#!/bin/sh
# Mini configure script
# 26-01-2011

echo

MT_V="3.40"
MT_DATE="2011-12-30"

MT_VERSION="mtPaint $MT_V"
MT_LANG=YES
MT_MAN=YES
MT_POD=NO
MT_CPICK=mtpaint
MT_FPICK=mtpaint
MT_ANIM=Gifsicle
ICON_SET=icons1

GTK_FILE=_conf.txt
HELP=1

OS=
MARCH=
OPTS=YES
USE_THREADS=YES
AS_NEEDED=
DEFS=

# Path overrides
MT_BINDIR=
MT_DATAROOT=
MT_DOCDIR=
MT_LOCDIR=
MT_MANDIR=
MT_PO=
MT_HOST=

# Initialize library-tracking vars
STATICLIBS=
for A in PNG GIF JPEG JP2 TIFF FT CMS
do
	eval "N$A="
	eval "STATIC_$A="
	STATICLIBS="$STATICLIBS \$STATIC_$A"
done
GTK=
GTK2VERSION=

# Prevent nasty surprises from locale
unset LC_ALL
export LC_COLLATE=C # LC_CTYPE=C LC_NUMERIC=C

for A in "$@"
do
	case "$A" in
	"staticpng" )	STATIC_PNG=PNG;;
	"GIF" )		NGIF=GIF;;
	"gif" )		NGIF=YES;;
	"nogif" )	NGIF=NO;;
	"staticgif" )	STATIC_GIF=GIF;;
	"jpeg" )	NJPEG=YES;;
	"nojpeg" )	NJPEG=NO;;
	"staticjpeg" )	STATIC_JPEG=JPEG;;
	"jp2" )		NJP2=OpenJPEG;;
	"jasper" )	NJP2=JasPer;;
	"nojp2" )	NJP2=NO;;
	"staticjp2" )	STATIC_JP2=JPEG2000;;
	"tiff" )	NTIFF=YES;;
	"notiff" )	NTIFF=NO;;
	"statictiff" )	STATIC_TIFF=TIFF;;
	"noft" )	NFT=NO;;
	"staticft" )	STATIC_FT=FreeType;;
	"lcms" )	NCMS=LittleCMS;;
	"lcms2" )	NCMS=LittleCMS2;;
	"nolcms" )	NCMS=NO;;
	"staticlcms" )	STATIC_CMS=LittleCMS;;
	"gtk1" )	GTK=1;;
	"gtk2"* )	GTK=2
			# Override minor version of installed GTK+2
			GTK2VERSION="`echo "$A" | sed -e 's/gtk2\.\?\([0-9]*\).*/\1/'`";;
	"intl" )	MT_LANG=YES;;
	"man" )		MT_MAN=YES;;
	"pod" )		MT_POD=YES;;
	"gtkfilesel" )	MT_FPICK=gtkfilesel;;
	"gtkcolsel" )	MT_CPICK=gtkcolsel;;
	"imagick" )	MT_ANIM=ImageMagick;;
	"icons"* )	ICON_SET=$A;;
	"win" )		OS="MinGW/MSYS"
			GTK=2;;
	"cflags" )	OPTS=CFLAGS;;
	"386" )		MARCH='-march=i386';;
	"486" )		MARCH='-march=i486';;
	"586" )		MARCH='-march=i586';;
	"686" )		MARCH='-march=i686';;
	"--cpu="* )	MARCH="-march=${A#*=}";;
	"slow" )	OPTS=NO;;
	"debug" )	OPTS=DEBUG;;
	"release" )	OPTS=RELEASE;;
	"thread" )	USE_THREADS=YES;;
	"nothread" )	USE_THREADS=NO;;
	"asneeded" )	AS_NEEDED=-Wl,--as-needed;;
	"--help" )	HELP=0;;
	"--prefix="* )	MT_PREFIX="${A#*=}";;
	"--bindir="* )	MT_BINDIR="${A#*=}";;
	"--datarootdir="* )	MT_DATAROOT="${A#*=}";;
	"--docdir="* )	MT_DOCDIR="${A#*=}";;
	"--localedir="* )	MT_LOCDIR="${A#*=}";;
	"--mandir="* )	MT_MANDIR="${A#*=}";;
	"--host="* )	MT_HOST="${A#*=}";;
	"--fakeroot="* ) FAKE_ROOT="${A#*=}";;
	"flush" )	echo Clearing out directory to original state
			echo
			make clean
			echo
			rm $GTK_FILE
			rm po/mtpaint.pot
			rm -rf src/graphics
			exit;;
	"merge" )	xgettext src/*.c src/*.h --keyword=_ -o po/mtpaint.pot
			cd po
			NEW_DIR=trans_
			mkdir $NEW_DIR`date +%d-%m-%Y-%H-%M-%S`
			for file in *.po
			do
				echo New file = $file-a
				mv "$file" "$file-a"
				msgmerge -N "$file-a" mtpaint.pot > "$file"
				mv "$file-a" $NEW_DIR*
			done
			rm mtpaint.pot
			mv $NEW_DIR* ../../old_trans
			exit;;
	"newpo" )	xgettext src/*.c src/*.h --keyword=_ -o po/mtpaint.pot
			exit;;
	# Override variable
	[!=]*=* )	MT_VAR=${A%%=*}
			if [ "$MT_VAR" != "${MT_VAR#*[!A-Za-z0-9_]}" ]
			then
				echo "Invalid variable: '$MT_VAR'"
			else
				eval $MT_VAR=\${A#*=}
				export $MT_VAR
			fi;;
	esac
done

if [ "$HELP" = 0 ]
then

cat << 'EOF' ; exit
Usage: ./configure [OPTION] ... [VAR=VALUE] ...

Options:

win .............. Configure for Windows MinGW / MSYS
gtk1 ............. Configure for GTK+1
gtk2 ............. Configure for GTK+2
gtk2.VER ......... Configure for GTK+2, minor version VER
gtkfilesel ....... Use GtkFileSelection file picker
gtkcolsel ........ Use GtkColorSelection colour picker
imagick .......... Use ImageMagick for GIF animation tasks

thread ........... Use multithreading
nothread ......... Don't use multithreading

cflags ........... Use CFLAGS environment variable
--cpu= ........... Target a specific CPU, e.g. athlon-xp, x86-64
686 .............. Target 686 machines
586 .............. Target 586 machines
486 .............. Target 486 machines
386 .............. Target 386 machines
slow ............. Don't use compiler optimizations
asneeded ......... Use linker optimization --as-needed
release .......... Use the set of optimizations which work best for mtPaint code
debug ............ Include debugging info in binary
--host= .......... Cross-compile with a specific toolchain, e.g. i586-mingw32

staticpng ........ Statically link PNG library
GIF .............. Use libgif
gif .............. Use libungif
nogif ............ Don't use libgif and libungif
staticgif ........ Statically link GIF library
jpeg ............. Use libjpeg
nojpeg ........... Don't use libjpeg
staticjpeg ....... Statically link JPEG library
jp2 .............. Use libopenjpeg
jasper............ Use libjasper
nojp2 ............ Don't use libopenjpeg and libjasper
staticjp2 ........ Statically link JPEG 2000 library
tiff ............. Use libtiff
notiff ........... Don't use libtiff
statictiff ....... Statically link TIFF library
noft ............. Don't use FreeType
staticft ......... Statically link FreeType library
lcms ............. Use LittleCMS
lcms2............. Use LittleCMS2
nolcms ........... Don't use LittleCMS
staticlcms ....... Statically link LittleCMS library

intl ............. Use internationalized po files
man .............. Install the mtPaint man page

--fakeroot=DIR ... DIR = location of library and include files to use for cross-compilation
icons ............ Compile with alternative icon set - see ./src/icons1/README for details

--prefix=DIR ..... DIR = prefix location of all installs, e.g. /usr or /usr/local (default)
--bindir=DIR ..... DIR = location of bin file to install, ${prefix}/bin by default
--docdir=DIR ..... DIR = location of documentation to install, ${prefix}/share/doc/mtpaint by default
--localedir=DIR .. DIR = location of locale files to install, ${prefix}/share/locale by default
--mandir=DIR ..... DIR = location of man page to install, ${prefix}/share/man/man1 by default

flush ............ Flush directories to initial state
newpo ............ Create ./po/mtpaint.pot
merge ............ Update all po files with new strings - developers only

Environment variables:

CC ............... C compiler (defaults to gcc)
CFLAGS ........... C compiler flags (not recommended; for enabling better optimizations use 'release' option instead)
LDFLAGS .......... linker flags, e.g. -L<libdir>
CPPFLAGS ......... C preprocessor flags, e.g. -I<includedir>
CCLD ............. "test link" command (defaults to $CC -nostartfiles)


Default settings: GNU/Linux system, O2 optimizations, English only version,
mtpaint file picker, mtpaint colour picker.
pkg-config gtk+-2.0 is checked to determine GTK+2 availability in GNU/Linux

EOF

fi

### Detect the OS

if [ -n "$OS" ] ; then
	: # Do nothing
elif [ "$OSTYPE" = "msys" ] ; then
	OS="MinGW/MSYS"
elif [ -z "$MT_HOST" ] ; then
	OS="GNU/Linux"
elif [ "$MT_HOST" != "${MT_HOST%mingw32*}" ] ; then
	OS="MinGW/GNU/Linux"
else
	OS="Other/GNU/Linux"
fi

### Prepare to use selected icon set

mkdir -p src/graphics
cp src/$ICON_SET/*.xpm src/$ICON_SET/*.xbm src/graphics

### Choose which sub-makefiles to run

MAKE_DIRS=src
[ "$MT_LANG" = YES ] && MAKE_DIRS="$MAKE_DIRS po" # translations
[ "$MT_MAN" = YES ] && MAKE_DIRS="$MAKE_DIRS doc" # man page

### Setup directories

if [ "$OS" != "${OS#MinGW/}" ]
then
	EXEEXT=".exe"
	MT_PREFIX="${MT_PREFIX-/c/Program Files/mtPaint}"
else
	MT_PREFIX="${MT_PREFIX-/usr/local}"
fi
MT_BINDIR="${MT_BINDIR:-$MT_PREFIX/bin}"
MT_DATAROOT="${MT_DATAROOT:-$MT_PREFIX/share}"
MT_DOCDIR="${MT_DOCDIR:-$MT_DATAROOT/doc/mtpaint}"
MT_MANDIR="${MT_MANDIR:-$MT_DATAROOT/man}"
if [ "$OS" != "${OS#MinGW/}" ]
then
	MT_LOCDIR="${MT_LOCDIR:-$MT_BINDIR/locale}"
	# Want package-relative path on Windows
	MT_PKGDIR=${MT_BINDIR%/bin}
	[ "$MT_PKGDIR" = "$MT_BINDIR" ] && MT_PKGDIR=${MT_BINDIR%/lib}
	MT_PKGDIR="$MT_PKGDIR/"
	MT_PO="/"
	while [ "$MT_LOCDIR" = "${MT_LOCDIR#$MT_PKGDIR}" ]
	do
		MT_PO="/..$MT_PO"
		if [ "$MT_PKGDIR" = "${MT_PKGDIR%/[!/]*/}" ]
		then # Cannot relativize path - leave it be
			MT_PO=
			break
		fi
		MT_PKGDIR="${MT_PKGDIR%/[!/]*/}/"
	done
	MT_PO="$MT_PO${MT_LOCDIR#$MT_PKGDIR}"
else
	MT_LOCDIR="${MT_LOCDIR:-$MT_DATAROOT/locale}"
	MT_PO="$MT_LOCDIR"
fi

### Set feature flags

[ "$USE_THREADS" = "YES" ] && DEFS="$DEFS -DU_THREADS"
if [ "$MT_FPICK" = mtpaint ]
then
	DEFS="$DEFS -DU_FPICK_MTPAINT"
else # "$MT_FPICK" = gtkfilesel
	DEFS="$DEFS -DU_FPICK_GTKFILESEL"
fi
if [ "$MT_CPICK" = mtpaint ]
then
	DEFS="$DEFS -DU_CPICK_MTPAINT"
else #	"$MT_CPICK" = gtkcolsel
	DEFS="$DEFS -DU_CPICK_GTK"
fi
[ "$MT_ANIM" = ImageMagick ] && DEFS="$DEFS -DU_ANIM_IMAGICK"
# mtPaint version
DEFS="$DEFS -DMT_VERSION='\"$MT_VERSION\"'"

### Setup compiler (only GCC is really supported at this time)

INCLUDES=
LIBS=
if [ "$OS" != "${OS%GNU/Linux}" ]
then
	CC=${CC:-`which ${MT_HOST:+$MT_HOST-}gcc`}
	PKG_CONFIG=${PKG_CONFIG:-${MT_HOST:+$MT_HOST-}pkg-config}
fi
CC=${CC:-gcc}
# Use compiler as linker in tests - this way, both accept "-Wl," in LDFLAGS
CCLD=${CCLD:-$CC -nostartfiles}
# Get GCC version
GCCVER=`$CC -dumpversion`
# Get target architecture
GCCARCH=`$CC -dumpmachine`
# For eternally misconfigured, Windows-hosted MinGW
[ "$GCCARCH" != "${GCCARCH#mingw32}" ] && GCCARCH=i586-mingw32
# For any properly built toolchain
ARCH=${ARCH:-${GCCARCH%%-*}}

if [ -n "$FAKE_ROOT" ] # A way to replace just some libraries, leaving others be
then
	PKGCONFIG () # Check both locations in turn
	{
		PKG_CONFIG_PATH= PKG_CONFIG_LIBDIR="$FAKE_ROOT/lib/pkgconfig" \
			pkg-config --define-variable=prefix="$FAKE_ROOT" "$@" \
			2> /dev/null || "$PKG_CONFIG" "$@"
	}
	MT_TESTLINK="$CCLD -L$FAKE_ROOT/lib -Wl,--unresolved-symbols=ignore-in-shared-libs $LDFLAGS"
	MT_TESTCOMP="$CC -fno-builtin -isystem $FAKE_ROOT/include $CPPFLAGS ${MT_TESTLINK#$CCLD}"
else
	PKGCONFIG ()
	{
		"$PKG_CONFIG" "$@"
	}
	MT_TESTLINK="$CCLD $LDFLAGS"
	MT_TESTCOMP="$CC -fno-builtin $CPPFLAGS $LDFLAGS"
fi

if [ "$OS" != "${OS%/MSYS}" ]
then
	MT_TESTLINK="redir -e /dev/null $MT_TESTLINK -L/lib"
	MT_TESTCOMP="redir -e /dev/null $MT_TESTCOMP -L/lib"
	INCLUDES="-I/include"
	LIBS="-L/lib"
fi
IS_LIB()
{
	$MT_TESTLINK -$1 -o _conf.tmp > /dev/null 2>&1
}
HAVE_FUNC()
{
	echo "main() { $1(); }" > _conf.c
	$MT_TESTCOMP _conf.c -o _conf.tmp > /dev/null 2>&1
}

HAVE_GCC_VER()
{
	# First 2 parts of GCC version
	MT_VN0=${GCCVER%%.*}
	MT_VN1=${GCCVER#$MT_VN0}
	MT_VN0=${MT_VN0%%[!0-9]*}
	MT_VN1=${MT_VN1#.}
	MT_VN1=${MT_VN1%%[!0-9]*}

	# Compare them to given version
	[ ${1%%.*} -eq "$MT_VN0" ] && [ ${1#*.} -le "$MT_VN1" ] || \
		[ ${1%%.*} -lt "$MT_VN0" ]
}

### Detect libraries and functions

if HAVE_FUNC "mkdtemp"
then
	DEFS="$DEFS -DHAVE_MKDTEMP"
fi

if IS_LIB "lgif"
then
	NGIF=${NGIF:-GIF}
fi
if IS_LIB "lungif"
then
	NGIF=${NGIF:-YES}
fi
NGIF=${NGIF:-NO}

if IS_LIB "ljpeg"
then
	NJPEG=${NJPEG:-YES}
fi
NJPEG=${NJPEG:-NO}

if IS_LIB "lopenjpeg"
then
	NJP2=${NJP2:-OpenJPEG}
fi
if IS_LIB "ljasper"
then
	NJP2=${NJP2:-JasPer}
fi
NJP2=${NJP2:-NO}

if IS_LIB "ltiff"
then
	NTIFF=${NTIFF:-YES}
fi
NTIFF=${NTIFF:-NO}

if IS_LIB "lfreetype"
then
	NFT=${NFT:-YES}
fi
NFT=${NFT:-NO}

if IS_LIB "llcms2"
then
	NCMS=${NCMS:-LittleCMS2}
fi
if IS_LIB "llcms"
then
	NCMS=${NCMS:-LittleCMS}
fi
NCMS=${NCMS:-NO}

### Setup optimizations

if [ "$OPTS" = RELEASE ]
then
	# Target i386 when compiling for any x86 CPU;
	# this produces smallest *AND* fastest binary
	case $ARCH in
		i?86) CFLAGS="-O2 ${MARCH:--march=i386}";;
		*) CFLAGS="-O2 $MARCH";;
	esac
	# Add optimizations which are proven to really make mtPaint code faster
	if HAVE_GCC_VER 4.0
	then # GCC 4.x
		CFLAGS="$CFLAGS -fweb -fomit-frame-pointer -fmodulo-sched"
	else # GCC 3.x
		CFLAGS="$CFLAGS -fweb"
	fi
	# Do not add unneeded dependencies
	AS_NEEDED="-Wl,--as-needed"
	# Disable GTK+ debug code
	DEFS="$DEFS -DGTK_NO_CHECK_CASTS -DG_DISABLE_CAST_CHECKS"
elif [ "$OPTS" = DEBUG ]
then
	CFLAGS="-ggdb"
elif [ "$OPTS" = YES ]
then
	CFLAGS="-O2 $MARCH"
elif [ "$OPTS" = NO ]
then
	CFLAGS="$MARCH"
else # $OPTS = CFLAGS
	MARCH=
	# And leave CFLAGS alone
fi
[ "$OPTS" != DEBUG ] && LDFLAGS="-s $LDFLAGS" # Strip debug info
# Set Windows-specific flags
if [ "$OS" != "${OS#MinGW/}" ]
then
	CFLAGS="-mms-bitfields $CFLAGS"
	LDFLAGS="-mwindows $LDFLAGS"
fi
# Enable warnings
if HAVE_GCC_VER 4.0
then # Tell gcc 4.x to shut up
	WARN="-Wall -Wno-pointer-sign"
else
	WARN="-Wall"
fi

### Setup libraries

MT_DLIBS=
MT_SLIBS=
LIB_NAME () # ( lib_ID , static_mode , libs )
{
	if [ "$2" ]
	then
		MT_SLIBS="$MT_SLIBS ${1:+-l$1}$3"
	else
		MT_DLIBS="$MT_DLIBS ${1:+-l$1}$3"
	fi
}

if [ "$NGIF" != NO ]
then
	if [ "$NGIF" = GIF ]
	then
		LIB_NAME gif "$STATIC_GIF"
	else
		LIB_NAME ungif "$STATIC_GIF"
	fi
	DEFS="$DEFS -DU_GIF"
fi
if [ "$NJP2" = OpenJPEG ]
then
	LIB_NAME openjpeg "$STATIC_JP2"
# !!! If <openjpeg.h> isn't found in include path, use CPPFLAGS or symlink;
# I'm not inclined to scan all the places where different packagers can put it
	DEFS="$DEFS -DU_JP2"
	if [ "$STATIC_JP2" ] || [ "$OS" != "GNU/Linux" ]
	then
		DEFS="$DEFS -DOPJ_STATIC"
	fi
fi
if [ "$NJP2" = JasPer ]
then
	LIB_NAME jasper "$STATIC_JP2"
	DEFS="$DEFS -DU_JASPER"
fi
if [ "$NTIFF" = YES ]
then
	LIB_NAME tiff "$STATIC_TIFF"
	DEFS="$DEFS -DU_TIFF"
fi
if [ "$NJPEG" = YES ]
then
	LIB_NAME jpeg "$STATIC_JPEG"
	DEFS="$DEFS -DU_JPEG"
fi
if [ "$NFT" = YES ]
then
	DEFS="$DEFS -DU_FREETYPE"
	if [ "$OS" = "GNU/Linux" ]
	then # Do it the old way, for native builds on *very* old distros
		INCLUDES="$INCLUDES `freetype-config --cflags`"
		LIB_NAME "" "$STATIC_FT" "`freetype-config --libs`"
	elif [ "$OS" != "${OS%/MSYS}" ]
	then # pkg-config may be missing on Windows - hardcode its results
		INCLUDES="$INCLUDES -I/include/freetype2"
		LIB_NAME "" "$STATIC_FT" "-lfreetype -lz"
	else # Use pkg-config
		INCLUDES="$INCLUDES `PKGCONFIG freetype2 --cflags`"
		LIB_NAME "" "$STATIC_FT" "`PKGCONFIG freetype2 --libs`"
	fi
	# libiconv may be separate, or part of libc
	HAVE_FUNC "iconv_open" || LIB_NAME iconv "$STATIC_FT"
fi
if [ "$NCMS" = LittleCMS2 ]
then
	LIB_NAME lcms2 "$STATIC_CMS"
	DEFS="$DEFS -DU_LCMS=2"
fi
if [ "$NCMS" = LittleCMS ]
then
	LIB_NAME lcms "$STATIC_CMS"
	DEFS="$DEFS -DU_LCMS"
fi
LIB_NAME png "$STATIC_PNG"
LIB_NAME z "$STATIC_PNG"
LIB_NAME m
if [ "$MT_LANG" = YES ]
then
	HAVE_FUNC "gettext" || LIB_NAME intl
	DEFS="$DEFS -DU_NLS -DMT_LANG_DEST='\"$MT_PO\"'"
fi

# !!! Would be nice to subtract MT_SLIBS from MT_DLIBS first
LIBS="$LIBS $MT_DLIBS${MT_SLIBS:+ -Wl,-dn $MT_SLIBS -Wl,-dy}"

rm -f _conf.c _conf.tmp

### Setup GTK+

FOUND_GTK=
[ "$OS" != "${OS#MinGW/}" ] && GTK=2
[ "$GTK" != 1 ] && PKGCONFIG gtk+-2.0 --cflags > /dev/null 2>&1 && FOUND_GTK=2 GTK=2
[ "$GTK" != 2 ] && PKGCONFIG gtk+ --cflags > /dev/null 2>&1 && FOUND_GTK=1 GTK=1
GTK=${GTK:-1}

if [ "$USE_THREADS" = NO ] ; then
	THREADS=
elif [ "$GTK" = 2 ] ; then
	THREADS="gthread-2.0"
else # "$GTK" = 1
	THREADS="gthread"
fi

# !!! It is assumed that the nondefault install prefix is the one GTK+ lives in
if [ "$FOUND_GTK" = 2 ]
then
	GTKPREFIX=`PKGCONFIG gtk+-2.0 --variable=prefix`
	INCLUDES="$INCLUDES `PKGCONFIG gtk+-2.0 $THREADS --cflags`"
	LIBS="$LIBS `PKGCONFIG gtk+-2.0 $THREADS --libs`"
elif [ "$FOUND_GTK" = 1 ]
then
# !!! Full equivalent to "gtk-config gtk" would be "pkg-config gtk+ gmodule",
# but for mtPaint, 'gmodule' is nothing but a nuisance anyway
	GTKPREFIX=`PKGCONFIG gtk+ --variable=prefix`
	INCLUDES="$INCLUDES `PKGCONFIG gtk+ $THREADS --cflags`"
	LIBS="$LIBS `PKGCONFIG gtk+ $THREADS --libs`"
elif [ "GTK" = 2 ] && [ "$OS" != "${OS%/MSYS}" ]
then # Windows system w/o working pkg-config
	GTKPREFIX=/
	INCLUDES="$INCLUDES -I/include/gtk-2.0 -I/lib/gtk-2.0/include -I/include/atk-1.0 -I/include/pango-1.0 -I/include/freetype2 -I/include/glib-2.0 -I/lib/glib-2.0/include"
	LIBS="$LIBS -lgtk-win32-2.0 -lgdk-win32-2.0 -lpango-1.0 -lglib-2.0 -lgobject-2.0 -lgdk_pixbuf-2.0 ${THREADS:+-lgthread-2.0}"
elif [ "GTK" = 1 ] && gtk-config --cflags > /dev/null
then # Very old GNU/Linux system
	GTKPREFIX=`gtk-config gtk --prefix`
	INCLUDES="$INCLUDES `gtk-config gtk $THREADS --cflags`"
	LIBS="$LIBS `gtk-config gtk $THREADS --libs | sed 's/-rdynamic//'`"
elif [ "GTK" = 1 ]
then # Even older GNU/Linux system
	GTKPREFIX=/opt/gnome
	GTK_INCLUDE="-I$GTKPREFIX/include/gtk-1.2 -I$GTKPREFIX/include/glib-1.2 -I$GTKPREFIX/lib/glib/include -I/usr/X11R6/include"
	GTK_LIB="-L/usr/lib -L/usr/X11R6/lib -L$GTKPREFIX/lib -lgtk -lgdk -lgmodule -lglib -ldl -lXext -lX11 -lm"
	echo
	echo I have not been able to find gtk-config so I am assuming the following:
	echo
	echo GTK_INCLUDE = $GTK_INCLUDE
	echo GTK_LIB = $GTK_LIB
	echo
	echo If these values are not right for your system, edit the configure script
	echo
	INCLUDES="$INCLUDES $GTK_INCLUDE"
	LIBS="$LIBS $GTK_LIB"
else
	echo "Failed to find required GTK+$GTK libraries" 1>&2
	exit 1
fi
# Also need to add "-lX11" on GTK+2/X systems
[ "$GTK" = 2 ] && [ "$LIBS" != "${LIBS#*gdk-x11}" ] && LIBS="$LIBS -lX11"
# GTK+2 version to use
DEFS="$DEFS${GTK2VERSION:+ -DGTK2VERSION=$GTK2VERSION}"

###

### Rebase the paths, for '--fakeroot' substitutions to work

FAKE_PATHS () # variable, key
{
	FAKE_KEYS=" "
	for A in $1
	do
		[ "$A" = "${A#$2/}" ] && continue
		for B in "$GTKPREFIX/include" "$GTKPREFIX/lib"\
			/usr/include /usr/lib /usr/local/include /usr/local/lib
		do
			[ "$A" != "${A#$2$B}" ] || continue
			C="$2$FAKE_ROOT${A#$2${B%/*}}"
			[ "$C" != "$A" ] && [ "$FAKE_KEYS" = "${FAKE_KEYS#* $C }" ] &&\
				FAKE_KEYS="$FAKE_KEYS$C "
			break
		done
	done
	echo "$FAKE_KEYS"
}
if [ "$FAKE_ROOT" ]
then
	# !!! Spaces in paths will NOT be well received here
	FAKE_PATHS "$LIBS" -L
	LIBS="-L$FAKE_ROOT/lib $FAKE_KEYS $LIBS"
	FAKE_PATHS "$INCLUDES" -I
	INCLUDES="-isystem $FAKE_ROOT/include $FAKE_KEYS $INCLUDES"
	AS_NEEDED="-Wl,--as-needed,--no-add-needed,--unresolved-symbols=ignore-in-shared-libs"
fi

### Write config

cat << CONFIG > "$GTK_FILE"
CC = $CC $WARN
EXEEXT = $EXEEXT
MT_VERSION=$MT_VERSION
MT_DATE=$MT_DATE
MT_PREFIX="$MT_PREFIX"
MT_DATAROOT="$MT_DATAROOT"
MT_LANG_DEST="$MT_LOCDIR"
MT_MAN_DEST="$MT_MANDIR"
LDFLAG = $AS_NEEDED $LIBS $LDFLAGS
CFLAG = $DEFS $INCLUDES $CPPFLAGS $CFLAGS
subdirs = $MAKE_DIRS
BIN_INSTALL="$MT_BINDIR"
CONFIG
HAVE_GCC_VER 3.3 && echo "HAVE_RANDSEED=1" >> $GTK_FILE

### Report config

eval STATICLIBS=\"$STATICLIBS\"
STATICLIBS=`echo -n "$STATICLIBS" | sed -e 's/  */ /g' -e 's/^ //'`
cat << CONFIG

---------------------
mtPaint Configuration
---------------------

-------
General
-------

    Version             $MT_V
    System              $OS
    Toolkit             GTK+$GTK${GTK2VERSION:+.$GTK2VERSION}
    File Picker         $MT_FPICK
    Colour Picker       $MT_CPICK
    Animation Package   $MT_ANIM
    Use FreeType        $NFT
    Use CMS             $NCMS
    Icon set            $ICON_SET
    Internationalized   $MT_LANG
    Multithreaded       $USE_THREADS

--------
Compiler
--------

    Optimizations       $OPTS
    CFLAGS              $CFLAGS
    LDFLAGS             ${AS_NEEDED:+$AS_NEEDED }$LDFLAGS
    Static libraries    ${STATICLIBS:-NONE}

----------
File Types
----------

    Use GIF             $NGIF
    Use JPEG            $NJPEG
    Use JPEG 2000       $NJP2
    Use TIFF            $NTIFF

------------
Installation
------------

    Binary install      $MT_BINDIR
CONFIG
[ "$MT_LANG" = YES ] && cat << CONFIG
    Locale install      $MT_LOCDIR
    Locale program      $MT_PO
CONFIG
cat << CONFIG
    Install man page    $MT_MAN
CONFIG
[ "$MT_MAN" = YES ] && cat << CONFIG
    Man page install    $MT_MANDIR
CONFIG
echo
