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(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 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$HAVE_PPC" = "xno" ]]; 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(unistd.h fcntl.h sys/time.h sys/mman.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$HAVE_PPC" = "xyes" ]]; then
  SYSSRCS="Linux/paranoia.cpp Linux/sheepthreads.c Linux/asm_linux.S"
else
  SYSSRCS="../emul_ppc/emul_ppc.cpp"
fi
SYSSRCS="$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 Enable video on SEGV signals ..... : $WANT_VOSF
echo ESD sound support ................ : $WANT_ESD
echo GTK user interface ............... : $WANT_GTK
echo mon debugger support ............. : $WANT_MON
echo
echo "Configuration done. Now type \"make\"."
Revision:	1.5
Committed:	2003-05-22T22:12:04Z (21 years, 5 months ago) by gbeauche
Branch:	MAIN
Changes since 1.4:	+15 -0 lines
Log Message:	Import VOSF from Basilisk II for faster and more accurate video refresh. There may be some bugs left though. Rework sigsegv_handler() a little to accomodate VOSF way of life. TODO: merge video drivers infrastructure from B2.
#	User	Rev	Content
1	cebix	1.1	dnl Process this file with autoconf to produce a configure script.
2			dnl Written in 2002 by Christian Bauer
3
4			AC_INIT(main_unix.cpp)
5			AC_PREREQ(2.12)
6			AC_CONFIG_HEADER(config.h)
7
8			dnl Options.
9			AC_ARG_ENABLE(xf86-dga, [ --enable-xf86-dga use the XFree86 DGA extension [default=yes]], [WANT_XF86_DGA=$enableval], [WANT_XF86_DGA=yes])
10			AC_ARG_ENABLE(xf86-vidmode, [ --enable-xf86-vidmode use the XFree86 VidMode extension [default=yes]], [WANT_XF86_VIDMODE=$enableval], [WANT_XF86_VIDMODE=yes])
11	gbeauche	1.5	AC_ARG_ENABLE(vosf, [ --enable-vosf enable video on SEGV signals [default=yes]], [WANT_VOSF=$enableval], [WANT_VOSF=yes])
12	cebix	1.1	AC_ARG_WITH(esd, [ --with-esd support ESD for sound under Linux/FreeBSD [default=yes]], [WANT_ESD=$withval], [WANT_ESD=yes])
13			AC_ARG_WITH(gtk, [ --with-gtk use GTK user interface [default=yes]], [WANT_GTK=$withval], [WANT_GTK=yes])
14			AC_ARG_WITH(mon, [ --with-mon use mon as debugger [default=yes]], [WANT_MON=$withval], [WANT_MON=yes])
15
16			dnl Checks for programs.
17			AC_PROG_CC
18			AC_PROG_CPP
19			AC_PROG_CXX
20			AC_PROG_MAKE_SET
21			AC_PROG_INSTALL
22
23			dnl Check for PowerPC target CPU.
24			HAVE_PPC=no
25			AC_MSG_CHECKING(for PowerPC target CPU)
26			AC_EGREP_CPP(yes,
27			[
28			#ifdef __powerpc__
29			yes
30			#endif
31			], [AC_MSG_RESULT(yes); HAVE_PPC=yes], AC_MSG_RESULT(no))
32
33			dnl We use mon if possible.
34			MONSRCS=
35			if [[ "x$WANT_MON" = "xyes" ]]; then
36			AC_MSG_CHECKING(for mon)
37			mon_srcdir=../../../mon/src
38			if grep mon_init $mon_srcdir/mon.h >/dev/null 2>/dev/null; then
39			AC_MSG_RESULT(yes)
40			AC_DEFINE(ENABLE_MON)
41			MONSRCS="$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 $mon_srcdir/disass/m68k-opc.c"
42			CXXFLAGS="$CXXFLAGS -I$mon_srcdir -I$mon_srcdir/disass"
43	gbeauche	1.2	AC_CHECK_LIB(ncurses, tgetent, ,
44			AC_CHECK_LIB(termcap, tgetent, ,
45			AC_CHECK_LIB(termlib, tgetent, ,
46			AC_CHECK_LIB(terminfo, tgetent, ,
47			AC_CHECK_LIB(Hcurses, tgetent, ,
48			AC_CHECK_LIB(curses, tgetent))))))
49	cebix	1.1	AC_CHECK_LIB(readline, readline)
50			AC_CHECK_HEADERS(readline.h history.h readline/readline.h readline/history.h)
51			else
52			AC_MSG_RESULT(no)
53			AC_MSG_WARN([Could not find mon, ignoring --with-mon.])
54			WANT_MON=no
55			fi
56			fi
57
58			dnl Checks for libraries.
59			AC_CHECK_LIB(posix4, sem_init)
60
61			dnl We need X11.
62			AC_PATH_XTRA
63			if [[ "x$no_x" = "xyes" ]]; then
64			AC_MSG_ERROR([You need X11 to run SheepShaver.])
65			fi
66			CFLAGS="$CFLAGS $X_CFLAGS"
67			CXXFLAGS="$CXXFLAGS $X_CFLAGS"
68			LIBS="$LIBS $X_PRE_LIBS $X_LIBS -lX11 -lXext $X_EXTRA_LIBS"
69
70			dnl We need pthreads on non-PowerPC systems. Try libpthread first, then libc_r (FreeBSD), then PTL.
71			HAVE_PTHREADS=yes
72			if [[ "x$HAVE_PPC" = "xno" ]]; then
73			AC_CHECK_LIB(pthread, pthread_create, , [
74			AC_CHECK_LIB(c_r, pthread_create, , [
75			AC_CHECK_LIB(PTL, pthread_create, , [
76			AC_MSG_ERROR([You need pthreads to run Basilisk II.])
77			])
78			])
79			])
80			AC_CHECK_FUNCS(pthread_cancel)
81			fi
82
83			dnl If POSIX.4 semaphores are not available, we emulate them with pthread mutexes.
84			SEMSRC=
85			AC_CHECK_FUNCS(sem_init, , [
86	gbeauche	1.4	if test "x$HAVE_PTHREADS" = "xyes"; then
87	cebix	1.1	SEMSRC=posix_sem.cpp
88			fi
89			])
90
91			dnl We use XFree86 DGA if possible.
92			if [[ "x$WANT_XF86_DGA" = "xyes" ]]; then
93			AC_CHECK_LIB(Xxf86dga, XF86DGAQueryExtension, [
94			AC_DEFINE(ENABLE_XF86_DGA)
95			LIBS="$LIBS -lXxf86dga"
96			], [
97			AC_MSG_WARN([Could not find XFree86 DGA extension, ignoring --enable-xf86-dga.])
98			WANT_XF86_DGA=no
99			])
100			fi
101
102			dnl We use XFree86 VidMode if possible.
103			if [[ "x$WANT_XF86_VIDMODE" = "xyes" ]]; then
104			AC_CHECK_LIB(Xxf86vm, XF86VidModeQueryExtension, [
105			AC_DEFINE(ENABLE_XF86_VIDMODE)
106			LIBS="$LIBS -lXxf86vm"
107			], [
108			AC_MSG_WARN([Could not find XFree86 VidMode extension, ignoring --enable-xf86-vidmode.])
109			WANT_XF86_VIDMODE=no
110			])
111			fi
112
113			dnl We use GTK+ if possible.
114			UISRCS=
115			if [[ "x$WANT_GTK" = "xyes" ]]; then
116			AM_PATH_GTK(1.2.0, [
117			AC_DEFINE(ENABLE_GTK)
118			CFLAGS="$CFLAGS $GTK_CFLAGS"
119			CXXFLAGS="$CXXFLAGS $GTK_CFLAGS"
120			LIBS="$LIBS $GTK_LIBS"
121			UISRCS=prefs_editor_gtk.cpp
122			], [
123			AC_MSG_WARN([Could not find GTK+, disabling user interface.])
124			WANT_GTK=no
125			])
126			fi
127
128			dnl We use ESD if possible.
129			if [[ "x$WANT_ESD" = "xyes" ]]; then
130			AM_PATH_ESD(0.2.8, [
131			AC_DEFINE(ENABLE_ESD)
132			CFLAGS="$CFLAGS $ESD_CFLAGS"
133			CXXFLAGS="$CXXFLAGS $ESD_CFLAGS"
134			LIBS="$LIBS $ESD_LIBS"
135			], [
136			AC_MSG_WARN([Could not find ESD, disabling ESD support.])
137			WANT_ESD=no
138			])
139			fi
140
141			dnl Checks for header files.
142			AC_HEADER_STDC
143			AC_HEADER_SYS_WAIT
144	gbeauche	1.4	AC_CHECK_HEADERS(unistd.h fcntl.h sys/time.h sys/mman.h)
145	cebix	1.1
146			dnl Checks for typedefs, structures, and compiler characteristics.
147			AC_C_BIGENDIAN
148			AC_C_CONST
149			AC_C_INLINE
150			AC_CHECK_SIZEOF(short, 2)
151			AC_CHECK_SIZEOF(int, 4)
152			AC_CHECK_SIZEOF(long, 4)
153			AC_CHECK_SIZEOF(long long, 8)
154	gbeauche	1.4	AC_CHECK_SIZEOF(float, 4)
155			AC_CHECK_SIZEOF(double, 8)
156	gbeauche	1.3	AC_CHECK_SIZEOF(void *, 4)
157	cebix	1.1	AC_TYPE_OFF_T
158			AC_CHECK_TYPE(loff_t, off_t)
159			AC_TYPE_SIZE_T
160	gbeauche	1.4	AC_TYPE_SIGNAL
161	cebix	1.1	AC_HEADER_TIME
162			AC_STRUCT_TM
163
164			dnl Checks for library functions.
165			AC_CHECK_FUNCS(strdup cfmakeraw)
166			AC_CHECK_FUNCS(nanosleep clock_gettime timer_create)
167	gbeauche	1.4	AC_CHECK_FUNCS(sigaction signal)
168			AC_CHECK_FUNCS(mmap mprotect munmap)
169			AC_CHECK_FUNCS(vm_allocate vm_deallocate vm_protect)
170	cebix	1.1
171			dnl Select system-dependant sources.
172			if [[ "x$HAVE_PPC" = "xyes" ]]; then
173			SYSSRCS="Linux/paranoia.cpp Linux/sheepthreads.c Linux/asm_linux.S"
174			else
175			SYSSRCS="../emul_ppc/emul_ppc.cpp"
176			fi
177			SYSSRCS="$SYSSRCS $SEMSRCS $UISRCS $MONSRCS"
178	gbeauche	1.4
179			dnl Define a macro that translates a yesno-variable into a C macro definition
180			dnl to be put into the config.h file
181			dnl $1 -- the macro to define
182			dnl $2 -- the value to translate
183			dnl $3 -- template name
184			AC_DEFUN(AC_TRANSLATE_DEFINE, [
185			if [[ "x$2" = "xyes" -o "x$2" = "xguessing yes" ]]; then
186			AC_DEFINE($1, 1, $3)
187			fi
188			])
189
190			dnl Various checks if the system supports vm_allocate() and the like functions.
191			have_mach_vm=no
192			if [[ "x$ac_cv_func_vm_allocate" = "xyes" -a "x$ac_cv_func_vm_deallocate" = "xyes" -a \
193			"x$ac_cv_func_vm_protect" = "xyes" ]]; then
194			have_mach_vm=yes
195			fi
196			AC_TRANSLATE_DEFINE(HAVE_MACH_VM, "$have_mach_vm",
197			[Define if your system has a working vm_allocate()-based memory allocator.])
198
199			dnl Check that vm_allocate(), vm_protect() work
200			if [[ "x$have_mach_vm" = "xyes" ]]; then
201
202			AC_CACHE_CHECK([whether vm_protect works],
203			ac_cv_vm_protect_works, [
204			AC_LANG_SAVE
205			AC_LANG_CPLUSPLUS
206			ac_cv_vm_protect_works=yes
207			dnl First the tests that should segfault
208			for test_def in NONE_READ NONE_WRITE READ_WRITE; do
209			AC_TRY_RUN([
210			#define CONFIGURE_TEST_VM_MAP
211			#define TEST_VM_PROT_$test_def
212			#include "vm_alloc.cpp"
213			], ac_cv_vm_protect_works=no, rm -f core,
214			dnl When cross-compiling, do not assume anything
215			ac_cv_vm_protect_works="guessing no"
216			)
217			done
218			AC_TRY_RUN([
219			#define CONFIGURE_TEST_VM_MAP
220			#define TEST_VM_PROT_RDWR_WRITE
221			#include "vm_alloc.cpp"
222			], , ac_cv_vm_protect_works=no,
223			dnl When cross-compiling, do not assume anything
224			ac_cv_vm_protect_works="guessing no"
225			)
226			AC_LANG_RESTORE
227			]
228			)
229
230			dnl Remove support for vm_allocate() if vm_protect() does not work
231			if [[ "x$have_mach_vm" = "xyes" ]]; then
232			case $ac_cv_vm_protect_works in
233			*yes) have_mach_vm=yes;;
234			*no) have_mach_vm=no;;
235			esac
236			fi
237			AC_TRANSLATE_DEFINE(HAVE_MACH_VM, "$have_mach_vm",
238			[Define if your system has a working vm_allocate()-based memory allocator.])
239
240			fi dnl HAVE_MACH_VM
241
242			dnl Various checks if the system supports mmap() and the like functions.
243			dnl ... and Mach memory allocators are not supported
244			have_mmap_vm=no
245			if [[ "x$ac_cv_func_mmap" = "xyes" -a "x$ac_cv_func_munmap" = "xyes" -a \
246			"x$ac_cv_func_mprotect" = "xyes" ]]; then
247			if [[ "x$have_mach_vm" = "xno" ]]; then
248			have_mmap_vm=yes
249			fi
250			fi
251			AC_TRANSLATE_DEFINE(HAVE_MMAP_VM, "$have_mmap_vm",
252			[Define if your system has a working mmap()-based memory allocator.])
253
254			dnl Check that mmap() and associated functions work.
255			if [[ "x$have_mmap_vm" = "xyes" ]]; then
256
257			dnl Check if we have a working anonymous mmap()
258			AC_CACHE_CHECK([whether mmap supports MAP_ANON],
259			ac_cv_mmap_anon, [
260			AC_LANG_SAVE
261			AC_LANG_CPLUSPLUS
262			AC_TRY_RUN([
263			#define HAVE_MMAP_ANON
264			#define CONFIGURE_TEST_VM_MAP
265			#define TEST_VM_MMAP_ANON
266			#include "vm_alloc.cpp"
267			], ac_cv_mmap_anon=yes, ac_cv_mmap_anon=no,
268			dnl When cross-compiling, do not assume anything.
269			ac_cv_mmap_anon="guessing no"
270			)
271			AC_LANG_RESTORE
272			]
273			)
274			AC_TRANSLATE_DEFINE(HAVE_MMAP_ANON, "$ac_cv_mmap_anon",
275			[Define if <sys/mman.h> defines MAP_ANON and mmap()'ing with MAP_ANON works.])
276
277			AC_CACHE_CHECK([whether mmap supports MAP_ANONYMOUS],
278			ac_cv_mmap_anonymous, [
279			AC_LANG_SAVE
280			AC_LANG_CPLUSPLUS
281			AC_TRY_RUN([
282			#define HAVE_MMAP_ANONYMOUS
283			#define CONFIGURE_TEST_VM_MAP
284			#define TEST_VM_MMAP_ANON
285			#include "vm_alloc.cpp"
286			], ac_cv_mmap_anonymous=yes, ac_cv_mmap_anonymous=no,
287			dnl When cross-compiling, do not assume anything.
288			ac_cv_mmap_anonymous="guessing no"
289			)
290			AC_LANG_RESTORE
291			]
292			)
293			AC_TRANSLATE_DEFINE(HAVE_MMAP_ANONYMOUS, "$ac_cv_mmap_anonymous",
294			[Define if <sys/mman.h> defines MAP_ANONYMOUS and mmap()'ing with MAP_ANONYMOUS works.])
295
296			AC_CACHE_CHECK([whether mprotect works],
297			ac_cv_mprotect_works, [
298			AC_LANG_SAVE
299			AC_LANG_CPLUSPLUS
300			ac_cv_mprotect_works=yes
301			dnl First the tests that should segfault
302			for test_def in NONE_READ NONE_WRITE READ_WRITE; do
303			AC_TRY_RUN([
304			#define CONFIGURE_TEST_VM_MAP
305			#define TEST_VM_PROT_$test_def
306			#include "vm_alloc.cpp"
307			], ac_cv_mprotect_works=no, rm -f core,
308			dnl When cross-compiling, do not assume anything
309			ac_cv_mprotect_works="guessing no"
310			)
311			done
312			AC_TRY_RUN([
313			#define CONFIGURE_TEST_VM_MAP
314			#define TEST_VM_PROT_RDWR_WRITE
315			#include "vm_alloc.cpp"
316			], , ac_cv_mprotect_works=no,
317			dnl When cross-compiling, do not assume anything
318			ac_cv_mprotect_works="guessing no"
319			)
320			AC_LANG_RESTORE
321			]
322			)
323
324			dnl Remove support for mmap() if mprotect() does not work
325			if [[ "x$have_mmap_vm" = "xyes" ]]; then
326			case $ac_cv_mprotect_works in
327			*yes) have_mmap_vm=yes;;
328			*no) have_mmap_vm=no;;
329			esac
330			fi
331			AC_TRANSLATE_DEFINE(HAVE_MMAP_VM, $have_mmap_vm,
332			[Define if your system has a working mmap()-based memory allocator.])
333
334			fi dnl HAVE_MMAP_VM
335
336			dnl Check if we can mmap 0x2000 bytes from 0x0000
337			AC_CACHE_CHECK([whether we can map Low Memory area 0x0000-0x2000],
338			ac_cv_can_map_lm, [
339			AC_LANG_SAVE
340			AC_LANG_CPLUSPLUS
341			AC_TRY_RUN([
342			#include "vm_alloc.cpp"
343			int main(void) { /* returns 0 if we could map the lowmem globals */
344			volatile char * lm = 0;
345			if (vm_init() < 0) exit(1);
346			if (vm_acquire_fixed(0, 0x2000) < 0) exit(1);
347			lm[0] = 'z';
348			if (vm_release((char *)lm, 0x2000) < 0) exit(1);
349			vm_exit(); exit(0);
350			}
351			], ac_cv_can_map_lm=yes, ac_cv_can_map_lm=no,
352			dnl When cross-compiling, do not assume anything.
353			ac_cv_can_map_lm="guessing no"
354			)
355			AC_LANG_RESTORE
356			]
357			)
358
359			dnl Check signal handlers need to be reinstalled
360			AC_CACHE_CHECK([whether signal handlers need to be reinstalled],
361			ac_cv_signal_need_reinstall, [
362			AC_LANG_SAVE
363			AC_LANG_CPLUSPLUS
364			AC_TRY_RUN([
365			#include <stdlib.h>
366			#ifdef HAVE_UNISTD_H
367			#include <unistd.h>
368			#endif
369			#include <signal.h>
370			static int handled_signal = 0;
371			RETSIGTYPE sigusr1_handler(int) { handled_signal++; }
372			int main(void) { /* returns 0 if signals need not to be reinstalled */
373			signal(SIGUSR1, sigusr1_handler); raise(SIGUSR1); raise(SIGUSR1);
374			exit(handled_signal == 2);
375			}
376			], ac_cv_signal_need_reinstall=yes, ac_cv_signal_need_reinstall=no,
377			dnl When cross-compiling, do not assume anything.
378			ac_cv_signal_need_reinstall="guessing yes"
379			)
380			AC_LANG_RESTORE
381			]
382			)
383			AC_TRANSLATE_DEFINE(SIGNAL_NEED_REINSTALL, "$ac_cv_signal_need_reinstall",
384			[Define if your system requires signals to be reinstalled.])
385
386			dnl Check if sigaction handlers need to be reinstalled
387			AC_CACHE_CHECK([whether sigaction handlers need to be reinstalled],
388			ac_cv_sigaction_need_reinstall, [
389			AC_LANG_SAVE
390			AC_LANG_CPLUSPLUS
391			AC_TRY_RUN([
392			#include <stdlib.h>
393			#ifdef HAVE_UNISTD_H
394			#include <unistd.h>
395			#endif
396			#include <signal.h>
397			static int handled_signal = 0;
398			RETSIGTYPE sigusr1_handler(int) { handled_signal++; }
399			typedef RETSIGTYPE (*signal_handler)(int);
400			static signal_handler mysignal(int sig, signal_handler handler) {
401			struct sigaction old_sa;
402			struct sigaction new_sa;
403			new_sa.sa_handler = handler;
404			return ((sigaction(sig,&new_sa,&old_sa) < 0) ? SIG_IGN : old_sa.sa_handler);
405			}
406			int main(void) { /* returns 0 if signals need not to be reinstalled */
407			mysignal(SIGUSR1, sigusr1_handler); raise(SIGUSR1); raise(SIGUSR1);
408			exit(handled_signal == 2);
409			}
410			], ac_cv_sigaction_need_reinstall=yes, ac_cv_sigaction_need_reinstall=no,
411			dnl When cross-compiling, do not assume anything.
412			ac_cv_sigaction_need_reinstall="guessing yes"
413			)
414			AC_LANG_RESTORE
415			]
416			)
417			AC_TRANSLATE_DEFINE(SIGACTION_NEED_REINSTALL, "$ac_cv_sigaction_need_reinstall",
418			[Define if your system requires sigactions to be reinstalled.])
419
420			dnl Check if extended signals are supported.
421			AC_CACHE_CHECK([whether your system supports extended signal handlers],
422			ac_cv_have_extended_signals, [
423			AC_LANG_SAVE
424			AC_LANG_CPLUSPLUS
425			AC_TRY_RUN([
426			#define HAVE_SIGINFO_T 1
427			#define CONFIGURE_TEST_SIGSEGV_RECOVERY
428			#include "vm_alloc.cpp"
429			#include "sigsegv.cpp"
430			], ac_cv_have_extended_signals=yes, ac_cv_have_extended_signals=no,
431			dnl When cross-compiling, do not assume anything.
432			ac_cv_have_extended_signals=no
433			)
434			AC_LANG_RESTORE
435			]
436			)
437			AC_TRANSLATE_DEFINE(HAVE_SIGINFO_T, "$ac_cv_have_extended_signals",
438			[Define if your system support extended signals.])
439
440			dnl Otherwise, check for subterfuges.
441			if [[ "x$ac_cv_have_extended_signals" = "xno" ]]; then
442			AC_CACHE_CHECK([whether we then have a subterfuge for your system],
443			ac_cv_have_sigcontext_hack, [
444			AC_LANG_SAVE
445			AC_LANG_CPLUSPLUS
446			AC_TRY_RUN([
447			#define HAVE_SIGCONTEXT_SUBTERFUGE 1
448			#define CONFIGURE_TEST_SIGSEGV_RECOVERY
449			#include "vm_alloc.cpp"
450			#include "sigsegv.cpp"
451			], ac_cv_have_sigcontext_hack=yes, ac_cv_have_sigcontext_hack=no,
452			dnl When cross-compiling, do not assume anything.
453			ac_cv_have_sigcontext_hack=no
454			)
455			AC_LANG_RESTORE
456			])
457			AC_TRANSLATE_DEFINE(HAVE_SIGCONTEXT_SUBTERFUGE, "$ac_cv_have_sigcontext_hack",
458			[Define if we know a hack to replace siginfo_t->si_addr member.])
459			fi
460
461			dnl Check if we can ignore the fault (instruction skipping in SIGSEGV handler)
462			AC_CACHE_CHECK([whether we can skip instruction in SIGSEGV handler],
463			ac_cv_have_skip_instruction, [
464			AC_LANG_SAVE
465			AC_LANG_CPLUSPLUS
466			AC_TRY_RUN([
467			#define HAVE_SIGSEGV_SKIP_INSTRUCTION 1
468			#define CONFIGURE_TEST_SIGSEGV_RECOVERY
469			#include "vm_alloc.cpp"
470			#include "sigsegv.cpp"
471			], ac_cv_have_skip_instruction=yes, ac_cv_have_skip_instruction=no,
472			dnl When cross-compiling, do not assume anything.
473			ac_cv_have_skip_instruction=no
474			)
475			AC_LANG_RESTORE
476			]
477			)
478			AC_TRANSLATE_DEFINE(HAVE_SIGSEGV_SKIP_INSTRUCTION, "$ac_cv_have_skip_instruction",
479			[Define if we can ignore the fault (instruction skipping in SIGSEGV handler).])
480	cebix	1.1
481	gbeauche	1.5	dnl Can we do Video on SEGV Signals ?
482			CAN_VOSF=no
483			if [[ "$ac_cv_have_extended_signals" = "yes" -o "$ac_cv_have_sigcontext_hack" = "yes" ]]; then
484			CAN_VOSF=yes
485			fi
486
487			dnl Enable VOSF screen updates with this feature is requested and feasible
488			if [[ "x$WANT_VOSF" = "xyes" -a "x$CAN_VOSF" = "xyes" ]]; then
489			AC_DEFINE(ENABLE_VOSF, 1, [Define if using video enabled on SEGV signals.])
490			else
491			WANT_VOSF=no
492			fi
493
494	cebix	1.1	dnl Generate Makefile.
495			AC_SUBST(SYSSRCS)
496			AC_OUTPUT(Makefile)
497
498			dnl Print summary.
499			echo
500			echo SheepShaver configuration summary:
501			echo
502			echo XFree86 DGA support .............. : $WANT_XF86_DGA
503			echo XFree86 VidMode support .......... : $WANT_XF86_VIDMODE
504	gbeauche	1.5	echo Enable video on SEGV signals ..... : $WANT_VOSF
505	cebix	1.1	echo ESD sound support ................ : $WANT_ESD
506			echo GTK user interface ............... : $WANT_GTK
507			echo mon debugger support ............. : $WANT_MON
508			echo
509			echo "Configuration done. Now type \"make\"."