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$WANT_MON" = "xyes" ]]; then
  AC_MSG_CHECKING(for mon)
  if grep mon_init ../../../mon/src/mon.h >/dev/null 2>/dev/null; then
    AC_MSG_RESULT(yes)
    AC_DEFINE(ENABLE_MON)
    MONSRCS="../../../mon/src/mon.cpp ../../../mon/src/mon_6502.cpp ../../../mon/src/mon_68k.cpp ../../../mon/src/mon_8080.cpp ../../../mon/src/mon_cmd.cpp ../../../mon/src/mon_ppc.cpp ../../../mon/src/mon_x86.cpp"
    CXXFLAGS="$CXXFLAGS -I../../../mon/src"
    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 <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 = 0;
      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 .................. : $ADDRESSING_MODE
echo
echo "Configuration done. Now type \"make\" (or \"gmake\")."
Revision:	1.23
Committed:	2000-09-22T17:14:04Z (24 years, 1 month ago) by gbeauche
Branch:	MAIN
Changes since 1.22:	+307 -101 lines
Log Message:	- added AC_PROG_CC_C_O - added canonical system information - added Video on SEGV signals (VOSF) - added testing for different addressing modes - added check for size of void * in order to have proper [u]inptr types - added the removal of the "-g" flag if GCC is used
#	User	Rev	Content
1	cebix	1.1	dnl Process this file with autoconf to produce a configure script.
2			dnl Written in 1999 by Christian Bauer et al.
3
4			AC_INIT(main_unix.cpp)
5			AC_PREREQ(2.12)
6			AC_CONFIG_HEADER(config.h)
7
8			dnl Options.
9	cebix	1.17	AC_ARG_ENABLE(xf86-dga, [ --enable-xf86-dga use the XFree86 DGA extension [default=yes]], [WANT_XF86_DGA=$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 "$enableval" in
17			real) ADDRESSING_TEST_ORDER="real";;
18			direct) ADDRESSING_TEST_ORDER="direct";;
19			banks) ADDRESSING_TEST_ORDER="banks";;
20			dnl fastest) ADDRESSING_TEST_ORDER="real direct banks";; gb-- will enable later...
21			fastest) ADDRESSING_TEST_ORDER="direct banks";;
22			*) AC_MSG_ERROR([--enable-mem-addressing takes only one of the following values: fastest, real, direct, banks]);;
23			esac
24			],
25			dnl [ ADDRESSING_TEST_ORDER="real direct banks" gb-- will probably reactivate later
26			[ ADDRESSING_TEST_ORDER="direct banks"
27			])
28	cebix	1.17	AC_ARG_WITH(esd, [ --with-esd support ESD for sound under Linux/FreeBSD [default=yes]], [WANT_ESD=$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			if grep mon_init ../../../mon/src/mon.h >/dev/null 2>/dev/null; then
71			AC_MSG_RESULT(yes)
72	cebix	1.19	AC_DEFINE(ENABLE_MON)
73	cebix	1.18	MONSRCS="../../../mon/src/mon.cpp ../../../mon/src/mon_6502.cpp ../../../mon/src/mon_68k.cpp ../../../mon/src/mon_8080.cpp ../../../mon/src/mon_cmd.cpp ../../../mon/src/mon_ppc.cpp ../../../mon/src/mon_x86.cpp"
74			CXXFLAGS="$CXXFLAGS -I../../../mon/src"
75			AC_CHECK_LIB(readline, readline)
76	cebix	1.19	AC_CHECK_LIB(termcap, tputs)
77			AC_CHECK_HEADERS(readline.h history.h readline/readline.h readline/history.h)
78	cebix	1.18	else
79			AC_MSG_RESULT(no)
80			AC_MSG_WARN([Could not find mon, ignoring --with-mon.])
81			WANT_MON=no
82			fi
83	cebix	1.11	fi
84
85	cebix	1.1	dnl Checks for libraries.
86	cebix	1.10	AC_CHECK_LIB(posix4, sem_init)
87
88			dnl We need X11.
89	cebix	1.1	AC_PATH_XTRA
90			if [[ "x$no_x" = "xyes" ]]; then
91			AC_MSG_ERROR([You need X11 to run Basilisk II.])
92			fi
93			CFLAGS="$CFLAGS $X_CFLAGS"
94			CXXFLAGS="$CXXFLAGS $X_CFLAGS"
95			LIBS="$LIBS $X_PRE_LIBS $X_LIBS -lX11 -lXext $X_EXTRA_LIBS"
96
97	cebix	1.19	dnl We want pthreads. Try libpthread first, then libc_r (FreeBSD), then PTL.
98			HAVE_PTHREADS=yes
99	cebix	1.10	AC_CHECK_LIB(pthread, pthread_create, , [
100			AC_CHECK_LIB(c_r, pthread_create, , [
101			AC_CHECK_LIB(PTL, pthread_create, , [
102	cebix	1.19	HAVE_PTHREADS=no
103	cebix	1.10	])
104			])
105			])
106	cebix	1.19	if [[ "x$HAVE_PTHREADS" = "xyes" ]]; then
107			AC_DEFINE(HAVE_PTHREADS)
108			fi
109			AC_CHECK_FUNCS(pthread_cancel)
110	cebix	1.10
111			dnl If POSIX.4 semaphores are not available, we emulate them with pthread mutexes.
112	cebix	1.19	SEMSRC=
113	cebix	1.10	AC_CHECK_FUNCS(sem_init, , [
114	cebix	1.19	if [ "x$HAVE_PTHREADS" = "xyes" ]; then
115			SEMSRC=posix_sem.cpp
116			fi
117	cebix	1.10	])
118	cebix	1.1
119	cebix	1.10	dnl We use DGA (XFree86 or fbdev) if possible.
120	cebix	1.8	if [[ "x$WANT_XF86_DGA" = "xyes" ]]; then
121	cebix	1.10	AC_CHECK_LIB(Xxf86dga, XF86DGAQueryExtension, [
122	cebix	1.19	AC_DEFINE(ENABLE_XF86_DGA)
123	cebix	1.1	LIBS="$LIBS -lXxf86dga"
124	cebix	1.8	if [[ "x$WANT_FBDEV_DGA" = "xyes" ]]; then
125			AC_MSG_WARN([Cannot have both --enable-xf86-dga and --enable-fbdev-dga, ignoring --enable-fbdev-dga.])
126			WANT_FBDEV_DGA=no
127			fi
128	cebix	1.10	], [
129			AC_MSG_WARN([Could not find XFree86 DGA extension, ignoring --enable-xf86-dga.])
130	cebix	1.13	WANT_XF86_DGA=no
131	cebix	1.10	])
132	cebix	1.8	fi
133			if [[ "x$WANT_FBDEV_DGA" = "xyes" ]]; then
134	cebix	1.19	AC_DEFINE(ENABLE_FBDEV_DGA)
135	cebix	1.1	fi
136
137	cebix	1.17	dnl We use XFree86 VidMode if possible.
138			if [[ "x$WANT_XF86_VIDMODE" = "xyes" ]]; then
139			AC_CHECK_LIB(Xxf86vm, XF86VidModeQueryExtension, [
140	cebix	1.19	AC_DEFINE(ENABLE_XF86_VIDMODE)
141	cebix	1.17	LIBS="$LIBS -lXxf86vm"
142			], [
143			AC_MSG_WARN([Could not find XFree86 VidMode extension, ignoring --enable-xf86-vidmode.])
144			WANT_XF86_VIDMODE=no
145			])
146			fi
147
148	cebix	1.1	dnl We use GTK+ if possible.
149	cebix	1.10	UISRCS=../dummy/prefs_editor_dummy.cpp
150	cebix	1.14	if [[ "x$WANT_GTK" = "xyes" ]]; then
151	cebix	1.10	AM_PATH_GTK(1.2.0, [
152	cebix	1.19	AC_DEFINE(ENABLE_GTK)
153	cebix	1.10	CFLAGS="$CFLAGS $GTK_CFLAGS"
154			CXXFLAGS="$CXXFLAGS $GTK_CFLAGS"
155			LIBS="$LIBS $GTK_LIBS"
156			UISRCS=prefs_editor_gtk.cpp
157			], [
158			AC_MSG_WARN([Could not find GTK+, disabling user interface.])
159	cebix	1.14	WANT_GTK=no
160	cebix	1.10	])
161	cebix	1.1	fi
162
163	cebix	1.10	dnl We use ESD if possible.
164			if [[ "x$WANT_ESD" = "xyes" ]]; then
165			AM_PATH_ESD(0.2.8, [
166	cebix	1.19	AC_DEFINE(ENABLE_ESD)
167	cebix	1.10	CFLAGS="$CFLAGS $ESD_CFLAGS"
168			CXXFLAGS="$CXXFLAGS $ESD_CFLAGS"
169			LIBS="$LIBS $ESD_LIBS"
170			], [
171			AC_MSG_WARN([Could not find ESD, disabling ESD support.])
172			WANT_ESD=no
173			])
174	cebix	1.1	fi
175
176			dnl Checks for header files.
177			AC_HEADER_STDC
178			AC_CHECK_HEADERS(unistd.h fcntl.h sys/time.h)
179
180			dnl Checks for typedefs, structures, and compiler characteristics.
181			AC_C_BIGENDIAN
182			AC_C_CONST
183			AC_C_INLINE
184			AC_CHECK_SIZEOF(short, 2)
185			AC_CHECK_SIZEOF(int, 4)
186			AC_CHECK_SIZEOF(long, 4)
187			AC_CHECK_SIZEOF(long long, 8)
188	gbeauche	1.23	AC_CHECK_SIZEOF(void *, 4)
189	cebix	1.1	AC_TYPE_OFF_T
190			AC_CHECK_TYPE(loff_t, off_t)
191			AC_TYPE_SIZE_T
192	gbeauche	1.23	AC_TYPE_SIGNAL
193	cebix	1.1	AC_HEADER_TIME
194			AC_STRUCT_TM
195
196			dnl Checks for library functions.
197			AC_CHECK_FUNCS(strdup cfmakeraw)
198	cebix	1.21	AC_CHECK_FUNCS(clock_gettime timer_create)
199	cebix	1.1
200			dnl Select system-dependant source files.
201	cebix	1.19	SERIALSRC=serial_unix.cpp
202			ETHERSRC=../dummy/ether_dummy.cpp
203			SCSISRC=../dummy/scsi_dummy.cpp
204			AUDIOSRC=../dummy/audio_dummy.cpp
205			EXTRASYSSRCS=
206			SUPPORTS_NATIVE_M68K=no
207	gbeauche	1.23	case "$target_os" in
208			linux*)
209			ETHERSRC=Linux/ether_linux.cpp
210			SCSISRC=Linux/scsi_linux.cpp
211			AUDIOSRC=audio_oss_esd.cpp
212			;;
213			freebsd3.)
214			AUDIOSRC=audio_oss_esd.cpp
215			DEFINES="$DEFINES -DBSD_COMP"
216			dnl Check for the CAM library
217			AC_CHECK_LIB(cam, cam_open_btl, HAVE_LIBCAM=yes, HAVE_LIBCAM=no)
218			if [[ "x$HAVE_LIBCAM" = "xno" ]]; then
219			AC_MSG_WARN([Cannot find libcam for SCSI management, disabling SCSI support.])
220			else
221			dnl Check for the sys kernel includes
222			AC_CHECK_HEADER(/sys/cam/cam.h)
223			if [[ "x$ac_cv_header__sys_cam_cam_h" = "xno" ]]; then
224			dnl In this case I should fix this thing including a "patch"
225			dnl to access directly to the functions in the kernel :) --Orlando
226			AC_MSG_WARN([Cannot find kernel includes for CAM library, disabling SCSI support.])
227			else
228			SCSISRC=FreeBSD/scsi_freebsd.cpp
229			CXXFLAGS="$CXXFLAGS -I/sys"
230			CFLAGS="$CFLAGS -I/sys"
231			LIBS="$LIBS -lcam"
232			DEFINES="$DEFINES -DCAM"
233			fi
234			fi
235			;;
236			freebsd*)
237			DEFINES="$DEFINES -DBSD_COMP"
238			dnl Check for the SCSI library
239			AC_CHECK_LIB(scsi, scsi_open, HAVE_LIBSCSI=yes, HAVE_LIBSCSI=no)
240			if [[ "x$HAVE_LIBSCSI" = "xno" ]]; then
241			AC_MSG_WARN([Cannot find libscsi for SCSI management, disabling SCSI support.])
242			else
243			dnl Check for the sys kernel includes
244			AC_CHECK_HEADER(scsi.h sys/scsiio.h)
245			if [[ "x$ac_cv_header_scsi_h" = "xno" ]]; then
246			AC_MSG_WARN([Cannot find includes for the SCSI library, disabling SCSI support.])
247			else
248			SCSISRC=FreeBSD/scsi_freebsd.cpp
249			LIBS="$LIBS -lscsi"
250			fi
251			fi
252			;;
253			netbsd*)
254			SUPPORTS_NATIVE_M68K=yes
255			;;
256			solaris*)
257			AUDIOSRC=Solaris/audio_solaris.cpp
258			DEFINES="$DEFINES -DBSD_COMP -D_POSIX_PTHREAD_SEMANTICS"
259			;;
260			irix*)
261			EXTRASYSSRCS=Irix/unaligned.c
262			DEFINES="$DEFINES -DCRTSCTS=CNEW_RTSCTS -DB230400=B115200"
263			LIBS="$LIBS -lm"
264			;;
265			esac
266
267			if [[ "x$HAVE_PTHREADS" = "xno" ]]; then
268			dnl Serial, ethernet and audio support needs pthreads
269			AC_MSG_WARN([You don't have pthreads, disabling serial, ethernet and audio support.])
270			SERIALSRC=../dummy/serial_dummy.cpp
271			ETHERSRC=../dummy/ether_dummy.cpp
272			AUDIOSRC=../dummy/audio_dummy.cpp
273			fi
274			SYSSRCS="$SERIALSRC $ETHERSRC $SCSISRC $AUDIOSRC $SEMSRC $UISRCS $MONSRCS $EXTRASYSSRCS"
275
276			dnl Define a macro that translates a yesno-variable into a C macro definition
277			dnl to be put into the config.h file
278			dnl $1 -- the macro to define
279			dnl $2 -- the value to translate
280			AC_DEFUN(AC_TRANSLATE_DEFINE, [
281			if [[ "x$2" = "xyes" ]]; then
282			AC_DEFINE($1)
283			fi
284			])
285
286			dnl Check if we can mmap 0x2000 bytes from 0x0000
287			AC_CACHE_CHECK("whether we can map Low Memory area 0x0000-0x2000",
288			ac_cv_can_map_lm, [
289			AC_LANG_SAVE
290			AC_LANG_CPLUSPLUS
291			AC_TRY_RUN([
292			#include <unistd.h>
293			#include <fcntl.h>
294			#include <sys/mman.h>
295
296			int main()
297			{ int zero_fd; char * lm;
298			if ((zero_fd = open("/dev/zero", O_RDWR)) < 0) exit(1);
299			if ((lm = (char *)mmap((caddr_t)0x0000, 0x2000, PROT_READ \| PROT_WRITE, MAP_FIXED \| MAP_PRIVATE, zero_fd, 0)) == MAP_FAILED) exit(1);
300			lm[0] = 0x12;
301			munmap(lm, 0x2000);
302			close(zero_fd);
303			exit(0);
304			}
305			],
306			[ac_cv_can_map_lm=yes],
307			[ac_cv_can_map_lm=no]
308			)
309			AC_LANG_RESTORE
310			]
311			)
312
313			dnl Check if extended signals are supported.
314			AC_CACHE_CHECK("whether your system supports extended signal handlers",
315			ac_cv_have_extended_signals, [
316			AC_LANG_SAVE
317			AC_LANG_CPLUSPLUS
318			AC_TRY_RUN([
319			#include <unistd.h>
320			#include <signal.h>
321			#include <fcntl.h>
322			#include <sys/mman.h>
323
324			static volatile caddr_t mem = 0;
325			static int zero_fd = -1;
326
327			static RETSIGTYPE segfault_handler(int, siginfo_t * sip, void *)
328			{ if ((caddr_t)(sip->si_addr) != mem) exit(1);
329			munmap(mem, getpagesize()); close(zero_fd); exit(0); }
330
331			int main()
332			{ if ((zero_fd = open("/dev/zero", O_RDWR)) < 0) exit(1);
333			if ((mem = (caddr_t)mmap(0, getpagesize(), PROT_READ, MAP_PRIVATE, zero_fd, 0)) == (caddr_t)MAP_FAILED) exit(1);
334			struct sigaction sa; sa.sa_sigaction = segfault_handler; sa.sa_flags = 0;
335			sigaction(SIGSEGV, &sa, 0);
336			mem[0] = 0;
337			exit(1); // should not be reached
338			}
339			],
340			[ac_cv_have_extended_signals=yes],
341			[ac_cv_have_extended_signals=no]
342			)
343			AC_LANG_RESTORE
344			]
345			)
346			AC_TRANSLATE_DEFINE(HAVE_SIGINFO_T, "$ac_cv_have_extended_signals")
347
348			dnl Otherwise, check for subterfuges.
349			if [[ "x$ac_cv_have_extended_signals" = "xno" ]]; then
350			case "$target_os" in
351			linux*)
352			if [[ "x$HAVE_I386" = "xyes" ]]; then
353			AC_CACHE_CHECK("whether we then have a subterfuge for your system",
354			ac_cv_have_sigcontext_hack, [
355			AC_LANG_SAVE
356			AC_LANG_CPLUSPLUS
357			AC_TRY_RUN([
358			#include <unistd.h>
359			#include <signal.h>
360			#include <fcntl.h>
361			#include <sys/mman.h>
362
363			static volatile caddr_t mem = 0;
364			static int zero_fd = -1;
365
366			static RETSIGTYPE segfault_handler(int, struct sigcontext scs)
367			{ if ((caddr_t)(scs.cr2) != mem) exit(1);
368			munmap(mem, getpagesize()); close(zero_fd); exit(0); }
369
370			int main()
371			{ if ((zero_fd = open("/dev/zero", O_RDWR)) < 0) exit(1);
372			if ((mem = (caddr_t)mmap(0, getpagesize(), PROT_READ, MAP_PRIVATE, zero_fd, 0)) == (caddr_t)MAP_FAILED) exit(1);
373			struct sigaction sa; sa.sa_flags = 0;
374			sa.sa_handler = (RETSIGTYPE (*)(int))segfault_handler;
375			sigaction(SIGSEGV, &sa, 0);
376			mem[0] = 0;
377			exit(1); // should not be reached
378			}
379			],
380			[ac_cv_have_sigcontext_hack=yes],
381			[ac_cv_have_sigcontext_hack=no]
382			)
383			AC_LANG_RESTORE
384			])
385			AC_TRANSLATE_DEFINE(HAVE_SIGCONTEXT_SUBTERFUGE, $ac_cv_have_sigcontext_hack)
386			fi
387	cebix	1.1	;;
388	gbeauche	1.23	esac
389			fi
390
391			dnl Can we do Video on SEGV Signals ?
392			CAN_VOSF=no
393			if [[ "$ac_cv_have_extended_signals" = "yes" -o "$ac_cv_have_sigcontext_hack" = "yes" ]]; then
394			CAN_VOSF=yes
395			fi
396
397			dnl Determine the addressing mode to use
398			ADDRESSING_MODE=""
399			AC_MSG_CHECKING([for the addressing mode to use])
400			for am in $ADDRESSING_TEST_ORDER; do
401			case $am in
402			real)
403			dnl Requires ability to mmap Low Memory globals.
404			if [[ "x$ac_cv_can_map_lm" = "xno" ]]; then
405			continue
406			fi
407			if [[ "x$ac_cv_c_bigendian" = "xyes" ]]; then
408			dnl Requires only VOSF if 16-bit vidmode enable
409			if [[ "x$WANT_16BIT_VIDMODE" = "xyes" ]]; then
410			if [[ "x$CAN_VOSF" = "xno" ]]; then
411			continue
412			fi
413	cebix	1.19	else
414	gbeauche	1.23	DEFINES="$DEFINES -DDISABLE_16BIT_VIDMODE"
415	cebix	1.1	fi
416			else
417	gbeauche	1.23	dnl Requires VOSF
418			if [[ "x$CAN_VOSF" = "xno" ]]; then
419			continue
420	cebix	1.1	fi
421			fi
422	gbeauche	1.23	dnl Real addressing will probably work
423			ADDRESSING_MODE="real"
424			WANT_VOSF=yes dnl we can use VOSF and we need it actually
425			DEFINES="$DEFINES -DREAL_ADDRESSING"
426			break
427	cebix	1.1	;;
428	gbeauche	1.23	direct)
429			dnl Requires VOSF
430			if [[ "x$CAN_VOSF" = "xyes" ]]; then
431			ADDRESSING_MODE="direct"
432			WANT_VOSF=yes dnl we can use VOSF and we need it actually
433			DEFINES="$DEFINES -DDIRECT_ADDRESSING"
434			break
435			fi
436	cebix	1.1	;;
437	gbeauche	1.23	banks)
438			dnl Default addressing mode
439			ADDRESSING_MODE="memory banks"
440			break
441	cebix	1.1	;;
442	gbeauche	1.23	*)
443			AC_MSG_ERROR([Internal configure.in script error for $am addressing mode])
444	cebix	1.1	esac
445	gbeauche	1.23	done
446			AC_MSG_RESULT($ADDRESSING_MODE)
447			if [[ "x$ADDRESSING_MODE" = "x" ]]; then
448			AC_MSG_WARN([Sorry, no suitable addressing mode in $ADDRESSING_TEST_ORDER])
449			ADDRESSING_MODE="memory banks"
450	cebix	1.8	fi
451	gbeauche	1.23
452			dnl Since real and direct addressing modes automatically activate VOSF,
453			dnl I put this test here.
454			if [[ "x$WANT_VOSF" = "xyes" ]]; then
455			if [[ "x$CAN_VOSF" = "xno" ]]; then
456			AC_MSG_WARN([Sorry, your system does not support Video on SEGV signals])
457			WANT_VOSF=no
458			else
459			AC_DEFINE(ENABLE_VOSF)
460			fi
461	cebix	1.19	fi
462	cebix	1.9
463	cebix	1.3	dnl Check for GAS.
464	cebix	1.1	HAVE_GAS=no
465			AC_MSG_CHECKING(for GAS .p2align feature)
466			cat >conftest.S << EOF
467			.text
468			.p2align 5
469			EOF
470			if $CC conftest.S -c -o conftest.o >/dev/null 2>&1 ; then HAVE_GAS=yes; fi
471			AC_MSG_RESULT($HAVE_GAS)
472
473	cebix	1.3	dnl Check for GCC 2.7 or higher.
474	cebix	1.1	HAVE_GCC27=no
475			AC_MSG_CHECKING(for GCC 2.7 or higher)
476			AC_EGREP_CPP(yes,
477			[#if __GNUC__ - 1 > 1 \|\| __GNUC_MINOR__ - 1 > 5
478			yes
479			#endif
480			], [AC_MSG_RESULT(yes); HAVE_GCC27=yes], AC_MSG_RESULT(no))
481
482	cebix	1.19	dnl Set "-fomit-frame-pointer" on i386 GCC 2.7 or higher.
483			if [[ "x$HAVE_GCC27" = "xyes" -a "x$HAVE_I386" = "xyes" ]]; then
484	cebix	1.1	CFLAGS="$CFLAGS -fomit-frame-pointer"
485			CXXFLAGS="$CXXFLAGS -fomit-frame-pointer"
486			fi
487
488	cebix	1.3	dnl Select appropriate CPU source and REGPARAM define.
489	gbeauche	1.23	ASM_OPTIMIZATIONS=none
490	cebix	1.19	WANT_NATIVE_M68K=no
491	cebix	1.9	CPUSRCS="cpuemu1.cpp cpuemu2.cpp cpuemu3.cpp cpuemu4.cpp cpuemu5.cpp cpuemu6.cpp cpuemu7.cpp cpuemu8.cpp"
492	gbeauche	1.22	FPUSRCS="../uae_cpu/fpp.cpp"
493	cebix	1.1	if [[ "x$HAVE_GCC27" = "xyes" -a "x$HAVE_I386" = "xyes" ]]; then
494	cebix	1.9	dnl i386 CPU
495	cebix	1.1	DEFINES="$DEFINES -DREGPARAM=\"__attribute__((regparm(3)))\""
496			if [[ "x$HAVE_GAS" = "xyes" ]]; then
497	gbeauche	1.23	ASM_OPTIMIZATIONS=i386
498			DEFINES="$DEFINES -DX86_ASSEMBLY -DOPTFLAGS"
499	cebix	1.16	CPUSRCS="../uae_cpu/compiler.cpp cpufast1.s cpufast2.s cpufast3.s cpufast4.s cpufast5.s cpufast6.s cpufast7.s cpufast8.s"
500	gbeauche	1.22	FPUSRCS="../uae_cpu/fpu_x86.cpp"
501	cebix	1.1	fi
502	cebix	1.9	elif [[ "x$HAVE_GCC27" = "xyes" -a "x$HAVE_SPARC" = "xyes" -a "x$HAVE_GAS" = "xyes" ]]; then
503			dnl SPARC CPU
504	gbeauche	1.23	case "$target_os" in
505			solaris*)
506	cebix	1.9	AC_MSG_CHECKING(SPARC CPU architecture)
507			SPARC_TYPE=`Solaris/which_sparc`
508			AC_MSG_RESULT($SPARC_TYPE)
509			case "$SPARC_TYPE" in
510			SPARC_V8)
511	gbeauche	1.23	ASM_OPTIMIZATIONS="SPARC V8 architecture"
512			DEFINES="$DEFINES -DSPARC_V8_ASSEMBLY" dnl -DOPTFLAGS"
513	cebix	1.9	CFLAGS="$CFLAGS -Wa,-Av8"
514			CXXFLAGS="$CXXFLAGS -Wa,-Av8"
515			;;
516			SPARC_V9)
517	gbeauche	1.23	ASM_OPTIMIZATIONS="SPARC V9 architecture"
518			DEFINES="$DEFINES -DSPARC_V9_ASSEMBLY" dnl -DOPTFLAGS"
519	cebix	1.9	CFLAGS="$CFLAGS -Wa,-Av9"
520			CXXFLAGS="$CXXFLAGS -Wa,-Av9"
521			;;
522			esac
523			;;
524			esac
525	cebix	1.19	elif [[ "x$HAVE_M68K" = "xyes" -a "x$SUPPORTS_NATIVE_M68K" = "xyes" ]]; then
526			dnl Native m68k, no emulation
527			CPUSRCS=""
528			AC_DEFINE(ENABLE_NATIVE_M68K)
529			WANT_NATIVE_M68K=yes
530	cebix	1.1	fi
531	cebix	1.9
532	cebix	1.19	dnl UAE CPU sources for all non-m68k-native architectures.
533			if [[ "x$WANT_NATIVE_M68K" = "xno" ]]; then
534	cebix	1.20	CPUINCLUDES="-I../uae_cpu"
535	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 $CPUSRCS"
536	cebix	1.19	else
537			CPUINCLUDES="-I../native_cpu"
538			CPUSRCS="asm_support.s"
539			fi
540	cebix	1.1
541	gbeauche	1.23	dnl Remove the "-g" option if set for GCC.
542			if [[ "x$HAVE_GCC27" = "xyes" ]]; then
543			dnl gb-- Probably not the cleanest way to take
544			CFLAGS=`echo $CFLAGS \| sed -e 's/ -g / /;s/^-g / /;s/ -g$/ /;s/^-g$//'`
545			CXXFLAGS=`echo $CXXFLAGS \| sed -e 's/ -g / /;s/^-g / /;s/ -g$/ /;s/^-g$//'`
546			fi
547
548	cebix	1.3	dnl Generate Makefile.
549	cebix	1.1	AC_SUBST(DEFINES)
550			AC_SUBST(SYSSRCS)
551			AC_SUBST(CPUINCLUDES)
552			AC_SUBST(CPUSRCS)
553			AC_OUTPUT(Makefile)
554	cebix	1.12
555			dnl Print summary.
556			echo
557			echo Basilisk II configuration summary:
558			echo
559			echo XFree86 DGA support .............. : $WANT_XF86_DGA
560	cebix	1.17	echo XFree86 VidMode support .......... : $WANT_XF86_VIDMODE
561	cebix	1.12	echo fbdev DGA support ................ : $WANT_FBDEV_DGA
562	gbeauche	1.23	echo Enable video on SEGV signals ..... : $WANT_VOSF
563	cebix	1.12	echo ESD sound support ................ : $WANT_ESD
564	cebix	1.14	echo GTK user interface ............... : $WANT_GTK
565	cebix	1.12	echo mon debugger support ............. : $WANT_MON
566	cebix	1.19	echo Running m68k code natively ....... : $WANT_NATIVE_M68K
567	gbeauche	1.23	echo Assembly optimizations ........... : $ASM_OPTIMIZATIONS
568			echo Addressing mode .................. : $ADDRESSING_MODE
569	cebix	1.12	echo
570	cebix	1.19	echo "Configuration done. Now type \"make\" (or \"gmake\")."