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 .................. : $ADDRESSING_MODE
echo
echo "Configuration done. Now type \"make\" (or \"gmake\")."
Revision:	1.23
Committed:	2000-09-22T17:14:04Z (23 years, 9 months ago) by gbeauche
Branch:	MAIN
Changes since 1.22:	+307 -101 lines
Log Message:	- added AC_PROG_CC_C_O - added canonical system information - added Video on SEGV signals (VOSF) - added testing for different addressing modes - added check for size of void * in order to have proper [u]inptr types - added the removal of the "-g" flag if GCC is used
#	Content
1	dnl Process this file with autoconf to produce a configure script.
2	dnl Written in 1999 by Christian Bauer et al.
3
4	AC_INIT(main_unix.cpp)
5	AC_PREREQ(2.12)
6	AC_CONFIG_HEADER(config.h)
7
8	dnl Options.
9	AC_ARG_ENABLE(xf86-dga, [ --enable-xf86-dga use the XFree86 DGA extension [default=yes]], [WANT_XF86_DGA=$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	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 "$enableval" in
17	real) ADDRESSING_TEST_ORDER="real";;
18	direct) ADDRESSING_TEST_ORDER="direct";;
19	banks) ADDRESSING_TEST_ORDER="banks";;
20	dnl fastest) ADDRESSING_TEST_ORDER="real direct banks";; gb-- will enable later...
21	fastest) ADDRESSING_TEST_ORDER="direct banks";;
22	*) AC_MSG_ERROR([--enable-mem-addressing takes only one of the following values: fastest, real, direct, banks]);;
23	esac
24	],
25	dnl [ ADDRESSING_TEST_ORDER="real direct banks" gb-- will probably reactivate later
26	[ ADDRESSING_TEST_ORDER="direct banks"
27	])
28	AC_ARG_WITH(esd, [ --with-esd support ESD for sound under Linux/FreeBSD [default=yes]], [WANT_ESD=$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
32	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_$CPU_TYPE"
57
58	dnl Checks for programs.
59	AC_PROG_CC
60	AC_PROG_CC_C_O
61	AC_PROG_CPP
62	AC_PROG_CXX
63	AC_PROG_MAKE_SET
64	AC_PROG_INSTALL
65
66	dnl We use mon if possible.
67	MONSRCS=
68	if [[ "x$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	AC_DEFINE(ENABLE_MON)
73	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="$CXXFLAGS -I../../../mon/src"
75	AC_CHECK_LIB(readline, readline)
76	AC_CHECK_LIB(termcap, tputs)
77	AC_CHECK_HEADERS(readline.h history.h readline/readline.h readline/history.h)
78	else
79	AC_MSG_RESULT(no)
80	AC_MSG_WARN([Could not find mon, ignoring --with-mon.])
81	WANT_MON=no
82	fi
83	fi
84
85	dnl Checks for libraries.
86	AC_CHECK_LIB(posix4, sem_init)
87
88	dnl We need X11.
89	AC_PATH_XTRA
90	if [[ "x$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 $X_EXTRA_LIBS"
96
97	dnl We want pthreads. Try libpthread first, then libc_r (FreeBSD), then PTL.
98	HAVE_PTHREADS=yes
99	AC_CHECK_LIB(pthread, pthread_create, , [
100	AC_CHECK_LIB(c_r, pthread_create, , [
101	AC_CHECK_LIB(PTL, pthread_create, , [
102	HAVE_PTHREADS=no
103	])
104	])
105	])
106	if [[ "x$HAVE_PTHREADS" = "xyes" ]]; then
107	AC_DEFINE(HAVE_PTHREADS)
108	fi
109	AC_CHECK_FUNCS(pthread_cancel)
110
111	dnl If POSIX.4 semaphores are not available, we emulate them with pthread mutexes.
112	SEMSRC=
113	AC_CHECK_FUNCS(sem_init, , [
114	if [ "x$HAVE_PTHREADS" = "xyes" ]; then
115	SEMSRC=posix_sem.cpp
116	fi
117	])
118
119	dnl We use DGA (XFree86 or fbdev) if possible.
120	if [[ "x$WANT_XF86_DGA" = "xyes" ]]; then
121	AC_CHECK_LIB(Xxf86dga, XF86DGAQueryExtension, [
122	AC_DEFINE(ENABLE_XF86_DGA)
123	LIBS="$LIBS -lXxf86dga"
124	if [[ "x$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	], [
129	AC_MSG_WARN([Could not find XFree86 DGA extension, ignoring --enable-xf86-dga.])
130	WANT_XF86_DGA=no
131	])
132	fi
133	if [[ "x$WANT_FBDEV_DGA" = "xyes" ]]; then
134	AC_DEFINE(ENABLE_FBDEV_DGA)
135	fi
136
137	dnl We use XFree86 VidMode if possible.
138	if [[ "x$WANT_XF86_VIDMODE" = "xyes" ]]; then
139	AC_CHECK_LIB(Xxf86vm, XF86VidModeQueryExtension, [
140	AC_DEFINE(ENABLE_XF86_VIDMODE)
141	LIBS="$LIBS -lXxf86vm"
142	], [
143	AC_MSG_WARN([Could not find XFree86 VidMode extension, ignoring --enable-xf86-vidmode.])
144	WANT_XF86_VIDMODE=no
145	])
146	fi
147
148	dnl We use GTK+ if possible.
149	UISRCS=../dummy/prefs_editor_dummy.cpp
150	if [[ "x$WANT_GTK" = "xyes" ]]; then
151	AM_PATH_GTK(1.2.0, [
152	AC_DEFINE(ENABLE_GTK)
153	CFLAGS="$CFLAGS $GTK_CFLAGS"
154	CXXFLAGS="$CXXFLAGS $GTK_CFLAGS"
155	LIBS="$LIBS $GTK_LIBS"
156	UISRCS=prefs_editor_gtk.cpp
157	], [
158	AC_MSG_WARN([Could not find GTK+, disabling user interface.])
159	WANT_GTK=no
160	])
161	fi
162
163	dnl We use ESD if possible.
164	if [[ "x$WANT_ESD" = "xyes" ]]; then
165	AM_PATH_ESD(0.2.8, [
166	AC_DEFINE(ENABLE_ESD)
167	CFLAGS="$CFLAGS $ESD_CFLAGS"
168	CXXFLAGS="$CXXFLAGS $ESD_CFLAGS"
169	LIBS="$LIBS $ESD_LIBS"
170	], [
171	AC_MSG_WARN([Could not find ESD, disabling ESD support.])
172	WANT_ESD=no
173	])
174	fi
175
176	dnl Checks for header files.
177	AC_HEADER_STDC
178	AC_CHECK_HEADERS(unistd.h fcntl.h sys/time.h)
179
180	dnl Checks for typedefs, structures, and compiler characteristics.
181	AC_C_BIGENDIAN
182	AC_C_CONST
183	AC_C_INLINE
184	AC_CHECK_SIZEOF(short, 2)
185	AC_CHECK_SIZEOF(int, 4)
186	AC_CHECK_SIZEOF(long, 4)
187	AC_CHECK_SIZEOF(long long, 8)
188	AC_CHECK_SIZEOF(void *, 4)
189	AC_TYPE_OFF_T
190	AC_CHECK_TYPE(loff_t, off_t)
191	AC_TYPE_SIZE_T
192	AC_TYPE_SIGNAL
193	AC_HEADER_TIME
194	AC_STRUCT_TM
195
196	dnl Checks for library functions.
197	AC_CHECK_FUNCS(strdup cfmakeraw)
198	AC_CHECK_FUNCS(clock_gettime timer_create)
199
200	dnl Select system-dependant source files.
201	SERIALSRC=serial_unix.cpp
202	ETHERSRC=../dummy/ether_dummy.cpp
203	SCSISRC=../dummy/scsi_dummy.cpp
204	AUDIOSRC=../dummy/audio_dummy.cpp
205	EXTRASYSSRCS=
206	SUPPORTS_NATIVE_M68K=no
207	case "$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, $ac_cv_have_sigcontext_hack)
386	fi
387	;;
388	esac
389	fi
390
391	dnl Can we do Video on SEGV Signals ?
392	CAN_VOSF=no
393	if [[ "$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$CAN_VOSF" = "xno" ]]; then
411	continue
412	fi
413	else
414	DEFINES="$DEFINES -DDISABLE_16BIT_VIDMODE"
415	fi
416	else
417	dnl Requires VOSF
418	if [[ "x$CAN_VOSF" = "xno" ]]; then
419	continue
420	fi
421	fi
422	dnl Real addressing will probably work
423	ADDRESSING_MODE="real"
424	WANT_VOSF=yes dnl we can use VOSF and we need it actually
425	DEFINES="$DEFINES -DREAL_ADDRESSING"
426	break
427	;;
428	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	;;
437	banks)
438	dnl Default addressing mode
439	ADDRESSING_MODE="memory banks"
440	break
441	;;
442	*)
443	AC_MSG_ERROR([Internal configure.in script error for $am addressing mode])
444	esac
445	done
446	AC_MSG_RESULT($ADDRESSING_MODE)
447	if [[ "x$ADDRESSING_MODE" = "x" ]]; then
448	AC_MSG_WARN([Sorry, no suitable addressing mode in $ADDRESSING_TEST_ORDER])
449	ADDRESSING_MODE="memory banks"
450	fi
451
452	dnl Since real and direct addressing modes automatically activate VOSF,
453	dnl I put this test here.
454	if [[ "x$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	fi
462
463	dnl Check for GAS.
464	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	dnl Check for GCC 2.7 or higher.
474	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	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	CFLAGS="$CFLAGS -fomit-frame-pointer"
485	CXXFLAGS="$CXXFLAGS -fomit-frame-pointer"
486	fi
487
488	dnl Select appropriate CPU source and REGPARAM define.
489	ASM_OPTIMIZATIONS=none
490	WANT_NATIVE_M68K=no
491	CPUSRCS="cpuemu1.cpp cpuemu2.cpp cpuemu3.cpp cpuemu4.cpp cpuemu5.cpp cpuemu6.cpp cpuemu7.cpp cpuemu8.cpp"
492	FPUSRCS="../uae_cpu/fpp.cpp"
493	if [[ "x$HAVE_GCC27" = "xyes" -a "x$HAVE_I386" = "xyes" ]]; then
494	dnl i386 CPU
495	DEFINES="$DEFINES -DREGPARAM=\"__attribute__((regparm(3)))\""
496	if [[ "x$HAVE_GAS" = "xyes" ]]; then
497	ASM_OPTIMIZATIONS=i386
498	DEFINES="$DEFINES -DX86_ASSEMBLY -DOPTFLAGS"
499	CPUSRCS="../uae_cpu/compiler.cpp cpufast1.s cpufast2.s cpufast3.s cpufast4.s cpufast5.s cpufast6.s cpufast7.s cpufast8.s"
500	FPUSRCS="../uae_cpu/fpu_x86.cpp"
501	fi
502	elif [[ "x$HAVE_GCC27" = "xyes" -a "x$HAVE_SPARC" = "xyes" -a "x$HAVE_GAS" = "xyes" ]]; then
503	dnl SPARC CPU
504	case "$target_os" in
505	solaris*)
506	AC_MSG_CHECKING(SPARC CPU architecture)
507	SPARC_TYPE=`Solaris/which_sparc`
508	AC_MSG_RESULT($SPARC_TYPE)
509	case "$SPARC_TYPE" in
510	SPARC_V8)
511	ASM_OPTIMIZATIONS="SPARC V8 architecture"
512	DEFINES="$DEFINES -DSPARC_V8_ASSEMBLY" dnl -DOPTFLAGS"
513	CFLAGS="$CFLAGS -Wa,-Av8"
514	CXXFLAGS="$CXXFLAGS -Wa,-Av8"
515	;;
516	SPARC_V9)
517	ASM_OPTIMIZATIONS="SPARC V9 architecture"
518	DEFINES="$DEFINES -DSPARC_V9_ASSEMBLY" dnl -DOPTFLAGS"
519	CFLAGS="$CFLAGS -Wa,-Av9"
520	CXXFLAGS="$CXXFLAGS -Wa,-Av9"
521	;;
522	esac
523	;;
524	esac
525	elif [[ "x$HAVE_M68K" = "xyes" -a "x$SUPPORTS_NATIVE_M68K" = "xyes" ]]; then
526	dnl Native m68k, no emulation
527	CPUSRCS=""
528	AC_DEFINE(ENABLE_NATIVE_M68K)
529	WANT_NATIVE_M68K=yes
530	fi
531
532	dnl UAE CPU sources for all non-m68k-native architectures.
533	if [[ "x$WANT_NATIVE_M68K" = "xno" ]]; then
534	CPUINCLUDES="-I../uae_cpu"
535	CPUSRCS="../uae_cpu/basilisk_glue.cpp ../uae_cpu/memory.cpp ../uae_cpu/newcpu.cpp ../uae_cpu/readcpu.cpp $FPUSRCS cpustbl.cpp cpudefs.cpp $CPUSRCS"
536	else
537	CPUINCLUDES="-I../native_cpu"
538	CPUSRCS="asm_support.s"
539	fi
540
541	dnl Remove the "-g" option if set for GCC.
542	if [[ "x$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	dnl Generate Makefile.
549	AC_SUBST(DEFINES)
550	AC_SUBST(SYSSRCS)
551	AC_SUBST(CPUINCLUDES)
552	AC_SUBST(CPUSRCS)
553	AC_OUTPUT(Makefile)
554
555	dnl Print summary.
556	echo
557	echo Basilisk II configuration summary:
558	echo
559	echo XFree86 DGA support .............. : $WANT_XF86_DGA
560	echo XFree86 VidMode support .......... : $WANT_XF86_VIDMODE
561	echo fbdev DGA support ................ : $WANT_FBDEV_DGA
562	echo Enable video on SEGV signals ..... : $WANT_VOSF
563	echo ESD sound support ................ : $WANT_ESD
564	echo GTK user interface ............... : $WANT_GTK
565	echo mon debugger support ............. : $WANT_MON
566	echo Running m68k code natively ....... : $WANT_NATIVE_M68K
567	echo Assembly optimizations ........... : $ASM_OPTIMIZATIONS
568	echo Addressing mode .................. : $ADDRESSING_MODE
569	echo
570	echo "Configuration done. Now type \"make\" (or \"gmake\")."