src/Unix/configure.in

dnl Process this file with autoconf to produce a configure script.
dnl Written in 2002 by Christian Bauer

AC_INIT(main_unix.cpp)
AC_PREREQ(2.12)
AC_CONFIG_HEADER(config.h)

dnl Options.
AC_ARG_ENABLE(ppc-emulator, [  --enable-ppc-emulator   use the selected PowerPC emulator [default=auto]], [WANT_EMULATED_PPC=$enableval], [WANT_EMULATED_PPC=auto])
AC_ARG_ENABLE(xf86-dga,     [  --enable-xf86-dga       use the XFree86 DGA extension [default=yes]], [WANT_XF86_DGA=$enableval], [WANT_XF86_DGA=yes])
AC_ARG_ENABLE(xf86-vidmode, [  --enable-xf86-vidmode   use the XFree86 VidMode extension [default=yes]], [WANT_XF86_VIDMODE=$enableval], [WANT_XF86_VIDMODE=yes])
AC_ARG_ENABLE(vosf,         [  --enable-vosf           enable video on SEGV signals [default=yes]], [WANT_VOSF=$enableval], [WANT_VOSF=yes])
AC_ARG_WITH(esd,            [  --with-esd              support ESD for sound under Linux/FreeBSD [default=yes]], [WANT_ESD=$withval], [WANT_ESD=yes])
AC_ARG_WITH(gtk,            [  --with-gtk              use GTK user interface [default=yes]], [WANT_GTK=$withval], [WANT_GTK=yes])
AC_ARG_WITH(mon,            [  --with-mon              use mon as debugger [default=yes]], [WANT_MON=$withval], [WANT_MON=yes])

dnl Checks for programs.
AC_PROG_CC
AC_PROG_CPP
AC_PROG_CXX
AC_PROG_MAKE_SET
AC_PROG_INSTALL

dnl Check for PowerPC target CPU.
HAVE_PPC=no
AC_MSG_CHECKING(for PowerPC target CPU)
AC_EGREP_CPP(yes,
[
#ifdef __powerpc__
  yes
#endif
], [AC_MSG_RESULT(yes); HAVE_PPC=yes], AC_MSG_RESULT(no))

dnl We use native CPU if possible.
EMULATED_PPC=yes
case $WANT_EMULATED_PPC in
  auto) [[ "x$HAVE_PPC" = "xyes" ]] && EMULATED_PPC=no;;
  no)   EMULATED_PPC=no;;
esac
if [[ "x$EMULATED_PPC" = "xyes" ]]; then
  AC_DEFINE(EMULATED_PPC)
fi

dnl We use mon if possible.
MONSRCS=
if [[ "x$WANT_MON" = "xyes" ]]; then
  AC_MSG_CHECKING(for mon)
  mon_srcdir=../../../mon/src
  if grep mon_init $mon_srcdir/mon.h >/dev/null 2>/dev/null; then
    AC_MSG_RESULT(yes)
    AC_DEFINE(ENABLE_MON)
    MONSRCS="$mon_srcdir/mon.cpp $mon_srcdir/mon_6502.cpp $mon_srcdir/mon_z80.cpp $mon_srcdir/mon_cmd.cpp $mon_srcdir/mon_lowmem.cpp $mon_srcdir/mon_disass.cpp $mon_srcdir/mon_ppc.cpp $mon_srcdir/disass/floatformat.c $mon_srcdir/disass/i386-dis.c $mon_srcdir/disass/m68k-dis.c $mon_srcdir/disass/m68k-opc.c"
    CXXFLAGS="$CXXFLAGS -I$mon_srcdir -I$mon_srcdir/disass"
    AC_CHECK_LIB(ncurses, tgetent, ,
      AC_CHECK_LIB(termcap, tgetent, ,
        AC_CHECK_LIB(termlib, tgetent, ,
          AC_CHECK_LIB(terminfo, tgetent, ,
            AC_CHECK_LIB(Hcurses, tgetent, ,
              AC_CHECK_LIB(curses, tgetent))))))
    AC_CHECK_LIB(readline, readline)
    AC_CHECK_HEADERS(readline.h history.h readline/readline.h readline/history.h)
  else
    AC_MSG_RESULT(no)
    AC_MSG_WARN([Could not find mon, ignoring --with-mon.])
    WANT_MON=no
  fi
fi

dnl Checks for libraries.
AC_CHECK_LIB(posix4, sem_init)

dnl We need X11.
AC_PATH_XTRA
if [[ "x$no_x" = "xyes" ]]; then
  AC_MSG_ERROR([You need X11 to run SheepShaver.])
fi
CFLAGS="$CFLAGS $X_CFLAGS"
CXXFLAGS="$CXXFLAGS $X_CFLAGS"
LIBS="$LIBS $X_PRE_LIBS $X_LIBS -lX11 -lXext $X_EXTRA_LIBS"

dnl We need pthreads on non-PowerPC systems. Try libpthread first, then libc_r (FreeBSD), then PTL.
HAVE_PTHREADS=yes
if [[ "x$EMULATED_PPC" = "xyes" ]]; then
  AC_CHECK_LIB(pthread, pthread_create, , [
    AC_CHECK_LIB(c_r, pthread_create, , [
      AC_CHECK_LIB(PTL, pthread_create, , [
        AC_MSG_ERROR([You need pthreads to run Basilisk II.])
      ])
    ])
  ])
  AC_CHECK_FUNCS(pthread_cancel)
fi

dnl If POSIX.4 semaphores are not available, we emulate them with pthread mutexes.
SEMSRC=
AC_CHECK_FUNCS(sem_init, , [
  if test "x$HAVE_PTHREADS" = "xyes"; then
    SEMSRC=posix_sem.cpp
  fi
])

dnl We use XFree86 DGA if possible.
if [[ "x$WANT_XF86_DGA" = "xyes" ]]; then
  AC_CHECK_LIB(Xxf86dga, XF86DGAQueryExtension, [
    AC_DEFINE(ENABLE_XF86_DGA)
    LIBS="$LIBS -lXxf86dga"
  ], [
    AC_MSG_WARN([Could not find XFree86 DGA extension, ignoring --enable-xf86-dga.])
    WANT_XF86_DGA=no
  ])
fi

dnl We use XFree86 VidMode if possible.
if [[ "x$WANT_XF86_VIDMODE" = "xyes" ]]; then
  AC_CHECK_LIB(Xxf86vm, XF86VidModeQueryExtension, [
    AC_DEFINE(ENABLE_XF86_VIDMODE)
    LIBS="$LIBS -lXxf86vm"
  ], [
    AC_MSG_WARN([Could not find XFree86 VidMode extension, ignoring --enable-xf86-vidmode.])
    WANT_XF86_VIDMODE=no
  ])
fi

dnl We use GTK+ if possible.
UISRCS=
if [[ "x$WANT_GTK" = "xyes" ]]; then
  AM_PATH_GTK(1.2.0, [
    AC_DEFINE(ENABLE_GTK)
    CFLAGS="$CFLAGS $GTK_CFLAGS"
    CXXFLAGS="$CXXFLAGS $GTK_CFLAGS"
    LIBS="$LIBS $GTK_LIBS"
    UISRCS=prefs_editor_gtk.cpp
  ], [
    AC_MSG_WARN([Could not find GTK+, disabling user interface.])
    WANT_GTK=no
  ])
fi

dnl We use ESD if possible.
if [[ "x$WANT_ESD" = "xyes" ]]; then
  AM_PATH_ESD(0.2.8, [
    AC_DEFINE(ENABLE_ESD)
    CFLAGS="$CFLAGS $ESD_CFLAGS"
    CXXFLAGS="$CXXFLAGS $ESD_CFLAGS"
    LIBS="$LIBS $ESD_LIBS"
  ], [
    AC_MSG_WARN([Could not find ESD, disabling ESD support.])
    WANT_ESD=no
  ])
fi

dnl Checks for header files.
AC_HEADER_STDC
AC_HEADER_SYS_WAIT
AC_CHECK_HEADERS(mach/vm_map.h mach/mach_init.h sys/mman.h)
AC_CHECK_HEADERS(sys/time.h sys/times.h)
AC_CHECK_HEADERS(unistd.h fcntl.h byteswap.h)

dnl Checks for typedefs, structures, and compiler characteristics.
AC_C_BIGENDIAN
AC_C_CONST
AC_C_INLINE
AC_CHECK_SIZEOF(short, 2)
AC_CHECK_SIZEOF(int, 4)
AC_CHECK_SIZEOF(long, 4)
AC_CHECK_SIZEOF(long long, 8)
AC_CHECK_SIZEOF(float, 4)
AC_CHECK_SIZEOF(double, 8)
AC_CHECK_SIZEOF(void *, 4)
AC_TYPE_OFF_T
AC_CHECK_TYPE(loff_t, off_t)
AC_TYPE_SIZE_T
AC_TYPE_SIGNAL
AC_HEADER_TIME
AC_STRUCT_TM

dnl Checks for library functions.
AC_CHECK_FUNCS(strdup cfmakeraw)
AC_CHECK_FUNCS(nanosleep clock_gettime timer_create)
AC_CHECK_FUNCS(sigaction signal)
AC_CHECK_FUNCS(mmap mprotect munmap)
AC_CHECK_FUNCS(vm_allocate vm_deallocate vm_protect)

dnl Select system-dependant sources.
if [[ "x$EMULATED_PPC" = "xno" ]]; then
  SYSSRCS="Linux/paranoia.cpp Linux/sheepthreads.c Linux/asm_linux.S"
else
  SYSSRCS="../kpx_cpu/sheepshaver_glue.cpp \
        ../kpx_cpu/src/cpu/ppc/ppc-cpu.cpp \
        ../kpx_cpu/src/cpu/ppc/ppc-decode.cpp \
        ../kpx_cpu/src/cpu/ppc/ppc-execute.cpp"
  CPPFLAGS="$CPPFLAGS -I../kpx_cpu/include -I../kpx_cpu/src"
fi
SYSSRCS="$SYSSRCS $SEMSRCS $UISRCS $MONSRCS"

dnl Define a macro that translates a yesno-variable into a C macro definition
dnl to be put into the config.h file
dnl $1 -- the macro to define
dnl $2 -- the value to translate
dnl $3 -- template name
AC_DEFUN(AC_TRANSLATE_DEFINE, [
    if [[ "x$2" = "xyes" -o "x$2" = "xguessing yes" ]]; then
        AC_DEFINE($1, 1, $3)
    fi
])

dnl Various checks if the system supports vm_allocate() and the like functions.
have_mach_vm=no
if [[ "x$ac_cv_func_vm_allocate" = "xyes" -a "x$ac_cv_func_vm_deallocate" = "xyes" -a \
      "x$ac_cv_func_vm_protect" = "xyes" ]]; then
  have_mach_vm=yes
fi
AC_TRANSLATE_DEFINE(HAVE_MACH_VM, "$have_mach_vm",
  [Define if your system has a working vm_allocate()-based memory allocator.])

dnl Check that vm_allocate(), vm_protect() work
if [[ "x$have_mach_vm" = "xyes" ]]; then

AC_CACHE_CHECK([whether vm_protect works],
  ac_cv_vm_protect_works, [
  AC_LANG_SAVE
  AC_LANG_CPLUSPLUS
  ac_cv_vm_protect_works=yes
  dnl First the tests that should segfault
  for test_def in NONE_READ NONE_WRITE READ_WRITE; do
    AC_TRY_RUN([
      #define CONFIGURE_TEST_VM_MAP
      #define TEST_VM_PROT_$test_def
      #include "vm_alloc.cpp"
    ], ac_cv_vm_protect_works=no, rm -f core,
    dnl When cross-compiling, do not assume anything
    ac_cv_vm_protect_works="guessing no"
    )
  done
  AC_TRY_RUN([
    #define CONFIGURE_TEST_VM_MAP
    #define TEST_VM_PROT_RDWR_WRITE
    #include "vm_alloc.cpp"
  ], , ac_cv_vm_protect_works=no,
  dnl When cross-compiling, do not assume anything
  ac_cv_vm_protect_works="guessing no"
  )
  AC_LANG_RESTORE
  ]
)

dnl Remove support for vm_allocate() if vm_protect() does not work
if [[ "x$have_mach_vm" = "xyes" ]]; then
  case $ac_cv_vm_protect_works in
    *yes) have_mach_vm=yes;;
    *no) have_mach_vm=no;;
  esac
fi
AC_TRANSLATE_DEFINE(HAVE_MACH_VM, "$have_mach_vm",
  [Define if your system has a working vm_allocate()-based memory allocator.])

fi dnl HAVE_MACH_VM

dnl Various checks if the system supports mmap() and the like functions.
dnl ... and Mach memory allocators are not supported
have_mmap_vm=no
if [[ "x$ac_cv_func_mmap" = "xyes" -a "x$ac_cv_func_munmap" = "xyes" -a \
      "x$ac_cv_func_mprotect" = "xyes" ]]; then
  if [[ "x$have_mach_vm" = "xno" ]]; then
    have_mmap_vm=yes
  fi
fi
AC_TRANSLATE_DEFINE(HAVE_MMAP_VM, "$have_mmap_vm",
  [Define if your system has a working mmap()-based memory allocator.])

dnl Check that mmap() and associated functions work.
if [[ "x$have_mmap_vm" = "xyes" ]]; then

dnl Check if we have a working anonymous mmap()
AC_CACHE_CHECK([whether mmap supports MAP_ANON],
  ac_cv_mmap_anon, [
  AC_LANG_SAVE
  AC_LANG_CPLUSPLUS
  AC_TRY_RUN([
    #define HAVE_MMAP_ANON
    #define CONFIGURE_TEST_VM_MAP
    #define TEST_VM_MMAP_ANON
    #include "vm_alloc.cpp"
  ], ac_cv_mmap_anon=yes, ac_cv_mmap_anon=no,
  dnl When cross-compiling, do not assume anything.
  ac_cv_mmap_anon="guessing no"
  )
  AC_LANG_RESTORE
  ]
)
AC_TRANSLATE_DEFINE(HAVE_MMAP_ANON, "$ac_cv_mmap_anon",
  [Define if <sys/mman.h> defines MAP_ANON and mmap()'ing with MAP_ANON works.])

AC_CACHE_CHECK([whether mmap supports MAP_ANONYMOUS],
  ac_cv_mmap_anonymous, [
  AC_LANG_SAVE
  AC_LANG_CPLUSPLUS
  AC_TRY_RUN([
    #define HAVE_MMAP_ANONYMOUS
    #define CONFIGURE_TEST_VM_MAP
    #define TEST_VM_MMAP_ANON
    #include "vm_alloc.cpp"
  ], ac_cv_mmap_anonymous=yes, ac_cv_mmap_anonymous=no,
  dnl When cross-compiling, do not assume anything.
  ac_cv_mmap_anonymous="guessing no"
  )
  AC_LANG_RESTORE
  ]
)
AC_TRANSLATE_DEFINE(HAVE_MMAP_ANONYMOUS, "$ac_cv_mmap_anonymous",
  [Define if <sys/mman.h> defines MAP_ANONYMOUS and mmap()'ing with MAP_ANONYMOUS works.])

AC_CACHE_CHECK([whether mprotect works],
  ac_cv_mprotect_works, [
  AC_LANG_SAVE
  AC_LANG_CPLUSPLUS
  ac_cv_mprotect_works=yes
  dnl First the tests that should segfault
  for test_def in NONE_READ NONE_WRITE READ_WRITE; do
    AC_TRY_RUN([
      #define CONFIGURE_TEST_VM_MAP
      #define TEST_VM_PROT_$test_def
      #include "vm_alloc.cpp"
    ], ac_cv_mprotect_works=no, rm -f core,
    dnl When cross-compiling, do not assume anything
    ac_cv_mprotect_works="guessing no"
    )
  done
  AC_TRY_RUN([
    #define CONFIGURE_TEST_VM_MAP
    #define TEST_VM_PROT_RDWR_WRITE
    #include "vm_alloc.cpp"
  ], , ac_cv_mprotect_works=no,
  dnl When cross-compiling, do not assume anything
  ac_cv_mprotect_works="guessing no"
  )
  AC_LANG_RESTORE
  ]
)

dnl Remove support for mmap() if mprotect() does not work
if [[ "x$have_mmap_vm" = "xyes" ]]; then
  case $ac_cv_mprotect_works in
    *yes) have_mmap_vm=yes;;
    *no) have_mmap_vm=no;;
  esac
fi
AC_TRANSLATE_DEFINE(HAVE_MMAP_VM, $have_mmap_vm,
  [Define if your system has a working mmap()-based memory allocator.])

fi dnl HAVE_MMAP_VM

dnl Check if we can mmap 0x2000 bytes from 0x0000
AC_CACHE_CHECK([whether we can map Low Memory area 0x0000-0x2000],
  ac_cv_can_map_lm, [
  AC_LANG_SAVE
  AC_LANG_CPLUSPLUS
  AC_TRY_RUN([
    #include "vm_alloc.cpp"
    int main(void) { /* returns 0 if we could map the lowmem globals */
      volatile char * lm = 0;
      if (vm_init() < 0) exit(1);
      if (vm_acquire_fixed(0, 0x2000) < 0) exit(1);
      lm[0] = 'z';
      if (vm_release((char *)lm, 0x2000) < 0) exit(1);
      vm_exit(); exit(0);
    }
  ], ac_cv_can_map_lm=yes, ac_cv_can_map_lm=no,
  dnl When cross-compiling, do not assume anything.
  ac_cv_can_map_lm="guessing no"
  )
  AC_LANG_RESTORE
  ]
)

dnl Check signal handlers need to be reinstalled
AC_CACHE_CHECK([whether signal handlers need to be reinstalled],
  ac_cv_signal_need_reinstall, [
  AC_LANG_SAVE
  AC_LANG_CPLUSPLUS
  AC_TRY_RUN([
    #include <stdlib.h>
    #ifdef HAVE_UNISTD_H
    #include <unistd.h>
    #endif
    #include <signal.h>
    static int handled_signal = 0;
    RETSIGTYPE sigusr1_handler(int) { handled_signal++; }
    int main(void) { /* returns 0 if signals need not to be reinstalled */
      signal(SIGUSR1, sigusr1_handler); raise(SIGUSR1); raise(SIGUSR1);
      exit(handled_signal == 2);
    }
  ], ac_cv_signal_need_reinstall=yes, ac_cv_signal_need_reinstall=no,
  dnl When cross-compiling, do not assume anything.
  ac_cv_signal_need_reinstall="guessing yes"
  )
  AC_LANG_RESTORE
  ]
)
AC_TRANSLATE_DEFINE(SIGNAL_NEED_REINSTALL, "$ac_cv_signal_need_reinstall",
  [Define if your system requires signals to be reinstalled.])

dnl Check if sigaction handlers need to be reinstalled
AC_CACHE_CHECK([whether sigaction handlers need to be reinstalled],
  ac_cv_sigaction_need_reinstall, [
  AC_LANG_SAVE
  AC_LANG_CPLUSPLUS
  AC_TRY_RUN([
    #include <stdlib.h>
    #ifdef HAVE_UNISTD_H
    #include <unistd.h>
    #endif
    #include <signal.h>
    static int handled_signal = 0;
    RETSIGTYPE sigusr1_handler(int) { handled_signal++; }
    typedef RETSIGTYPE (*signal_handler)(int);
    static signal_handler mysignal(int sig, signal_handler handler) {
      struct sigaction old_sa;
      struct sigaction new_sa;
      new_sa.sa_handler = handler;
      return ((sigaction(sig,&new_sa,&old_sa) < 0) ? SIG_IGN : old_sa.sa_handler);
    }
    int main(void) { /* returns 0 if signals need not to be reinstalled */
      mysignal(SIGUSR1, sigusr1_handler); raise(SIGUSR1); raise(SIGUSR1);
      exit(handled_signal == 2);
    }
  ], ac_cv_sigaction_need_reinstall=yes, ac_cv_sigaction_need_reinstall=no,
  dnl When cross-compiling, do not assume anything.
  ac_cv_sigaction_need_reinstall="guessing yes"
  )
  AC_LANG_RESTORE
  ]
)
AC_TRANSLATE_DEFINE(SIGACTION_NEED_REINSTALL, "$ac_cv_sigaction_need_reinstall",
  [Define if your system requires sigactions to be reinstalled.])

dnl Check if extended signals are supported.
AC_CACHE_CHECK([whether your system supports extended signal handlers],
  ac_cv_have_extended_signals, [
  AC_LANG_SAVE
  AC_LANG_CPLUSPLUS
  AC_TRY_RUN([
    #define HAVE_SIGINFO_T 1
    #define CONFIGURE_TEST_SIGSEGV_RECOVERY
    #include "vm_alloc.cpp"
    #include "sigsegv.cpp"
  ], ac_cv_have_extended_signals=yes, ac_cv_have_extended_signals=no,
  dnl When cross-compiling, do not assume anything.
  ac_cv_have_extended_signals=no
  )
  AC_LANG_RESTORE
  ]
)
AC_TRANSLATE_DEFINE(HAVE_SIGINFO_T, "$ac_cv_have_extended_signals",
  [Define if your system support extended signals.])

dnl Otherwise, check for subterfuges.
if [[ "x$ac_cv_have_extended_signals" = "xno" ]]; then
  AC_CACHE_CHECK([whether we then have a subterfuge for your system],
  ac_cv_have_sigcontext_hack, [
    AC_LANG_SAVE
    AC_LANG_CPLUSPLUS
    AC_TRY_RUN([
      #define HAVE_SIGCONTEXT_SUBTERFUGE 1
      #define CONFIGURE_TEST_SIGSEGV_RECOVERY
      #include "vm_alloc.cpp"
      #include "sigsegv.cpp"
    ], ac_cv_have_sigcontext_hack=yes, ac_cv_have_sigcontext_hack=no,
    dnl When cross-compiling, do not assume anything.
    ac_cv_have_sigcontext_hack=no
    )
    AC_LANG_RESTORE
  ])
  AC_TRANSLATE_DEFINE(HAVE_SIGCONTEXT_SUBTERFUGE, "$ac_cv_have_sigcontext_hack",
    [Define if we know a hack to replace siginfo_t->si_addr member.])
fi

dnl Check if we can ignore the fault (instruction skipping in SIGSEGV handler)
AC_CACHE_CHECK([whether we can skip instruction in SIGSEGV handler],
  ac_cv_have_skip_instruction, [
  AC_LANG_SAVE
  AC_LANG_CPLUSPLUS
  AC_TRY_RUN([
    #define HAVE_SIGSEGV_SKIP_INSTRUCTION 1
    #define CONFIGURE_TEST_SIGSEGV_RECOVERY
    #include "vm_alloc.cpp"
    #include "sigsegv.cpp"
  ], ac_cv_have_skip_instruction=yes, ac_cv_have_skip_instruction=no,
  dnl When cross-compiling, do not assume anything.
  ac_cv_have_skip_instruction=no
  )
  AC_LANG_RESTORE
  ]
)
AC_TRANSLATE_DEFINE(HAVE_SIGSEGV_SKIP_INSTRUCTION, "$ac_cv_have_skip_instruction",
  [Define if we can ignore the fault (instruction skipping in SIGSEGV handler).])

dnl Can we do Video on SEGV Signals ?
CAN_VOSF=no
if [[ "$ac_cv_have_extended_signals" = "yes" -o "$ac_cv_have_sigcontext_hack" = "yes" ]]; then
  CAN_VOSF=yes
fi

dnl Enable VOSF screen updates with this feature is requested and feasible
if [[ "x$WANT_VOSF" = "xyes" -a "x$CAN_VOSF" = "xyes" ]]; then
    AC_DEFINE(ENABLE_VOSF, 1, [Define if using video enabled on SEGV signals.])
else
    WANT_VOSF=no
fi

dnl Generate Makefile.
AC_SUBST(SYSSRCS)
AC_OUTPUT(Makefile)

dnl Print summary.
echo
echo SheepShaver configuration summary:
echo
echo XFree86 DGA support .............. : $WANT_XF86_DGA
echo XFree86 VidMode support .......... : $WANT_XF86_VIDMODE
echo Using PowerPC emulator ........... : $EMULATED_PPC
echo Enable video on SEGV signals ..... : $WANT_VOSF
echo ESD sound support ................ : $WANT_ESD
echo GTK user interface ............... : $WANT_GTK
echo mon debugger support ............. : $WANT_MON
echo
echo "Configuration done. Now type \"make\"."
Revision:	1.7
Committed:	2003-09-14T22:11:42Z (20 years, 9 months ago) by gbeauche
Branch:	MAIN
Changes since 1.6:	+1 -1 lines
Log Message:	factor out -I usage
#	Content
1	dnl Process this file with autoconf to produce a configure script.
2	dnl Written in 2002 by Christian Bauer
3
4	AC_INIT(main_unix.cpp)
5	AC_PREREQ(2.12)
6	AC_CONFIG_HEADER(config.h)
7
8	dnl Options.
9	AC_ARG_ENABLE(ppc-emulator, [ --enable-ppc-emulator use the selected PowerPC emulator [default=auto]], [WANT_EMULATED_PPC=$enableval], [WANT_EMULATED_PPC=auto])
10	AC_ARG_ENABLE(xf86-dga, [ --enable-xf86-dga use the XFree86 DGA extension [default=yes]], [WANT_XF86_DGA=$enableval], [WANT_XF86_DGA=yes])
11	AC_ARG_ENABLE(xf86-vidmode, [ --enable-xf86-vidmode use the XFree86 VidMode extension [default=yes]], [WANT_XF86_VIDMODE=$enableval], [WANT_XF86_VIDMODE=yes])
12	AC_ARG_ENABLE(vosf, [ --enable-vosf enable video on SEGV signals [default=yes]], [WANT_VOSF=$enableval], [WANT_VOSF=yes])
13	AC_ARG_WITH(esd, [ --with-esd support ESD for sound under Linux/FreeBSD [default=yes]], [WANT_ESD=$withval], [WANT_ESD=yes])
14	AC_ARG_WITH(gtk, [ --with-gtk use GTK user interface [default=yes]], [WANT_GTK=$withval], [WANT_GTK=yes])
15	AC_ARG_WITH(mon, [ --with-mon use mon as debugger [default=yes]], [WANT_MON=$withval], [WANT_MON=yes])
16
17	dnl Checks for programs.
18	AC_PROG_CC
19	AC_PROG_CPP
20	AC_PROG_CXX
21	AC_PROG_MAKE_SET
22	AC_PROG_INSTALL
23
24	dnl Check for PowerPC target CPU.
25	HAVE_PPC=no
26	AC_MSG_CHECKING(for PowerPC target CPU)
27	AC_EGREP_CPP(yes,
28	[
29	#ifdef __powerpc__
30	yes
31	#endif
32	], [AC_MSG_RESULT(yes); HAVE_PPC=yes], AC_MSG_RESULT(no))
33
34	dnl We use native CPU if possible.
35	EMULATED_PPC=yes
36	case $WANT_EMULATED_PPC in
37	auto) [[ "x$HAVE_PPC" = "xyes" ]] && EMULATED_PPC=no;;
38	no) EMULATED_PPC=no;;
39	esac
40	if [[ "x$EMULATED_PPC" = "xyes" ]]; then
41	AC_DEFINE(EMULATED_PPC)
42	fi
43
44	dnl We use mon if possible.
45	MONSRCS=
46	if [[ "x$WANT_MON" = "xyes" ]]; then
47	AC_MSG_CHECKING(for mon)
48	mon_srcdir=../../../mon/src
49	if grep mon_init $mon_srcdir/mon.h >/dev/null 2>/dev/null; then
50	AC_MSG_RESULT(yes)
51	AC_DEFINE(ENABLE_MON)
52	MONSRCS="$mon_srcdir/mon.cpp $mon_srcdir/mon_6502.cpp $mon_srcdir/mon_z80.cpp $mon_srcdir/mon_cmd.cpp $mon_srcdir/mon_lowmem.cpp $mon_srcdir/mon_disass.cpp $mon_srcdir/mon_ppc.cpp $mon_srcdir/disass/floatformat.c $mon_srcdir/disass/i386-dis.c $mon_srcdir/disass/m68k-dis.c $mon_srcdir/disass/m68k-opc.c"
53	CXXFLAGS="$CXXFLAGS -I$mon_srcdir -I$mon_srcdir/disass"
54	AC_CHECK_LIB(ncurses, tgetent, ,
55	AC_CHECK_LIB(termcap, tgetent, ,
56	AC_CHECK_LIB(termlib, tgetent, ,
57	AC_CHECK_LIB(terminfo, tgetent, ,
58	AC_CHECK_LIB(Hcurses, tgetent, ,
59	AC_CHECK_LIB(curses, tgetent))))))
60	AC_CHECK_LIB(readline, readline)
61	AC_CHECK_HEADERS(readline.h history.h readline/readline.h readline/history.h)
62	else
63	AC_MSG_RESULT(no)
64	AC_MSG_WARN([Could not find mon, ignoring --with-mon.])
65	WANT_MON=no
66	fi
67	fi
68
69	dnl Checks for libraries.
70	AC_CHECK_LIB(posix4, sem_init)
71
72	dnl We need X11.
73	AC_PATH_XTRA
74	if [[ "x$no_x" = "xyes" ]]; then
75	AC_MSG_ERROR([You need X11 to run SheepShaver.])
76	fi
77	CFLAGS="$CFLAGS $X_CFLAGS"
78	CXXFLAGS="$CXXFLAGS $X_CFLAGS"
79	LIBS="$LIBS $X_PRE_LIBS $X_LIBS -lX11 -lXext $X_EXTRA_LIBS"
80
81	dnl We need pthreads on non-PowerPC systems. Try libpthread first, then libc_r (FreeBSD), then PTL.
82	HAVE_PTHREADS=yes
83	if [[ "x$EMULATED_PPC" = "xyes" ]]; then
84	AC_CHECK_LIB(pthread, pthread_create, , [
85	AC_CHECK_LIB(c_r, pthread_create, , [
86	AC_CHECK_LIB(PTL, pthread_create, , [
87	AC_MSG_ERROR([You need pthreads to run Basilisk II.])
88	])
89	])
90	])
91	AC_CHECK_FUNCS(pthread_cancel)
92	fi
93
94	dnl If POSIX.4 semaphores are not available, we emulate them with pthread mutexes.
95	SEMSRC=
96	AC_CHECK_FUNCS(sem_init, , [
97	if test "x$HAVE_PTHREADS" = "xyes"; then
98	SEMSRC=posix_sem.cpp
99	fi
100	])
101
102	dnl We use XFree86 DGA if possible.
103	if [[ "x$WANT_XF86_DGA" = "xyes" ]]; then
104	AC_CHECK_LIB(Xxf86dga, XF86DGAQueryExtension, [
105	AC_DEFINE(ENABLE_XF86_DGA)
106	LIBS="$LIBS -lXxf86dga"
107	], [
108	AC_MSG_WARN([Could not find XFree86 DGA extension, ignoring --enable-xf86-dga.])
109	WANT_XF86_DGA=no
110	])
111	fi
112
113	dnl We use XFree86 VidMode if possible.
114	if [[ "x$WANT_XF86_VIDMODE" = "xyes" ]]; then
115	AC_CHECK_LIB(Xxf86vm, XF86VidModeQueryExtension, [
116	AC_DEFINE(ENABLE_XF86_VIDMODE)
117	LIBS="$LIBS -lXxf86vm"
118	], [
119	AC_MSG_WARN([Could not find XFree86 VidMode extension, ignoring --enable-xf86-vidmode.])
120	WANT_XF86_VIDMODE=no
121	])
122	fi
123
124	dnl We use GTK+ if possible.
125	UISRCS=
126	if [[ "x$WANT_GTK" = "xyes" ]]; then
127	AM_PATH_GTK(1.2.0, [
128	AC_DEFINE(ENABLE_GTK)
129	CFLAGS="$CFLAGS $GTK_CFLAGS"
130	CXXFLAGS="$CXXFLAGS $GTK_CFLAGS"
131	LIBS="$LIBS $GTK_LIBS"
132	UISRCS=prefs_editor_gtk.cpp
133	], [
134	AC_MSG_WARN([Could not find GTK+, disabling user interface.])
135	WANT_GTK=no
136	])
137	fi
138
139	dnl We use ESD if possible.
140	if [[ "x$WANT_ESD" = "xyes" ]]; then
141	AM_PATH_ESD(0.2.8, [
142	AC_DEFINE(ENABLE_ESD)
143	CFLAGS="$CFLAGS $ESD_CFLAGS"
144	CXXFLAGS="$CXXFLAGS $ESD_CFLAGS"
145	LIBS="$LIBS $ESD_LIBS"
146	], [
147	AC_MSG_WARN([Could not find ESD, disabling ESD support.])
148	WANT_ESD=no
149	])
150	fi
151
152	dnl Checks for header files.
153	AC_HEADER_STDC
154	AC_HEADER_SYS_WAIT
155	AC_CHECK_HEADERS(mach/vm_map.h mach/mach_init.h sys/mman.h)
156	AC_CHECK_HEADERS(sys/time.h sys/times.h)
157	AC_CHECK_HEADERS(unistd.h fcntl.h byteswap.h)
158
159	dnl Checks for typedefs, structures, and compiler characteristics.
160	AC_C_BIGENDIAN
161	AC_C_CONST
162	AC_C_INLINE
163	AC_CHECK_SIZEOF(short, 2)
164	AC_CHECK_SIZEOF(int, 4)
165	AC_CHECK_SIZEOF(long, 4)
166	AC_CHECK_SIZEOF(long long, 8)
167	AC_CHECK_SIZEOF(float, 4)
168	AC_CHECK_SIZEOF(double, 8)
169	AC_CHECK_SIZEOF(void *, 4)
170	AC_TYPE_OFF_T
171	AC_CHECK_TYPE(loff_t, off_t)
172	AC_TYPE_SIZE_T
173	AC_TYPE_SIGNAL
174	AC_HEADER_TIME
175	AC_STRUCT_TM
176
177	dnl Checks for library functions.
178	AC_CHECK_FUNCS(strdup cfmakeraw)
179	AC_CHECK_FUNCS(nanosleep clock_gettime timer_create)
180	AC_CHECK_FUNCS(sigaction signal)
181	AC_CHECK_FUNCS(mmap mprotect munmap)
182	AC_CHECK_FUNCS(vm_allocate vm_deallocate vm_protect)
183
184	dnl Select system-dependant sources.
185	if [[ "x$EMULATED_PPC" = "xno" ]]; then
186	SYSSRCS="Linux/paranoia.cpp Linux/sheepthreads.c Linux/asm_linux.S"
187	else
188	SYSSRCS="../kpx_cpu/sheepshaver_glue.cpp \
189	../kpx_cpu/src/cpu/ppc/ppc-cpu.cpp \
190	../kpx_cpu/src/cpu/ppc/ppc-decode.cpp \
191	../kpx_cpu/src/cpu/ppc/ppc-execute.cpp"
192	CPPFLAGS="$CPPFLAGS -I../kpx_cpu/include -I../kpx_cpu/src"
193	fi
194	SYSSRCS="$SYSSRCS $SEMSRCS $UISRCS $MONSRCS"
195
196	dnl Define a macro that translates a yesno-variable into a C macro definition
197	dnl to be put into the config.h file
198	dnl $1 -- the macro to define
199	dnl $2 -- the value to translate
200	dnl $3 -- template name
201	AC_DEFUN(AC_TRANSLATE_DEFINE, [
202	if [[ "x$2" = "xyes" -o "x$2" = "xguessing yes" ]]; then
203	AC_DEFINE($1, 1, $3)
204	fi
205	])
206
207	dnl Various checks if the system supports vm_allocate() and the like functions.
208	have_mach_vm=no
209	if [[ "x$ac_cv_func_vm_allocate" = "xyes" -a "x$ac_cv_func_vm_deallocate" = "xyes" -a \
210	"x$ac_cv_func_vm_protect" = "xyes" ]]; then
211	have_mach_vm=yes
212	fi
213	AC_TRANSLATE_DEFINE(HAVE_MACH_VM, "$have_mach_vm",
214	[Define if your system has a working vm_allocate()-based memory allocator.])
215
216	dnl Check that vm_allocate(), vm_protect() work
217	if [[ "x$have_mach_vm" = "xyes" ]]; then
218
219	AC_CACHE_CHECK([whether vm_protect works],
220	ac_cv_vm_protect_works, [
221	AC_LANG_SAVE
222	AC_LANG_CPLUSPLUS
223	ac_cv_vm_protect_works=yes
224	dnl First the tests that should segfault
225	for test_def in NONE_READ NONE_WRITE READ_WRITE; do
226	AC_TRY_RUN([
227	#define CONFIGURE_TEST_VM_MAP
228	#define TEST_VM_PROT_$test_def
229	#include "vm_alloc.cpp"
230	], ac_cv_vm_protect_works=no, rm -f core,
231	dnl When cross-compiling, do not assume anything
232	ac_cv_vm_protect_works="guessing no"
233	)
234	done
235	AC_TRY_RUN([
236	#define CONFIGURE_TEST_VM_MAP
237	#define TEST_VM_PROT_RDWR_WRITE
238	#include "vm_alloc.cpp"
239	], , ac_cv_vm_protect_works=no,
240	dnl When cross-compiling, do not assume anything
241	ac_cv_vm_protect_works="guessing no"
242	)
243	AC_LANG_RESTORE
244	]
245	)
246
247	dnl Remove support for vm_allocate() if vm_protect() does not work
248	if [[ "x$have_mach_vm" = "xyes" ]]; then
249	case $ac_cv_vm_protect_works in
250	*yes) have_mach_vm=yes;;
251	*no) have_mach_vm=no;;
252	esac
253	fi
254	AC_TRANSLATE_DEFINE(HAVE_MACH_VM, "$have_mach_vm",
255	[Define if your system has a working vm_allocate()-based memory allocator.])
256
257	fi dnl HAVE_MACH_VM
258
259	dnl Various checks if the system supports mmap() and the like functions.
260	dnl ... and Mach memory allocators are not supported
261	have_mmap_vm=no
262	if [[ "x$ac_cv_func_mmap" = "xyes" -a "x$ac_cv_func_munmap" = "xyes" -a \
263	"x$ac_cv_func_mprotect" = "xyes" ]]; then
264	if [[ "x$have_mach_vm" = "xno" ]]; then
265	have_mmap_vm=yes
266	fi
267	fi
268	AC_TRANSLATE_DEFINE(HAVE_MMAP_VM, "$have_mmap_vm",
269	[Define if your system has a working mmap()-based memory allocator.])
270
271	dnl Check that mmap() and associated functions work.
272	if [[ "x$have_mmap_vm" = "xyes" ]]; then
273
274	dnl Check if we have a working anonymous mmap()
275	AC_CACHE_CHECK([whether mmap supports MAP_ANON],
276	ac_cv_mmap_anon, [
277	AC_LANG_SAVE
278	AC_LANG_CPLUSPLUS
279	AC_TRY_RUN([
280	#define HAVE_MMAP_ANON
281	#define CONFIGURE_TEST_VM_MAP
282	#define TEST_VM_MMAP_ANON
283	#include "vm_alloc.cpp"
284	], ac_cv_mmap_anon=yes, ac_cv_mmap_anon=no,
285	dnl When cross-compiling, do not assume anything.
286	ac_cv_mmap_anon="guessing no"
287	)
288	AC_LANG_RESTORE
289	]
290	)
291	AC_TRANSLATE_DEFINE(HAVE_MMAP_ANON, "$ac_cv_mmap_anon",
292	[Define if <sys/mman.h> defines MAP_ANON and mmap()'ing with MAP_ANON works.])
293
294	AC_CACHE_CHECK([whether mmap supports MAP_ANONYMOUS],
295	ac_cv_mmap_anonymous, [
296	AC_LANG_SAVE
297	AC_LANG_CPLUSPLUS
298	AC_TRY_RUN([
299	#define HAVE_MMAP_ANONYMOUS
300	#define CONFIGURE_TEST_VM_MAP
301	#define TEST_VM_MMAP_ANON
302	#include "vm_alloc.cpp"
303	], ac_cv_mmap_anonymous=yes, ac_cv_mmap_anonymous=no,
304	dnl When cross-compiling, do not assume anything.
305	ac_cv_mmap_anonymous="guessing no"
306	)
307	AC_LANG_RESTORE
308	]
309	)
310	AC_TRANSLATE_DEFINE(HAVE_MMAP_ANONYMOUS, "$ac_cv_mmap_anonymous",
311	[Define if <sys/mman.h> defines MAP_ANONYMOUS and mmap()'ing with MAP_ANONYMOUS works.])
312
313	AC_CACHE_CHECK([whether mprotect works],
314	ac_cv_mprotect_works, [
315	AC_LANG_SAVE
316	AC_LANG_CPLUSPLUS
317	ac_cv_mprotect_works=yes
318	dnl First the tests that should segfault
319	for test_def in NONE_READ NONE_WRITE READ_WRITE; do
320	AC_TRY_RUN([
321	#define CONFIGURE_TEST_VM_MAP
322	#define TEST_VM_PROT_$test_def
323	#include "vm_alloc.cpp"
324	], ac_cv_mprotect_works=no, rm -f core,
325	dnl When cross-compiling, do not assume anything
326	ac_cv_mprotect_works="guessing no"
327	)
328	done
329	AC_TRY_RUN([
330	#define CONFIGURE_TEST_VM_MAP
331	#define TEST_VM_PROT_RDWR_WRITE
332	#include "vm_alloc.cpp"
333	], , ac_cv_mprotect_works=no,
334	dnl When cross-compiling, do not assume anything
335	ac_cv_mprotect_works="guessing no"
336	)
337	AC_LANG_RESTORE
338	]
339	)
340
341	dnl Remove support for mmap() if mprotect() does not work
342	if [[ "x$have_mmap_vm" = "xyes" ]]; then
343	case $ac_cv_mprotect_works in
344	*yes) have_mmap_vm=yes;;
345	*no) have_mmap_vm=no;;
346	esac
347	fi
348	AC_TRANSLATE_DEFINE(HAVE_MMAP_VM, $have_mmap_vm,
349	[Define if your system has a working mmap()-based memory allocator.])
350
351	fi dnl HAVE_MMAP_VM
352
353	dnl Check if we can mmap 0x2000 bytes from 0x0000
354	AC_CACHE_CHECK([whether we can map Low Memory area 0x0000-0x2000],
355	ac_cv_can_map_lm, [
356	AC_LANG_SAVE
357	AC_LANG_CPLUSPLUS
358	AC_TRY_RUN([
359	#include "vm_alloc.cpp"
360	int main(void) { /* returns 0 if we could map the lowmem globals */
361	volatile char * lm = 0;
362	if (vm_init() < 0) exit(1);
363	if (vm_acquire_fixed(0, 0x2000) < 0) exit(1);
364	lm[0] = 'z';
365	if (vm_release((char *)lm, 0x2000) < 0) exit(1);
366	vm_exit(); exit(0);
367	}
368	], ac_cv_can_map_lm=yes, ac_cv_can_map_lm=no,
369	dnl When cross-compiling, do not assume anything.
370	ac_cv_can_map_lm="guessing no"
371	)
372	AC_LANG_RESTORE
373	]
374	)
375
376	dnl Check signal handlers need to be reinstalled
377	AC_CACHE_CHECK([whether signal handlers need to be reinstalled],
378	ac_cv_signal_need_reinstall, [
379	AC_LANG_SAVE
380	AC_LANG_CPLUSPLUS
381	AC_TRY_RUN([
382	#include <stdlib.h>
383	#ifdef HAVE_UNISTD_H
384	#include <unistd.h>
385	#endif
386	#include <signal.h>
387	static int handled_signal = 0;
388	RETSIGTYPE sigusr1_handler(int) { handled_signal++; }
389	int main(void) { /* returns 0 if signals need not to be reinstalled */
390	signal(SIGUSR1, sigusr1_handler); raise(SIGUSR1); raise(SIGUSR1);
391	exit(handled_signal == 2);
392	}
393	], ac_cv_signal_need_reinstall=yes, ac_cv_signal_need_reinstall=no,
394	dnl When cross-compiling, do not assume anything.
395	ac_cv_signal_need_reinstall="guessing yes"
396	)
397	AC_LANG_RESTORE
398	]
399	)
400	AC_TRANSLATE_DEFINE(SIGNAL_NEED_REINSTALL, "$ac_cv_signal_need_reinstall",
401	[Define if your system requires signals to be reinstalled.])
402
403	dnl Check if sigaction handlers need to be reinstalled
404	AC_CACHE_CHECK([whether sigaction handlers need to be reinstalled],
405	ac_cv_sigaction_need_reinstall, [
406	AC_LANG_SAVE
407	AC_LANG_CPLUSPLUS
408	AC_TRY_RUN([
409	#include <stdlib.h>
410	#ifdef HAVE_UNISTD_H
411	#include <unistd.h>
412	#endif
413	#include <signal.h>
414	static int handled_signal = 0;
415	RETSIGTYPE sigusr1_handler(int) { handled_signal++; }
416	typedef RETSIGTYPE (*signal_handler)(int);
417	static signal_handler mysignal(int sig, signal_handler handler) {
418	struct sigaction old_sa;
419	struct sigaction new_sa;
420	new_sa.sa_handler = handler;
421	return ((sigaction(sig,&new_sa,&old_sa) < 0) ? SIG_IGN : old_sa.sa_handler);
422	}
423	int main(void) { /* returns 0 if signals need not to be reinstalled */
424	mysignal(SIGUSR1, sigusr1_handler); raise(SIGUSR1); raise(SIGUSR1);
425	exit(handled_signal == 2);
426	}
427	], ac_cv_sigaction_need_reinstall=yes, ac_cv_sigaction_need_reinstall=no,
428	dnl When cross-compiling, do not assume anything.
429	ac_cv_sigaction_need_reinstall="guessing yes"
430	)
431	AC_LANG_RESTORE
432	]
433	)
434	AC_TRANSLATE_DEFINE(SIGACTION_NEED_REINSTALL, "$ac_cv_sigaction_need_reinstall",
435	[Define if your system requires sigactions to be reinstalled.])
436
437	dnl Check if extended signals are supported.
438	AC_CACHE_CHECK([whether your system supports extended signal handlers],
439	ac_cv_have_extended_signals, [
440	AC_LANG_SAVE
441	AC_LANG_CPLUSPLUS
442	AC_TRY_RUN([
443	#define HAVE_SIGINFO_T 1
444	#define CONFIGURE_TEST_SIGSEGV_RECOVERY
445	#include "vm_alloc.cpp"
446	#include "sigsegv.cpp"
447	], ac_cv_have_extended_signals=yes, ac_cv_have_extended_signals=no,
448	dnl When cross-compiling, do not assume anything.
449	ac_cv_have_extended_signals=no
450	)
451	AC_LANG_RESTORE
452	]
453	)
454	AC_TRANSLATE_DEFINE(HAVE_SIGINFO_T, "$ac_cv_have_extended_signals",
455	[Define if your system support extended signals.])
456
457	dnl Otherwise, check for subterfuges.
458	if [[ "x$ac_cv_have_extended_signals" = "xno" ]]; then
459	AC_CACHE_CHECK([whether we then have a subterfuge for your system],
460	ac_cv_have_sigcontext_hack, [
461	AC_LANG_SAVE
462	AC_LANG_CPLUSPLUS
463	AC_TRY_RUN([
464	#define HAVE_SIGCONTEXT_SUBTERFUGE 1
465	#define CONFIGURE_TEST_SIGSEGV_RECOVERY
466	#include "vm_alloc.cpp"
467	#include "sigsegv.cpp"
468	], ac_cv_have_sigcontext_hack=yes, ac_cv_have_sigcontext_hack=no,
469	dnl When cross-compiling, do not assume anything.
470	ac_cv_have_sigcontext_hack=no
471	)
472	AC_LANG_RESTORE
473	])
474	AC_TRANSLATE_DEFINE(HAVE_SIGCONTEXT_SUBTERFUGE, "$ac_cv_have_sigcontext_hack",
475	[Define if we know a hack to replace siginfo_t->si_addr member.])
476	fi
477
478	dnl Check if we can ignore the fault (instruction skipping in SIGSEGV handler)
479	AC_CACHE_CHECK([whether we can skip instruction in SIGSEGV handler],
480	ac_cv_have_skip_instruction, [
481	AC_LANG_SAVE
482	AC_LANG_CPLUSPLUS
483	AC_TRY_RUN([
484	#define HAVE_SIGSEGV_SKIP_INSTRUCTION 1
485	#define CONFIGURE_TEST_SIGSEGV_RECOVERY
486	#include "vm_alloc.cpp"
487	#include "sigsegv.cpp"
488	], ac_cv_have_skip_instruction=yes, ac_cv_have_skip_instruction=no,
489	dnl When cross-compiling, do not assume anything.
490	ac_cv_have_skip_instruction=no
491	)
492	AC_LANG_RESTORE
493	]
494	)
495	AC_TRANSLATE_DEFINE(HAVE_SIGSEGV_SKIP_INSTRUCTION, "$ac_cv_have_skip_instruction",
496	[Define if we can ignore the fault (instruction skipping in SIGSEGV handler).])
497
498	dnl Can we do Video on SEGV Signals ?
499	CAN_VOSF=no
500	if [[ "$ac_cv_have_extended_signals" = "yes" -o "$ac_cv_have_sigcontext_hack" = "yes" ]]; then
501	CAN_VOSF=yes
502	fi
503
504	dnl Enable VOSF screen updates with this feature is requested and feasible
505	if [[ "x$WANT_VOSF" = "xyes" -a "x$CAN_VOSF" = "xyes" ]]; then
506	AC_DEFINE(ENABLE_VOSF, 1, [Define if using video enabled on SEGV signals.])
507	else
508	WANT_VOSF=no
509	fi
510
511	dnl Generate Makefile.
512	AC_SUBST(SYSSRCS)
513	AC_OUTPUT(Makefile)
514
515	dnl Print summary.
516	echo
517	echo SheepShaver configuration summary:
518	echo
519	echo XFree86 DGA support .............. : $WANT_XF86_DGA
520	echo XFree86 VidMode support .......... : $WANT_XF86_VIDMODE
521	echo Using PowerPC emulator ........... : $EMULATED_PPC
522	echo Enable video on SEGV signals ..... : $WANT_VOSF
523	echo ESD sound support ................ : $WANT_ESD
524	echo GTK user interface ............... : $WANT_GTK
525	echo mon debugger support ............. : $WANT_MON
526	echo
527	echo "Configuration done. Now type \"make\"."