log 1 "checking sort... not found"

			log 1 "configure: error: couldn't detect sort on your system"
			exit 1
		elif [ "$with_sort" != "1" ]; then
			log 1 "checking sort... $with_sort not found"

			log 1 "configure: error: '$with_sort' doesn't look like a sort to me"
			log 1 "configure: error: please verify its location and function and try again"

			exit 1
		else
			log 1 "checking sort... not found"
		fi
	else
		log 1 "checking sort... $sort"
	fi
}

make_sed() {
	# We check here if we are PPC, because then we need to enable FOUR_BYTE_BOOL
	#  We do this here, and not sooner, so universal builds also have this
	#  automatically correct
	# FOUR_BYTE_BOOL is needed, because C++ uses 4byte for a bool on PPC, where
	#  we use 1 byte per bool normally in C part. So convert that last one to 4
	#  bytes too, but only for PPC.
	ppc=`$cc_host -dumpmachine | grep "powerpc\|ppc"`
	if [ -n "$ppc" ]; then
		T_CFLAGS="$CFLAGS -DFOUR_BYTE_BOOL"
		osx_sysroot_version=10.3.9
	else
		T_CFLAGS="$CFLAGS"
		osx_sysroot_version=10.4u
	fi

	T_LDFLAGS="$LDFLAGS"
	if [ "$with_osx_sysroot" = "3" ]; then
		T_CFLAGS="$T_CFLAGS -isysroot /Developer/SDKs/MacOSX$osx_sysroot_version.sdk"
		T_LDFLAGS="$T_LDFLAGS -Wl,-syslibroot,/Developer/SDKs/MacOSX$osx_sysroot_version.sdk"
	fi

	SRC_OBJS_DIR="$BASE_SRC_OBJS_DIR/$OBJS_SUBDIR"

	# All the data needed to compile a single target
	#  Make sure if you compile multiple targets to
	#  use multiple OBJS_DIR, because all in-between
	#  binaries are stored in there, and nowhere else.
	SRC_REPLACE="
		s#!!CC_HOST!!#$cc_host#g;
		s#!!CXX_HOST!!#$cxx_host#g;
		s#!!CC_BUILD!!#$cc_build#g;
		s#!!CXX_BUILD!!#$cxx_build#g;
		s#!!WINDRES!!#$windres#g;
		s#!!STRIP!!#$strip $strip_arg#g;
		s#!!LIPO!!#$lipo#g;
		s#!!CC_CFLAGS!!#$CC_CFLAGS#g;
		s#!!CFLAGS!!#$T_CFLAGS#g;
		s#!!CFLAGS_BUILD!!#$CFLAGS_BUILD#g;
		s#!!STRGEN_FLAGS!!#$strgen_flags#g;
		s#!!LIBS!!#$LIBS#g;
		s#!!LDFLAGS!!#$T_LDFLAGS#g;
		s#!!BIN_DIR!!#$BIN_DIR#g;
		s#!!ROOT_DIR!!#$ROOT_DIR#g;
		s#!!MEDIA_DIR!!#$MEDIA_DIR#g;
		s#!!SOURCE_LIST!!#$SOURCE_LIST#g;
		s#!!SRC_OBJS_DIR!!#$SRC_OBJS_DIR#g;
		s#!!LANG_OBJS_DIR!!#$LANG_OBJS_DIR#g;
		s#!!SRC_DIR!!#$SRC_DIR#g;
		s#!!OSXAPP!!#$OSXAPP#g;
		s#!!LANG_DIR!!#$LANG_DIR#g;
		s#!!TTD!!#$TTD#g;
		s#!!BINARY_DIR!!#$prefix_dir/$binary_dir#g;
		s#!!DATA_DIR!!#$prefix_dir/$data_dir#g;
		s#!!ICON_DIR!!#$prefix_dir/$icon_dir#g;
		s#!!PERSONAL_DIR!!#$personal_dir#g;
		s#!!INSTALL_DIR!!#$install_dir#g;
		s#!!STRGEN!!#$STRGEN#g;
		s#!!ENDIAN_CHECK!!#$ENDIAN_CHECK#g;
		s#!!ENDIAN_FORCE!!#$endian#g;
		s#!!STAGE!!#$STAGE#g;
		s#!!MAKEDEPEND!!#$makedepend#g;
		s#!!CFLAGS_MAKEDEP!!#$cflags_makedep#g;
		s#!!SORT!!#$sort#g;
		s#!!CONFIG_CACHE_COMPILER!!#config.cache.compiler#g;
		s#!!CONFIG_CACHE_LINKER!!#config.cache.linker#g;
		s#!!CONFIG_CACHE_ENDIAN!!#config.cache.endian#g;
		s#!!CONFIG_CACHE_SOURCE!!#config.cache.source#g;
		s#!!CONFIG_CACHE_VERSION!!#config.cache.version#g;
		s#!!CONFIG_CACHE_SOURCE_LIST!!#config.cache.source.list#g;
		s#!!LANG_SUPPRESS!!#$lang_suppress#g;
		s#!!OBJS_C!!#$OBJS_C#g;
		s#!!OBJS_CPP!!#$OBJS_CPP#g;
		s#!!OBJS_MM!!#$OBJS_MM#g;
		s#!!OBJS_RC!!#$OBJS_RC#g;
		s#!!SRCS!!#$SRCS#g;
		s#!!OS!!#$os#g;
		s#!!CONFIGURE_FILES!!#$CONFIGURE_FILES#g;
		s#!!REVISION!!#$revision#g;
		s#!!AWK!!#$awk#g;
		s#!!ENABLE_INSTALL!!#$enable_install#g;
	"
}

generate_main() {
	STAGE="[MAIN]"

	make_sed

	# Create the main Makefile
	echo "Generating Makefile..."
	< $ROOT_DIR/Makefile.in sed "$SRC_REPLACE" > Makefile
	echo "# Auto-generated file -- DO NOT EDIT" > Makefile.am
	echo >> Makefile.am
	# Make the copy of the source-list, so we don't trigger an unwanted recompile
	cp $SOURCE_LIST config.cache.source.list
	# Make sure config.cache is OLDER then config.cache.source.list
	touch config.cache
}

generate_lang() {
	STAGE="[LANG]"

	make_sed

	# Create the language file
	mkdir -p $LANG_OBJS_DIR

	echo "Generating lang/Makefile..."
	< $ROOT_DIR/Makefile.lang.in sed "$SRC_REPLACE" > $LANG_OBJS_DIR/Makefile
	echo "DIRS += $LANG_OBJS_DIR" >> Makefile.am
	echo "LANG_DIRS += $LANG_OBJS_DIR" >> Makefile.am
}

generate_src_normal() {
	STAGE=$1

	make_sed

	# Create the source file
	mkdir -p $SRC_OBJS_DIR

	echo "Generating $2/Makefile..."
	< $ROOT_DIR/Makefile.src.in sed "$SRC_REPLACE" > $SRC_OBJS_DIR/Makefile
	echo "DIRS += $SRC_OBJS_DIR" >> Makefile.am
	echo "SRC_DIRS += $SRC_OBJS_DIR" >> Makefile.am
}

generate_src_osx() {
	cc_host_orig="$cc_host"
	cxx_host_orig="$cxx_host"

	BASE_SRC_OBJS_DIR="$OBJS_DIR/ppc"
	cc_host="$cc_host_orig -arch ppc"
	cxx_host="$cxx_host_orig -arch ppc"
	generate_src_normal "[PowerPC]" "objs/ppc"

	BASE_SRC_OBJS_DIR="$OBJS_DIR/intel"
	cc_host="$cc_host_orig -arch i386"
	cxx_host="$cxx_host_orig -arch i386"
	generate_src_normal "[Intel]" "objs/intel"

	BASE_SRC_OBJS_DIR="$OBJS_DIR/ppc970"
	cc_host="$cc_host_orig -arch ppc970"
	cxx_host="$cxx_host_orig -arch ppc970"
	CFLAGS="$CFLAGS -mtune=970 -mcpu=970 -mpowerpc-gpopt"
	generate_src_normal "[PowerPC G5]" "objs/ppc970"
}

generate_src() {
	if [ "$os" = "OSX" ] && [ "$enable_universal" != "0" ]; then
		generate_src_osx
	else
		generate_src_normal "[SRC]" "objs"
	fi
}

showhelp() {
	echo "'configure' configures OpenTTD."
	echo ""
	echo "Usage: $0 [OPTION]... [VAR=VALUE]..."
	echo ""
	echo "To assign environment variables (e.g., CC, CFLAGS...), specify them as"
	echo "VAR=VALUE.  See below for descriptions of some of the useful variables."
	echo ""
	echo "Defaults for the options are specified in brackets."
	echo ""
	echo "Configuration:"
	echo "  -h, --help                     display this help and exit"
	echo ""
	echo "System types:"
	echo "  --build=BUILD                  configure for building on BUILD [guessed]"
	echo "  --host=HOST                    cross-compile to build programs to run"
	echo "                                 on HOST [BUILD]"
	echo "  --windres=WINDRES              the windres to use [HOST-windres]"
	echo "  --strip=STRIP                  the strip to use [HOST-strip]"
	echo "  --awk=AWK                      the awk to use in configure [awk]"
	echo "  --lipo=LIPO                    the lipo to use (OSX ONLY) [HOST-lipo]"
	echo "  --os=OS                        the OS we are compiling for [DETECT]"
	echo "                                 DETECT/UNIX/OSX/FREEBSD/MORPHOS/BEOS/"
	echo "                                 SUNOS/CYGWIN/MINGW/OS2/WINCE/PSP"
	echo "  --endian=ENDIAN                set the endian of the HOST (AUTO/LE/BE)"
	echo "  --revision=rXXXX               overwrite the revision detection."
	echo "                                 Use with care!"
	echo ""
	echo "Paths:"
	echo "  --prefix-dir=dir               specifies the prefix for all installed"
	echo "                                 files [/usr/local]"
	echo "  --binary-dir=dir               location of the binary. Will be prefixed"
	echo "                                 with the prefix-dir [games]"
	echo "  --data-dir=dir                 location of data files (lang, data, gm)."
	echo "                                 Will be prefixed with the prefix-dir"
	echo "                                 [share/games/openttd]"
	echo "  --icon-dir=dir                 location of icons. Will be prefixed"
	echo "                                 with the prefix-dir [share/pixmaps]"
	echo "  --personal-dir=dir             location of the personal directory []"
	echo "  --install-dir=dir              specifies the root to install to."
	echo "                                 Useful to install into jails [/]"
	echo ""
# TODO: The Following 3 tags will be removed when the 'search path patch' is applied
	echo "  --second-data-dir=dir          specifies a second directory for the"
	echo "                                 data files"
	echo "  --custom-lang-dir=dir          specifies a custom directory for the"
	echo "                                 language files"
	echo "  --enable-install               make a binary that uses the specified"
	echo "                                 data-dir and icon-dir"
	echo ""
	echo "Features and packages:"
	echo "  --enable-debug[=LVL]           enable debug-mode (LVL=[0123], 0 is release)"
	echo "  --enable-profiling             enables profiling"
	echo "  --enable-dedicated             compile a dedicated server (without video)"
	echo "  --enable-static                enable static compile (doesn't work for"
	echo "                                 all HOSTs)"
	echo "  --enable-translator            enable extra output for translators"
	echo "  --enable-universal             enable universal builds (OSX ONLY)"
	echo "  --enable-osx-g5                enables optimalizations for G5 (OSX ONLY)"
	echo "  --disable-network              disable network support"
	echo "  --disable-assert               disable asserts (continue on errors)"
	echo "  --disable-strip                disable any possible stripping"
	echo "  --without-osx-sysroot          disable the automatic adding of sysroot "
	echo "                                 (OSX ONLY)"
	echo "  --without-application-bundle   disable generation of application bundle"
	echo "                                 (OSX ONLY)"
	echo "  --with-direct-music            enable direct music support (Win32 ONLY)"
	echo "  --with-sort=sort               define a non-default location for sort"
	echo "  --with-midi=midi               define which midi-player to use"
	echo "  --with-midi-arg=arg            define which args to use for the"
	echo "                                 midi-player"
	echo "  --with-cocoa                   enables COCOA video driver (OSX ONLY)"
	echo "  --with-sdl[=sdl-config]        enables SDL video driver support"
	echo "  --with-zlib[=zlib.a]           enables zlib support"
	echo "  --with-png[=libpng-config]     enables libpng support"
	echo "  --with-freetype[=freetype-config]"
	echo "                                 enables libfreetype support"
	echo "  --with-fontconfig[=pkg-config fontconfig]"
	echo "                                 enables fontconfig support"
	echo "  --with-iconv[=iconv-path]      enables iconv support"
	echo "  --with-psp-config[=psp-config] enables psp-config support (PSP ONLY)"
	echo "  --with-makedepend[=makedepend] enables makedepend support"
	echo ""
	echo "Some influential environment variables:"
	echo "  CC                             C compiler command"
	echo "  CXX                            C++ compiler command"
	echo "  CFLAGS                         C compiler flags"
	echo "  WINDRES                        windres command"
	echo "  LDFLAGS                        linker flags, e.g. -L<lib dir> if you"
	echo "                                 have libraries in a nonstandard"
	echo "                                 directory <lib dir>"
	echo ""
	echo "Use these variables to override the choices made by 'configure' or to help"
	echo "it to find libraries and programs with nonstandard names/locations."
}