config.lib

log() {
	if [ $1 = "1" ]; then
		shift
		echo "$@"
	else
		shift
	fi
	echo "$@" >> $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=""
	as_host=""
	strip=""
	lipo=""
	awk="awk"
	os="DETECT"
	cpu_type="DETECT"
	cpu="68030"
	config_log="config.log"
	prefix_dir="/usr/local"
	binary_dir="games"
	doc_dir="share/doc/opendune"
	data_dir="share/games/opendune"
	icon_dir="share/icons/hicolor/32x32/apps"
	install_dir="/"
	binary_name="opendune"
	enable_debug="0"
	enable_profiling="0"
	enable_lto="0"
	enable_static="1"
	enable_assert="1"
	enable_strip="0"
	enable_universal="0"
	with_osx_sysroot="1"
	with_sdl="1"
	with_sdlimage="1"
	with_sdl2="1"
	with_sdl2image="1"
	with_asound="1"
	with_oss="1"
	with_pulse="1"
	with_kai="1"
	with_munt="1"
	with_fluid="0"
	enable_builtin_depend="1"
	with_makedepend="0"
	with_sort="1"
	with_distcc="1"
	with_ccache="1"

	save_params_array="
		build
		host
		cc_build
		cc_host
		strip
		lipo
		awk
		os
		cpu_type
		cpu
		config_log
		prefix_dir
		binary_dir
		data_dir
		icon_dir
		install_dir
		binary_name
		enable_debug
		enable_profiling
		enable_lto
		enable_static
		enable_assert
		enable_strip
		enable_universal
		with_osx_sysroot
		with_sdl
		with_sdlimage
		with_sdl2
		with_sdl2image
		with_asound
		with_oss
		with_pulse
		with_munt
		enable_builtin_depend
		with_makedepend
		with_sort
		with_distcc
		with_ccache
	CC CFLAGS LDFLAGS CFLAGS_BUILD LDFLAGS_BUILD"
}

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";;

			--cpu-type)                   prev_p="cpu_type";;
			--cpu-type=*)                 cpu_type="$optarg";;

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

			--cc-build)                   prev_p="cc_build";;
			--cc-build=*)                 cc_build="$optarg";;
			--cc-host)                    prev_p="cc_host";;
			--cc-host=*)                  cc_host="$optarg";;
			--awk)                        prev_p="awk";;
			--awk=*)                      awk="$optarg";;
			--strip)                      prev_p="strip";;
			--strip=*)                    strip="$optarg";;
			--lipo)                       prev_p="lipo";;
			--lipo=*)                     lipo="$optarg";;


			# Alias --prefix with --prefix-dir, for compatibility with GNU autotools
			--prefix-dir | --prefix)      prev_p="prefix_dir";;
			--prefix-dir=* | --prefix=*)  prefix_dir="$optarg";;

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

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

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

			--binary-name)                prev_p="binary_name";;
			--binary-name=*)              binary_name="$optarg";;

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



			--enable-debug)               enable_debug="1";;
			--enable-debug=*)             enable_debug="$optarg";;
			--enable-profiling)           enable_profiling="1";;
			--enable-profiling=*)         enable_profiling="$optarg";;
			--enable-lto)                 enable_lto="1";;
			--enable-lto=*)               enable_lto="$optarg";;
			--enable-ipo)                 enable_lto="1";;
			--enable-ipo=*)               enable_lto="$optarg";;
			--disable-static)             enable_static="0";;
			--enable-static)              enable_static="2";;
			--enable-static=*)            enable_static="$optarg";;
			--disable-assert)             enable_assert="0";;
			--enable-assert)              enable_assert="2";;
			--enable-assert=*)            enable_assert="$optarg";;
			--disable-strip)              enable_strip="0";;
			--enable-strip)               enable_strip="2";;
			--enable-strip=*)             enable_strip="$optarg";;
			--disable-universal)          enable_universal="0";;
			--enable-universal)           enable_universal="i386 ppc x86_64";;
			--enable-universal=*)         enable_universal="$optarg";;

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

			--with-sdl2)                  with_sdl2="2";;
			--without-sdl2)               with_sdl2="0";;
			--with-sdl2=*)                with_sdl2="$optarg";;

			--with-asound)                with_asound="2";;
			--without-asound)             with_asound="0";;
			--with-asound=*)              with_asound="$optarg";;
			--with-alsa)                  with_asound="2";;
			--without-alsa)               with_asound="0";;
			--with-alsa=*)                with_asound="$optarg";;

			--with-oss)                   with_oss="2";;
			--without-oss)                with_oss="0";;

			--with-pulse)                 with_pulse="2";;
			--without-pulse)              with_pulse="0";;
			--with-pulse=*)               with_pulse="$optarg";;

			--with-kai)                   with_kai="2";;
			--without-kai)                with_kai="0";;
			--with-kai=*)                 with_kai="$optarg";;

			--with-munt)                  with_munt="2";;
			--without-munt)               with_munt="0";;
			--with-munt=*)                with_munt="$optarg";;

			--with-fluid)                 with_fluid="2";;
			--without-fluid)              with_fluid="0";;
			--with-fluid=*)               with_fluid="$optarg";;

			--disable-builtin-depend)     enable_builtin_depend="0";;
			--enable-builtin-depend)      enable_builtin_depend="2";;
			--enable-builtin-depend=*)    enable_builtin_depend="$optarg";;

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

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

			--without-distcc)             with_distcc="0";;
			--with-distcc)                with_distcc="2";;
			--with-distcc=*)              with_distcc="$optarg";;

			--without-ccache)             with_ccache="0";;
			--with-ccache)                with_ccache="2";;
			--with-ccache=*)              with_ccache="$optarg";;

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

			CC=* | --CC=*)                CC="$optarg";;
			CFLAGS=* | --CFLAGS=*)        CFLAGS="$optarg";;
			LDFLAGS=* | --LDFLAGS=*)      LDFLAGS="$optarg";;
			CFLAGS_BUILD=* | --CFLAGS_BUILD=* | --CFLAGS-BUILD=*)     CFLAGS_BUILD="$optarg";;
			LDFLAGS_BUILD=* | --LDFLAGS_BUILD=* | --LDFLAGS-BUILD=*)   LDFLAGS_BUILD="$optarg";;

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

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

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

	# Clean the logfile
	echo "" > $config_log
	log 2 "Invocation: $0 $*"
}

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 "$p" | sed 's@_@-@g;s@\n@@g;s@ @\\ @g'`
		# Only save those params that aren't empty
		configure="$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

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

	# Check if all params have valid values

	# OS only allows DETECT, UNIX, OSX, FREEBSD, OPENBSD, MORPHOS, BEOS, HAIKU, SUNOS, CYGWIN, MINGW, OS2, DOS, and WINCE, TOS
	if [ -z "`echo $os | grep -E '^(DETECT|UNIX|OSX|FREEBSD|OPENBSD|NETBSD|HPUX|MORPHOS|BEOS|HAIKU|SUNOS|CYGWIN|MINGW|OS2|DOS|WINCE|TOS)$'`" ]; then
		log 1 "configure: error: invalid option --os=$os"
		log 1 " Available options are: --os=[DETECT|UNIX|OSX|FREEBSD|OPENBSD|NETBSD|HPUX|MORPHOS|BEOS|HAIKU|SUNOS|CYGWIN|MINGW|OS2|DOS|WINCE|TOS]"
		exit 1
	fi
	# cpu_type can be either 32 or 64
	if [ -z "`echo $cpu_type | grep -E -- '^(32|64|DETECT)$'`" ]; then
		log 1 "configure: error: invalid option --cpu-type=$cpu_type"
		log 1 " Available options are: --cpu-type[=DETECT|32|64]"
		exit 1
	fi
	# enable_debug should be between 0 and 4
	if [ -z "`echo $enable_debug | grep -E -- '^[0123]$'`" ]; then
		log 1 "configure: error: invalid option --enable-debug=$enable_debug"
		log 1 " Available options are: --enable-debug[=0123]"
		exit 1
	fi

	detect_awk

	detect_os

	check_build
	check_host

	# cpu is the m68k CPU to target; it is only used for TOS, so say so and
	# carry on rather than failing the build for another OS
	if [ "$os" = "TOS" ]; then
		if [ -z "`echo $cpu | grep -E -- '^(68000|68010|68020|68030|68040|68060)$'`" ]; then
			log 1 "configure: error: invalid option --cpu=$cpu"
			log 1 " Available options are: --cpu[=68000|68010|68020|68030|68040|68060]"
			exit 1
		fi
	elif [ "$cpu" != "68030" ]; then
		log 1 "WARNING: --cpu is not available on $os, ignoring --cpu=$cpu"
	fi

	# Check for universal builds; they only make sense for OSX, so fail if enabled for another OS
	if [ "$enable_universal" = "0" ]; then
		log 1 "checking universal build... no"
	else
		if [ "$os" != "OSX" ]; then
			log 1 "configure: error: --enable-universal only works on OSX"
			exit 1
		fi
		log 1 "checking universal build... yes, for: $enable_universal"
	fi

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

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

	if [ "$enable_builtin_depend" != "0" ]; then
		log 1 "checking builtin depend... yes"
		makedepend="\$(SRC_OBJS_DIR)/\$(DEPEND)"
	else
		log 1 "checking builtin depend... no"
	fi

	check_makedepend
	detect_cputype

	if [ "$enable_static" = "1" ]; then
		if [ "$os" = "MINGW" ] || [ "$os" = "CYGWIN" ] || [ "$os" = "MORPHOS" ] || [ "$os" = "DOS" ]; 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" ] && [ "$os" != "DOS" ]; then
			log 1 "WARNING: static is only known to work on Windows, DOS, 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

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

	if [ "$enable_lto" != "0" ]; then
		# GCC 4.5 outputs '%{flto}', GCC 4.6 outputs '%{flto*}'
		has_lto=`($cc_build -dumpspecs 2>&1 | grep '\%{flto') || ($cc_build -help ipo 2>&1 | grep '\-ipo')`
		if [ -n "$has_lto" ]; then
			log 1 "using link time optimization... yes"
		else
			enable_lto="0"
			log 1 "using link time optimization... no"
			log 1 "WARNING: you selected link time optimization but it is not found."
		fi
	else
		log 1 "using link time optimization... no"
	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
			# Sysroot manually specified? Check for usability
			log 1 "checking OSX sysroot... $with_osx_sysroot"
			if ! check_osx_sdk "$with_osx_sysroot"; then
				log 1 "Passed sysroot not found/not functional"
				exit 1
			fi
		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)"
			else
				log 1 "checking OSX sysroot... automatically"
				detect_osx_sdk
			fi
		fi

		if [ -n "$osx_sdk_path" ]; then
			if [ "$enable_universal" != "0" ]; then
				if [ -z "$osx_sdk_104_path" ]; then
					log 1 "WARNING: Could not find a usable 10.4u SDK, the resulting"
					log 1 "WARNING: binary will only run on OSX 10.5 or later"
					osx_sdk_104_path="$osx_sdk_path"
				fi
				OSX_SYSROOT="-isysroot $osx_sdk_104_path"
				OSX_LD_SYSROOT="-Wl,-syslibroot,$osx_sdk_104_path"
			else
				OSX_SYSROOT="-isysroot $osx_sdk_path"
				OSX_LD_SYSROOT="-Wl,-syslibroot,$osx_sdk_path"
			fi
		fi
	else
		if [ "$os" = "OSX" ]; then
			log 1 "checking OSX sysroot... no (use system default)"
		fi
	fi

	if [ "$os" = "TOS" ]; then
		with_sdl2="0"
		with_sdl="0"
		with_asound="0"
		with_oss="0"
		with_pulse="0"
		with_munt="0"
		with_fluid="0"
	fi
	if [ "$os" = "FREEBSD" ] && [ "$with_oss" != "0" ] && [ "$with_asound" = "1" ] ; then
		# prefers OSS to ALSA under FreeBSD
		with_asound="0"
	fi
	detect_sdl2
	detect_sdl
	detect_asound
	detect_oss
	detect_pulseaudio
	detect_kai
	detect_munt

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

	detect_sort

	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 [ "$with_distcc" = "0" ]; then
		log 1 "checking distcc... no"
	elif [ "$with_distcc" = "1" ]; then
		with_distcc="0"

		log 1 "checking distcc... no (only used when forced)"
	elif [ "$with_distcc" = "2" ]; then
		distcc="distcc"
	else
		distcc="$with_distcc"
	fi
	if [ "$with_distcc" != "0" ]; then
		res="`$distcc --version 2>/dev/null | head -n 1 | cut -b 1-6`"
		if [ "$res" != "distcc" ]; then
			distcc=""
			log 1 "checking distcc... no"
			if [ "$with_distcc" = "2" ]; then
				log 1 "configure: error: no distcc detected, but was forced to be used"
				exit 1
			fi
			if [ "$with_distcc" != "1" ]; then
				log 1 "configure: error: '$with_distcc' doesn't seem a distcc to me"
				exit 1
			fi
		fi

		log 1 "checking distcc... $distcc"
	fi

	if [ "$with_ccache" = "0" ]; then
		log 1 "checking ccache... no"
	elif [ "$with_ccache" = "1" ]; then
		with_ccache="0"

		log 1 "checking ccache... no (only used when forced)"
	elif [ "$with_ccache" = "2" ]; then
		ccache="ccache"
	else
		ccache="$with_ccache"
	fi
	if [ "$with_ccache" != "0" ]; then
		res="`$ccache --version 2>/dev/null | head -n 1 | cut -b 1-6`"
		if [ "$res" != "ccache" ]; then
			ccache=""
			log 1 "checking ccache... no"
			if [ "$with_ccache" = "2" ]; then
				log 1 "configure: error: no ccache detected, but was forced to be used"
				exit 1
			fi
			if [ "$with_ccache" != "1" ]; then
				log 1 "configure: error: '$with_ccache' doesn't seem a ccache to me"
				exit 1
			fi
		fi

		log 1 "checking ccache... $ccache"
	fi

	if [ "$os" = "OSX" ] ; then
		OSXAPP="OpenDUNE.app"
	else
		OSXAPP=""
	fi

	if [ -d "$ROOT_DIR/.svn" ] && [ -n "`svn help 2>/dev/null`" ]; then
		log 1 "checking revision... svn detection"
	elif [ -d "$ROOT_DIR/.git" ] && [ -n "`git help 2>/dev/null`" ]; then
		log 1 "checking revision... git detection"
	elif [ -d "$ROOT_DIR/.hg" ] && [ -n "`hg help 2>/dev/null`" ]; then
		log 1 "checking revision... hg detection"
	elif [ -f "$ROOT_DIR/.ottdrev" ]; then
		log 1 "checking revision... source tarball"
	else
		log 1 "checking revision... no detection"
		log 1 "WARNING: there is no means to determine the version."
		log 1 "WARNING: please use a subversion, mercurial, or git checkout of OpenDUNE."
		log 1 "WARNING: USE WITH CAUTION!"

		sleep 5
	fi

	if [ -n "$install_dir" ]
	then
		log 1 "installation directory... $install_dir"
	else
		log 1 "installation directory... none"
	fi
}

make_compiler_cflags() {
	# Params:
	# $1 - compiler
	# $2 - name of the cflags variable
	# $4 - name of the ldflags variable
	# $5 - name of the features variable

	eval eval "flags=\\\$$2"
	eval eval "ldflags=\\\$$3"
	eval eval "features=\\\$$4"

	if [ `basename $1 | cut -c 1-3` = "icc" ]; then
		# Enable some things only for certain ICC versions
		cc_version=`$1 -dumpversion | cut -d. -f 1-2 | sed s@\\\.@@g`

		flags="$flags -rdynamic"
		ldflags="$ldflags -rdynamic"

		if [ -z "$first_time_icc_check" ]; then
			first_time_icc_check=no
			if [ $cc_version -lt 90 ]; then
				log 1 "WARNING: you seem to be using a very old version of ICC"
				log 1 "WARNING: OpenDUNE hasn't been tested with this version"
				sleep 5
			elif [ $cc_version -lt 120 ]; then
				log 1 "WARNING: you seem to be using an unsupported ICC version"
				log 1 "WARNING: ICC older than 12.0 is known to fail to compile OpenDUNE"
				sleep 5
			fi
		fi

		flags="$flags -Wall"
		# remark #111: statement is unreachable
		flags="$flags -wd111"
		# remark #181: argument is incompatible with corresponding format string conversion
		# ICC is very picky about signedness of operands, warnings provided by GCC are enough
		flags="$flags -wd181"
		# remark #271: trailing comma is nonstandard
		flags="$flags -wd271"
		# remark #280: selector expression is constant
		flags="$flags -wd280"
		# remark #304: access control not specified ("public" by default)
		flags="$flags -wd304"
		# remark #383: value copied to temporary, reference to temporary used
		flags="$flags -wd383"
		# remark #444: destructor for base class ... is not virtual
		flags="$flags -wd444"
		# remark #593: variable ... was set but never used
		flags="$flags -wd593"
		# warning #654: overloaded virtual function ... is only partially overridden in class ...
		flags="$flags -wd654"
		# remark #810: conversion from ... to ... may lose significant bits
		flags="$flags -wd810"
		# remark #869: parameter ... was never referenced
		flags="$flags -wd869"
		# warning #873: function ... ::operator new ... has no corresponding operator delete ...
		flags="$flags -wd873"
		# remark #981: operands are evaluated in unspecified order
		flags="$flags -wd981"
		# remark #1418: external function definition with no prior declaration
		flags="$flags -wd1418"
		# remark #1419: external declaration in primary source file
		flags="$flags -wd1419"
		# remark #1572: floating-point equality and inequality
		flags="$flags -wd1572"
		# remark #1599: declaration hides variable/parameter ...
		flags="$flags -wd1599"
		# remark #1720: function ... ::operator new ... has no corresponding member operator delete ...
		flags="$flags -wd1720"

		if [ $cc_version -lt 110 ]; then
			# warns about system headers with recent glibc:
			# warning #1292: attribute "__nonnull__" ignored
			flags="$flags -wd1292"
		fi

		if [ $cc_version -ge 100 ]; then
			# warning #1899: multicharacter character literal (potential portability problem)
			flags="$flags -wd1899"
			# vec report defaults to telling where it did loop vectorisation, which is not very important
			flags="$flags -vec-report=0 "
		fi

		if [ $cc_version -ge 110 ]; then
			# remark #2259: non-pointer conversion from ... to ... may lose significant bits
			flags="$flags -wd2259"
		fi

		if [ "$enable_lto" != "0" ]; then
			has_ipo=`$1 -help ipo | grep '\-ipo'`
			if [ -n "$has_ipo" ]; then
				# Use IPO (only if we see IPO exists and is requested)
				flags="$flags -ipo"
				features="$features lto"
			fi
		fi
	elif [ `basename $1 | grep 'clang'` ]; then
		# Enable some things only for certain clang versions
		cc_version="`$1 -v 2>&1 | head -n 1 | sed s@[^0-9]@@g | cut -c 1-2`"

		# aliasing rules are not held in OpenDUNE code
		flags="$flags -fno-strict-aliasing"

		# -W alone doesn't enable all warnings enabled by -Wall; on the other hand,
		# -Weverything enables too many useless warnings that can't be disabled (as of 3.0)
		flags="$flags -Wall -W"

		# warning: expression result unused
		flags="$flags -Wno-unused-value"

		# warning: explicitly assigning a variable of type '...' to itself
		# it happens when using the FOR_ALL_WINDOWS_FROM_BACK_FROM macro
		flags="$flags -Wno-self-assign"

		if [ "$cc_version" -lt "30" ]; then
			# warning: equality comparison with extraneous parentheses
			flags="$flags -Wno-parentheses"
			# warning: operands of ? are integers of different signs: 'unsigned int' and 'int'
			flags="$flags -Wno-sign-compare"
		fi

		if [ "$cc_version" -ge "30" ]; then
			# warning: equality comparison with extraneous parentheses
			# this warning could be useful, but it warns about code in squirrel
			flags="$flags -Wno-parentheses-equality"
		fi

		if [ "$with_ccache" != "0" -o "$with_distcc" != "0" ]; then
			# ccache and distcc run separate preprocess and compile passes,
			# both are fed with the same CFLAGS. Unfortunately, clang
			# complains about -I when compiling preprocessed files:
			# "clang: warning: argument unused during compilation: '-I /usr/include'"
			flags="$flags -Qunused-arguments"
		fi

		if [ "$enable_assert" -eq "0" ]; then
			# do not warn about unused variables when building without asserts
			flags="$flags -Wno-unused-variable"
		fi

		# rdynamic is used to get useful stack traces from crash reports.
		ldflags="$ldflags -rdynamic"
	else
		# Enable some things only for certain GCC versions
		cc_version=`$1 -dumpversion | cut -d. -f 1-2`
		if echo "$cc_version" | grep -q '\.' ; then
		    # remove the dot
		    cc_version=`echo "$cc_version" | sed s@\\\.@@g`
		else
			# add a 0 if the version had only one digit
			cc_version="${cc_version}0"
		fi

		if [ "$os" != "TOS" ] && [ "$os" != "DOS" ] && [ $cc_version -lt 70 ] ; then
			if [ "$with_asound" = "0" ] ; then
				flags="$flags -ansi"
			fi
			flags="$flags -pedantic"
		fi
		flags="$flags -fno-common"
		flags="$flags -Wall -Wsign-compare -Wundef"
		flags="$flags -Wwrite-strings -Wpointer-arith"
		flags="$flags -W -Wredundant-decls"
		flags="$flags -Wformat=2 -Wformat-security"
		flags="$flags -Wno-format-nonliteral"

		if [ $enable_assert -eq 0 ]; then
			# Do not warn about unused variables when building without asserts
			if [ $cc_version -ge 30 ]; then
				flags="$flags -Wno-unused-variable"
			fi
			if [ $cc_version -ge 46 ]; then
				# GCC 4.6 gives more warnings, disable them too
				flags="$flags -Wno-unused-but-set-variable"
				flags="$flags -Wno-unused-but-set-parameter"
			fi
		fi

		if [ $cc_version -ge 34 ]; then
			# Warn when a variable is used to initialise itself:
			# int a = a;
			flags="$flags -Winit-self"
		fi

		if [ $cc_version -ge 40 ]; then
			# GCC 4.0+ complains about that we break strict-aliasing.
			#  On most places we don't see how to fix it, and it doesn't
			#  break anything. So disable strict-aliasing to make the
			#  compiler all happy.
			flags="$flags -fno-strict-aliasing"
			# Warn about casting-out 'const' with regular C-style cast.
			#  The preferred way is const_cast<>() which doesn't warn.
			flags="$flags -Wcast-qual"
		fi

		if [ $cc_version -ge 42 ]; then
			# GCC 4.2+ automatically assumes that signed overflows do
			# not occur in signed arithmetics, whereas we are not
			# sure that they will not happen. It furthermore complains
			# about its own optimized code in some places.
			flags="$flags -fno-strict-overflow"
		fi

		if [ $cc_version -eq 45 ]; then
			# Prevent optimisation supposing enums are in a range specified by the standard
			# For details, see http://gcc.gnu.org/PR43680
			flags="$flags -fno-tree-vrp"
		fi

		if [ $cc_version -ge 47 ]; then
			# Disable bogus 'attempt to free a non-heap object' warning
			flags="$flags -Wno-free-nonheap-object"
		fi

		if [ "$enable_lto" != "0" ]; then
			# GCC 4.5 outputs '%{flto}', GCC 4.6 outputs '%{flto*}'
			has_lto=`$1 -dumpspecs | grep '\%{flto'`
			if [ -n "$has_lto" ]; then
				# Use LTO only if we see LTO exists and is requested
				if [ $cc_version -lt 46 ]; then
					flags="$flags -flto"
				else
					flags="$flags -flto=jobserver"
				fi
				ldflags="$ldflags -fwhole-program"
				features="$features lto"
			fi
		fi

		has_rdynamic=`$1 -dumpspecs | grep rdynamic`
		if [ -n "$has_rdynamic" ]; then
			# rdynamic is used to get useful stack traces from crash reports.
			flags="$flags -rdynamic"
			ldflags="$ldflags -rdynamic"
		fi
	fi

	eval "$2=\"$flags\""
	eval "$3=\"$ldflags\""
	eval "$4=\"$features\""
}

make_cflags_and_ldflags() {
	# General CFlags for BUILD
	CFLAGS_BUILD="$CFLAGS_BUILD"
	# LDFLAGS for BUILD
	LDFLAGS_BUILD="$LDFLAGS_BUILD"
	# FEATURES for BUILD (lto)
	FEATURES_BUILD=""
	# General CFlags for HOST
	CFLAGS="$CFLAGS"
	# Libs to compile. In fact this is just LDFLAGS
	LIBS=""
	# LDFLAGS used for HOST
	LDFLAGS="$LDFLAGS"
	# FEATURES for HOST (lto)
	FEATURES=""

	make_compiler_cflags "$cc_build" "CFLAGS_BUILD" "LDFLAGS_BUILD" "FEATURES_BUILD"
	make_compiler_cflags "$cc_host" "CFLAGS" "LDFLAGS" "FEATURES"

	CFLAGS="$CFLAGS -D$os -I$ROOT_DIR/include"

	if [ "$enable_debug" = "0" ]; then
		# No debug, add default stuff
		OBJS_SUBDIR="release"
		if [ "$os" = "MORPHOS" ]; then
			CFLAGS="-I/gg/os-include -noixemul -fstrict-aliasing -fexpensive-optimizations -mcpu=604 -fno-inline -mstring -mmultiple $CFLAGS"
			LDFLAGS="$LDFLAGS -noixemul"
		fi

		if [ "$os" = "TOS" ] ; then
			CFLAGS="-Ofast -fomit-frame-pointer $CFLAGS"
		elif [ "$os" = "HAIKU" -a $cc_version -lt 40 ] ; then
			CFLAGS="-O2 -fomit-frame-pointer $CFLAGS"
		else
			CFLAGS="-O2 -fomit-frame-pointer -Wno-variadic-macros $CFLAGS"
		fi
	else
		OBJS_SUBDIR="debug"

		# Each debug level reduces the optimization by a bit
		if [ $enable_debug -ge 1 ]; then
			CFLAGS="$CFLAGS -g -D_DEBUG"
		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 [ $enable_debug -le 2 ]; then
		if basename "$cc_host" | grep "gcc" &>/dev/null; then
			# Define only when compiling with GCC. Some GLIBC versions use GNU
			# extensions in a way that breaks build with at least ICC.
			# This requires -O1 or more, so debug level 3 (-O0) is excluded.
			osversion=`uname -r | cut -f 1 -d'.'`
			if [ "$os" != "OSX" ] || [ "$os" = "OSX" -a "$osversion" -ne 9 ] ; then
				# FORTIFY_SOURCE causes problem with OS X 10.5 / Xcode 3.1.4
				# OS X 10.5.xx is Darwin 9.xx
				CFLAGS="$CFLAGS"
			fi

			# Just add -O1 to the tools needed for building.
			CFLAGS_BUILD="$CFLAGS_BUILD -O1"
		fi
	fi

	if [ "$os" = "OSX" ] && [ $cc_version -eq 40 ]; then
		# Apple's GCC 4.0 has a compiler bug for x86_64 with (higher) optimization,
		# wrongly optimizing ^= in loops. This disables the failing optimisation.
		CFLAGS="$CFLAGS -fno-expensive-optimizations"
	fi

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

	if [ "`echo $1 | cut -c 1-3`" != "icc" ]; then
		if [ "$os" = "CYGWIN" ]; then
			flags="$flags -mwin32"
			LDFLAGS="$LDFLAGS -mwin32"
		fi
		if [ "$os" = "MINGW" ] || [ "$os" = "CYGWIN" ]; then
			if [ $cc_version -lt 46 ]; then
				flags="$flags -mno-cygwin"
				LDFLAGS="$LDFLAGS -mno-cygwin"
			fi

			LDFLAGS="$LDFLAGS -Wl,--subsystem,windows"

			LIBS="$LIBS -lwinmm -lcomctl32 -lgdi32"

			if [ $cc_version -ge 44 ]; then
				LDFLAGS_BUILD="$LDFLAGS_BUILD -static-libgcc"
			fi
			if [ $cc_version -ge 47 ]; then
				CFLAGS="$CFLAGS -mno-ms-bitfields"
			fi
		fi
	fi

	if [ "$os" = "WINCE" ]; then
		LIBS="$LIBS -lcoredll -lcorelibc -laygshell -lws2 -e WinMainCRTStartup"
	fi

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

	if [ "$os" = "OSX" ]; then
		# Add macports include dir which is not always set a default system dir. This avoids zillions of bogus warnings.
		CFLAGS="$CFLAGS -isystem/opt/local/include"

		# Add OS X SDK audio frameworks
		LDFLAGS="-Wl,-framework,AudioToolbox -Wl,-framework,AudioUnit $LDFLAGS"
		LDFLAGS="-Wl,-framework,CoreFoundation $LDFLAGS"

		if [ -z "$sdl2_config" ] && [ -z "$sdl_config" ] ; then
			LDFLAGS="$LDFLAGS -Wl,-framework,ApplicationServices"
			LDFLAGS="$LDFLAGS -Wl,-framework,Carbon"
			LDFLAGS="$LDFLAGS -Wl,-framework,CoreAudio"
		fi

		if [ "$enable_universal" = "0" ]; then
			# Universal builds set this elsewhere
			CFLAGS="$OSX_SYSROOT $CFLAGS"
			LDFLAGS="$OSX_LD_SYSROOT $LDFLAGS"
		fi

		if [ "$enable_universal" = "0" ] && [ $cc_version -ge 40 ]; then
			# Only set the min version when not doing an universal build.
			# Universal builds set the version elsewhere.
			if [ "$cpu_type" = "64" ]; then
				if [ -n "$sdl2_config" ]; then
					CFLAGS="$CFLAGS -mmacosx-version-min=10.7"
				else
					CFLAGS="$CFLAGS -mmacosx-version-min=10.5"
				fi
			else
				gcc_cpu=`$cc_host -dumpmachine`
				if [ "`echo $gcc_cpu | cut -c 1-3`" = "ppc" -o "`echo $gcc_cpu | cut -c 1-7`" = "powerpc" ]; then
					# PowerPC build can run on 10.3
					CFLAGS="$CFLAGS -mmacosx-version-min=10.3"
				else
					# Intel is only available starting from 10.4
					CFLAGS="$CFLAGS -mmacosx-version-min=10.4"
				fi
				machine=$(machine)
				case $machine in
					ppc7400 | ppc7450 | ppc970)
					CFLAGS="$CFLAGS -maltivec" ;;
				esac
			fi
		fi
	fi

	if [ "$os" = "OS2" ]; then
		LDFLAGS_BUILD="$LDFLAGS_BUILD -lstdc++"
	fi

	if [ "$os" = "BEOS" ] || [ "$os" = "HAIKU" ]; then
		LIBS="$LIBS -lmidi -lbe"
		if [ $cc_version -lt 30 ]; then
			LIBS="$LIBS -lstdc++.r4"
		else
			LIBS="$LIBS -lstdc++"
		fi
	fi

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

	if [ "$os" = "TOS" ]; then
		log 1 "targeting m68k CPU... $cpu"
		CFLAGS="-m$cpu -msoft-float $CFLAGS"
		LDFLAGS="$LDFLAGS -Wl,--traditional-format"
		as_host="vasmm68k_mot"
		asflags="-m$cpu -Faout -quiet"
	fi

	if [ -n "$sdl_config" ]; then
		CFLAGS="$CFLAGS -DWITH_SDL"
		# SDL must not add _GNU_SOURCE as it breaks many platforms
		CFLAGS="$CFLAGS `$sdl_config --cflags | sed 's@-D_GNU_SOURCE[^ ]*@@'`"
		if [ "$enable_static" != "0" ]; then
			if [ "$os" = "OSX" ] ; then
				libpath=`$sdl_config --static-libs | cut -d ' ' -f 1 | cut -c 3- `
				LIBS="$LIBS `$sdl_config --static-libs | sed 's@ -l\([^ ]*\)@ '${libpath}'/lib\1.a@g' `"
			else
				LIBS="$LIBS `$sdl_config --static-libs`"
			fi
			if [ $with_sdlimage -gt 0 ]; then
				if [ "$os" = "OSX" ] ; then
					LIBS="$LIBS $(pkg-config SDL_image --libs-only-L | cut -c 3- | tr -d ' ')/libSDL_image.a"
				else
					LIBS="$LIBS -lSDL_image"
				fi
			fi
		else
			LIBS="$LIBS `$sdl_config --libs`"
			if [ $with_sdlimage -gt 0 ]; then
				LIBS="$LIBS -lSDL_image"
			fi
		fi
		if [ $with_sdlimage -eq 0 ]; then
			CFLAGS="$CFLAGS -DWITHOUT_SDLIMAGE"
		fi
	fi

	if [ -n "$sdl2_config" ]; then
		CFLAGS="$CFLAGS -DWITH_SDL2"
		# SDL2 must not add _GNU_SOURCE as it breaks many platforms
		CFLAGS="$CFLAGS `$sdl2_config --cflags | sed 's@-D_GNU_SOURCE[^ ]*@@'` -DSDL_FORCE_INLINE='static __inline'"
		if [ "$enable_static" != "0" ]; then
			if [ "$os" = "OSX" ] ; then
				libpath=`$sdl2_config --static-libs | cut -d ' ' -f 1 | cut -b 3- `
				LIBS="$LIBS `$sdl2_config --static-libs | cut -d ' ' -f 2- | sed 's@-l\([^ ]*\)@'${libpath}'/lib\1.a@' `"
			else
				LIBS="$LIBS `$sdl2_config --static-libs`"
			fi
			if [ $with_sdl2image -gt 0 ]; then
				if [ "$os" = "OSX" ] ; then
					LIBS="$LIBS $(pkg-config SDL2_image --libs-only-L | cut -c 3- | tr -d ' ')/libSDL2_image.a"
				else
					LIBS="$LIBS -lSDL2_image"
				fi
			fi
		else
			LIBS="$LIBS `$sdl2_config --libs`"
			if [ $with_sdl2image -gt 0 ]; then
				LIBS="$LIBS -lSDL2_image"
			fi
		fi
		if [ $with_sdl2image -eq 0 ]; then
			CFLAGS="$CFLAGS -DWITHOUT_SDLIMAGE"
		fi
	fi

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

	if [ "$with_asound" != "0" ]; then
		if [ "$enable_static" != "0" ] && [ "$os" != "OSX" ]; then
			LIBS="$LIBS $asound"
		else
			LIBS="$LIBS -lasound"
		fi
		CFLAGS="$CFLAGS -DALSA"
                if [ "$os" = "FREEBSD" ]; then
                        CFLAGS="$CFLAGS -Dinline=__inline__"
                fi
	fi

	if [ "$with_pulse" != "0" ]; then
		LIBS="$LIBS $(pkg-config --libs-only-l libpulse)"
		CFLAGS="$CFLAGS $(pkg-config --cflags libpulse) -DPULSEAUDIO"
		if [ "$os" = "FREEBSD" ] || [ "$os" = "OPENBSD" ] || [ "$os" = "NETBSD" ]; then
			LIBS="$LIBS -lintl"
		fi
	fi

	if [ "$with_kai" != "0" ]; then
		LIBS="$LIBS -lkai"
		CFLAGS="$CFLAGS -DKAI"
	fi

	if [ "$with_munt" != "0" ]; then
		LIBS="$LIBS -lmt32emu -lm -lstdc++"
		CFLAGS="$CFLAGS -DMUNT"
	fi

	if [ "$with_fluid" != "0" ]; then
		LIBS="$LIBS -lfluidsynth"
		CFLAGS="$CFLAGS -DFLUID"
		if [ "$os" = "OS2" ]; then
			LIBS="$LIBS -lkai"
		fi
	fi

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

	if [ "$enable_lto" != "0" ]; then
		lto_build=`echo "$FEATURES_BUILD" | grep "lto"`
		lto_host=`echo "$FEATURES" | grep "lto"`
		if [ -z "$lto_build$lto_host" ]; then
			log 1 "WARNING: you enabled LTO/IPO, but neither build nor host compiler supports it"
			log 1 "WARNING: LTO/IPO has been disabled"
		fi
		if [ -n "$lto_build" ]; then
			LDFLAGS_BUILD="$LDFLAGS_BUILD $CFLAGS_BUILD"
		fi
		if [ -n "$lto_host" ]; then
			LDFLAGS="$LDFLAGS $CFLAGS"
		fi
	fi

	log 1 "using CFLAGS_BUILD... $CFLAGS_BUILD"
	log 1 "using LDFLAGS_BUILD... $LDFLAGS_BUILD"
	log 1 "using CFLAGS... $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.
	# Also make makedepend aware of compiler's built-in defines.
	if [ "$with_makedepend" != "0" ] || [ "$enable_builtin_depend" != "0" ]; then
		# Please escape ALL " within ` because e.g. "" terminates the string in some sh implementations
		cflags_makedep="$cflags_makedep `echo \"$CFLAGS\" | sed 's@ /@ -@g;s@-I[ ]*[^ ]*@@g'`"
	else
		makedepend=""
	fi

	if [ "$with_distcc" != "0" ]; then
		cc_host="$distcc $cc_host"
		log 1 ""
		log 1 " NOTICE: remind yourself to use 'make -jN' to make use of distcc"
		log 1 ""
	fi

	if [ "$with_ccache" != "0" ]; then
		cc_host="$ccache $cc_host"
	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 environment to a $6 binary"
				exit 1
			fi
		else
			log 2 "checking $1... CC 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 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() {
           #	if [ "$os" = "FREEBSD" ]; then
           #	# FreeBSD's C compiler does not support dump machine.
           #	check_compiler "build system type" "cc_build" "$build" "$cc_build" "$CXX" "g++" "c++" "0" "-dumpmachine"
	if [ "$os" = "HAIKU" ]; then
		check_compiler "build system type" "cc_build" "$build" "$cc_build" "$CXX" "g++" "c++" "0" "-dumpmachine"
	else
		check_compiler "build system type" "cc_build" "$build" "$cc_build" "$CC" "gcc" "cc" "0" "-dumpmachine"
	fi
}

check_host() {
	# By default the host is the build
	if [ -z "$host" ]; then host="$build"; fi

           #	if [ "$os" = "FREEBSD" ]; then
           #		# FreeBSD's C compiler does not support dump machine.
           #		check_compiler "host system type" "cc_host" "$host" "$cc_host" "$CXX" "g++" "c++" "0" "-dumpmachine"
           #	else
		check_compiler "host system type" "cc_host" "$host" "$cc_host" "$CC" "gcc" "cc" "0" "-dumpmachine"
                #	fi
}

check_strip() {
	if [ "$os" = "OS2" ]; then
		# OS2 via gcc is a bit weird.. stripping HAS to be done via emxbind, which is via gcc directly
		log 1 "checking host strip... using gcc -s option"
	elif [ "$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_osx_sdk() {
	local sysroot=""
	if [ -n "$1" ]; then
		if echo "$1" | grep -q / ; then
			# Seems to be a file system path
			osx_sdk_path="$1"
		else
			osx_sdk_path="/Developer/SDKs/MacOSX$1.sdk"
		fi
		if [ ! -d "$osx_sdk_path" ]; then
			# No directory, not present or garbage
			return 1
		fi

		# Set minimum version to 10.4 as that's when kCGBitmapByteOrder32Host was introduced
		sysroot="-isysroot $osx_sdk_path -Wl,-syslibroot,$osx_sdk_path -mmacosx-version-min=10.4"
	fi

cat > tmp.osx.c << EOF
int main() {
	return 0;
}
EOF
	execute="$cc_host $sysroot $CFLAGS tmp.osx.c -framework Cocoa -o tmp.osx 2>&1"
	eval $execute > /dev/null
	ret=$?
	log 2 "executing $execute"
	log 2 "  exit code $ret"
	rm -f tmp.osx.c tmp.osx
	return $ret
}

check_makedepend() {
	if [ "$enable_builtin_depend" != "0" ]; then
		with_makedepend="0"
	fi

	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"
}

check_version() {
	# $1 - requested version (major.minor)
	# $2 - version we got (major.minor)

	if [ -z "$2" ]; then
		return 0
	fi

	req_major=`echo $1 | cut -d. -f1`
	got_major=`echo $2 | cut -d. -f1`
	if [ $got_major -lt $req_major ]; then
		return 0
	elif [ $got_major -gt $req_major ]; then
		return 1
	fi

	req_minor=`echo $1 | cut -d. -f2`
	got_minor=`echo $2 | cut -d. -f2`
	if [ $got_minor -lt $req_minor ]; then
		return 0
	fi
	return 1
}

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, OPENBSD, NETBSD, HPUX, MORPHOS, BEOS, SUNOS, CYGWIN, MINGW, OS2, DOS, and WINCE

		# 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}
					/openbsd/      { print "OPENBSD"; exit}
					/netbsd/       { print "NETBSD";  exit}
					/hp-ux/        { print "HPUX";    exit}
					/morphos/      { print "MORPHOS"; exit}
					/beos/         { print "BEOS";    exit}
					/haiku/        { print "HAIKU";   exit}
					/sunos/        { print "SUNOS";   exit}
					/solaris/      { print "SUNOS";   exit}
					/cygwin/       { print "CYGWIN";  exit}
					/mingw/        { print "MINGW";   exit}
					/os2/          { print "OS2";     exit}
					/dos/          { print "DOS";     exit}
					/wince/        { print "WINCE";   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}
					/openbsd/      { print "OPENBSD"; exit}
					/netbsd/       { print "NETBSD";  exit}
					/hp-ux/        { print "HPUX";    exit}
					/morphos/      { print "MORPHOS"; exit}
					/beos/         { print "BEOS";    exit}
					/haiku/        { print "HAIKU";   exit}
					/sunos/        { print "SUNOS";   exit}
					/cygwin/       { print "CYGWIN";  exit}
					/mingw/        { print "MINGW";   exit}
					/os\/2/        { print "OS2";     exit}
					/gnu/          { print "UNIX";    exit}
			'`
		fi

		if [ -z "$os" ]; then
			log 1 "detecting OS... none detected"
			log 1 "I couldn't detect your OS. Please use --os=OS to force one"
			log 1 "Allowed values are: UNIX, OSX, FREEBSD, OPENBSD, NETBSD, MORPHOS, HPUX, BEOS, HAIKU, SUNOS, CYGWIN, MINGW, OS2, DOS, and WINCE"
			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 [ "$with_sdl" = "1" ] || [ "$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 version $version"

	if version=`pkg-config SDL_image --modversion 2>/dev/null`; then
		log 1 "checking SDL_image... found version $version"
		with_sdlimage="1"
	else
		log 1 "checking SDL_image... not found"
		with_sdlimage="0"
	fi
}

detect_sdl2() {
	# 0 means no, 1 is auto-detect, 2 is force
	if [ "$with_sdl2" = "0" ]; then
		log 1 "checking SDL2... disabled"

		sdl2_config=""
		return 0
	fi

	if [ "$with_sdl2" = "1" ] || [ "$with_sdl2" = "" ] || [ "$with_sdl2" = "2" ]; then
		sdl2_config="sdl2-config"
	else
		sdl2_config="$with_sdl2"
	fi

	version=`$sdl2_config --version 2>/dev/null`
	ret=$?
	log 2 "executing $sdl2_config --version"
	log 2 "  returned $version"
	log 2 "  exit code $ret"

	if [ -z "$version" ] || [ "$ret" != "0" ]; then
		log 1 "checking SDL2... not found"

		# It was forced, so it should be found.
		if [ "$with_sdl2" != "1" ]; then
			log 1 "configure: error: sdl2-config couldn't be found"
			log 1 "configure: error: you supplied '$with_sdl2', but it seems invalid"
			exit 1
		fi

		sdl2_config=""
		return 0
	fi

	log 1 "checking SDL2... found version $version"
	# SDL2 found, disabling SDL
	if [ "$with_sdl" = "1" ] ; then
		with_sdl="0"
	fi

	if version=`pkg-config SDL2_image --modversion 2>/dev/null`; then
		log 1 "checking SDL2_image... found version $version"
		with_sdl2image="1"
	else
		log 1 "checking SDL2_image... not found"
		with_sdl2image="0"
	fi
}

detect_osx_sdk() {
	# Try to find the best SDK available. For a normal build this
	# is currently the 10.5 SDK as this is needed to compile all
	# optional code. Because such an executable won't run on 10.4
	# or lower, also check for the 10.4u SDK when doing an universal
	# build.

	# Check for the 10.5 SDK, but try 10.6 if that fails
	check_osx_sdk "10.5" ||	check_osx_sdk "10.6" || osx_sdk_path=""

	if [ -z "$osx_sdk_path" ] || [ "$enable_universal" != "0" ]; then
		# No better SDK or universal build enabled? Check 10.4u SDK as well
		local old_sdk="$osx_sdk_path"
		if check_osx_sdk "10.4u"; then
			osx_sdk_104_path="$osx_sdk_path"
		else
			osx_sdk_104_path=""
		fi
		if [ -z "$old_sdk" ]; then
			osx_sdk_path="$osx_sdk_104_path"
		else
			osx_sdk_path="$old_sdk"
		fi
	fi

	if [ -z "$osx_sdk_path" ]; then
		log 1 "Your system SDK is probably too old"
		log 1 "Please install/upgrade your Xcode to >= 2.5"

		exit 1
	fi
}

detect_library() {
	# $1 - config-param ($with_zlib value)
	# $2 - library name ('zlib', sets $zlib)
	# $3 - static library name (libz.a)
	# $4 - header directory ()
	# $5 - header name (zlib.h)
	# $6 - force static (if non-empty)

	if [ -n "$6" ]; then force_static="1"; fi

	# 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/$4*.h 2>/dev/null | grep -E -- \"\/$5\$\"`"
		eval "res=\$$2"
		if [ -z "$res" ]; then
			log 2 "  trying /usr/include/$4$5... no"
			eval "$2=`ls -1 /usr/local/include/$4*.h 2>/dev/null | grep -E -- \"\/$5\$\"`"
		fi
		eval "res=\$$2"
		if [ -z "$res" ]; then
			log 2 "  trying /usr/local/include/$4$5... no"
			eval "$2=`ls -1 /mingw/include/$4*.h 2>/dev/null | grep -E -- \"\/$5\$\"`"
		fi
		eval "res=\$$2"
		if [ -z "$res" ]; then
			log 2 "  trying /mingw/include/$4$5... no"
			eval "$2=`ls -1 /opt/local/include/$4*.h 2>/dev/null | grep -E -- \"\/$5\$\"`"
		fi
		eval "res=\$$2"
		if [ -z "$res" ]; then
			log 2 "  trying /opt/local/include/$4$5... no"
		fi
		if [ -z "$res" ] && [ "$os" = "NETBSD" ]; then
			eval "$2=`ls -1 /usr/pkg/include/$4*.h 2>/dev/null | grep -E -- \"\/$5\$\"`"
			eval "res=\$$2"
			if [ -z "$res" ]; then
				log 2 "  trying /usr/pkg/include/$4$5... no"
			fi
		fi
		if [ -z "$res" ] && [ "$os" = "HAIKU" ]; then
			eval "$2=`ls -1 /boot/common/include/$4*.h 2>/dev/null | grep -E -- \"\/$5\$\"`"
			eval "res=\$$2"
			if [ -z "$res" ]; then
				log 2 "  trying /boot/common/include/$4$5... no"
			fi
		fi

		eval "res=\$$2"
		if [ -n "$res" ] && ( [ -n "$force_static" ] || ( [ "$enable_static" != "0" ] && [ "$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 -E -- \"\/$3\$\"`"
			eval "res=\$$2"
			if [ -z "$res" ]; then
				log 2 "  trying /lib/$3... no"
				eval "$2=`ls /usr/lib/*.a 2>/dev/null | grep -E -- \"\/$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 -E -- \"\/$3\$\"`"
			fi
			eval "res=\$$2"
			if [ -z "$res" ]; then
				log 2 "  trying /usr/local/lib/$3... no"
				eval "$2=`ls /mingw/lib/*.a 2>/dev/null | grep -E -- \"\/$3\$\"`"
			fi
			eval "res=\$$2"
			if [ -z "$res" ]; then
				log 2 "  trying /mingw/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

		eval "with_$2=0"

		return 0
	fi

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

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

detect_asound() {
	detect_library "$with_asound" "asound" "libasound.a" "alsa/" "asoundlib.h"
}

detect_oss() {
	detect_library "$with_oss" "oss" "" "sys/" "soundcard.h"
}

detect_pulseaudio() {
	detect_library "$with_pulse" "pulse" "libpulse.a" "pulse/" "pulseaudio.h"
}

detect_kai() {
	detect_library "$with_kai" "kai" "" "" "kai.h"
}

detect_munt() {
	if [ "$os" = "OS2" ]; then
		MT32EMU_LIB=mt32emu.a
	else
		MT32EMU_LIB=libmt32emu.a
	fi
	detect_library "$with_munt" "munt" "$MT32EMU_LIB" "mt32emu/" "mt32emu.h"
}

_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
}

detect_cputype() {
	if [ -n "$cpu_type" ] && [ "$cpu_type" != "DETECT" ]; then
		log 1 "forcing cpu-type... $cpu_type bits"
		return;
	fi
	echo "#include <stdio.h>" >> tmp.64bit.c
	echo "#include \"types.h\"" >> tmp.64bit.c
	echo "assert_compile(sizeof(size_t) == 8);" >> tmp.64bit.c
	echo "int main() { return 0; }" >> tmp.64bit.c
	execute="$cc_host -Iinclude/ $CFLAGS tmp.64bit.c -o tmp.64bit -DTESTING 2>&1"
	cpu_type="`eval $execute 2>/dev/null`"
	ret=$?
	log 2 "executing $execute"
	log 2 "  returned $cpu_type"
	log 2 "  exit code $ret"
	if [ "$ret" = "0" ]; then cpu_type="64"; else cpu_type="32"; fi
	log 1 "detecting cpu-type... $cpu_type bits"
	rm -f tmp.64bit tmp.64bit.c
}

make_sed() {
	T_CFLAGS="$CFLAGS"
	T_LDFLAGS="$LDFLAGS"

	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!!@$cc_host@g;
		s@!!CC_BUILD!!@$cc_build@g;
		s@!!AS_HOST!!@$as_host@g;
		s@!!STRIP!!@$strip $strip_arg@g;
		s@!!LIPO!!@$lipo@g;
		s@!!CFLAGS!!@$T_CFLAGS@g;
		s@!!CFLAGS_BUILD!!@$CFLAGS_BUILD@g;
		s@!!ASFLAGS!!@$asflags@g;
		s@!!LIBS!!@$LIBS@g;
		s@!!LDFLAGS!!@$T_LDFLAGS@g;
		s@!!LDFLAGS_BUILD!!@$LDFLAGS_BUILD@g;
		s@!!BIN_DIR!!@$BIN_DIR@g;
		s@!!ROOT_DIR!!@$ROOT_DIR@g;
		s@!!SOURCE_LIST!!@$SOURCE_LIST@g;
		s@!!SRC_OBJS_DIR!!@$SRC_OBJS_DIR@g;
		s@!!SRC_DIR!!@$SRC_DIR@g;
		s@!!OSXAPP!!@$OSXAPP@g;
		s@!!OPENDUNE!!@$OPENDUNE@g;
		s@!!BINARY_DIR!!@$prefix_dir/$binary_dir@g;
		s@!!DOC_DIR!!@$prefix_dir/$doc_dir@g;
		s@!!DATA_DIR!!@$prefix_dir/$data_dir@g;
		s@!!ICON_DIR!!@$prefix_dir/$icon_dir@g;
		s@!!INSTALL_DIR!!@$install_dir@g;
		s@!!BINARY_NAME!!@$binary_name@g;
		s@!!DEPEND!!@$DEPEND@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_SOURCE!!@config.cache.source@g;
		s@!!CONFIG_CACHE_VERSION!!@config.cache.version@g;
		s@!!CONFIG_CACHE_SOURCE_LIST!!@config.cache.source.list@g;
		s@!!CONFIG_CACHE_PWD!!@config.cache.pwd@g;
		s@!!OBJS_CXX!!@$OBJS_CXX@g;
		s@!!OBJS_C!!@$OBJS_C@g;
		s@!!OBJS_S!!@$OBJS_S@g;
		s@!!SRCS!!@$SRCS@g;
		s@!!OS!!@$os@g;
		s@!!CONFIGURE_FILES!!@$CONFIGURE_FILES@g;
		s@!!AWK!!@$awk@g;
		s@!!DISTCC!!@$distcc@g;
	"

	if [ "$icon_theme_dir" != "" ]; then
		SRC_REPLACE="$SRC_REPLACE
			s@!!ICON_THEME_DIR!!@$prefix_dir/$icon_theme_dir@g;
		"
	else
		SRC_REPLACE="$SRC_REPLACE
			s@!!ICON_THEME_DIR!!@@g;
		"
	fi

	if [ "$man_dir" != "" ]; then
		SRC_REPLACE="$SRC_REPLACE
			s@!!MAN_DIR!!@$prefix_dir/$man_dir@g;
		"
	else
		SRC_REPLACE="$SRC_REPLACE
			s@!!MAN_DIR!!@@g;
		"
	fi

	if [ "$menu_dir" != "" ]; then
		SRC_REPLACE="$SRC_REPLACE
			s@!!MENU_DIR!!@$prefix_dir/$menu_dir@g;
		"
	else
		SRC_REPLACE="$SRC_REPLACE
			s@!!MENU_DIR!!@@g;
		"
	fi
}

generate_main() {
	STAGE="[MAIN]"

	make_sed

	# Create the main Makefile
	log 1 "Generating Makefile..."
	echo "# Auto-generated file from 'Makefile.in' -- DO NOT EDIT" > Makefile
	< $ROOT_DIR/Makefile.in sed "$SRC_REPLACE" >> Makefile
	cp $ROOT_DIR/Makefile.bundle.in Makefile.bundle
	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
	# Add the current directory, so we don't trigger an unwanted recompile
	echo "`pwd`" > config.cache.pwd
	# Make sure config.cache is OLDER then config.cache.source.list
	touch config.cache
	touch config.pwd
}

generate_src_normal() {
	STAGE=$1

	make_sed

	# Create the source file
	mkdir -p $SRC_OBJS_DIR

	log 1 "Generating $2/Makefile..."
	echo "# Auto-generated file from 'Makefile.src.in' -- DO NOT EDIT" > $SRC_OBJS_DIR/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="$cc_host"
	CFLAGS_orig="$CFLAGS"
	LDFLAGS_orig="$LDFLAGS"

	for type in $enable_universal; do

		if [ -n "$osx_sdk_104_path" ]; then
			# Use 10.4 SDK for 32-bit targets
			CFLAGS="-isysroot $osx_sdk_104_path $CFLAGS_orig"
			LDFLAGS="-Wl,-syslibroot,$osx_sdk_104_path $LDFLAGS_orig"
		fi

		# We don't want to duplicate the x86_64 stuff for each target, so do it once here
		if [ "$type" = "ppc64" ] || [ "$type" = "x86_64" ]; then
			# 64 bits is always 10.5 or higher. Furthermore it has a non const ICONV
			# and they also removed support for QuickTime/QuickDraw
			if [ -n "$osx_sdk_path" ]; then
				CFLAGS="-isysroot $osx_sdk_path $CFLAGS_orig"
				LDFLAGS="-Wl,-syslibroot,$osx_sdk_path $LDFLAGS_orig"
			fi
		fi

		case $type in
			ppc)
				BASE_SRC_OBJS_DIR="$OBJS_DIR/ppc"
				cc_host="$cc_host_orig -arch ppc -mmacosx-version-min=10.3"
				generate_src_normal "[ppc]" "objs/ppc";;
			ppc970)
				BASE_SRC_OBJS_DIR="$OBJS_DIR/ppc970"
				cc_host="$cc_host_orig -arch ppc970 -mmacosx-version-min=10.3 -mcpu=G5 -mpowerpc64 -mtune=970 -mcpu=970 -mpowerpc-gpopt"
				generate_src_normal "[ppc970]" "objs/ppc970";;
			i386)
				BASE_SRC_OBJS_DIR="$OBJS_DIR/i386"
				cc_host="$cc_host_orig -arch i386 -mmacosx-version-min=10.4"
				generate_src_normal "[i386]" "objs/i386";;
			ppc64)
				BASE_SRC_OBJS_DIR="$OBJS_DIR/ppc64"
				cc_host="$cc_host_orig -arch ppc64 -mmacosx-version-min=10.5"
				generate_src_normal "[ppc64]" "objs/ppc64";;
			x86_64)
				BASE_SRC_OBJS_DIR="$OBJS_DIR/x86_64"
				cc_host="$cc_host_orig -arch x86_64 -mmacosx-version-min=10.5"
				generate_src_normal "[x86_64]" "objs/x86_64";;
			*) log 1 "Unknown architecture requested for universal build: $type";;
		esac
	done
}

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

showhelp() {
	echo "'configure' configures OpenDUNE."
	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 "  --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/OPENBSD/NETBSD/"
	echo "                                 MORPHOS/HPUX/BEOS/SUNOS/CYGWIN/MINGW/OS2/"
	echo "                                 DOS/WINCE/HAIKU/TOS"
	echo "  --cpu=CPU                      the m68k CPU to target (TOS only) [68030]"
	echo "                                 68000/68010/68020/68030/68040/68060"
	echo "                                 use 68000 for a stock ST/STE"
	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 (.PAK files)."
	echo "                                 Will be prefixed with the prefix-dir"
	echo "                                 [share/games/opendune]"
	echo "  --icon-dir=dir                 location of icon files."
	echo "                                 Will be prefixed with the prefix-dir"
	echo "  --install-dir=dir              specifies the root to install to."
	echo "                                 Useful to install into jails [/]"
	echo "  --binary-name                  the name used for the binary, icons,"
	echo "                                 desktop file, etc. when installing [opendune]"
	echo ""
	echo "Features and packages:"
	echo "  --enable-debug[=LVL]           enable debug-mode (LVL=[0123], 0 is release)"
	echo "  --enable-profiling             enables profiling"
	echo "  --enable-lto                   enables GCC's Link Time Optimization (LTO)/ICC's"
	echo "                                 Interprocedural Optimization if available"
	echo "  --enable-static                enable static compile (doesn't work for"
	echo "                                 all HOSTs)"
	echo "  --enable-universal[=ARCH]      enable universal builds (OSX ONLY). Allowed is any combination"
	echo "                                 of architectures: i386 ppc ppc970 ppc64 x86_64"
	echo "                                 Default architectures are: i386 ppc"
	echo "  --disable-assert               disable asserts (continue on errors)"
	echo "  --enable-strip                 enable any possible stripping"
	echo "  --without-osx-sysroot          disable the automatic adding of sysroot "
	echo "                                 (OSX ONLY)"
	echo "  --with-sort=sort               define a non-default location for sort"
	echo "  --with-sdl[=sdl-config]        enables SDL video driver support"
	echo "  --with-sdl2[=sdl2-config]      enables SDL2 video driver support"
	echo "  --with-asound[=libasound.a]    enables ALSA support"
	echo "  --with-oss                     enables Open Sound System"
	echo "  --with-munt                    enables MUNT support"
	echo "  --with-pulse[=libpulse.a]      enables PulseAudio support"
	echo "  --with-kai                     enables KAI support"
	echo "  --with-fluid                   enables FluidSynth support"
	echo "  --disable-builtin-depend       disable use of builtin deps finder"
	echo "  --with-makedepend[=makedepend] enables makedepend support"
	echo "  --with-ccache                  enables ccache support"
	echo "  --with-distcc                  enables distcc support"
	echo ""
	echo "Some influential environment variables:"
	echo "  CC                             C compiler command"
	echo "  CFLAGS                         C compiler flags"
	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."
}