dnl Process this file with autoconf to produce a configure script.
dnl Written 1996, 1997 Bernd Schmidt

dnl If you can use anything from this file, feel free to steal it. I put
dnl this into the public domain.

dnl There are still many uncaught errors (e.g. --enable-dga on an Amiga)
dnl I didn't have the nerve to track them all down.

AC_INIT(amiga/source/transdisk.c)
AC_PREREQ(2.12)
dnl Checks for programs.
AC_PROG_CC

AC_PROG_CPP
AC_PROG_MAKE_SET
AC_CHECK_PROG(HAVE_WISH40,wish4.0,yes,no)
AC_PATH_PROG(FILEPRG, file, not-found)

AC_AIX
AC_ISC_POSIX

NR_WARNINGS=0
NR_ERRORS=0

NEED_THREAD_SUPPORT=no

ADDITIONAL_CFLAGS=
OPTIMIZE_CFLAGS=
WARNING_CFLAGS=
DEBUG_CFLAGS=
NO_SCHED_CFLAGS=

dnl Checks for libraries.
HAVE_BEOS=no
HAVE_POS=no
dnl Replace `main' with a function in -lMedia_s: (Ian!)
AC_CHECK_LIB(Media_s, main, HAVE_MEDIA_LIB=yes, HAVE_MEDIA_LIB=no)
dnl Replace `main' with a function in -lNeXT_s:
AC_CHECK_LIB(NeXT_s, main, HAVE_NEXT_LIB=yes, HAVE_NEXT_LIB=no)
AC_CHECK_LIB(amiga, OpenLibrary, HAVE_AMIGA_LIB=yes, HAVE_AMIGA_LIB=n)
AC_CHECK_LIB(vga, vga_setmode, HAVE_SVGA_LIB=yes, HAVE_SVGA_LIB=no)
AC_CHECK_LIB(AF, AFOpenAudioConn, HAVE_AF_LIB=yes, HAVE_AF_LIB=no)
AC_CHECK_LIB(ncurses, waddch, HAVE_NCURSES_LIB=yes, HAVE_NCURSES_LIB=no)
AC_CHECK_LIB(pthread, pthread_create, HAVE_PTHREAD_LIB=yes, HAVE_PTHREAD_LIB=no)
AC_CHECK_LIB(posix4, sem_init, HAVE_POSIX4_LIB=yes, HAVE_POSIX4_LIB=no)
AC_CHECK_LIB(ggi, ggiInit, HAVE_GGI_LIB=yes, HAVE_GGI_LIB=no)

dnl Check for pOS or -target=p.os
if [[ $target = "p.os" ]]; then
    HAVE_POS=yes
else
dnl Check for pOS

cat >conftest.c << EOF
int main()
{
#ifdef __POS__
printf("POS\n");
#endif
return 0;
}
EOF
$CC $CFLAGS conftest.c -c -o conftest.o
$CC conftest.o -o conftest
./conftest >conftest.file
if grep POS conftest.file >/dev/null; then
  HAVE_POS=yes
else
  HAVE_POS=no
fi
rm -f conftest*
fi

AC_PATH_XTRA
AC_CONFIG_HEADER(src/include/sysconfig.h)

AC_HEADER_DIRENT
AC_HEADER_STDC

dnl @@@ Is <sys/termios.h> the right way or is it <termios.h>?
AC_CHECK_HEADERS(unistd.h fcntl.h sys/time.h sys/types.h utime.h string.h strings.h values.h ncurses.h curses.h)
AC_CHECK_HEADERS(sys/vfs.h sys/mount.h sys/select.h sys/param.h sys/statfs.h sys/statvfs.h sys/stat.h linux/joystick.h)
AC_CHECK_HEADERS(sys/soundcard.h machine/soundcard.h sun/audioio.h sys/audioio.h getopt.h features.h sys/termios.h)
AC_CHECK_HEADERS(posix_opt.h sys/ioctl.h sys/ipc.h sys/shm.h)
AC_CHECK_HEADERS(ggi/libggi.h gtk/gtk.h X11/forms.h forms.h)
AC_CHECK_HEADER(be/Be.h, HAVE_BEOS=yes, HAVE_BEOS=no)

AC_CHECK_SIZEOF(char, 1)
AC_CHECK_SIZEOF(short, 2)
AC_CHECK_SIZEOF(int, 4)
AC_CHECK_SIZEOF(long, 4)
AC_CHECK_SIZEOF(long long, 8)

dnl Checks for typedefs, structures, and compiler characteristics.
AC_C_CONST
AC_C_INLINE
if [[ "x$ac_cv_c_inline" = "xno" ]]; then
  ac_cv_c_inline=
fi
AC_TYPE_MODE_T
AC_TYPE_OFF_T
AC_TYPE_PID_T
AC_STRUCT_ST_BLOCKS
AC_HEADER_TIME
AC_STRUCT_TM

dnl Checks for library functions.
AC_PROG_GCC_TRADITIONAL
AC_FUNC_MEMCMP
AC_TYPE_SIGNAL
AC_FUNC_UTIME_NULL
AC_CHECK_FUNCS(getcwd getopt strdup gettimeofday sigaction mkdir rmdir select strerror strstr statfs)
AC_CHECK_FUNCS(tcgetattr cfmakeraw readdir_r)

AC_MSG_CHECKING(how many args statfs takes)
if [[ "x$ac_cv_func_statfs" = "xyes" ]]; then
  AC_TRY_COMPILE([
#include "confdefs.h"
#ifdef HAVE_SYS_TYPES_H
#include <sys/types.h>
#endif
#ifdef HAVE_SYS_PARAM_H
#include <sys/param.h>
#endif
#ifdef HAVE_SYS_MOUNT_H
#include <sys/mount.h>
#endif
#ifdef HAVE_SYS_SELECT_H
#include <sys/select.h>
#endif
#ifdef HAVE_SYS_VFS_H
#include <sys/vfs.h>
#endif
#ifdef HAVE_SYS_STATFS_H
#include <sys/statfs.h>
#endif
#ifdef HAVE_SYS_STATVFS_H
#include <sys/statvfs.h>
#endif],[struct statfs statbuf;statfs("/",&statbuf);],
AC_MSG_RESULT(2) 
STATFS_NO_ARGS=2,
AC_MSG_RESULT(4)
STATFS_NO_ARGS=4)
fi

AC_MSG_CHECKING(whether to use f_bavail or f_bfree)
if [[ "x$ac_cv_func_statfs" = "xyes" ]]; then
  AC_TRY_COMPILE([
#include "confdefs.h"
#ifdef HAVE_SYS_TYPES_H
#include <sys/types.h>
#endif
#ifdef HAVE_SYS_PARAM_H
#include <sys/param.h>
#endif
#ifdef HAVE_SYS_MOUNT_H
#include <sys/mount.h>
#endif
#ifdef HAVE_SYS_SELECT_H
#include <sys/select.h>
#endif
#ifdef HAVE_SYS_VFS_H
#include <sys/vfs.h>
#endif
#ifdef HAVE_SYS_STATFS_H
#include <sys/statfs.h>
#endif
#ifdef HAVE_SYS_STATVFS_H
#include <sys/statvfs.h>
#endif],[struct statfs statbuf;statbuf.f_bavail;],
AC_MSG_RESULT(f_bavail) 
STATBUF_BAVAIL=f_bavail,
AC_MSG_RESULT(f_bfree)
STATBUF_BAVAIL=f_bfree)
fi

if [[ "x$ac_cv_header_linux_joystick_h" = "xyes" ]]; then
  AC_MSG_CHECKING(whether linux/joystick.h is broken)
  if grep "#include" /usr/include/linux/joystick.h >/dev/null; then
    AC_MSG_RESULT(yes)
    BROKEN_JOYSTICK_H=1
    grep -v "#include" /usr/include/linux/joystick.h >src/include/ljoystick.h
  else
    AC_MSG_RESULT(no)
    BROKEN_JOYSTICK_H=0
  fi
  dnl Alan Cox or someone else kindly changed all the types when integrating
  dnl the joystick driver into the kernel so we have to add some more
  dnl conditionals...
  AC_MSG_CHECKING(what types linux/joystick.h defines)
  if grep "JS_DATA_TYPE" /usr/include/linux/joystick.h >/dev/null; then
    AC_MSG_RESULT(the old ones)
    OLD_JOYSTICK_H=1
  else
    AC_MSG_RESULT(the new ones)
    OLD_JOYSTICK_H=0
  fi
fi

dnl Verify that the ncurses installation makes some sense.

if [[ "x$HAVE_NCURSES_LIB" = "xyes" ]]; then
  if [[ "x$ac_cv_header_ncurses_h" = "xno" -a "x$ac_cv_header_curses_h" = "xno" ]]; then
    echo "Installation problem, found libncurses but neither curses.h nor ncurses.h!"
    HAVE_NCURSES_LIB=no
    NR_ERRORS=`expr $NR_ERRORS + 1`
  else
    if [[ "x$ac_cv_header_ncurses_h" = "xno" ]]; then
      AC_MSG_CHECKING(for attr_t in curses.h)
      AC_TRY_COMPILE([#include <curses.h>],[{ attr_t a; a = A_NORMAL; }], AC_MSG_RESULT(yes),
      [
        ADDITIONAL_CFLAGS="$ADDITIONAL_CFLAGS -DDONT_HAVE_ATTR_T"
        AC_MSG_RESULT(no)
	NR_WARNINGS=`expr $NR_WARNINGS + 1`
	echo "Please install a newer version of libncurses if you can."
      ])
    else
      AC_MSG_CHECKING(for attr_t in ncurses.h)
      AC_TRY_COMPILE([#include <ncurses.h>],[{ attr_t a; a = A_NORMAL; }], AC_MSG_RESULT(yes),
      [
        ADDITIONAL_CFLAGS="$ADDITIONAL_CFLAGS -DDONT_HAVE_ATTR_T"
        AC_MSG_RESULT(no)
	NR_WARNINGS=`expr $NR_WARNINGS + 1`
	echo "Please install a newer version of libncurses if you can."
      ])
    fi
  fi
fi

DO_PROFILING=no
WANT_GGI=dunno
WANT_SVGALIB=dunno
WANT_ASCIIART=dunno
WANT_UI=dunno
WANT_TKGUI=no
WANT_XFGUI=no
WANT_NCURSES_UI=no
WANT_DGA=no
WANT_VIDMODE=no
SYSTEM_IS_ELF=dunno

AC_ARG_ENABLE(profiling,[  --enable-profiling      Build a profiling (SLOW!) version],[DO_PROFILING=$enableval],[])
AC_ARG_WITH(svgalib,[  --with-svgalib          Use SVGAlib for graphics output],[WANT_SVGALIB=$withval],[])
AC_ARG_WITH(ggi,[  --with-ggi              Use GGI for graphics output],[WANT_GGI=$withval],[])
AC_ARG_WITH(asciiart,[  --with-asciiart         Use ncurses ascii art for graphics output],[WANT_ASCIIART=$withval],[])
AC_ARG_ENABLE(dga,[  --enable-dga            X11 version: Use the DGA extension],[WANT_DGA=$enableval],[])
AC_ARG_ENABLE(vidmode,[  --enable-vidmode        X11 version: Use the XF86VidMode extension],[WANT_VIDMODE=$enableval],[])
AC_ARG_ENABLE(ui,[  --enable-ui             Use a user interface if possible (default on)],[WANT_UI=$enableval],[])
AC_ARG_ENABLE(xfgui,[  --enable-xfgui          X11 version: Use XForms GUI instead of the gtk+ one],[WANT_XFGUI=$enableval],[])
AC_ARG_ENABLE(tkgui,[  --enable-tkgui          X11 version: Use Tk GUI instead of the gtk+ one],[WANT_TKGUI=$enableval],[])
AC_ARG_WITH(elf,[  --with-elf              Explicitly state that this system is ELF],[SYSTEM_IS_ELF=$withval],[])

dnl Some simple plausibility tests...

if [[ "x$WANT_DGA" = "xyes" ]]; then
  if [[ "x$WANT_SVGALIB" = "xyes" -o "x$WANT_GGI" = "xyes" -o "x$WANT_ASCIIART" = "xyes" ]]; then
    echo "You can't enable DGA for SVGAlib, GGI and ncurses targets!"
    NR_ERRORS=`expr $NR_ERRORS + 1`
    WANT_DGA=no
  fi
fi

if [[ "x$WANT_DGA" = "xyes" -a "x$no_x" = "xyes" ]]; then
  echo "Ignoring --enable-dga, since X was disabled or not found."
  NR_ERRORS=`expr $NR_ERRORS + 1`
  WANT_DGA=no
fi

if [[ "x$WANT_DGA" = "xno" -a "x$WANT_VIDMODE" = "xyes" ]]; then
  echo "The XF86VidMode extension can only be used in DGA mode. Disabling it."
  NR_ERRORS=`expr $NR_ERRORS + 1`
  WANT_VIDMODE=no
fi

dnl Make sure WANT_UI is set if WANT_XFGUI is set.

if [[ "x$WANT_UI" = "xno" ]]; then
  if [[ "x$WANT_XFGUI" = "xyes" -o "x$WANT_TKGUI" = "xyes" ]]; then
    echo "You can't specify --disable-ui with --enable-xfgui or --enable-tkgui."
    echo "Disabling GUI."
    NR_ERRORS=`expr $NR_ERRORS + 1`
    WANT_XFGUI=no
  fi
fi

dnl Check if we have the libraries needed for the user's selection.

if [[ "x$WANT_SVGALIB" = "xyes" ]]; then
  if [[ "x$HAVE_SVGA_LIB" = "xno" ]]; then
    echo "Could not find libsvga, disabling svgalib support."
    NR_ERRORS=`expr $NR_ERRORS + 1`
    WANT_GGI=no
  else
    no_x=yes
  fi
fi

if [[ "x$WANT_GGI" = "xyes" ]]; then
  if [[ "x$HAVE_GGI_LIB" = "xno" ]]; then
    echo "Could not find libggi, disabling GGI support."
    NR_ERRORS=`expr $NR_ERRORS + 1`
    WANT_GGI=no
  else if [[ "x$WANT_SVGALIB" = "xyes" ]]; then
    echo "You can't configure for both SVGAlib and GGI. Disabling GGI."
    NR_ERRORS=`expr $NR_ERRORS + 1`
    WANT_GGI=no
  else
    no_x=yes
  fi
  fi
fi

if [[ "x$WANT_ASCIIART" = "xyes" ]]; then
  if [[ "x$HAVE_NCURSES_LIB" = "xno" ]]; then
    echo "Could not find libncurses, disabling ascii art support."
    NR_ERRORS=`expr $NR_ERRORS + 1`
    WANT_ASCIIART=no
  else if [[ "x$WANT_SVGALIB" = "xyes" -o "x$WANT_GGI" = "xyes" ]]; then
    echo "You can't configure for both ncurses and another target. Disabling ncurses."
    NR_ERRORS=`expr $NR_ERRORS + 1`
    WANT_ASCIIART=no
  else
    no_x=yes
  fi
  fi
fi

dnl If the user wants DGA, see if we have it.
dnl This must come after we checked for X11.

if [[ "x$WANT_DGA" = "xyes" ]]; then
  TMP_SAVE_LIBS=$LIBS
  LIBS="$X_LIBS $LIBS"
  AC_CHECK_LIB(Xxf86dga, XF86DGAQueryExtension, HAVE_DGA=yes, HAVE_DGA=no, [ $X_PRE_LIBS -lXext -lX11 $X_EXTRA_LIBS ])
  LIBS=$TMP_SAVE_LIBS
  if [[ "x$HAVE_DGA" = "xno" ]]; then
    echo "Could not find DGA extension, ignoring --enable-dga."
    NR_ERRORS=`expr $NR_ERRORS + 1`
    WANT_DGA=no
  fi
fi

if [[ "x$WANT_VIDMODE" = "xyes" ]]; then
  TMP_SAVE_LIBS=$LIBS
  LIBS="$X_LIBS $LIBS"
  AC_CHECK_LIB(Xxf86vm, XF86VidModeQueryExtension, HAVE_VIDMODE=yes, HAVE_VIDMODE=no, [ $X_PRE_LIBS -lXext -lX11 $X_EXTRA_LIBS ])
  LIBS=$TMP_SAVE_LIBS
  if [[ "x$HAVE_VIDMODE" = "xno" ]]; then
    echo "Could not find VidMode extension, ignoring --enable-vidmode."
    NR_ERRORS=`expr $NR_ERRORS + 1`
    WANT_VIDMODE=no
  fi
fi

dnl Check for X Forms library. Boy is this complicated
dnl Also check for gtk/gdk/glib.
dnl This must also come after the X11 check.
if [[ "x$no_x" = "xyes" ]]; then
  HAVE_XFORMS=no
  HAVE_GTK=no
else
  if [[ "x$ac_cv_header_forms_h" != "xyes" -a "x$ac_cv_header_X11_forms_h" != "xyes" ]]; then
    HAVE_XFORMS=no
  else
    TMP_SAVE_LIBS=$LIBS
    LIBS="$X_LIBS $LIBS -lforms $X_PRE_LIBS -lX11 $X_EXTRA_LIBS -lm"
    AC_CHECK_LIB(forms, fl_library_version, HAVE_XFORMS=yes, HAVE_XFORMS=no)
    LIBS=$TMP_SAVE_LIBS
    if [[ "x$ac_cv_header_forms_h" = "xyes" ]]; then
      FORMS_HEADER=forms.h
    else
      FORMS_HEADER=X11/forms.h
    fi
  fi
  if [[ "x$ac_cv_header_gtk_gtk_h" != "xyes" -o "x$HAVE_PTHREAD_LIB" != "xyes" ]]; then
    HAVE_GTK=no
  else
    TMP_SAVE_LIBS=$LIBS
    dnl The gtk+ UI needs thread support.
    LIBS="$X_LIBS $LIBS -lgtk -lgdk -lglib $X_PRE_LIBS -lX11 -lXext $X_EXTRA_LIBS -lm -pthread"
    if [[ "x$HAVE_POSIX4_LIB" = "xyes" ]]; then
      LIBS="$LIBS -lposix4"
    fi
    AC_CHECK_LIB(gtk, gtk_main, HAVE_GTK=yes, HAVE_GTK=no)
    LIBS=$TMP_SAVE_LIBS    
  fi
fi

if [[ "x$HAVE_XFORMS" = "xyes" ]]; then
  echo '#include "'$FORMS_HEADER\" >conftest.c
  cat >>conftest.c << EOF
int main()
{
  if (fl_library_version(NULL, NULL) == FL_INCLUDE_VERSION
      && FL_INCLUDE_VERSION >= 80)
      printf("OK\n");
return 0;
}
EOF
  $CC conftest.c -c -o conftest.o  $CFLAGS
  $CC conftest.o -o conftest $X_LIBS $LIBS -lforms $X_PRE_LIBS -lX11 $X_EXTRA_LIBS -lm
  ./conftest >conftest.file
  if grep OK conftest.file >/dev/null; then
    echo "X Forms include and library version match."
  else
    echo "Installation problem with the X Forms library, versions don't match!"
    NR_ERRORS=`expr $NR_ERRORS + 1`
    HAVE_XFORMS=no
  fi
fi

dnl If --enable-ui --enable-dga is given, give UI priority.
if [[ "x$WANT_UI" = "xyes" -a "x$WANT_DGA" = "xyes" ]]; then
  echo "Can't use a GUI with DGA - disabling DGA."
  NR_ERRORS=`expr $NR_ERRORS + 1`
  WAMT_DGA=no
  WANT_VIDMODE=no
fi

dnl Without explicit --enable-ui, silently turn off the UI if DGA is wanted.
if [[ "x$WANT_DGA" = "xyes" ]]; then
  WANT_UI=no
  WANT_XFGUI=no
  WANT_TKGUI=no
fi

dnl The GUIs need stuff...
if [[ "x$WANT_XFGUI" = "xyes" ]]; then
  if [[ "x$WANT_TKGUI" = "yes" ]]; then
    echo "You can't have both the X Forms GUI and the Tk GUI!"
    NR_ERRORS=`expr $NR_ERRORS + 1`
    WANT_TKGUI=no    
  fi
  if [[ "x$HAVE_XFORMS" = "xno" ]]; then
    echo "Can't use the X Forms library; X Forms GUI disabled."
    NR_ERRORS=`expr $NR_ERRORS + 1`
    WANT_XFGUI=no
  fi
fi

if [[ "x$HAVE_TKGUI" = "xyes" ]]; then
  if [[ "x$HAVE_WISH40" != "xyes" ]]; then
    echo "Can't find wish4.0; Tk GUI disabled."
    NR_ERRORS=`expr $NR_ERRORS + 1`
    WANT_TKGUI=no
  fi
fi

dnl See if we can at least compile SHM support

SHM_SUPPORT_LINKS=0
if [[ "x$no_x" != "xyes" -a "x$WANT_DGA" != "xyes" -a "x$ac_cv_header_sys_ipc_h" = "xyes" -a "x$ac_cv_header_sys_shm_h" = "xyes" ]]; then
  AC_MSG_CHECKING(whether the X11 MIT-SHM extension can be compiled in)
  TMP_SAVE_CFLAGS=$CFLAGS
  TMP_SAVE_LIBS=$LIBS
  CFLAGS="$CFLAGS $X_CFLAGS"
  LIBS="$X_LIBS $LIBS $X_PRE_LIBS -lX11 -lXext $X_EXTRA_LIBS"
  AC_TRY_LINK([
#include "confdefs.h"
#ifdef HAVE_SYS_TYPES_H
#include <sys/types.h>
#endif
#include <X11/Xlib.h>
#include <X11/Xutil.h>
#include <X11/keysym.h>
#include <X11/cursorfont.h>
#include <sys/ipc.h>
#include <sys/shm.h>
#include <X11/extensions/XShm.h>],[
static XShmSegmentInfo shminfo;
static Display *display;
void foo(void)
{
XShmAttach(display, &shminfo);
XSync(display,0);
shmctl(shminfo.shmid, IPC_RMID, 0);
}],
SHM_SUPPORT_LINKS=1
AC_MSG_RESULT(yes),
SHM_SUPPORT_LINKS=0
AC_MSG_RESULT(no))
  CFLAGS=$TMP_SAVE_CFLAGS
  LIBS=$TMP_SAVE_LIBS
fi

MATHLIB=-lm
DEBUGOBJS="debug.o"

AC_MSG_CHECKING(which target to use)

if [[ "x$HAVE_BEOS" = "xyes" ]]; then
  AC_MSG_RESULT(BeOS)
  MATHLIB=
  TARGET=beos
  TARGETDEP=t-beos.h
  GFXOBJS=osdep/beos.o
  GUIOBJS=nogui.o
  ac_cv_c_inline=
else if [[ "x$HAVE_POS" = "xyes" ]]; then
  AC_MSG_RESULT(p.OS)
  TARGET=p_os
  TARGETDEP=t-pos.h
  GFXOBJS="osdep/pos-win.o osdep/pos-disk.o osdep/pos-rexx.o"
  GUIOBJS="osdep/pos-gui.o"
else if [[ "x$HAVE_AMIGA_LIB" = "xyes" ]]; then
  AC_MSG_RESULT(AmigaOS)
  TARGET=amigaos
  TARGETDEP=t-amiga.h
  GFXOBJS="osdep/ami-win.o osdep/ami-disk.o osdep/ami-rexx.o osdep/ami-appw.o"
  GUIOBJS="osdep/ami-gui.o"
else if [[ "x$HAVE_NEXT_LIB" = "xyes" ]]; then
  AC_MSG_RESULT(NeXTStep)
  MATHLIB=
  TARGET=next
  GFXOBJS="NeXTwin.o"
  GUIOBJS=
  TARGETDEP=t-next.h
  LIBRARIES="-sectcreate __ICON __header ../Uae.app/Uae.iconheader -segprot __ICON r r -sectcreate __ICON app ../Uae.app/Uae.tiff -lMedia_s -lNeXT_s"
else
  dnl Unix system
  dnl If we don't have X, see what else we have and/or want.

  if [[ "x$no_x" = "xyes" ]]; then
    if [[ "x$WANT_SVGALIB" != "xyes" -a "x$WANT_GGI" != "xyes" -a "x$WANT_ASCIIART" != "xyes" ]]; then
      if [[ "x$WANT_SVGALIB" != "xno" -a "x$HAVE_SVGA_LIB" = "xyes" ]]; then
        WANT_SVGALIB=yes
      else if [[ "x$WANT_GGI" != "xno" -a "x$HAVE_GGI_LIB" = "xyes" ]]; then
        WANT_GGI=yes
      else if [[ "x$WANT_ASCIIART" != "xno" -a "x$HAVE_NCURSES_LIB" = "xyes" ]]; then
        WANT_ASCIIART=yes
      fi
      fi
      fi
    fi
  fi

  if [[ "x$WANT_GGI" = "xyes" ]]; then
    AC_MSG_RESULT(GGI)
    TARGET=ggilib
    TARGETDEP=t-ggi.h
    WANT_NCURSES_UI=yes
    GFXOBJS=ggi.o
    LIBRARIES="-ldl -lggi"
    LDFLAGS="-rdynamic $LDFLAGS"
  else if [[ "x$WANT_SVGALIB" = "xyes" ]]; then
    AC_MSG_RESULT(SVGAlib)
    TARGET=svgalib
    TARGETDEP=t-svgalib.h
    GFXOBJS=svga.o
    LIBRARIES="-lvga"
    WANT_NCURSES_UI=yes
  else if [[ "x$WANT_ASCIIART" = "xyes" ]]; then
    AC_MSG_RESULT(ncurses ASCII art)
    TARGET=asciiart
    TARGETDEP=t-ascii.h
    GFXOBJS="ncurses.o"
    GUIOBJS="tui.o svgancui.o"
    LIBRARIES="-lncurses"
  else if [[ "x$no_x" = "xyes" ]]; then
    AC_MSG_RESULT(Ummm....)
    echo "Fatal error: No graphics system found, don't know what target to use."
    exit 1
  else
    AC_MSG_RESULT(X11)
    TARGET=x11
    TARGETDEP=t-x11.h
    GFXOBJS=xwin.o
    GUIOBJS=nogui.o

    LIBRARIES="$X_LIBS $X_PRE_LIBS"
    dnl If we still think we want DGA, set it up.
    if [[ "x$WANT_DGA" = "xyes" ]]; then
      LIBRARIES="$LIBRARIES -lXxf86dga"
      X_CFLAGS="$X_CFLAGS -DUSE_DGA_EXTENSION"
      if [[ "x$WANT_VIDMODE" = "xyes" ]]; then
        LIBRARIES="$LIBRARIES -lXxf86vm"
	X_CFLAGS="$X_CFLAGS -DUSE_VIDMODE_EXTENSION"
      fi
    fi
    LIBRARIES="$LIBRARIES -lXext -lX11 $X_EXTRA_LIBS"

    if [[ "x$WANT_UI" != "xno" ]]; then
      if [[ "x$WANT_XFGUI" = "xyes" ]]; then
        echo "Using XForms GUI."
	LIBRARIES="$LIBRARIES -lforms"
	ADDITIONAL_CFLAGS="$ADDITIONAL_CFLAGS -DUSING_FORMS_GUI"
	GUIOBJS=
	DEBUGOBJS=xdebug.o
      else if [[ "x$WANT_TKGUI" = "xyes" ]]; then
        echo "Using Tcl/Tk GUI."
        ADDITIONAL_CFLAGS="$ADDITIONAL_CFLAGS -DUSING_TCL_GUI"
        GUIOBJS=xui.o
      else
        if [[ "x$HAVE_GTK" != "xyes" ]]; then
	  echo "Did not find gtk+, disabling user interface"
	  if [[ "x$WANT_UI" = "xyes" ]]; then
	    NR_ERRORS=`expr $NR_ERRORS + 1`
	  fi
        else
          echo "Using gtk+ GUI."
	  LIBRARIES="$LIBRARIES -lgtk -lgdk -lglib"
	  NEED_THREAD_SUPPORT=yes
          ADDITIONAL_CFLAGS="$ADDITIONAL_CFLAGS -DUSING_GTK_GUI"
          GUIOBJS=gtkui.o
	fi
      fi
      fi
    fi
  fi
  fi
  fi
  fi
fi
fi
fi
fi

if [[ "x$WANT_NCURSES_UI" = "xyes" ]]; then
  if [[ "x$HAVE_NCURSES_LIB" = "xno" ]]; then
    if [[ "x$WANT_UI" = "xyes" ]]; then
      echo "ncurses is unavailable, can't provide a user interface"
      NR_ERRORS=`expr $NR_ERRORS + 1`      
    fi
    WANT_UI=no
  fi
  if [[ "x$WANT_UI" != "xno" ]]; then
    GUIOBJS="tui.o svgancui.o"
    LIBRARIES="$LIBRARIES -lncurses"
    ADDITIONAL_CFLAGS="$ADDITIONAL_CFLAGS -DUSING_CURSES_UI"
    if [[ "x$ac_cv_header_ncurses_h" = "xno" ]]; then
      echo "Found libncurses, but no ncurses.h. This is normal with recent versions"
      echo "of ncurses, but it might indicate a problem with older versions."
      NR_WARNINGS=`expr $NR_WARNINGS + 1`
    fi
  else
    GUIOBJS=nogui.o
  fi
fi
 
GFXOBJS="$GFXOBJS $GUIOBJS"
 
dnl Find out some things about the system 
dnl  - whether we have GCC 2.7 or better.
dnl  - what CPU we have (to use some assembly hacks on the x86)
dnl  - whether we are on a Linux system
dnl  - whether that is an ELF system
dnl  - whether it's running glibc-2.0

MACHDEP=md-generic
OSDEP=od-generic
THREADDEP=td-none
SOUNDDEP=od-generic

USE_PENGUINS=no
USE_THREADS=no
USE_SOUND=no
USE_FILE_SOUND=no

HAVEELF=no
HAVELINUX=no
HAVEGCC27=no
HAVEI386=no
HAVE68K=no
HAVEGLIBC2=no

ASMOBJS=
CPUOBJS="cpu0.o cpu1.o cpu2.o cpu3.o cpu4.o cpu5.o cpu6.o cpu7.o cpu8.o cpu9.o cpuA.o cpuB.o cpuC.o cpuD.o cpuE.o cpuF.o"

AC_MSG_CHECKING(for GCC 2.7 or higher)
cat >conftest.c << EOF
int main()
{
#if defined(__GNUC__) && defined(__GNUC_MINOR__)
#if __GNUC__ > 2 || __GNUC_MINOR__ > 6
printf("GNU\n");
#endif
#endif
return 0;
}
EOF

$CC conftest.c -c -o conftest.o
$CC conftest.o -o conftest
./conftest >conftest.file
if grep GNU conftest.file >/dev/null; then
  AC_MSG_RESULT(yes)
  HAVEGCC27=yes
else
  AC_MSG_RESULT(no)
  if [[ "x$CC" = "xgcc" ]]; then
    echo "I suggest you upgrade to at least version 2.7 of GCC"
  else
    echo "Couldn't find GCC. UAE may or may not compile and run correctly."
    NR_WARNINGS=`expr $NR_WARNINGS + 1`
  fi
fi

AC_MSG_CHECKING(for glibc-2.0 or higher)
if [[ "x$ac_cv_header_features_h" = "xyes" ]]; then
  cat >conftest.c << EOF
#include <features.h>
int main()
{
#if defined(__GLIBC__)
#if __GLIBC__ >= 2
printf("GNU\n");
#endif
#endif
return 0;
}
EOF

  $CC conftest.c -c -o conftest.o
  $CC conftest.o -o conftest
  ./conftest >conftest.file
  if grep GNU conftest.file >/dev/null; then
    HAVEGLIBC2=yes
    AC_MSG_RESULT(yes)
  else
    AC_MSG_RESULT(no)
  fi
else
  AC_MSG_RESULT(no)
fi

if [[ "x$CC" = "xgcc" ]]; then
  WARNING_CFLAGS="-Wall -Wno-unused -Wno-format -W -Wmissing-prototypes -Wstrict-prototypes"
  OPTIMIZE_CFLAGS="-O3 -fomit-frame-pointer"
  dnl Not nice, but needed to turn off -g
  CFLAGS=
fi

if [[ "x$DO_PROFILING" = "xyes" ]]; then
  if [[ "x$CC" = "xgcc" ]]; then
    OPTIMIZE_CFLAGS="-O"
    DEBUG_CFLAGS="-g -fno-inline -fno-omit-frame-pointer -pg -DUSE_PROFILING"
    LDFLAGS="-pg"
  else
    DO_PROFILING=no
    echo "Don't know how to set up profiling for your compiler."
    NR_ERRORS=`expr $NR_ERRORS + 1`
  fi
fi

dnl ????What????
if [[ "x$TARGET" = "xggi" ]]; then
  OPTIMIZE_CFLAGS=
fi

CFLAGS="$OPTIMIZE_CFLAGS $DEBUG_CFLAGS $WARNING_CFLAGS $CFLAGS $ADDITIONAL_CFLAGS"

if [[ "x$HAVEGCC27" = "xyes" ]]; then
  CFLAGS="$CFLAGS -DGCCCONSTFUNC=\"__attribute__((const))\""
else
  CFLAGS="$CFLAGS -DGCCCONSTFUNC="
fi

cat >conftest.c << EOF
int main()
{
#ifdef __i386__
printf("386\n");
#elif defined(__mc68000__)
printf("68k\n");
#endif
return 0;
}
EOF

$CC conftest.c -c -o conftest.o
$CC conftest.o -o conftest
./conftest >conftest.file
if grep 386 conftest.file >/dev/null; then
  HAVEI386=yes
  echo "You seem to be using a x86 CPU (UAE will require a 486 to run)"
else if grep 68k conftest.file >/dev/null; then
  HAVE68K=yes
  echo "You seem to be using a 68k CPU."
else
  echo "No special hacks for your CPU, sorry."
fi; fi

rm -f conftest*

if MACHINE=`uname -a 2>/dev/null`; then
  case "$MACHINE" in
  Linux*)
    HAVELINUX=yes
    ;;
  esac
fi

dnl X86.S needs to know whether it needs to add underscores to symbols.
dnl This might break some obscure systems which don't have ELF but don't
dnl add underscores either.

AC_MSG_CHECKING(whether we are on an ELF system)

if [[ "x$SYSTEM_IS_ELF" = "xdunno" ]]; then
  cat >conftest.c << EOF
int main() { return 0; }
EOF

  gcc conftest.c -o conftest
  if [[ "x$FILEPRG" = "xnot-found" ]]; then
    cp conftest conftest.file
  else
    $FILEPRG conftest >conftest.file
  fi
  if grep ELF conftest.file >/dev/null; then
    HAVEELF=yes
    AC_MSG_RESULT(yes)
  else
    AC_MSG_RESULT(no)
  fi
else
  AC_MSG_RESULT(overriden: $SYSTEM_IS_ELF)
  HAVEELF=$SYSTEM_IS_ELF
fi

rm -f conftest*

AC_ARG_ENABLE(threads,[  --enable-threads        Enable filesystem thread support],[USE_THREADS=$enableval],[])
AC_ARG_ENABLE(penguins,[  --enable-penguins       Enable threads that only make sense on SMP machines],[USE_PENGUINS=$enableval],[])

if [[ "x$NEED_THREAD_SUPPORT" = "xyes" ]]; then
  if [[ "x$USE_THREADS" != "xyes" -a "x$USE_PENGUINS" != "xyes" ]]; then
    echo "The gtk+ GUI needs threads; enabling thread support."
  fi
fi

if [[ "x$USE_THREADS" = "xyes" -o "x$USE_PENGUINS" = "xyes" -o "x$NEED_THREAD_SUPPORT" = "xyes" ]]; then
  if [[ "x$HAVE_PTHREAD_LIB" = "xyes" ]]; then
    THREADDEP=td-posix
    CFLAGS="$CFLAGS -DSUPPORT_THREADS -D_REENTRANT"
    LIBS="$LIBS -lpthread"
    if [[ "x$HAVE_POSIX4_LIB" = "xyes" ]]; then
      LIBS="$LIBS -lposix4"
    fi

    if [[ "x$USE_THREADS" = "xyes" ]]; then    
      CFLAGS="$CFLAGS -DUAE_FILESYS_THREADS"
    fi
    if [[ "x$USE_PENGUINS" = "xyes" ]]; then
      CFLAGS="$CFLAGS -DSUPPORT_PENGUINS"
    fi

    if [[ "x$HAVELINUX" = "xno" -o "x$HAVEGLIBC2" = "xno" ]]; then
      echo "Thread support has only been tested on Linux systems with glibc-2.0"
      NR_WARNINGS=`expr $NR_WARNINGS + 1`
    fi
    if [[ "x$TARGET" = "xsvgalib" ]]; then
      echo "If you didn't compile a fixed version of SVGAlib then thread support"
      echo "in UAE will lock your machine real hard."
      NR_WARNINGS=`expr $NR_WARNINGS + 1`
    fi
  else
    echo "You tried to enable threads, but I couldn't find a thread library!"
    NR_ERRORS=`expr $NR_ERRORS + 1`
  fi
fi

dnl See if we have something better than GCC 2.7.

if [[ "x$HAVEGCC27" = "xyes" -a "x$HAVEI386" = "xyes" ]]; then
  SAVECFLAGS=$CFLAGS
  CFLAGS="$CFLAGS -mno-schedule-prologue"
  AC_TRY_COMPILE(,int main(){return 0;}, NO_SCHED_CFLAGS="-mno-schedule-prologue")
  CFLAGS=$SAVECFLAGS
fi

dnl If GCC supports exceptions, we don't want them.

if [[ "x$HAVEGCC27" = "xyes" -a "x$HAVEI386" = "xyes" ]]; then
  SAVECFLAGS=$CFLAGS
  CFLAGS="$CFLAGS -fno-exceptions"
  NOEXCEPTIONS=no
  AC_TRY_COMPILE(,int main(){return 0;}, NOEXCEPTIONS=yes)
  if [[ "x$NOEXCEPTIONS" = "xno" ]]; then
    CFLAGS=$SAVECFLAGS
  fi
fi


dnl Set up the link to the appropriate machdep directory and select something
dnl for the REGPARAM define.

if [[ "x$HAVEGCC27" = "xyes" -a "x$HAVEI386" = "xyes" -a "x$DO_PROFILING" = "xno" ]]; then
  MACHDEP=md-i386-gcc
  dnl strength-reduce is turned off not because of paranoia, but because it
  dnl actually makes the code worse in some cases on the i386 (generates too
  dnl many registers, which all end up on the stack).
  CFLAGS="$CFLAGS -DX86_ASSEMBLY -fno-strength-reduce -DREGPARAM=\"__attribute__((regparm(3)))\""
  ASMOBJS=$MACHDEP/X86.o
  CPUOBJS="cpu_f0.o cpu_f1.o cpu_f2.o cpu_f3.o cpu_f4.o cpu_f5.o cpu_f6.o cpu_f7.o cpu_f8.o cpu_f9.o cpu_fA.o cpu_fB.o cpu_fC.o cpu_fD.o cpu_fE.o cpu_fF.o"
else if [[ "x$TARGET" = "xp_os" ]]; then
  CPU=`uname -m`
  if [[ "x$CPU" = "xm68k" ]]; then
     MACHDEP=md-68k
     CFLAGS="$CFLAGS -DREGPARAM=\"__attribute__((regparm(4)))\" -DM68K_FLAG_OPT=1"
  else if [[ "x$CPU" = "xppc" ]]; then
     MACHDEP=md-ppc
     CFLAGS="$CFLAGS -DREGPARAM="
  else if [[ "x$CPU" = "xi386" ]]; then
     MACHDEP=md-i386-gcc
     CFLAGS="$CFLAGS -DX86_ASSEMBLY -fno-strength-reduce -DREGPARAM=\"__attribute__((regparm(3)))\""
  else
     echo "Unsupported CPU: $CPU!"
     exit 5
  fi  
  fi
  fi
  CFLAGS="$CFLAGS -nostdinc -I/gg/include -I/p/../inc -D__POS__"
  OSDEP=od-pos
  CPUOBJS="cpu_f0.o cpu_f1.o cpu_f2.o cpu_f3.o cpu_f4.o cpu_f5.o cpu_f6.o cpu_f7.o cpu_f8.o cpu_f9.o cpu_fA.o cpu_fB.o cpu_fC.o cpu_fD.o cpu_fE.o cpu_fF.o"
else if [[ "x$HAVEGCC27" = "xyes" -a "x$HAVE68K" = "xyes" -a "x$TARGET" = "xamigaos" ]]; then
  MACHDEP=md-68k
  OSDEP=od-amiga
  CFLAGS="$CFLAGS -DREGPARAM=\"__attribute__((regparm(4)))\" -DM68K_FLAG_OPT=1"
  CPUOBJS="cpu_f0.o cpu_f1.o cpu_f2.o cpu_f3.o cpu_f4.o cpu_f5.o cpu_f6.o cpu_f7.o cpu_f8.o cpu_f9.o cpu_fA.o cpu_fB.o cpu_fC.o cpu_fD.o cpu_fE.o cpu_fF.o"
else if [[ "x$TARGET" = "xamigaos" ]]; then 
  dnl: sam: amigaos without gcc 
  MACHDEP=md-generic
  OSDEP=od-amiga
  CFLAGS="$CFLAGS -DREGPARAM="
else if [[ "x$HAVEGCC27" = "xyes" -a "x$HAVE68K" = "xyes" -a "x$DO_PROFILING" = "xno" ]]; then
  dnl sam: This is for linux 68k (REGPARAM is not used under linux)
  MACHDEP=md-68k
  CFLAGS="$CFLAGS -DM68K_FLAG_OPT=1 -DREGPARAM="
  CPUOBJS="cpu_f0.o cpu_f1.o cpu_f2.o cpu_f3.o cpu_f4.o cpu_f5.o cpu_f6.o cpu_f7.o cpu_f8.o cpu_f9.o cpu_fA.o cpu_fB.o cpu_fC.o cpu_fD.o cpu_fE.o cpu_fF.o"
else if [[ "x$TARGET" = "xbeos" ]]; then
  MACHDEP=md-ppc
  CFLAGS="$CFLAGS -DREGPARAM="
  OSDEP=od-beos
else
  CFLAGS="$CFLAGS -DREGPARAM="
fi
fi
fi
fi
fi
fi

if [[ "x$HAVELINUX" = "xyes" ]]; then
  OSDEP=od-linux
  if [[ "x$HAVEGLIBC2" = "xyes" -a "x$HAVEI386" = "xyes" ]]; then
    CFLAGS="$CFLAGS -DHAVE_GLIBC_2_LINUX"
  fi
fi

if [[ "x$TARGET" = "xx11" -o "x$TARGET" = "xsvgalib" -o "x$TARGET" = "xamigaos" \
     -o "x$TARGET" = "xbeos" -o "x$TARGET" = "xasciiart" -o "x$TARGET" = "xggi" -o "x$TARGET" = "xp_os" ]]; then
  dnl On Unix, BeOS and AmigaOS system, zfile is supposed to work. Dunno about others.
  CFLAGS="$CFLAGS -DUSE_ZFILE"
fi

HAVE_USS_SOUND=no
if [[ "x$ac_cv_header_sys_soundcard_h" = "xyes" -o "x$ac_cv_header_machine_soundcard_h" = "xyes" ]]; then
  dnl Avoid surprises
  AC_MSG_CHECKING(whether sys/soundcard.h or machine/soundcard.h works)
  AC_TRY_COMPILE([
#include "confdefs.h"
#ifdef HAVE_SYS_SOUNDCARD_H
#include <sys/soundcard.h>
#else
#include <machine/soundcard.h>
#endif
#include <sys/ioctl.h>
],
[int soundfd; ioctl (soundfd, SNDCTL_DSP_GETFMTS, 0);],
AC_MSG_RESULT(yes)
HAVE_USS_SOUND=yes,
AC_MSG_RESULT(no))
fi

AC_MSG_CHECKING(which sound system to use)
AC_ARG_ENABLE(sound,[  --enable-sound          Enable sound support],[USE_SOUND=$enableval],[])
AC_ARG_ENABLE(file-sound,[  --enable-file-sound          Enable sound output to file],[USE_FILE_SOUND=$enableval],[])

if [[ "x$USE_FILE_SOUND" = "xyes" ]]; then
  USE_SOUND=yes
fi

if [[ "x$USE_SOUND" = "xno" ]]; then
  AC_MSG_RESULT(sound not enabled)
else
  if [[ "x$USE_FILE_SOUND" = "xyes" ]]; then
    AC_MSG_RESULT(file output)
    SOUNDDEP=sd-file
    USE_SOUND=yes  
  else if [[ "x$HAVE_USS_SOUND" = "xyes" ]]; then
    AC_MSG_RESULT(USS)
    SOUNDDEP=sd-uss
    USE_SOUND=yes
  else if [[ "x$ac_cv_header_sys_audioio_h" = "xyes" -o "x$ac_cv_header_sun_audioio_h" = "xyes" ]]; then
    AC_MSG_RESULT(Solaris)
    SOUNDDEP=sd-solaris
    USE_SOUND=yes
  else if [[ "x$HAVE_AF_LIB" = "xyes" ]]; then
    AC_MSG_RESULT(AF sound)
    SOUNDDEP=sd-af
    USE_SOUND=yes
  else if [[ "x$TARGET" = "xp_os" ]]; then
    AC_MSG_RESULT(pAudio.device)
    SOUNDDEP=od-pos
    USE_SOUND=yes
  else if [[ "x$TARGET" = "xamigaos" ]]; then
    AC_MSG_RESULT(Amiga audio.device)
    SOUNDDEP=od-amiga
    USE_SOUND=yes
  else if [[ "x$TARGET" = "xbeos" ]]; then
    AC_MSG_RESULT(BeOS sound)
    SOUNDDEP=od-beos
    USE_SOUND=yes
  else
    echo "no known sound system found"
    NR_ERRORS=`expr $NR_ERRORS + 1`
  fi
  fi
  fi
  fi
  fi
  fi
  fi
fi

rm -f src/machdep
rm -f src/osdep
rm -f src/threaddep
rm -f src/sounddep
rm -f src/target.h

ln -s $MACHDEP src/machdep
ln -s $OSDEP src/osdep
ln -s $THREADDEP src/threaddep
ln -s $SOUNDDEP src/sounddep
ln -s targets/$TARGETDEP src/target.h

if [[ "x$TARGET" = "xamigaos" -o "x$TARGET" = "xp_os" ]]; then
  dnl Determine the cpu-type
  AC_MSG_CHECKING(which CPU to use)
  cpu=`cpu | cut -d' ' -f2`
  AC_MSG_RESULT($cpu)
  CFLAGS="$CFLAGS -m$cpu"

  dnl Is that correct for the fpu ?
  AC_MSG_CHECKING(which FPU to use)
  fpu=`cpu | cut -d' ' -f3 | grep '^6888[12]$'`
  if [[ "x$fpu" != "x" ]]; then
    dnl gcc only knows about 68881
    AC_MSG_RESULT(68881)
    CFLAGS="$CFLAGS -m68881"
  else
    AC_MSG_RESULT(none)
  fi
fi
 
AC_SUBST(ac_cv_c_inline)
AC_SUBST(NO_SCHED_CFLAGS)
AC_SUBST(STATFS_NO_ARGS)
AC_SUBST(BROKEN_JOYSTICK_H)
AC_SUBST(OLD_JOYSTICK_H)
AC_SUBST(STATBUF_BAVAIL)
AC_SUBST(LIBRARIES)
AC_SUBST(TARGET)
AC_SUBST(GFXOBJS)
AC_SUBST(ASMOBJS)
AC_SUBST(CPUOBJS)
AC_SUBST(DEBUGOBJS)
AC_SUBST(SET_MAKE)
AC_SUBST(MATHLIB)
if [[ "x$FORMS_HEADER" = "xforms.h" ]]; then
  FORMS_H_VARIANT=0
else
  FORMS_H_VARIANT=1
fi
AC_SUBST(FORMS_H_VARIANT)
AC_SUBST(SHM_SUPPORT_LINKS)
AC_SUBST(top_srcdir)

AC_OUTPUT(src/Makefile Makefile)
if [[ "x$DO_PROFILING" = "xyes" ]]; then
  echo "Building a profiling version of UAE (select this option only if you know"
  echo "what you are doing)"
fi

echo
echo
if [[ "x$NR_ERRORS" = "x0" ]]; then
  if [[ "x$NR_WARNINGS" = "x0" ]]; then
    echo "Configuration was successful!"
  else
    echo "There were $NR_WARNINGS warnings. That is usually harmless, but read the output"
    echo "from configure carefully if you run into problems."
  fi
else
  echo "There were $NR_ERRORS errors. UAE may still build and run cleanly, but you may"
  echo "not get all the features you asked for."
fi
echo