dnl Process this file with autoconf to produce a configure script.

dnl Init autoconf
AC_INIT(src/sub_main.c)
AC_PREREQ(2.52)

dnl Propagate some vars in sub-Makefile
VERSION=5.03
PACKAGE=tilp
AC_SUBST(VERSION)
AC_SUBST(PACKAGE)

dnl Set library version number
MAJOR_VERSION=5
MINOR_VERSION=0
MICRO_VERSION=2
dnl VERSION=$MAJOR_VERSION.$MINOR_VERSION.$MICRO_VERSION

dnl Pass variables
AC_SUBST(MAJOR_VERSION)
AC_SUBST(MINOR_VERSION)
AC_SUBST(MICRO_VERSION)
dnl AC_SUBST(VERSION)

dnl libtool versioning
LT_RELEASE=$MAJOR_VERSION.$MINOR_VERSION
LT_CURRENT=`expr $MINOR_VERSION + $MAJOR_VERSION`
LT_REVISION=$MICRO_VERSION
LT_AGE=$MINOR_VERSION
AC_SUBST(LT_RELEASE)
AC_SUBST(LT_CURRENT)
AC_SUBST(LT_REVISION)
AC_SUBST(LT_AGE)

dnl Determine the system type
AC_CANONICAL_SYSTEM
dnl Determine the host type
dnl AC_CANONICAL_HOST

dnl Initialize libtool
AM_PROG_LIBTOOL

dnl Change the default prefix (/usr/local) to /usr
AC_PREFIX_DEFAULT('/usr')

dnl Create the config.h file and set version & package name
AM_INIT_AUTOMAKE($PACKAGE, $VERSION)
AM_CONFIG_HEADER(config.h)

dnl Substitue the options variable
dnl AC_SUBST_FILE(options)
dnl options="-DGTK -DVERBOSE"

# Build time sanity check...
AM_SANITY_CHECK

dnl Just for fun :)
echo -n "checking for something to drink while compiling..."
echo " err: no fridge found"

dnl Checks for programs.
dnl AC_ARG_PROGRAM
AC_PROG_CC
AC_PROG_INSTALL
AC_PROG_MAKE_SET
AC_PROG_LN_S
AC_ISC_POSIX
AC_PROG_LIBTOOL

dnl Checks for libraries.
AC_CHECK_LIB(dl, dlopen)
AC_CHECK_LIB(curses, initscr)
AC_CHECK_LIB(ticables, ticable_get_version)
AC_CHECK_LIB(ticalcs, ticalc_get_version)
AC_CHECK_LIB(tiffep, tiffep_get_version)
AC_CHECK_LIB(jpeg, jpeg_std_error)
AC_CHECK_LIB(Ilib, ICreateImage)
AC_CHECK_LIB(m, pow)

dnl Checks for ticables-config
AC_CHECK_PROG(TICABLES_CONFIG, ticables-config, yes, no)
if test "$TICABLES_CONFIG" = "no"; then
        echo ;
        echo "Error: cannot find ticables-config. Do you have libticables installed ?" ; 
	echo "You can download it from" ;
        echo "<http://lpg.ticalc.org/prj_tilp/download-en.html> ..." ;
        echo ;
        exit
else
        TICABLES_LIBS=`ticables-config --libs`
        TICABLES_CFLAGS=`ticables-config --cflags`
        TICABLES_VERSION=`ticables-config --version`

        LIBS="$LIBS $TICABLES_LIBS"
        CFLAGS="$CFLAGS $TICABLES_CFLAGS"
fi

CFLAGS="$CFLAGS"
AC_SUBST(CFLAGS)

dnl Checks for ticalcs-config
AC_CHECK_PROG(TICALCS_CONFIG, ticalcs-config, yes, no)
if test "$TICALCS_CONFIG" = "no"; then
        echo ;
        echo "Error: cannot find ticables-config. Do you have libticables installed ?" ; 
	echo "You can download it from" ;
        echo "<http://lpg.ticalc.org/prj_tilp/download-en.html> ..." ;
        echo ;
        exit
else
        TICALCS_LIBS=`ticalcs-config --libs`
        TICALCS_CFLAGS=`ticalcs-config --cflags`
        TICALCS_VERSION=`ticalcs-config --version`

        LIBS="$LIBS $TICALCS_LIBS"
        CFLAGS="$CFLAGS $TICALCS_CFLAGS"
fi

CFLAGS="$CFLAGS"
AC_SUBST(CFLAGS)

dnl Checks for tiffep-config
AC_CHECK_PROG(TIFFEP_CONFIG, tiffep-config, yes, no)
if test "$TIFFEP_CONFIG" = "no"; then
        echo ;
        echo "Warning: cannot find tiffep-config. Do you have libtiffep installed ?" ;
	echo "Some new functionnalities of TiLP (such as GFM) will not be available." ; 
	echo "You can download it from" ;
        echo "<http://lpg.ticalc.org/prj_tiffep/index.html> ..." ;
        echo ;
else
        TIFFEP_LIBS=`tiffep-config --libs`
        TIFFEP_CFLAGS=`tiffep-config --cflags`
        TIFFEP_VERSION=`tiffep-config --version`

        LIBS="$LIBS $TIFFEP_LIBS"
        CFLAGS="$CFLAGS $TIFFEP_CFLAGS"
fi

CFLAGS="$CFLAGS"
AC_SUBST(CFLAGS)

dnl Checks for gtk-config
AC_CHECK_PROG(GTK_CONFIG, gtk-config, yes, no)
if test "$GTK_CONFIG" = "no"; then
        echo ;
        echo "Error: cannot find gtk-config. Do you have gtk installed ?";
	echo "You can download it from ftp://ftp.gtk.org/pub/gtk/v1.2";
	echo "Make sure to also download the same version" ;
        echo "of glib too from that same directory" ;
        echo ;
        exit
else
        GTK_LIBS=`gtk-config --libs`
        GTK_CFLAGS=`gtk-config --cflags`
        GTK_VERSION=`gtk-config --version`

        LIBS="$LIBS $GTK_LIBS"
        CFLAGS="$CFLAGS $GTK_CFLAGS"
fi

CFLAGS="$CFLAGS"
AC_SUBST(CFLAGS)

dnl Make sure we are using gtk+ 1.1.x or higher
AC_MSG_CHECKING(version of gtk+...)
gtk_maj_rev=`echo $GTK_VERSION | cut -f1-2 -d.`
if test "$gtk_maj_rev" = "1.2" ; then
   AC_MSG_RESULT(($GTK_VERSION))
else
   AC_MSG_RESULT(($GTK_VERSION))
   if test "$gtk_maj_rev" = "1.1" ; then
        AC_WARN(You have gtk+ 1.1 installed on your machine. I would)
        AC_WARN(recommend upgrading to the stable 1.2 series)
        AC_WARN(You can download it from ftp://ftp.gtk.org/pub/gtk/v1.2)
        AC_WARN(Make sure to also download the same version of glib too)
   else
        echo ;
        echo "Error: You need gtk+ 1.1.x or higher to install tilp. You can dow\nload it from" ;
        echo "ftp://ftp.gtk.org/pub/gtk/v1.2 I would recommend downloading the \stable 1.2" ;
        echo "series. Make sure to also download the same version of glib too f\rom that same" ;
        echo "directory" ;
        echo ;
        exit
   fi
fi

CFLAGS="$CFLAGS -Wall"
AC_SUBST(CFLAGS)

dnl Checks for header files.
AC_PATH_X
AC_HEADER_DIRENT
AC_HEADER_STDC
AC_CHECK_HEADERS(strings.h unistd.h malloc.h sys/file.h fcntl.h direct.h alloca.h errno.h sys/time.h utime.h)
AC_CHECK_HEADERS(tilp/macros.h tilp/typedefs.h tilp/export.h tilp/cabl_def.h tilp/cabl_int.h tilp/calc_def.h tilp/calc_int.h)
AC_CHECK_HEADERS(tiffep/tiffep.h)
AC_CHECK_HEADERS(locale.h libintl.h)
AC_CHECK_HEADER(jpeglib.h)
AC_CHECK_HEADER(Ilib.h)
AC_CHECK_MEMBERS(struct stat.st_blksize)

dnl Checks for typedefs, structures, and compiler characteristics.
AC_C_CONST
AC_TYPE_UID_T
AC_C_INLINE
AC_TYPE_MODE_T
AC_TYPE_OFF_T
AC_TYPE_SIZE_T
AC_TYPE_PID_T
AC_TYPE_SIGNAL
AC_FUNC_ERROR_AT_LINE
AC_HEADER_MAJOR

dnl Checks for library functions.
AC_FUNC_VPRINTF
AC_FUNC_MALLOC
AC_FUNC_STAT
AC_CHECK_FUNCS(getcwd mkdir strstr strtol dup2 getwd memchr memset strrchr pow)

dnl Internationalization (i18n)
ALL_LINGUAS="fr de it es nl"
AM_GNU_GETTEXT

dnl Pass locale directory
PACKAGE_LOCALE_DIR=${datadir}/locale
AC_SUBST(PACKAGE_LOCALE_DIR)

dnl Enable to exit HOME dir (piece of code borrowed from Gtktalog)
ENABLE_EXIT_HOMEDIR=no
   AC_ARG_ENABLE(exit-homedir,
        [  --enable-exit-homedir   allow user to exit home dir [default=no]],
        [case "x${enableval}" in
                 xyes)         ENABLE_EXIT_HOMEDIR=yes ;;
                 xno)          ENABLE_EXIT_HOMEDIR=no ;;
                 *)            ENABLE_EXIT_HOMEDIR=no ;;
             esac])
if test "x$ENABLE_EXIT_HOMEDIR" = "xyes" ;
then
        AC_DEFINE(ALLOW_EXIT_HOMEDIR)
fi

dnl Enable/disable TIFFEP server use
ENABLE_TIFFEP_SERVER=no
   AC_ARG_ENABLE(tiffep-server,
        [  --enable-tiffep   use the TIFFEP server [default=no]],
        [case "x${enableval}" in
                 xyes)         ENABLE_TIFFEP_SERVER=yes ;;
                 xno)          ENABLE_TIFFEP_SERVER=no ;;
                 *)            ENABLE_TIFFEP_SERVER=no ;;
             esac])
if test "x$ENABLE_TIFFEP_SERVER" = "xyes" ;
then
        AC_DEFINE(ALLOW_TIFFEP_SERVER)
fi

AC_OUTPUT([Makefile fonts/Makefile help/Makefile intl/Makefile \
	man/Makefile misc/Makefile pixmaps/Makefile po/Makefile.in \
	src/Makefile win32/Makefile \
	tilp.lsm tilp.spec])

echo ;
echo "If you are a single user and you want be able to move in your filesystem, " ;
echo "you can choose to add the '--enable-exit-homedir' option on the 'configure'" ;
echo "command line. By default, it is disabled for security reasons !" ;
echo ;
echo "If you want some applications to be able to use TiLP trough the TIFFEP server " ;
echo "(experimental), you can add the '--enable-tiffep-server' options on the" ;
echo "'configure' command line. By default, this option is disabled !" ;
echo "Nevertheless, if the TIFFEP library (libtiffep) is available, it will be used." ;
echo ;