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_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 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 ESD sound support ................ : $WANT_ESD
echo GTK user interface ............... : $WANT_GTK
echo mon debugger support ............. : $WANT_MON
echo
echo "Configuration done. Now type \"make\"."
Revision:	1.4
Committed:	2003-05-13T16:59:57Z (21 years, 6 months ago) by gbeauche
Branch:	MAIN
Changes since 1.3:	+310 -2 lines
Log Message:	Use vm_acquire/vm_acquire_fixed/vm_release API. Prepare use of SIGSEGV handlers and instruction skippers. Fix test prior to including posix_sem.cpp.
#	User	Rev	Content
1	cebix	1.1	dnl Process this file with autoconf to produce a configure script.
2			dnl Written in 2002 by Christian Bauer
3
4			AC_INIT(main_unix.cpp)
5			AC_PREREQ(2.12)
6			AC_CONFIG_HEADER(config.h)
7
8			dnl Options.
9			AC_ARG_ENABLE(xf86-dga, [ --enable-xf86-dga use the XFree86 DGA extension [default=yes]], [WANT_XF86_DGA=$enableval], [WANT_XF86_DGA=yes])
10			AC_ARG_ENABLE(xf86-vidmode, [ --enable-xf86-vidmode use the XFree86 VidMode extension [default=yes]], [WANT_XF86_VIDMODE=$enableval], [WANT_XF86_VIDMODE=yes])
11			AC_ARG_WITH(esd, [ --with-esd support ESD for sound under Linux/FreeBSD [default=yes]], [WANT_ESD=$withval], [WANT_ESD=yes])
12			AC_ARG_WITH(gtk, [ --with-gtk use GTK user interface [default=yes]], [WANT_GTK=$withval], [WANT_GTK=yes])
13			AC_ARG_WITH(mon, [ --with-mon use mon as debugger [default=yes]], [WANT_MON=$withval], [WANT_MON=yes])
14
15			dnl Checks for programs.
16			AC_PROG_CC
17			AC_PROG_CPP
18			AC_PROG_CXX
19			AC_PROG_MAKE_SET
20			AC_PROG_INSTALL
21
22			dnl Check for PowerPC target CPU.
23			HAVE_PPC=no
24			AC_MSG_CHECKING(for PowerPC target CPU)
25			AC_EGREP_CPP(yes,
26			[
27			#ifdef __powerpc__
28			yes
29			#endif
30			], [AC_MSG_RESULT(yes); HAVE_PPC=yes], AC_MSG_RESULT(no))
31
32			dnl We use mon if possible.
33			MONSRCS=
34			if [[ "x$WANT_MON" = "xyes" ]]; then
35			AC_MSG_CHECKING(for mon)
36			mon_srcdir=../../../mon/src
37			if grep mon_init $mon_srcdir/mon.h >/dev/null 2>/dev/null; then
38			AC_MSG_RESULT(yes)
39			AC_DEFINE(ENABLE_MON)
40			MONSRCS="$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 $mon_srcdir/disass/m68k-opc.c"
41			CXXFLAGS="$CXXFLAGS -I$mon_srcdir -I$mon_srcdir/disass"
42	gbeauche	1.2	AC_CHECK_LIB(ncurses, tgetent, ,
43			AC_CHECK_LIB(termcap, tgetent, ,
44			AC_CHECK_LIB(termlib, tgetent, ,
45			AC_CHECK_LIB(terminfo, tgetent, ,
46			AC_CHECK_LIB(Hcurses, tgetent, ,
47			AC_CHECK_LIB(curses, tgetent))))))
48	cebix	1.1	AC_CHECK_LIB(readline, readline)
49			AC_CHECK_HEADERS(readline.h history.h readline/readline.h readline/history.h)
50			else
51			AC_MSG_RESULT(no)
52			AC_MSG_WARN([Could not find mon, ignoring --with-mon.])
53			WANT_MON=no
54			fi
55			fi
56
57			dnl Checks for libraries.
58			AC_CHECK_LIB(posix4, sem_init)
59
60			dnl We need X11.
61			AC_PATH_XTRA
62			if [[ "x$no_x" = "xyes" ]]; then
63			AC_MSG_ERROR([You need X11 to run SheepShaver.])
64			fi
65			CFLAGS="$CFLAGS $X_CFLAGS"
66			CXXFLAGS="$CXXFLAGS $X_CFLAGS"
67			LIBS="$LIBS $X_PRE_LIBS $X_LIBS -lX11 -lXext $X_EXTRA_LIBS"
68
69			dnl We need pthreads on non-PowerPC systems. Try libpthread first, then libc_r (FreeBSD), then PTL.
70			HAVE_PTHREADS=yes
71			if [[ "x$HAVE_PPC" = "xno" ]]; then
72			AC_CHECK_LIB(pthread, pthread_create, , [
73			AC_CHECK_LIB(c_r, pthread_create, , [
74			AC_CHECK_LIB(PTL, pthread_create, , [
75			AC_MSG_ERROR([You need pthreads to run Basilisk II.])
76			])
77			])
78			])
79			AC_CHECK_FUNCS(pthread_cancel)
80			fi
81
82			dnl If POSIX.4 semaphores are not available, we emulate them with pthread mutexes.
83			SEMSRC=
84			AC_CHECK_FUNCS(sem_init, , [
85	gbeauche	1.4	if test "x$HAVE_PTHREADS" = "xyes"; then
86	cebix	1.1	SEMSRC=posix_sem.cpp
87			fi
88			])
89
90			dnl We use XFree86 DGA if possible.
91			if [[ "x$WANT_XF86_DGA" = "xyes" ]]; then
92			AC_CHECK_LIB(Xxf86dga, XF86DGAQueryExtension, [
93			AC_DEFINE(ENABLE_XF86_DGA)
94			LIBS="$LIBS -lXxf86dga"
95			], [
96			AC_MSG_WARN([Could not find XFree86 DGA extension, ignoring --enable-xf86-dga.])
97			WANT_XF86_DGA=no
98			])
99			fi
100
101			dnl We use XFree86 VidMode if possible.
102			if [[ "x$WANT_XF86_VIDMODE" = "xyes" ]]; then
103			AC_CHECK_LIB(Xxf86vm, XF86VidModeQueryExtension, [
104			AC_DEFINE(ENABLE_XF86_VIDMODE)
105			LIBS="$LIBS -lXxf86vm"
106			], [
107			AC_MSG_WARN([Could not find XFree86 VidMode extension, ignoring --enable-xf86-vidmode.])
108			WANT_XF86_VIDMODE=no
109			])
110			fi
111
112			dnl We use GTK+ if possible.
113			UISRCS=
114			if [[ "x$WANT_GTK" = "xyes" ]]; then
115			AM_PATH_GTK(1.2.0, [
116			AC_DEFINE(ENABLE_GTK)
117			CFLAGS="$CFLAGS $GTK_CFLAGS"
118			CXXFLAGS="$CXXFLAGS $GTK_CFLAGS"
119			LIBS="$LIBS $GTK_LIBS"
120			UISRCS=prefs_editor_gtk.cpp
121			], [
122			AC_MSG_WARN([Could not find GTK+, disabling user interface.])
123			WANT_GTK=no
124			])
125			fi
126
127			dnl We use ESD if possible.
128			if [[ "x$WANT_ESD" = "xyes" ]]; then
129			AM_PATH_ESD(0.2.8, [
130			AC_DEFINE(ENABLE_ESD)
131			CFLAGS="$CFLAGS $ESD_CFLAGS"
132			CXXFLAGS="$CXXFLAGS $ESD_CFLAGS"
133			LIBS="$LIBS $ESD_LIBS"
134			], [
135			AC_MSG_WARN([Could not find ESD, disabling ESD support.])
136			WANT_ESD=no
137			])
138			fi
139
140			dnl Checks for header files.
141			AC_HEADER_STDC
142			AC_HEADER_SYS_WAIT
143	gbeauche	1.4	AC_CHECK_HEADERS(unistd.h fcntl.h sys/time.h sys/mman.h)
144	cebix	1.1
145			dnl Checks for typedefs, structures, and compiler characteristics.
146			AC_C_BIGENDIAN
147			AC_C_CONST
148			AC_C_INLINE
149			AC_CHECK_SIZEOF(short, 2)
150			AC_CHECK_SIZEOF(int, 4)
151			AC_CHECK_SIZEOF(long, 4)
152			AC_CHECK_SIZEOF(long long, 8)
153	gbeauche	1.4	AC_CHECK_SIZEOF(float, 4)
154			AC_CHECK_SIZEOF(double, 8)
155	gbeauche	1.3	AC_CHECK_SIZEOF(void *, 4)
156	cebix	1.1	AC_TYPE_OFF_T
157			AC_CHECK_TYPE(loff_t, off_t)
158			AC_TYPE_SIZE_T
159	gbeauche	1.4	AC_TYPE_SIGNAL
160	cebix	1.1	AC_HEADER_TIME
161			AC_STRUCT_TM
162
163			dnl Checks for library functions.
164			AC_CHECK_FUNCS(strdup cfmakeraw)
165			AC_CHECK_FUNCS(nanosleep clock_gettime timer_create)
166	gbeauche	1.4	AC_CHECK_FUNCS(sigaction signal)
167			AC_CHECK_FUNCS(mmap mprotect munmap)
168			AC_CHECK_FUNCS(vm_allocate vm_deallocate vm_protect)
169	cebix	1.1
170			dnl Select system-dependant sources.
171			if [[ "x$HAVE_PPC" = "xyes" ]]; then
172			SYSSRCS="Linux/paranoia.cpp Linux/sheepthreads.c Linux/asm_linux.S"
173			else
174			SYSSRCS="../emul_ppc/emul_ppc.cpp"
175			fi
176			SYSSRCS="$SYSSRCS $SEMSRCS $UISRCS $MONSRCS"
177	gbeauche	1.4
178			dnl Define a macro that translates a yesno-variable into a C macro definition
179			dnl to be put into the config.h file
180			dnl $1 -- the macro to define
181			dnl $2 -- the value to translate
182			dnl $3 -- template name
183			AC_DEFUN(AC_TRANSLATE_DEFINE, [
184			if [[ "x$2" = "xyes" -o "x$2" = "xguessing yes" ]]; then
185			AC_DEFINE($1, 1, $3)
186			fi
187			])
188
189			dnl Various checks if the system supports vm_allocate() and the like functions.
190			have_mach_vm=no
191			if [[ "x$ac_cv_func_vm_allocate" = "xyes" -a "x$ac_cv_func_vm_deallocate" = "xyes" -a \
192			"x$ac_cv_func_vm_protect" = "xyes" ]]; then
193			have_mach_vm=yes
194			fi
195			AC_TRANSLATE_DEFINE(HAVE_MACH_VM, "$have_mach_vm",
196			[Define if your system has a working vm_allocate()-based memory allocator.])
197
198			dnl Check that vm_allocate(), vm_protect() work
199			if [[ "x$have_mach_vm" = "xyes" ]]; then
200
201			AC_CACHE_CHECK([whether vm_protect works],
202			ac_cv_vm_protect_works, [
203			AC_LANG_SAVE
204			AC_LANG_CPLUSPLUS
205			ac_cv_vm_protect_works=yes
206			dnl First the tests that should segfault
207			for test_def in NONE_READ NONE_WRITE READ_WRITE; do
208			AC_TRY_RUN([
209			#define CONFIGURE_TEST_VM_MAP
210			#define TEST_VM_PROT_$test_def
211			#include "vm_alloc.cpp"
212			], ac_cv_vm_protect_works=no, rm -f core,
213			dnl When cross-compiling, do not assume anything
214			ac_cv_vm_protect_works="guessing no"
215			)
216			done
217			AC_TRY_RUN([
218			#define CONFIGURE_TEST_VM_MAP
219			#define TEST_VM_PROT_RDWR_WRITE
220			#include "vm_alloc.cpp"
221			], , ac_cv_vm_protect_works=no,
222			dnl When cross-compiling, do not assume anything
223			ac_cv_vm_protect_works="guessing no"
224			)
225			AC_LANG_RESTORE
226			]
227			)
228
229			dnl Remove support for vm_allocate() if vm_protect() does not work
230			if [[ "x$have_mach_vm" = "xyes" ]]; then
231			case $ac_cv_vm_protect_works in
232			*yes) have_mach_vm=yes;;
233			*no) have_mach_vm=no;;
234			esac
235			fi
236			AC_TRANSLATE_DEFINE(HAVE_MACH_VM, "$have_mach_vm",
237			[Define if your system has a working vm_allocate()-based memory allocator.])
238
239			fi dnl HAVE_MACH_VM
240
241			dnl Various checks if the system supports mmap() and the like functions.
242			dnl ... and Mach memory allocators are not supported
243			have_mmap_vm=no
244			if [[ "x$ac_cv_func_mmap" = "xyes" -a "x$ac_cv_func_munmap" = "xyes" -a \
245			"x$ac_cv_func_mprotect" = "xyes" ]]; then
246			if [[ "x$have_mach_vm" = "xno" ]]; then
247			have_mmap_vm=yes
248			fi
249			fi
250			AC_TRANSLATE_DEFINE(HAVE_MMAP_VM, "$have_mmap_vm",
251			[Define if your system has a working mmap()-based memory allocator.])
252
253			dnl Check that mmap() and associated functions work.
254			if [[ "x$have_mmap_vm" = "xyes" ]]; then
255
256			dnl Check if we have a working anonymous mmap()
257			AC_CACHE_CHECK([whether mmap supports MAP_ANON],
258			ac_cv_mmap_anon, [
259			AC_LANG_SAVE
260			AC_LANG_CPLUSPLUS
261			AC_TRY_RUN([
262			#define HAVE_MMAP_ANON
263			#define CONFIGURE_TEST_VM_MAP
264			#define TEST_VM_MMAP_ANON
265			#include "vm_alloc.cpp"
266			], ac_cv_mmap_anon=yes, ac_cv_mmap_anon=no,
267			dnl When cross-compiling, do not assume anything.
268			ac_cv_mmap_anon="guessing no"
269			)
270			AC_LANG_RESTORE
271			]
272			)
273			AC_TRANSLATE_DEFINE(HAVE_MMAP_ANON, "$ac_cv_mmap_anon",
274			[Define if <sys/mman.h> defines MAP_ANON and mmap()'ing with MAP_ANON works.])
275
276			AC_CACHE_CHECK([whether mmap supports MAP_ANONYMOUS],
277			ac_cv_mmap_anonymous, [
278			AC_LANG_SAVE
279			AC_LANG_CPLUSPLUS
280			AC_TRY_RUN([
281			#define HAVE_MMAP_ANONYMOUS
282			#define CONFIGURE_TEST_VM_MAP
283			#define TEST_VM_MMAP_ANON
284			#include "vm_alloc.cpp"
285			], ac_cv_mmap_anonymous=yes, ac_cv_mmap_anonymous=no,
286			dnl When cross-compiling, do not assume anything.
287			ac_cv_mmap_anonymous="guessing no"
288			)
289			AC_LANG_RESTORE
290			]
291			)
292			AC_TRANSLATE_DEFINE(HAVE_MMAP_ANONYMOUS, "$ac_cv_mmap_anonymous",
293			[Define if <sys/mman.h> defines MAP_ANONYMOUS and mmap()'ing with MAP_ANONYMOUS works.])
294
295			AC_CACHE_CHECK([whether mprotect works],
296			ac_cv_mprotect_works, [
297			AC_LANG_SAVE
298			AC_LANG_CPLUSPLUS
299			ac_cv_mprotect_works=yes
300			dnl First the tests that should segfault
301			for test_def in NONE_READ NONE_WRITE READ_WRITE; do
302			AC_TRY_RUN([
303			#define CONFIGURE_TEST_VM_MAP
304			#define TEST_VM_PROT_$test_def
305			#include "vm_alloc.cpp"
306			], ac_cv_mprotect_works=no, rm -f core,
307			dnl When cross-compiling, do not assume anything
308			ac_cv_mprotect_works="guessing no"
309			)
310			done
311			AC_TRY_RUN([
312			#define CONFIGURE_TEST_VM_MAP
313			#define TEST_VM_PROT_RDWR_WRITE
314			#include "vm_alloc.cpp"
315			], , ac_cv_mprotect_works=no,
316			dnl When cross-compiling, do not assume anything
317			ac_cv_mprotect_works="guessing no"
318			)
319			AC_LANG_RESTORE
320			]
321			)
322
323			dnl Remove support for mmap() if mprotect() does not work
324			if [[ "x$have_mmap_vm" = "xyes" ]]; then
325			case $ac_cv_mprotect_works in
326			*yes) have_mmap_vm=yes;;
327			*no) have_mmap_vm=no;;
328			esac
329			fi
330			AC_TRANSLATE_DEFINE(HAVE_MMAP_VM, $have_mmap_vm,
331			[Define if your system has a working mmap()-based memory allocator.])
332
333			fi dnl HAVE_MMAP_VM
334
335			dnl Check if we can mmap 0x2000 bytes from 0x0000
336			AC_CACHE_CHECK([whether we can map Low Memory area 0x0000-0x2000],
337			ac_cv_can_map_lm, [
338			AC_LANG_SAVE
339			AC_LANG_CPLUSPLUS
340			AC_TRY_RUN([
341			#include "vm_alloc.cpp"
342			int main(void) { /* returns 0 if we could map the lowmem globals */
343			volatile char * lm = 0;
344			if (vm_init() < 0) exit(1);
345			if (vm_acquire_fixed(0, 0x2000) < 0) exit(1);
346			lm[0] = 'z';
347			if (vm_release((char *)lm, 0x2000) < 0) exit(1);
348			vm_exit(); exit(0);
349			}
350			], ac_cv_can_map_lm=yes, ac_cv_can_map_lm=no,
351			dnl When cross-compiling, do not assume anything.
352			ac_cv_can_map_lm="guessing no"
353			)
354			AC_LANG_RESTORE
355			]
356			)
357
358			dnl Check signal handlers need to be reinstalled
359			AC_CACHE_CHECK([whether signal handlers need to be reinstalled],
360			ac_cv_signal_need_reinstall, [
361			AC_LANG_SAVE
362			AC_LANG_CPLUSPLUS
363			AC_TRY_RUN([
364			#include <stdlib.h>
365			#ifdef HAVE_UNISTD_H
366			#include <unistd.h>
367			#endif
368			#include <signal.h>
369			static int handled_signal = 0;
370			RETSIGTYPE sigusr1_handler(int) { handled_signal++; }
371			int main(void) { /* returns 0 if signals need not to be reinstalled */
372			signal(SIGUSR1, sigusr1_handler); raise(SIGUSR1); raise(SIGUSR1);
373			exit(handled_signal == 2);
374			}
375			], ac_cv_signal_need_reinstall=yes, ac_cv_signal_need_reinstall=no,
376			dnl When cross-compiling, do not assume anything.
377			ac_cv_signal_need_reinstall="guessing yes"
378			)
379			AC_LANG_RESTORE
380			]
381			)
382			AC_TRANSLATE_DEFINE(SIGNAL_NEED_REINSTALL, "$ac_cv_signal_need_reinstall",
383			[Define if your system requires signals to be reinstalled.])
384
385			dnl Check if sigaction handlers need to be reinstalled
386			AC_CACHE_CHECK([whether sigaction handlers need to be reinstalled],
387			ac_cv_sigaction_need_reinstall, [
388			AC_LANG_SAVE
389			AC_LANG_CPLUSPLUS
390			AC_TRY_RUN([
391			#include <stdlib.h>
392			#ifdef HAVE_UNISTD_H
393			#include <unistd.h>
394			#endif
395			#include <signal.h>
396			static int handled_signal = 0;
397			RETSIGTYPE sigusr1_handler(int) { handled_signal++; }
398			typedef RETSIGTYPE (*signal_handler)(int);
399			static signal_handler mysignal(int sig, signal_handler handler) {
400			struct sigaction old_sa;
401			struct sigaction new_sa;
402			new_sa.sa_handler = handler;
403			return ((sigaction(sig,&new_sa,&old_sa) < 0) ? SIG_IGN : old_sa.sa_handler);
404			}
405			int main(void) { /* returns 0 if signals need not to be reinstalled */
406			mysignal(SIGUSR1, sigusr1_handler); raise(SIGUSR1); raise(SIGUSR1);
407			exit(handled_signal == 2);
408			}
409			], ac_cv_sigaction_need_reinstall=yes, ac_cv_sigaction_need_reinstall=no,
410			dnl When cross-compiling, do not assume anything.
411			ac_cv_sigaction_need_reinstall="guessing yes"
412			)
413			AC_LANG_RESTORE
414			]
415			)
416			AC_TRANSLATE_DEFINE(SIGACTION_NEED_REINSTALL, "$ac_cv_sigaction_need_reinstall",
417			[Define if your system requires sigactions to be reinstalled.])
418
419			dnl Check if extended signals are supported.
420			AC_CACHE_CHECK([whether your system supports extended signal handlers],
421			ac_cv_have_extended_signals, [
422			AC_LANG_SAVE
423			AC_LANG_CPLUSPLUS
424			AC_TRY_RUN([
425			#define HAVE_SIGINFO_T 1
426			#define CONFIGURE_TEST_SIGSEGV_RECOVERY
427			#include "vm_alloc.cpp"
428			#include "sigsegv.cpp"
429			], ac_cv_have_extended_signals=yes, ac_cv_have_extended_signals=no,
430			dnl When cross-compiling, do not assume anything.
431			ac_cv_have_extended_signals=no
432			)
433			AC_LANG_RESTORE
434			]
435			)
436			AC_TRANSLATE_DEFINE(HAVE_SIGINFO_T, "$ac_cv_have_extended_signals",
437			[Define if your system support extended signals.])
438
439			dnl Otherwise, check for subterfuges.
440			if [[ "x$ac_cv_have_extended_signals" = "xno" ]]; then
441			AC_CACHE_CHECK([whether we then have a subterfuge for your system],
442			ac_cv_have_sigcontext_hack, [
443			AC_LANG_SAVE
444			AC_LANG_CPLUSPLUS
445			AC_TRY_RUN([
446			#define HAVE_SIGCONTEXT_SUBTERFUGE 1
447			#define CONFIGURE_TEST_SIGSEGV_RECOVERY
448			#include "vm_alloc.cpp"
449			#include "sigsegv.cpp"
450			], ac_cv_have_sigcontext_hack=yes, ac_cv_have_sigcontext_hack=no,
451			dnl When cross-compiling, do not assume anything.
452			ac_cv_have_sigcontext_hack=no
453			)
454			AC_LANG_RESTORE
455			])
456			AC_TRANSLATE_DEFINE(HAVE_SIGCONTEXT_SUBTERFUGE, "$ac_cv_have_sigcontext_hack",
457			[Define if we know a hack to replace siginfo_t->si_addr member.])
458			fi
459
460			dnl Check if we can ignore the fault (instruction skipping in SIGSEGV handler)
461			AC_CACHE_CHECK([whether we can skip instruction in SIGSEGV handler],
462			ac_cv_have_skip_instruction, [
463			AC_LANG_SAVE
464			AC_LANG_CPLUSPLUS
465			AC_TRY_RUN([
466			#define HAVE_SIGSEGV_SKIP_INSTRUCTION 1
467			#define CONFIGURE_TEST_SIGSEGV_RECOVERY
468			#include "vm_alloc.cpp"
469			#include "sigsegv.cpp"
470			], ac_cv_have_skip_instruction=yes, ac_cv_have_skip_instruction=no,
471			dnl When cross-compiling, do not assume anything.
472			ac_cv_have_skip_instruction=no
473			)
474			AC_LANG_RESTORE
475			]
476			)
477			AC_TRANSLATE_DEFINE(HAVE_SIGSEGV_SKIP_INSTRUCTION, "$ac_cv_have_skip_instruction",
478			[Define if we can ignore the fault (instruction skipping in SIGSEGV handler).])
479	cebix	1.1
480			dnl Generate Makefile.
481			AC_SUBST(SYSSRCS)
482			AC_OUTPUT(Makefile)
483
484			dnl Print summary.
485			echo
486			echo SheepShaver configuration summary:
487			echo
488			echo XFree86 DGA support .............. : $WANT_XF86_DGA
489			echo XFree86 VidMode support .......... : $WANT_XF86_VIDMODE
490			echo ESD sound support ................ : $WANT_ESD
491			echo GTK user interface ............... : $WANT_GTK
492			echo mon debugger support ............. : $WANT_MON
493			echo
494			echo "Configuration done. Now type \"make\"."