dnl
dnl configure.in for TI85 Emulator, (c) 2001 Milan Pikula <www@terminus.sk>
dnl

dnl Init
AC_INIT(src/main.c)
AM_INIT_AUTOMAKE(ti85emu, 0.1.0)
AM_CONFIG_HEADER(config.h)
AC_PROG_CC
AC_PROG_CXX

AC_PROG_INSTALL
AC_PROG_RANLIB
dnl *** AC_PROG_MAKE_SET

dnl portability?
AC_MINIX
AC_ISC_POSIX
AC_AIX

AC_CHECK_HEADERS(string.h)

dnl Look at the GUI option
AC_DEFUN(TEST_LIB,[ AC_CHECK_LIB($1,$2,,AC_MSG_ERROR(*** Missing library $1 ***)) ])
AC_DEFUN(TEST_LIBS,[ AC_CHECK_LIB($1,$2,,AC_MSG_ERROR(*** Missing library $1 ***),$3) ])


dnl AC_MSG_CHECKING(for GUI to use)

AC_ARG_WITH(gui,
[  --with-gui=X            specify the graphical user interface (GUI) to:
                          gtk   use GTK user interface
                          fltk  use FLTK user interface],
	[
dnl	AC_MSG_RESULT(${withval} (forced))
	gui="${withval}"],
	[gui="unset"])

AC_ARG_ENABLE(fltk-flashing,
[  --enable-fltk-flashing  enable this to get faster emulator, at the cost
                          of flashing display. This is suitable for use
                          on slow machines with LCD display, such as
                          Agenda VR3d. Default is DISABLE.],
	[
	if test "$enable_fltk_flashing" = "yes"; then
		AC_DEFINE(FLTK_FLASHING)
	fi
	],
	[])

AC_ARG_ENABLE(fltk-relevant,
[  --enable-fltk-relevant  enable this to avoid unnecessary screen
                          redrawing. This improves the speed if running
                          over network or on a slow X display, but
                          slightly increases the 
                          on slow machines with LCD display, such as
                          Agenda VR3d. Default is ENABLE.],
	[
	if test "$enable_fltk_relevant" = "yes"; then
		AC_DEFINE(FLTK_RELEVANT)
	fi
	],
	[AC_DEFINE(FLTK_RELEVANT)])

AC_ARG_ENABLE(gtk-relevant,
[  --enable-gtk-relevant   enable this to avoid unnecessary screen
                          redrawing. This improves the speed if running
                          over network or on a slow X display, but
                          slightly increases the 
                          on slow machines with LCD display, such as
                          Agenda VR3d. Default is ENABLE.],
	[
	if test "$enable_gtk_relevant" = "yes"; then
		AC_DEFINE(GTK_RELEVANT)
	fi
	],
	[AC_DEFINE(GTK_RELEVANT)])

if test "$gui" = "unset"; then
	AC_CHECK_LIB(gtk,main,[
dnl	AC_MSG_RESULT(gtk)
		gui=gtk
	],[],[-lgdk])
fi

if test "$gui" = "unset"; then
	AC_CHECK_LIB(fltk,main,[
dnl	AC_MSG_RESULT(fltk)
		gui=fltk
	],[])
fi

dnl Check, if the given GUI is correct

guifile="0"

if test "$gui" = "gtk"; then
		dnl TEST_LIB(X11,XCreateSimpleWindow)
		dnl TEST_LIB(Xext,XMissingExtension)

		dnl TEST_LIBS(gtk,gtk_window_new,[-lgdk])
		dnl TEST_LIB(gdk,gdk_init)
		AM_PATH_GLIB(1.0.0, CFLAGS="$CFLAGS $GLIB_CFLAGS" LIBS="$LIBS $GLIB_LIBS" ,AC_MSG_ERROR(*** GLIB >= 1.0.0 required ***))
		AM_PATH_GTK(1.0.0, CFLAGS="$CFLAGS $GTK_CFLAGS" LIBS="$LIBS $GTK_LIBS" ,AC_MSG_ERROR(*** GTK >= 1.0.0 required ***))

		AC_DEFINE(GUI_GTK)
		guifile="ti85emu_gtk"
		msxfile="libmsx.a"
fi

if test "$gui" = "fltk"; then
		TEST_LIB(stdc++,cout)
		TEST_LIB(X11,XCreateSimpleWindow)
		TEST_LIB(Xext,XMissingExtension)
		TEST_LIB(fltk,fl_yes)

		AC_DEFINE(GUI_FLTK)
		guifile="ti85emu_fltk"
		msxfile="libxmsx.a"
fi

if test "$guifile" = "0"; then
	AC_MSG_ERROR(*** Cannot find a GUI. Try ./configure --help ***)
fi

AC_ARG_WITH(speed,
[  --with-speed=X          set the speed of emulation to:
                          full   run at FULL SPEED including idle time of
                                 calculator (this kills the machine and also
                                 turns the calculator off too often)
                          freal  run at FULL SPEED during computations,
                                 REAL SPEED when idle. (this enables the fast
                                 computations and graphs, while preserves
                                 the real blinking of cursor and power off)
                                 (default)
                          real   run at REAL SPEED in computations and when
                                 idle. (this mode is suitable for playing
                                 games and running assembler software)],
	[
	speed="${withval}"],
	[speed="freal"])

if test "$speed" = "full"; then
	AC_DEFINE(SPEED_FULL)
fi
if test "$speed" = "freal"; then
	AC_DEFINE(SPEED_FREAL)
fi
if test "$speed" = "real"; then
	AC_DEFINE(SPEED_REAL)
fi

AC_ARG_WITH(snapfile,
[  --with-snapfile=X       sets the file name for a snapshot file, used
                          to store the state of the calculator. Default
                          is '85snap.sna' in the current directory.],
	[
	AC_DEFINE_UNQUOTED(SNAPFILE,"${withval}")],
	[AC_DEFINE_UNQUOTED(SNAPFILE,"85snap.sna")])

AC_ARG_WITH(romfile,
[  --with-romfile=X        sets the file name for a ROM image file.
                          Default is '/usr/share/ti85rom.bin'.],
	[
	AC_DEFINE_UNQUOTED(ROMFILE,"${withval}")],
	[AC_DEFINE_UNQUOTED(ROMFILE,"/usr/share/ti85rom.bin")])


AC_SUBST(guifile)
AC_SUBST(msxfile)

AC_SUBST(GUI_FLTK)
AC_SUBST(FLTK_FLASHING)
AC_SUBST(FLTK_RELEVANT)

AC_SUBST(GUI_GTK)
AC_SUBST(GTK_RELEVANT)

AC_SUBST(SPEED_FULL)
AC_SUBST(SPEED_FREAL)
AC_SUBST(SPEED_REAL)

AC_SUBST(SNAPFILE)
AC_SUBST(ROMFILE)

AC_SUBST(PACKAGE)
AC_SUBST(VERSION)

AC_OUTPUT(Makefile src/Makefile src/MSX/Makefile)