src/Unix/configure.in

dnl Process this file with autoconf to produce a configure script.
dnl Written in 1999 by Christian Bauer et al.

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(fbdev-dga,     [  --enable-fbdev-dga      use direct frame buffer access via /dev/fb [default=yes]], [WANT_FBDEV_DGA=$enableval], [WANT_FBDEV_DGA=yes])
AC_ARG_ENABLE(vosf,          [  --enable-vosf           enable video on SEGV signals [default=yes]], [WANT_VOSF=$enableval], [WANT_VOSF=no])
AC_ARG_ENABLE(16bit-vidmode, [  --enable-16bit-vidmode  enable 16-bit video if possible [default=yes]], [WANT_16BIT_VIDMODE=$enableval], [WANT_16BIT_VIDMODE=yes])
AC_ARG_ENABLE(addressing,
[  --enable-addressing=mode specify the addressing mode to use [default=fastest]], 
[ case "$enableval" in
    real)       ADDRESSING_TEST_ORDER="real";;
    direct)     ADDRESSING_TEST_ORDER="direct";;
    banks)      ADDRESSING_TEST_ORDER="banks";;
dnl fastest)    ADDRESSING_TEST_ORDER="real direct banks";; gb-- will enable later...
    fastest)    ADDRESSING_TEST_ORDER="direct banks";;
    *)          AC_MSG_ERROR([--enable-mem-addressing takes only one of the following values: fastest, real, direct, banks]);;
  esac
],
dnl [ ADDRESSING_TEST_ORDER="real direct banks" gb-- will probably reactivate later
[ ADDRESSING_TEST_ORDER="direct banks"
])
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 Canonical system information.
AC_CANONICAL_HOST
AC_CANONICAL_TARGET

dnl Target OS type (target is host if not cross-compiling).
case "$target_os" in
  linux*)       OS_TYPE=linux;;
  netbsd*)      OS_TYPE=netbsd;;
  freebsd*)     OS_TYPE=freebsd;;
  solaris*)     OS_TYPE=solaris;;
  *)            OS_TYPE=`echo $target_os | sed -e 's/-/_/'`;;
esac
DEFINES="$DEFINES -DOS_$OS_TYPE"

dnl Target CPU type.
HAVE_I386=no
HAVE_M68K=no
HAVE_SPARC=no
case "$target_cpu" in
  i386* | i486* | i586* | i686* | i786* ) CPU_TYPE=i386 HAVE_I386=yes;;
  m68k* ) CPU_TYPE=m68k HAVE_M68K=yes;;
  sparc* ) CPU_TYPE=sparc HAVE_SPARC=yes;;
  *) CPU_TYPE=`echo $target_cpu | sed -e 's/-/_/'`;;
esac
DEFINES="$DEFINES -DCPU_$CPU_TYPE"

dnl Checks for programs.
AC_PROG_CC
AC_PROG_CC_C_O
AC_PROG_CPP
AC_PROG_CXX
AC_PROG_MAKE_SET
AC_PROG_INSTALL

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_8080.cpp $mon_srcdir/mon_cmd.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(readline, readline)
    AC_CHECK_LIB(termcap, tputs)
    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$no_x" = "xyes" ]]; then
  AC_MSG_ERROR([You need X11 to run Basilisk II.])
fi
CFLAGS="$CFLAGS $X_CFLAGS"
CXXFLAGS="$CXXFLAGS $X_CFLAGS"
LIBS="$LIBS $X_PRE_LIBS $X_LIBS -lX11 -lXext $X_EXTRA_LIBS"

dnl We want pthreads. Try libpthread first, then libc_r (FreeBSD), then PTL.
HAVE_PTHREADS=yes
AC_CHECK_LIB(pthread, pthread_create, , [
  AC_CHECK_LIB(c_r, pthread_create, , [
    AC_CHECK_LIB(PTL, pthread_create, , [
      HAVE_PTHREADS=no
    ])
  ])
])
if [[ "x$HAVE_PTHREADS" = "xyes" ]]; then
  AC_DEFINE(HAVE_PTHREADS)
fi
AC_CHECK_FUNCS(pthread_cancel)

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

dnl We use DGA (XFree86 or fbdev) if possible.
if [[ "x$WANT_XF86_DGA" = "xyes" ]]; then
  AC_CHECK_LIB(Xxf86dga, XF86DGAQueryExtension, [
    AC_DEFINE(ENABLE_XF86_DGA)
    LIBS="$LIBS -lXxf86dga"
    if [[ "x$WANT_FBDEV_DGA" = "xyes" ]]; then
      AC_MSG_WARN([Cannot have both --enable-xf86-dga and --enable-fbdev-dga, ignoring --enable-fbdev-dga.])
      WANT_FBDEV_DGA=no
    fi
  ], [
    AC_MSG_WARN([Could not find XFree86 DGA extension, ignoring --enable-xf86-dga.])
    WANT_XF86_DGA=no
  ])
fi
if [[ "x$WANT_FBDEV_DGA" = "xyes" ]]; then
  AC_DEFINE(ENABLE_FBDEV_DGA)
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=../dummy/prefs_editor_dummy.cpp
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_CHECK_HEADERS(unistd.h fcntl.h sys/time.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(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(clock_gettime timer_create)

dnl Select system-dependant source files.
SERIALSRC=serial_unix.cpp
ETHERSRC=../dummy/ether_dummy.cpp
SCSISRC=../dummy/scsi_dummy.cpp
AUDIOSRC=../dummy/audio_dummy.cpp
EXTRASYSSRCS=
SUPPORTS_NATIVE_M68K=no
case "$target_os" in
linux*)
  ETHERSRC=Linux/ether_linux.cpp
  SCSISRC=Linux/scsi_linux.cpp
  AUDIOSRC=audio_oss_esd.cpp
  ;;
freebsd*3.*)
  AUDIOSRC=audio_oss_esd.cpp
  DEFINES="$DEFINES -DBSD_COMP"
  dnl Check for the CAM library
  AC_CHECK_LIB(cam, cam_open_btl, HAVE_LIBCAM=yes, HAVE_LIBCAM=no) 
  if [[ "x$HAVE_LIBCAM" = "xno" ]]; then
    AC_MSG_WARN([Cannot find libcam for SCSI management, disabling SCSI support.])
  else
    dnl Check for the sys kernel includes
    AC_CHECK_HEADER(/sys/cam/cam.h)
    if [[ "x$ac_cv_header__sys_cam_cam_h" = "xno" ]]; then
      dnl In this case I should fix this thing including a "patch"
      dnl to access directly to the functions in the kernel :) --Orlando
      AC_MSG_WARN([Cannot find kernel includes for CAM library, disabling SCSI support.])
    else
      SCSISRC=FreeBSD/scsi_freebsd.cpp
      CXXFLAGS="$CXXFLAGS -I/sys"
      CFLAGS="$CFLAGS -I/sys"
      LIBS="$LIBS -lcam"
      DEFINES="$DEFINES -DCAM"
    fi
  fi
  ;;
freebsd*)
  DEFINES="$DEFINES -DBSD_COMP"
  dnl Check for the SCSI library
  AC_CHECK_LIB(scsi, scsi_open, HAVE_LIBSCSI=yes, HAVE_LIBSCSI=no)
  if [[ "x$HAVE_LIBSCSI" = "xno" ]]; then
    AC_MSG_WARN([Cannot find libscsi for SCSI management, disabling SCSI support.])
  else
    dnl Check for the sys kernel includes
    AC_CHECK_HEADER(scsi.h sys/scsiio.h)
    if [[ "x$ac_cv_header_scsi_h" = "xno" ]]; then
      AC_MSG_WARN([Cannot find includes for the SCSI library, disabling SCSI support.])
    else
      SCSISRC=FreeBSD/scsi_freebsd.cpp
      LIBS="$LIBS -lscsi"
    fi
  fi
  ;;
netbsd*)
  SUPPORTS_NATIVE_M68K=yes
  ;;
solaris*)
  AUDIOSRC=Solaris/audio_solaris.cpp
  DEFINES="$DEFINES -DBSD_COMP -D_POSIX_PTHREAD_SEMANTICS"
  ;;
irix*)
  EXTRASYSSRCS=Irix/unaligned.c
  DEFINES="$DEFINES -DCRTSCTS=CNEW_RTSCTS -DB230400=B115200"
  LIBS="$LIBS -lm"
  ;;
esac

if [[ "x$HAVE_PTHREADS" = "xno" ]]; then
  dnl Serial, ethernet and audio support needs pthreads
  AC_MSG_WARN([You don't have pthreads, disabling serial, ethernet and audio support.])
  SERIALSRC=../dummy/serial_dummy.cpp
  ETHERSRC=../dummy/ether_dummy.cpp
  AUDIOSRC=../dummy/audio_dummy.cpp
fi
SYSSRCS="$SERIALSRC $ETHERSRC $SCSISRC $AUDIOSRC $SEMSRC $UISRCS $MONSRCS $EXTRASYSSRCS"

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
AC_DEFUN(AC_TRANSLATE_DEFINE, [
    if [[ "x$2" = "xyes" ]]; then
        AC_DEFINE($1)
    fi
])

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 <unistd.h>
    #include <fcntl.h>
    #include <sys/mman.h>
    
    int main()
    { int zero_fd; char * lm;
      if ((zero_fd = open("/dev/zero", O_RDWR)) < 0) exit(1);
      if ((lm = (char *)mmap((caddr_t)0x0000, 0x2000, PROT_READ | PROT_WRITE, MAP_FIXED | MAP_PRIVATE, zero_fd, 0)) == MAP_FAILED) exit(1);
      lm[0] = 0x12;
          munmap(lm, 0x2000);
      close(zero_fd);
      exit(0);
    }
  ],
  [ac_cv_can_map_lm=yes],
  [ac_cv_can_map_lm=no]
  )
  AC_LANG_RESTORE
  ]
)

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([
    #include <unistd.h>
    #include <stdlib.h>
    #include <signal.h>
    #include <fcntl.h>
    #include <sys/mman.h>

    static volatile caddr_t mem = 0;
    static int zero_fd = -1;

    static RETSIGTYPE segfault_handler(int, siginfo_t * sip, void *)
    { if ((caddr_t)(sip->si_addr) != mem) exit(1);
      munmap(mem, getpagesize()); close(zero_fd); exit(0); }

    int main()
    { if ((zero_fd = open("/dev/zero", O_RDWR)) < 0) exit(1);
      if ((mem = (caddr_t)mmap(0, getpagesize(), PROT_READ, MAP_PRIVATE, zero_fd, 0)) == (caddr_t)MAP_FAILED) exit(1);
      struct sigaction sa; sa.sa_sigaction = segfault_handler; sa.sa_flags = SA_SIGINFO;
      sigaction(SIGSEGV, &sa, 0);
      mem[0] = 0;
      exit(1); // should not be reached
    }
  ],
  [ac_cv_have_extended_signals=yes],
  [ac_cv_have_extended_signals=no]
  )
  AC_LANG_RESTORE
  ]
)
AC_TRANSLATE_DEFINE(HAVE_SIGINFO_T, "$ac_cv_have_extended_signals")
 
dnl Otherwise, check for subterfuges.
if [[ "x$ac_cv_have_extended_signals" = "xno" ]]; then
  case "$target_os" in
    linux*)
      if [[ "x$HAVE_I386" = "xyes" ]]; 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([
            #include <unistd.h>
            #include <signal.h>
            #include <fcntl.h>
            #include <sys/mman.h>

            static volatile caddr_t mem = 0;
            static int zero_fd = -1;

            static RETSIGTYPE segfault_handler(int, struct sigcontext scs)
            { if ((caddr_t)(scs.cr2) != mem) exit(1);
              munmap(mem, getpagesize()); close(zero_fd); exit(0); }

            int main()
            { if ((zero_fd = open("/dev/zero", O_RDWR)) < 0) exit(1);
              if ((mem = (caddr_t)mmap(0, getpagesize(), PROT_READ, MAP_PRIVATE, zero_fd, 0)) == (caddr_t)MAP_FAILED) exit(1);
              struct sigaction sa; sa.sa_flags = 0;
              sa.sa_handler = (RETSIGTYPE (*)(int))segfault_handler;
              sigaction(SIGSEGV, &sa, 0);
              mem[0] = 0;
              exit(1); // should not be reached
            }
          ],
          [ac_cv_have_sigcontext_hack=yes],
          [ac_cv_have_sigcontext_hack=no]
          )
          AC_LANG_RESTORE
        ])
        AC_TRANSLATE_DEFINE(HAVE_SIGCONTEXT_SUBTERFUGE, $ac_cv_have_sigcontext_hack)
      fi
    ;;
  esac
fi

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 Determine the addressing mode to use
ADDRESSING_MODE=""
AC_MSG_CHECKING([for the addressing mode to use])
for am in $ADDRESSING_TEST_ORDER; do
  case $am in
  real)
    dnl Requires ability to mmap Low Memory globals.
    if [[ "x$ac_cv_can_map_lm" = "xno" ]]; then
      continue
    fi
    if [[ "x$ac_cv_c_bigendian" = "xyes" ]]; then
      dnl Requires only VOSF if 16-bit vidmode enable
      if [[ "x$WANT_16BIT_VIDMODE" = "xyes" ]]; then
        if [[ "x$CAN_VOSF" = "xno" ]]; then
          continue
        fi
      else
        DEFINES="$DEFINES -DDISABLE_16BIT_VIDMODE"
      fi
    else
      dnl Requires VOSF
      if [[ "x$CAN_VOSF" = "xno" ]]; then
        continue
      fi
    fi
    dnl Real addressing will probably work
    ADDRESSING_MODE="real"
    WANT_VOSF=yes dnl we can use VOSF and we need it actually
    DEFINES="$DEFINES -DREAL_ADDRESSING"
    break
    ;;
  direct)
    dnl Requires VOSF
    if [[ "x$CAN_VOSF" = "xyes" ]]; then
      ADDRESSING_MODE="direct"
      WANT_VOSF=yes dnl we can use VOSF and we need it actually
      DEFINES="$DEFINES -DDIRECT_ADDRESSING"
      break
    fi
    ;;
  banks)
    dnl Default addressing mode
    ADDRESSING_MODE="memory banks"
    break
    ;;
  *)
    AC_MSG_ERROR([Internal configure.in script error for $am addressing mode])
  esac
done
AC_MSG_RESULT($ADDRESSING_MODE)
if [[ "x$ADDRESSING_MODE" = "x" ]]; then
  AC_MSG_WARN([Sorry, no suitable addressing mode in $ADDRESSING_TEST_ORDER])
  ADDRESSING_MODE="memory banks"
fi

dnl Since real and direct addressing modes automatically activate VOSF,
dnl I put this test here.
if [[ "x$WANT_VOSF" = "xyes" ]]; then
  if [[ "x$CAN_VOSF" = "xno" ]]; then
    AC_MSG_WARN([Sorry, your system does not support Video on SEGV signals])
    WANT_VOSF=no
  else
    AC_DEFINE(ENABLE_VOSF)
  fi
fi

dnl Check for GAS.
HAVE_GAS=no
AC_MSG_CHECKING(for GAS .p2align feature)
cat >conftest.S << EOF
        .text
        .p2align 5
EOF
if $CC conftest.S -c -o conftest.o >/dev/null 2>&1 ; then HAVE_GAS=yes; fi
AC_MSG_RESULT($HAVE_GAS)

dnl Check for GCC 2.7 or higher.
HAVE_GCC27=no
AC_MSG_CHECKING(for GCC 2.7 or higher)
AC_EGREP_CPP(yes,
[#if __GNUC__ - 1 > 1 || __GNUC_MINOR__ - 1 > 5
  yes
#endif
], [AC_MSG_RESULT(yes); HAVE_GCC27=yes], AC_MSG_RESULT(no))

dnl Set "-fomit-frame-pointer" on i386 GCC 2.7 or higher.
if [[ "x$HAVE_GCC27" = "xyes" -a "x$HAVE_I386" = "xyes" ]]; then
  CFLAGS="$CFLAGS -fomit-frame-pointer"
  CXXFLAGS="$CXXFLAGS -fomit-frame-pointer"
fi

dnl Select appropriate CPU source and REGPARAM define.
ASM_OPTIMIZATIONS=none
WANT_NATIVE_M68K=no
CPUSRCS="cpuemu1.cpp cpuemu2.cpp cpuemu3.cpp cpuemu4.cpp cpuemu5.cpp cpuemu6.cpp cpuemu7.cpp cpuemu8.cpp"
FPUSRCS="../uae_cpu/fpp.cpp"
if [[ "x$HAVE_GCC27" = "xyes" -a "x$HAVE_I386" = "xyes" ]]; then
  dnl i386 CPU
  DEFINES="$DEFINES -DREGPARAM=\"__attribute__((regparm(3)))\""
  if [[ "x$HAVE_GAS" = "xyes" ]]; then
    ASM_OPTIMIZATIONS=i386
    DEFINES="$DEFINES -DX86_ASSEMBLY -DOPTFLAGS"
    CPUSRCS="../uae_cpu/compiler.cpp cpufast1.s cpufast2.s cpufast3.s cpufast4.s cpufast5.s cpufast6.s cpufast7.s cpufast8.s"
    FPUSRCS="../uae_cpu/fpu_x86.cpp"
  fi
elif [[ "x$HAVE_GCC27" = "xyes" -a "x$HAVE_SPARC" = "xyes" -a "x$HAVE_GAS" = "xyes" ]]; then
  dnl SPARC CPU
  case "$target_os" in
  solaris*)
    AC_MSG_CHECKING(SPARC CPU architecture)
    SPARC_TYPE=`Solaris/which_sparc`
    AC_MSG_RESULT($SPARC_TYPE)
    case "$SPARC_TYPE" in
    SPARC_V8)
          ASM_OPTIMIZATIONS="SPARC V8 architecture"
      DEFINES="$DEFINES -DSPARC_V8_ASSEMBLY" dnl -DOPTFLAGS"
      CFLAGS="$CFLAGS -Wa,-Av8"
      CXXFLAGS="$CXXFLAGS -Wa,-Av8"
      ;;
    SPARC_V9)
          ASM_OPTIMIZATIONS="SPARC V9 architecture"
      DEFINES="$DEFINES -DSPARC_V9_ASSEMBLY" dnl -DOPTFLAGS"
      CFLAGS="$CFLAGS -Wa,-Av9"
      CXXFLAGS="$CXXFLAGS -Wa,-Av9"
      ;;
    esac
    ;;
  esac
elif [[ "x$HAVE_M68K" = "xyes" -a "x$SUPPORTS_NATIVE_M68K" = "xyes" ]]; then
  dnl Native m68k, no emulation
  CPUSRCS=""
  AC_DEFINE(ENABLE_NATIVE_M68K)
  WANT_NATIVE_M68K=yes
fi

dnl UAE CPU sources for all non-m68k-native architectures.
if [[ "x$WANT_NATIVE_M68K" = "xno" ]]; then
  CPUINCLUDES="-I../uae_cpu"
  CPUSRCS="../uae_cpu/basilisk_glue.cpp ../uae_cpu/memory.cpp ../uae_cpu/newcpu.cpp ../uae_cpu/readcpu.cpp $FPUSRCS cpustbl.cpp cpudefs.cpp $CPUSRCS"
else
  CPUINCLUDES="-I../native_cpu"
  CPUSRCS="asm_support.s"
fi

dnl Remove the "-g" option if set for GCC.
if [[ "x$HAVE_GCC27" = "xyes" ]]; then
        dnl gb-- Probably not the cleanest way to take
        CFLAGS=`echo $CFLAGS | sed -e 's/ -g / /;s/^-g / /;s/ -g$/ /;s/^-g$//'`
        CXXFLAGS=`echo $CXXFLAGS | sed -e 's/ -g / /;s/^-g / /;s/ -g$/ /;s/^-g$//'`
fi

dnl Generate Makefile.
AC_SUBST(DEFINES)
AC_SUBST(SYSSRCS)
AC_SUBST(CPUINCLUDES)
AC_SUBST(CPUSRCS)
AC_OUTPUT(Makefile)

dnl Print summary.
echo
echo Basilisk II configuration summary:
echo
echo XFree86 DGA support .............. : $WANT_XF86_DGA
echo XFree86 VidMode support .......... : $WANT_XF86_VIDMODE
echo fbdev DGA support ................ : $WANT_FBDEV_DGA
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 Running m68k code natively ....... : $WANT_NATIVE_M68K
echo Assembly optimizations ........... : $ASM_OPTIMIZATIONS
echo Addressing mode .................. : $ADDRESSING_MODE
echo
echo "Configuration done. Now type \"make\" (or \"gmake\")."
Revision:	1.25
Committed:	2000-10-08T18:41:34Z (24 years, 1 month ago) by cebix
Branch:	MAIN
Changes since 1.24:	+4 -3 lines
Log Message:	added SA_SIGINFO to sa_flags when sa_sigaction is used
#	User	Rev	Content
1	cebix	1.1	dnl Process this file with autoconf to produce a configure script.
2			dnl Written in 1999 by Christian Bauer et al.
3
4			AC_INIT(main_unix.cpp)
5			AC_PREREQ(2.12)
6			AC_CONFIG_HEADER(config.h)
7
8			dnl Options.
9	cebix	1.17	AC_ARG_ENABLE(xf86-dga, [ --enable-xf86-dga use the XFree86 DGA extension [default=yes]], [WANT_XF86_DGA=$enableval], [WANT_XF86_DGA=yes])
10			AC_ARG_ENABLE(xf86-vidmode, [ --enable-xf86-vidmode use the XFree86 VidMode extension [default=yes]], [WANT_XF86_VIDMODE=$enableval], [WANT_XF86_VIDMODE=yes])
11			AC_ARG_ENABLE(fbdev-dga, [ --enable-fbdev-dga use direct frame buffer access via /dev/fb [default=yes]], [WANT_FBDEV_DGA=$enableval], [WANT_FBDEV_DGA=yes])
12	gbeauche	1.23	AC_ARG_ENABLE(vosf, [ --enable-vosf enable video on SEGV signals [default=yes]], [WANT_VOSF=$enableval], [WANT_VOSF=no])
13			AC_ARG_ENABLE(16bit-vidmode, [ --enable-16bit-vidmode enable 16-bit video if possible [default=yes]], [WANT_16BIT_VIDMODE=$enableval], [WANT_16BIT_VIDMODE=yes])
14			AC_ARG_ENABLE(addressing,
15			[ --enable-addressing=mode specify the addressing mode to use [default=fastest]],
16			[ case "$enableval" in
17	cebix	1.24	real) ADDRESSING_TEST_ORDER="real";;
18			direct) ADDRESSING_TEST_ORDER="direct";;
19			banks) ADDRESSING_TEST_ORDER="banks";;
20			dnl fastest) ADDRESSING_TEST_ORDER="real direct banks";; gb-- will enable later...
21			fastest) ADDRESSING_TEST_ORDER="direct banks";;
22			*) AC_MSG_ERROR([--enable-mem-addressing takes only one of the following values: fastest, real, direct, banks]);;
23	gbeauche	1.23	esac
24			],
25			dnl [ ADDRESSING_TEST_ORDER="real direct banks" gb-- will probably reactivate later
26			[ ADDRESSING_TEST_ORDER="direct banks"
27			])
28	cebix	1.17	AC_ARG_WITH(esd, [ --with-esd support ESD for sound under Linux/FreeBSD [default=yes]], [WANT_ESD=$withval], [WANT_ESD=yes])
29			AC_ARG_WITH(gtk, [ --with-gtk use GTK user interface [default=yes]], [WANT_GTK=$withval], [WANT_GTK=yes])
30			AC_ARG_WITH(mon, [ --with-mon use mon as debugger [default=yes]], [WANT_MON=$withval], [WANT_MON=yes])
31	cebix	1.1
32	gbeauche	1.23	dnl Canonical system information.
33			AC_CANONICAL_HOST
34			AC_CANONICAL_TARGET
35
36			dnl Target OS type (target is host if not cross-compiling).
37			case "$target_os" in
38			linux*) OS_TYPE=linux;;
39			netbsd*) OS_TYPE=netbsd;;
40			freebsd*) OS_TYPE=freebsd;;
41			solaris*) OS_TYPE=solaris;;
42			*) OS_TYPE=`echo $target_os \| sed -e 's/-/_/'`;;
43			esac
44			DEFINES="$DEFINES -DOS_$OS_TYPE"
45
46			dnl Target CPU type.
47			HAVE_I386=no
48			HAVE_M68K=no
49			HAVE_SPARC=no
50			case "$target_cpu" in
51			i386* \| i486* \| i586* \| i686* \| i786* ) CPU_TYPE=i386 HAVE_I386=yes;;
52			m68k* ) CPU_TYPE=m68k HAVE_M68K=yes;;
53			sparc* ) CPU_TYPE=sparc HAVE_SPARC=yes;;
54			*) CPU_TYPE=`echo $target_cpu \| sed -e 's/-/_/'`;;
55			esac
56			DEFINES="$DEFINES -DCPU_$CPU_TYPE"
57
58	cebix	1.1	dnl Checks for programs.
59			AC_PROG_CC
60	gbeauche	1.23	AC_PROG_CC_C_O
61	cebix	1.4	AC_PROG_CPP
62	cebix	1.1	AC_PROG_CXX
63			AC_PROG_MAKE_SET
64			AC_PROG_INSTALL
65
66	cebix	1.11	dnl We use mon if possible.
67			MONSRCS=
68	cebix	1.18	if [[ "x$WANT_MON" = "xyes" ]]; then
69			AC_MSG_CHECKING(for mon)
70	cebix	1.24	mon_srcdir=../../../mon/src
71			if grep mon_init $mon_srcdir/mon.h >/dev/null 2>/dev/null; then
72	cebix	1.18	AC_MSG_RESULT(yes)
73	cebix	1.19	AC_DEFINE(ENABLE_MON)
74	cebix	1.24	MONSRCS="$mon_srcdir/mon.cpp $mon_srcdir/mon_6502.cpp $mon_srcdir/mon_8080.cpp $mon_srcdir/mon_cmd.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 $mon_srcdir/disass/m68k-opc.c"
75			CXXFLAGS="$CXXFLAGS -I$mon_srcdir -I$mon_srcdir/disass"
76	cebix	1.18	AC_CHECK_LIB(readline, readline)
77	cebix	1.19	AC_CHECK_LIB(termcap, tputs)
78			AC_CHECK_HEADERS(readline.h history.h readline/readline.h readline/history.h)
79	cebix	1.18	else
80			AC_MSG_RESULT(no)
81			AC_MSG_WARN([Could not find mon, ignoring --with-mon.])
82			WANT_MON=no
83			fi
84	cebix	1.11	fi
85
86	cebix	1.1	dnl Checks for libraries.
87	cebix	1.10	AC_CHECK_LIB(posix4, sem_init)
88
89			dnl We need X11.
90	cebix	1.1	AC_PATH_XTRA
91			if [[ "x$no_x" = "xyes" ]]; then
92			AC_MSG_ERROR([You need X11 to run Basilisk II.])
93			fi
94			CFLAGS="$CFLAGS $X_CFLAGS"
95			CXXFLAGS="$CXXFLAGS $X_CFLAGS"
96			LIBS="$LIBS $X_PRE_LIBS $X_LIBS -lX11 -lXext $X_EXTRA_LIBS"
97
98	cebix	1.19	dnl We want pthreads. Try libpthread first, then libc_r (FreeBSD), then PTL.
99			HAVE_PTHREADS=yes
100	cebix	1.10	AC_CHECK_LIB(pthread, pthread_create, , [
101			AC_CHECK_LIB(c_r, pthread_create, , [
102			AC_CHECK_LIB(PTL, pthread_create, , [
103	cebix	1.19	HAVE_PTHREADS=no
104	cebix	1.10	])
105			])
106			])
107	cebix	1.19	if [[ "x$HAVE_PTHREADS" = "xyes" ]]; then
108			AC_DEFINE(HAVE_PTHREADS)
109			fi
110			AC_CHECK_FUNCS(pthread_cancel)
111	cebix	1.10
112			dnl If POSIX.4 semaphores are not available, we emulate them with pthread mutexes.
113	cebix	1.19	SEMSRC=
114	cebix	1.10	AC_CHECK_FUNCS(sem_init, , [
115	cebix	1.19	if [ "x$HAVE_PTHREADS" = "xyes" ]; then
116			SEMSRC=posix_sem.cpp
117			fi
118	cebix	1.10	])
119	cebix	1.1
120	cebix	1.10	dnl We use DGA (XFree86 or fbdev) if possible.
121	cebix	1.8	if [[ "x$WANT_XF86_DGA" = "xyes" ]]; then
122	cebix	1.10	AC_CHECK_LIB(Xxf86dga, XF86DGAQueryExtension, [
123	cebix	1.19	AC_DEFINE(ENABLE_XF86_DGA)
124	cebix	1.1	LIBS="$LIBS -lXxf86dga"
125	cebix	1.8	if [[ "x$WANT_FBDEV_DGA" = "xyes" ]]; then
126			AC_MSG_WARN([Cannot have both --enable-xf86-dga and --enable-fbdev-dga, ignoring --enable-fbdev-dga.])
127			WANT_FBDEV_DGA=no
128			fi
129	cebix	1.10	], [
130			AC_MSG_WARN([Could not find XFree86 DGA extension, ignoring --enable-xf86-dga.])
131	cebix	1.13	WANT_XF86_DGA=no
132	cebix	1.10	])
133	cebix	1.8	fi
134			if [[ "x$WANT_FBDEV_DGA" = "xyes" ]]; then
135	cebix	1.19	AC_DEFINE(ENABLE_FBDEV_DGA)
136	cebix	1.1	fi
137
138	cebix	1.17	dnl We use XFree86 VidMode if possible.
139			if [[ "x$WANT_XF86_VIDMODE" = "xyes" ]]; then
140			AC_CHECK_LIB(Xxf86vm, XF86VidModeQueryExtension, [
141	cebix	1.19	AC_DEFINE(ENABLE_XF86_VIDMODE)
142	cebix	1.17	LIBS="$LIBS -lXxf86vm"
143			], [
144			AC_MSG_WARN([Could not find XFree86 VidMode extension, ignoring --enable-xf86-vidmode.])
145			WANT_XF86_VIDMODE=no
146			])
147			fi
148
149	cebix	1.1	dnl We use GTK+ if possible.
150	cebix	1.10	UISRCS=../dummy/prefs_editor_dummy.cpp
151	cebix	1.14	if [[ "x$WANT_GTK" = "xyes" ]]; then
152	cebix	1.10	AM_PATH_GTK(1.2.0, [
153	cebix	1.19	AC_DEFINE(ENABLE_GTK)
154	cebix	1.10	CFLAGS="$CFLAGS $GTK_CFLAGS"
155			CXXFLAGS="$CXXFLAGS $GTK_CFLAGS"
156			LIBS="$LIBS $GTK_LIBS"
157			UISRCS=prefs_editor_gtk.cpp
158			], [
159			AC_MSG_WARN([Could not find GTK+, disabling user interface.])
160	cebix	1.14	WANT_GTK=no
161	cebix	1.10	])
162	cebix	1.1	fi
163
164	cebix	1.10	dnl We use ESD if possible.
165			if [[ "x$WANT_ESD" = "xyes" ]]; then
166			AM_PATH_ESD(0.2.8, [
167	cebix	1.19	AC_DEFINE(ENABLE_ESD)
168	cebix	1.10	CFLAGS="$CFLAGS $ESD_CFLAGS"
169			CXXFLAGS="$CXXFLAGS $ESD_CFLAGS"
170			LIBS="$LIBS $ESD_LIBS"
171			], [
172			AC_MSG_WARN([Could not find ESD, disabling ESD support.])
173			WANT_ESD=no
174			])
175	cebix	1.1	fi
176
177			dnl Checks for header files.
178			AC_HEADER_STDC
179			AC_CHECK_HEADERS(unistd.h fcntl.h sys/time.h)
180
181			dnl Checks for typedefs, structures, and compiler characteristics.
182			AC_C_BIGENDIAN
183			AC_C_CONST
184			AC_C_INLINE
185			AC_CHECK_SIZEOF(short, 2)
186			AC_CHECK_SIZEOF(int, 4)
187			AC_CHECK_SIZEOF(long, 4)
188			AC_CHECK_SIZEOF(long long, 8)
189	gbeauche	1.23	AC_CHECK_SIZEOF(void *, 4)
190	cebix	1.1	AC_TYPE_OFF_T
191			AC_CHECK_TYPE(loff_t, off_t)
192			AC_TYPE_SIZE_T
193	gbeauche	1.23	AC_TYPE_SIGNAL
194	cebix	1.1	AC_HEADER_TIME
195			AC_STRUCT_TM
196
197			dnl Checks for library functions.
198			AC_CHECK_FUNCS(strdup cfmakeraw)
199	cebix	1.21	AC_CHECK_FUNCS(clock_gettime timer_create)
200	cebix	1.1
201			dnl Select system-dependant source files.
202	cebix	1.19	SERIALSRC=serial_unix.cpp
203			ETHERSRC=../dummy/ether_dummy.cpp
204			SCSISRC=../dummy/scsi_dummy.cpp
205			AUDIOSRC=../dummy/audio_dummy.cpp
206			EXTRASYSSRCS=
207			SUPPORTS_NATIVE_M68K=no
208	gbeauche	1.23	case "$target_os" in
209			linux*)
210			ETHERSRC=Linux/ether_linux.cpp
211			SCSISRC=Linux/scsi_linux.cpp
212			AUDIOSRC=audio_oss_esd.cpp
213			;;
214			freebsd3.)
215			AUDIOSRC=audio_oss_esd.cpp
216			DEFINES="$DEFINES -DBSD_COMP"
217			dnl Check for the CAM library
218			AC_CHECK_LIB(cam, cam_open_btl, HAVE_LIBCAM=yes, HAVE_LIBCAM=no)
219			if [[ "x$HAVE_LIBCAM" = "xno" ]]; then
220			AC_MSG_WARN([Cannot find libcam for SCSI management, disabling SCSI support.])
221			else
222			dnl Check for the sys kernel includes
223			AC_CHECK_HEADER(/sys/cam/cam.h)
224			if [[ "x$ac_cv_header__sys_cam_cam_h" = "xno" ]]; then
225			dnl In this case I should fix this thing including a "patch"
226			dnl to access directly to the functions in the kernel :) --Orlando
227			AC_MSG_WARN([Cannot find kernel includes for CAM library, disabling SCSI support.])
228			else
229			SCSISRC=FreeBSD/scsi_freebsd.cpp
230			CXXFLAGS="$CXXFLAGS -I/sys"
231			CFLAGS="$CFLAGS -I/sys"
232			LIBS="$LIBS -lcam"
233			DEFINES="$DEFINES -DCAM"
234			fi
235			fi
236			;;
237			freebsd*)
238			DEFINES="$DEFINES -DBSD_COMP"
239			dnl Check for the SCSI library
240			AC_CHECK_LIB(scsi, scsi_open, HAVE_LIBSCSI=yes, HAVE_LIBSCSI=no)
241			if [[ "x$HAVE_LIBSCSI" = "xno" ]]; then
242			AC_MSG_WARN([Cannot find libscsi for SCSI management, disabling SCSI support.])
243			else
244			dnl Check for the sys kernel includes
245			AC_CHECK_HEADER(scsi.h sys/scsiio.h)
246			if [[ "x$ac_cv_header_scsi_h" = "xno" ]]; then
247			AC_MSG_WARN([Cannot find includes for the SCSI library, disabling SCSI support.])
248			else
249			SCSISRC=FreeBSD/scsi_freebsd.cpp
250			LIBS="$LIBS -lscsi"
251			fi
252			fi
253			;;
254			netbsd*)
255			SUPPORTS_NATIVE_M68K=yes
256			;;
257			solaris*)
258			AUDIOSRC=Solaris/audio_solaris.cpp
259			DEFINES="$DEFINES -DBSD_COMP -D_POSIX_PTHREAD_SEMANTICS"
260			;;
261			irix*)
262			EXTRASYSSRCS=Irix/unaligned.c
263			DEFINES="$DEFINES -DCRTSCTS=CNEW_RTSCTS -DB230400=B115200"
264			LIBS="$LIBS -lm"
265			;;
266			esac
267
268			if [[ "x$HAVE_PTHREADS" = "xno" ]]; then
269			dnl Serial, ethernet and audio support needs pthreads
270			AC_MSG_WARN([You don't have pthreads, disabling serial, ethernet and audio support.])
271			SERIALSRC=../dummy/serial_dummy.cpp
272			ETHERSRC=../dummy/ether_dummy.cpp
273			AUDIOSRC=../dummy/audio_dummy.cpp
274			fi
275			SYSSRCS="$SERIALSRC $ETHERSRC $SCSISRC $AUDIOSRC $SEMSRC $UISRCS $MONSRCS $EXTRASYSSRCS"
276
277			dnl Define a macro that translates a yesno-variable into a C macro definition
278			dnl to be put into the config.h file
279			dnl $1 -- the macro to define
280			dnl $2 -- the value to translate
281			AC_DEFUN(AC_TRANSLATE_DEFINE, [
282			if [[ "x$2" = "xyes" ]]; then
283			AC_DEFINE($1)
284			fi
285			])
286
287			dnl Check if we can mmap 0x2000 bytes from 0x0000
288			AC_CACHE_CHECK("whether we can map Low Memory area 0x0000-0x2000",
289			ac_cv_can_map_lm, [
290			AC_LANG_SAVE
291			AC_LANG_CPLUSPLUS
292			AC_TRY_RUN([
293			#include <unistd.h>
294			#include <fcntl.h>
295			#include <sys/mman.h>
296
297			int main()
298			{ int zero_fd; char * lm;
299			if ((zero_fd = open("/dev/zero", O_RDWR)) < 0) exit(1);
300			if ((lm = (char *)mmap((caddr_t)0x0000, 0x2000, PROT_READ \| PROT_WRITE, MAP_FIXED \| MAP_PRIVATE, zero_fd, 0)) == MAP_FAILED) exit(1);
301			lm[0] = 0x12;
302			munmap(lm, 0x2000);
303			close(zero_fd);
304			exit(0);
305			}
306			],
307			[ac_cv_can_map_lm=yes],
308			[ac_cv_can_map_lm=no]
309			)
310			AC_LANG_RESTORE
311			]
312			)
313
314			dnl Check if extended signals are supported.
315			AC_CACHE_CHECK("whether your system supports extended signal handlers",
316			ac_cv_have_extended_signals, [
317			AC_LANG_SAVE
318			AC_LANG_CPLUSPLUS
319			AC_TRY_RUN([
320			#include <unistd.h>
321	cebix	1.25	#include <stdlib.h>
322	gbeauche	1.23	#include <signal.h>
323			#include <fcntl.h>
324			#include <sys/mman.h>
325
326			static volatile caddr_t mem = 0;
327			static int zero_fd = -1;
328
329			static RETSIGTYPE segfault_handler(int, siginfo_t * sip, void *)
330			{ if ((caddr_t)(sip->si_addr) != mem) exit(1);
331			munmap(mem, getpagesize()); close(zero_fd); exit(0); }
332
333			int main()
334			{ if ((zero_fd = open("/dev/zero", O_RDWR)) < 0) exit(1);
335			if ((mem = (caddr_t)mmap(0, getpagesize(), PROT_READ, MAP_PRIVATE, zero_fd, 0)) == (caddr_t)MAP_FAILED) exit(1);
336	cebix	1.25	struct sigaction sa; sa.sa_sigaction = segfault_handler; sa.sa_flags = SA_SIGINFO;
337	gbeauche	1.23	sigaction(SIGSEGV, &sa, 0);
338			mem[0] = 0;
339			exit(1); // should not be reached
340			}
341			],
342			[ac_cv_have_extended_signals=yes],
343			[ac_cv_have_extended_signals=no]
344			)
345			AC_LANG_RESTORE
346			]
347			)
348			AC_TRANSLATE_DEFINE(HAVE_SIGINFO_T, "$ac_cv_have_extended_signals")
349
350			dnl Otherwise, check for subterfuges.
351			if [[ "x$ac_cv_have_extended_signals" = "xno" ]]; then
352			case "$target_os" in
353			linux*)
354			if [[ "x$HAVE_I386" = "xyes" ]]; then
355			AC_CACHE_CHECK("whether we then have a subterfuge for your system",
356			ac_cv_have_sigcontext_hack, [
357			AC_LANG_SAVE
358			AC_LANG_CPLUSPLUS
359			AC_TRY_RUN([
360			#include <unistd.h>
361			#include <signal.h>
362			#include <fcntl.h>
363			#include <sys/mman.h>
364
365			static volatile caddr_t mem = 0;
366			static int zero_fd = -1;
367
368			static RETSIGTYPE segfault_handler(int, struct sigcontext scs)
369			{ if ((caddr_t)(scs.cr2) != mem) exit(1);
370			munmap(mem, getpagesize()); close(zero_fd); exit(0); }
371
372			int main()
373			{ if ((zero_fd = open("/dev/zero", O_RDWR)) < 0) exit(1);
374			if ((mem = (caddr_t)mmap(0, getpagesize(), PROT_READ, MAP_PRIVATE, zero_fd, 0)) == (caddr_t)MAP_FAILED) exit(1);
375			struct sigaction sa; sa.sa_flags = 0;
376	cebix	1.25	sa.sa_handler = (RETSIGTYPE (*)(int))segfault_handler;
377	gbeauche	1.23	sigaction(SIGSEGV, &sa, 0);
378			mem[0] = 0;
379			exit(1); // should not be reached
380			}
381			],
382			[ac_cv_have_sigcontext_hack=yes],
383			[ac_cv_have_sigcontext_hack=no]
384			)
385			AC_LANG_RESTORE
386			])
387	cebix	1.25	AC_TRANSLATE_DEFINE(HAVE_SIGCONTEXT_SUBTERFUGE, $ac_cv_have_sigcontext_hack)
388	gbeauche	1.23	fi
389	cebix	1.1	;;
390	gbeauche	1.23	esac
391			fi
392
393			dnl Can we do Video on SEGV Signals ?
394			CAN_VOSF=no
395			if [[ "$ac_cv_have_extended_signals" = "yes" -o "$ac_cv_have_sigcontext_hack" = "yes" ]]; then
396			CAN_VOSF=yes
397			fi
398
399			dnl Determine the addressing mode to use
400			ADDRESSING_MODE=""
401			AC_MSG_CHECKING([for the addressing mode to use])
402			for am in $ADDRESSING_TEST_ORDER; do
403			case $am in
404			real)
405			dnl Requires ability to mmap Low Memory globals.
406			if [[ "x$ac_cv_can_map_lm" = "xno" ]]; then
407			continue
408			fi
409			if [[ "x$ac_cv_c_bigendian" = "xyes" ]]; then
410			dnl Requires only VOSF if 16-bit vidmode enable
411			if [[ "x$WANT_16BIT_VIDMODE" = "xyes" ]]; then
412			if [[ "x$CAN_VOSF" = "xno" ]]; then
413			continue
414			fi
415	cebix	1.19	else
416	gbeauche	1.23	DEFINES="$DEFINES -DDISABLE_16BIT_VIDMODE"
417	cebix	1.1	fi
418			else
419	gbeauche	1.23	dnl Requires VOSF
420			if [[ "x$CAN_VOSF" = "xno" ]]; then
421			continue
422	cebix	1.1	fi
423			fi
424	gbeauche	1.23	dnl Real addressing will probably work
425			ADDRESSING_MODE="real"
426			WANT_VOSF=yes dnl we can use VOSF and we need it actually
427			DEFINES="$DEFINES -DREAL_ADDRESSING"
428			break
429	cebix	1.1	;;
430	gbeauche	1.23	direct)
431			dnl Requires VOSF
432			if [[ "x$CAN_VOSF" = "xyes" ]]; then
433			ADDRESSING_MODE="direct"
434			WANT_VOSF=yes dnl we can use VOSF and we need it actually
435			DEFINES="$DEFINES -DDIRECT_ADDRESSING"
436			break
437			fi
438	cebix	1.1	;;
439	gbeauche	1.23	banks)
440			dnl Default addressing mode
441			ADDRESSING_MODE="memory banks"
442			break
443	cebix	1.1	;;
444	gbeauche	1.23	*)
445			AC_MSG_ERROR([Internal configure.in script error for $am addressing mode])
446	cebix	1.1	esac
447	gbeauche	1.23	done
448			AC_MSG_RESULT($ADDRESSING_MODE)
449			if [[ "x$ADDRESSING_MODE" = "x" ]]; then
450			AC_MSG_WARN([Sorry, no suitable addressing mode in $ADDRESSING_TEST_ORDER])
451			ADDRESSING_MODE="memory banks"
452	cebix	1.8	fi
453	gbeauche	1.23
454			dnl Since real and direct addressing modes automatically activate VOSF,
455			dnl I put this test here.
456			if [[ "x$WANT_VOSF" = "xyes" ]]; then
457			if [[ "x$CAN_VOSF" = "xno" ]]; then
458			AC_MSG_WARN([Sorry, your system does not support Video on SEGV signals])
459			WANT_VOSF=no
460			else
461			AC_DEFINE(ENABLE_VOSF)
462			fi
463	cebix	1.19	fi
464	cebix	1.9
465	cebix	1.3	dnl Check for GAS.
466	cebix	1.1	HAVE_GAS=no
467			AC_MSG_CHECKING(for GAS .p2align feature)
468			cat >conftest.S << EOF
469			.text
470			.p2align 5
471			EOF
472			if $CC conftest.S -c -o conftest.o >/dev/null 2>&1 ; then HAVE_GAS=yes; fi
473			AC_MSG_RESULT($HAVE_GAS)
474
475	cebix	1.3	dnl Check for GCC 2.7 or higher.
476	cebix	1.1	HAVE_GCC27=no
477			AC_MSG_CHECKING(for GCC 2.7 or higher)
478			AC_EGREP_CPP(yes,
479			[#if __GNUC__ - 1 > 1 \|\| __GNUC_MINOR__ - 1 > 5
480			yes
481			#endif
482			], [AC_MSG_RESULT(yes); HAVE_GCC27=yes], AC_MSG_RESULT(no))
483
484	cebix	1.19	dnl Set "-fomit-frame-pointer" on i386 GCC 2.7 or higher.
485			if [[ "x$HAVE_GCC27" = "xyes" -a "x$HAVE_I386" = "xyes" ]]; then
486	cebix	1.1	CFLAGS="$CFLAGS -fomit-frame-pointer"
487			CXXFLAGS="$CXXFLAGS -fomit-frame-pointer"
488			fi
489
490	cebix	1.3	dnl Select appropriate CPU source and REGPARAM define.
491	gbeauche	1.23	ASM_OPTIMIZATIONS=none
492	cebix	1.19	WANT_NATIVE_M68K=no
493	cebix	1.9	CPUSRCS="cpuemu1.cpp cpuemu2.cpp cpuemu3.cpp cpuemu4.cpp cpuemu5.cpp cpuemu6.cpp cpuemu7.cpp cpuemu8.cpp"
494	gbeauche	1.22	FPUSRCS="../uae_cpu/fpp.cpp"
495	cebix	1.1	if [[ "x$HAVE_GCC27" = "xyes" -a "x$HAVE_I386" = "xyes" ]]; then
496	cebix	1.9	dnl i386 CPU
497	cebix	1.1	DEFINES="$DEFINES -DREGPARAM=\"__attribute__((regparm(3)))\""
498			if [[ "x$HAVE_GAS" = "xyes" ]]; then
499	gbeauche	1.23	ASM_OPTIMIZATIONS=i386
500			DEFINES="$DEFINES -DX86_ASSEMBLY -DOPTFLAGS"
501	cebix	1.16	CPUSRCS="../uae_cpu/compiler.cpp cpufast1.s cpufast2.s cpufast3.s cpufast4.s cpufast5.s cpufast6.s cpufast7.s cpufast8.s"
502	gbeauche	1.22	FPUSRCS="../uae_cpu/fpu_x86.cpp"
503	cebix	1.1	fi
504	cebix	1.9	elif [[ "x$HAVE_GCC27" = "xyes" -a "x$HAVE_SPARC" = "xyes" -a "x$HAVE_GAS" = "xyes" ]]; then
505			dnl SPARC CPU
506	gbeauche	1.23	case "$target_os" in
507			solaris*)
508	cebix	1.9	AC_MSG_CHECKING(SPARC CPU architecture)
509			SPARC_TYPE=`Solaris/which_sparc`
510			AC_MSG_RESULT($SPARC_TYPE)
511			case "$SPARC_TYPE" in
512			SPARC_V8)
513	gbeauche	1.23	ASM_OPTIMIZATIONS="SPARC V8 architecture"
514			DEFINES="$DEFINES -DSPARC_V8_ASSEMBLY" dnl -DOPTFLAGS"
515	cebix	1.9	CFLAGS="$CFLAGS -Wa,-Av8"
516			CXXFLAGS="$CXXFLAGS -Wa,-Av8"
517			;;
518			SPARC_V9)
519	gbeauche	1.23	ASM_OPTIMIZATIONS="SPARC V9 architecture"
520			DEFINES="$DEFINES -DSPARC_V9_ASSEMBLY" dnl -DOPTFLAGS"
521	cebix	1.9	CFLAGS="$CFLAGS -Wa,-Av9"
522			CXXFLAGS="$CXXFLAGS -Wa,-Av9"
523			;;
524			esac
525			;;
526			esac
527	cebix	1.19	elif [[ "x$HAVE_M68K" = "xyes" -a "x$SUPPORTS_NATIVE_M68K" = "xyes" ]]; then
528			dnl Native m68k, no emulation
529			CPUSRCS=""
530			AC_DEFINE(ENABLE_NATIVE_M68K)
531			WANT_NATIVE_M68K=yes
532	cebix	1.1	fi
533	cebix	1.9
534	cebix	1.19	dnl UAE CPU sources for all non-m68k-native architectures.
535			if [[ "x$WANT_NATIVE_M68K" = "xno" ]]; then
536	cebix	1.20	CPUINCLUDES="-I../uae_cpu"
537	gbeauche	1.22	CPUSRCS="../uae_cpu/basilisk_glue.cpp ../uae_cpu/memory.cpp ../uae_cpu/newcpu.cpp ../uae_cpu/readcpu.cpp $FPUSRCS cpustbl.cpp cpudefs.cpp $CPUSRCS"
538	cebix	1.19	else
539			CPUINCLUDES="-I../native_cpu"
540			CPUSRCS="asm_support.s"
541			fi
542	cebix	1.1
543	gbeauche	1.23	dnl Remove the "-g" option if set for GCC.
544			if [[ "x$HAVE_GCC27" = "xyes" ]]; then
545			dnl gb-- Probably not the cleanest way to take
546			CFLAGS=`echo $CFLAGS \| sed -e 's/ -g / /;s/^-g / /;s/ -g$/ /;s/^-g$//'`
547			CXXFLAGS=`echo $CXXFLAGS \| sed -e 's/ -g / /;s/^-g / /;s/ -g$/ /;s/^-g$//'`
548			fi
549
550	cebix	1.3	dnl Generate Makefile.
551	cebix	1.1	AC_SUBST(DEFINES)
552			AC_SUBST(SYSSRCS)
553			AC_SUBST(CPUINCLUDES)
554			AC_SUBST(CPUSRCS)
555			AC_OUTPUT(Makefile)
556	cebix	1.12
557			dnl Print summary.
558			echo
559			echo Basilisk II configuration summary:
560			echo
561			echo XFree86 DGA support .............. : $WANT_XF86_DGA
562	cebix	1.17	echo XFree86 VidMode support .......... : $WANT_XF86_VIDMODE
563	cebix	1.12	echo fbdev DGA support ................ : $WANT_FBDEV_DGA
564	gbeauche	1.23	echo Enable video on SEGV signals ..... : $WANT_VOSF
565	cebix	1.12	echo ESD sound support ................ : $WANT_ESD
566	cebix	1.14	echo GTK user interface ............... : $WANT_GTK
567	cebix	1.12	echo mon debugger support ............. : $WANT_MON
568	cebix	1.19	echo Running m68k code natively ....... : $WANT_NATIVE_M68K
569	gbeauche	1.23	echo Assembly optimizations ........... : $ASM_OPTIMIZATIONS
570			echo Addressing mode .................. : $ADDRESSING_MODE
571	cebix	1.12	echo
572	cebix	1.19	echo "Configuration done. Now type \"make\" (or \"gmake\")."