src/Windows/configure.ac

dnl Process this file with autoconf to produce a configure script.
dnl Written in 2002 by Christian Bauer et al.

AC_INIT([Basilisk II], 1.0, [Christian.Bauer@uni-mainz.de], BasiliskII)
AC_CONFIG_SRCDIR(main_windows.cpp)
AC_CONFIG_AUX_DIR(../Unix)
AC_PREREQ(2.52)
AC_CONFIG_HEADER(config.h)

dnl Aliases for PACKAGE and VERSION macros.
AC_DEFINE_UNQUOTED(PACKAGE, "$PACKAGE_NAME", [Define this program name.])
AC_DEFINE_UNQUOTED(VERSION, "$PACKAGE_VERSION", [Define this program version.])

dnl SDL options.
AC_ARG_ENABLE(sdl-static,    [  --enable-sdl-static     use SDL static libraries for linking [default=no]], [WANT_SDL_STATIC=$enableval], [WANT_SDL_STATIC=no])

dnl JIT compiler options.
AC_ARG_ENABLE(jit-compiler,  [  --enable-jit-compiler   enable JIT compiler [default=yes]], [WANT_JIT=$enableval], [WANT_JIT=yes])
AC_ARG_ENABLE(jit-debug,     [  --enable-jit-debug      activate native code disassemblers [default=no]], [WANT_JIT_DEBUG=$enableval], [WANT_JIT_DEBUG=no])

dnl FPU emulation core.
AC_ARG_ENABLE(fpe,
[  --enable-fpe=FPE        specify which fpu emulator to use [default=auto]],
[ case "$enableval" in
    dnl default is always ieee, if architecture has this fp format
    auto)       FPE_CORE_TEST_ORDER="ieee uae";;
    ieee)       FPE_CORE_TEST_ORDER="ieee";;
    uae)        FPE_CORE_TEST_ORDER="uae";;
    x86)        FPE_CORE_TEST_ORDER="x86";;
        *)              AC_MSG_ERROR([--enable-fpe takes only one of the following values: auto, x86, ieee, uae]);;
  esac
],
[ FPE_CORE_TEST_ORDER="ieee uae"
])

dnl External packages.
AC_ARG_WITH(gtk,             [  --with-gtk              use GTK user interface [default=yes]], [WANT_GTK=$withval], [WANT_GTK=yes])

dnl Addressing modes.
AC_ARG_ENABLE(addressing,
[  --enable-addressing=AM  specify the addressing mode to use [default=fastest]],
[ case "$enableval" in
    direct)     ADDRESSING_TEST_ORDER="direct";;
    banks)      ADDRESSING_TEST_ORDER="banks";;
    fastest)ADDRESSING_TEST_ORDER="direct banks";;
    *)          AC_MSG_ERROR([--enable-addressing takes only one of the following values: fastest, direct, banks]);;
  esac
],
[ ADDRESSING_TEST_ORDER="direct banks"
])

dnl Canonical system information.
AC_CANONICAL_HOST
AC_CANONICAL_TARGET

dnl Target CPU type.
HAVE_I386=no
HAVE_POWERPC=no
HAVE_X86_64=no
case "$target_cpu" in
  i386* | i486* | i586* | i686* | i786* ) HAVE_I386=yes;;
  powerpc* ) HAVE_POWERPC=yes;;
  x86_64* ) HAVE_X86_64=yes;;
esac

dnl Checks for programs.
AC_PROG_CC
AC_PROG_CC_C_O
AC_PROG_CPP
AC_PROG_CXX
AC_PROG_MAKE_SET
AC_PROG_EGREP
AC_PROG_LN_S
AC_CHECK_TOOL(WINDRES, windres)

dnl We use GTK+ if possible.
if [[ "x$WANT_GTK" = "xyes" ]]; then
  AM_PATH_GTK_2_0(1.3.15, [], [
    AC_MSG_WARN([Could not find GTK+ 2.0, disabling user interface.])
    WANT_GTK=no
  ])
fi
AC_SUBST(WANT_GTK)

dnl We use 64-bit file size support if possible.
AC_SYS_LARGEFILE

dnl Checks for header files.
AC_HEADER_STDC

dnl Checks for typedefs, structures, and compiler characteristics.
AC_C_BIGENDIAN
AC_C_CONST
AC_C_INLINE
AC_CHECK_SIZEOF(short, 2)
AC_CHECK_SIZEOF(int, 4)
AC_CHECK_SIZEOF(long, 4)
AC_CHECK_SIZEOF(long long, 8)
AC_CHECK_SIZEOF(float, 4)
AC_CHECK_SIZEOF(double, 8)
AC_CHECK_SIZEOF(long double, 12)
AC_CHECK_SIZEOF(void *, 4)
AC_TYPE_OFF_T
AC_CHECK_TYPES(loff_t)
AC_CHECK_TYPES(caddr_t)
AC_TYPE_SIZE_T

dnl Checks for library functions.
AC_CHECK_FUNCS(strdup strerror)

dnl Define a macro that translates a yesno-variable into a C macro definition
dnl to be put into the config.h file
dnl $1 -- the macro to define
dnl $2 -- the value to translate
dnl $3 -- template name
AC_DEFUN([AC_TRANSLATE_DEFINE], [
    if [[ "x$2" = "xyes" -o "x$2" = "xguessing yes" ]]; then
        AC_DEFINE($1, 1, $3)
    fi
])

dnl Check that VirtualAlloc(), VirtualProtect() work
AC_CACHE_CHECK([whether VirtualProtect works],
  ac_cv_VirtualProtect_works, [
  AC_LANG_SAVE
  AC_LANG_CPLUSPLUS
  ac_cv_VirtualProtect_works=yes
  dnl First the tests that should segfault
  for test_def in NONE_READ NONE_WRITE READ_WRITE; do
    AC_TRY_RUN([
      #define HAVE_WIN32_VM 1
      #define CONFIGURE_TEST_VM_MAP
      #define TEST_VM_PROT_$test_def
      #include "../Unix/vm_alloc.cpp"
    ], ac_cv_VirtualProtect_works=no, rm -f core,
    dnl When cross-compiling, assume it works
    ac_cv_VirtualProtect_works="yes"
    )
  done
  AC_TRY_RUN([
    #define HAVE_WIN32_VM 1
    #define CONFIGURE_TEST_VM_MAP
    #define TEST_VM_PROT_RDWR_WRITE
    #include "../Unix/vm_alloc.cpp"
  ], , ac_cv_VirtualProtect_works=no,
  dnl When cross-compiling, assume it works
  ac_cv_VirtualProtect_works="yes"
  )
  AC_LANG_RESTORE
  ]
)
if [[ "x$ac_cv_VirtualProtect_works" = "xyes" ]]; then
  AC_DEFINE(HAVE_WIN32_VM, 1, [Define if your system has a working Win32-based memory allocator.])
else
  AC_MSG_ERROR([Sorry, Windows VM functions don't work as expected on your system.])
fi

dnl Check if Windows exceptions are supported.
AC_CACHE_CHECK([whether your system supports Windows exceptions],
  ac_cv_have_win32_exceptions, [
  AC_LANG_SAVE
  AC_LANG_CPLUSPLUS
  AC_TRY_RUN([
    #define HAVE_WIN32_EXCEPTIONS 1
    #define CONFIGURE_TEST_SIGSEGV_RECOVERY
    #include "../Unix/vm_alloc.cpp"
    #include "../Unix/sigsegv.cpp"
  ],
  ac_cv_have_win32_exceptions=yes,
  ac_cv_have_win32_exceptions=no,
  dnl When cross-compiling, assume it works
  ac_cv_have_win32_exceptions="yes"
  )
  AC_LANG_RESTORE
  ]
)
if [[ "x$ac_cv_have_win32_exceptions" = "xyes" ]]; then
  AC_DEFINE(HAVE_WIN32_EXCEPTIONS, 1, [Define if your system supports Windows exceptions.])
else
  AC_MSG_ERROR([Sorry, Windows exceptions don't work as expected on your system.])
fi

dnl Check if we can ignore the fault (instruction skipping in SIGSEGV handler)
AC_CACHE_CHECK([whether we can skip instruction in SIGSEGV handler],
  ac_cv_have_skip_instruction, [
  AC_LANG_SAVE
  AC_LANG_CPLUSPLUS
  AC_TRY_RUN([
    #define HAVE_SIGSEGV_SKIP_INSTRUCTION 1
    #define CONFIGURE_TEST_SIGSEGV_RECOVERY
    #include "../Unix/vm_alloc.cpp"
    #include "../Unix/sigsegv.cpp"
  ], ac_cv_have_skip_instruction=yes, ac_cv_have_skip_instruction=no,
  dnl When cross-compiling, do not assume anything.
  ac_cv_have_skip_instruction=no
  )
  AC_LANG_RESTORE
  ]
)
AC_TRANSLATE_DEFINE(HAVE_SIGSEGV_SKIP_INSTRUCTION, "$ac_cv_have_skip_instruction",
  [Define if we can ignore the fault (instruction skipping in SIGSEGV handler).])

dnl We really want VOSF (Video on SEGV Signals) screen updates acceleration
AC_DEFINE(ENABLE_VOSF, 1, [Define if using video enabled on SEGV signals.])

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 $am in
  direct)
    dnl Direct addressing mode (constant offset)
    ADDRESSING_MODE="direct"
    DEFINES="$DEFINES -DDIRECT_ADDRESSING"
    break
    ;;
  banks)
    dnl Default addressing mode
    ADDRESSING_MODE="memory banks"
    break
    ;;
  *)
    AC_MSG_ERROR([Internal configure.ac 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 Banked Memory Addressing mode is not supported by the JIT compiler
if [[ "x$WANT_JIT" = "xyes" -a "x$ADDRESSING_MODE" = "xmemory banks" ]]; then
  AC_MSG_ERROR([Sorry, the JIT Compiler requires Direct Addressing, at least])
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(xyes,
[#if __GNUC__ - 1 > 1 || __GNUC_MINOR__ - 1 > 5
  xyes
#endif
], [AC_MSG_RESULT(yes); HAVE_GCC27=yes], AC_MSG_RESULT(no))

dnl Check for GCC 3.0 or higher.
HAVE_GCC30=no
AC_MSG_CHECKING(for GCC 3.0 or higher)
AC_EGREP_CPP(xyes,
[#if __GNUC__ >= 3
  xyes
#endif
], [AC_MSG_RESULT(yes); HAVE_GCC30=yes], AC_MSG_RESULT(no))

dnl Add -fno-strict-aliasing for slirp sources
if [[ "x$HAVE_GCC30" = "xyes" ]]; then
  SAVED_CFLAGS="$CFLAGS"
  CFLAGS="$CFLAGS -fno-strict-aliasing"
  AC_CACHE_CHECK([whether the compiler supports -fno-strict-aliasing],
    ac_cv_gcc_no_strict_aliasing, [
    AC_TRY_COMPILE([],[],
      [ac_cv_gcc_no_strict_aliasing=yes; AC_SUBST(SLIRP_CFLAGS, "-fno-strict-aliasing")],
      [ac_cv_gcc_no_strict_aliasing=no])
  ])
  CFLAGS="$SAVED_CFLAGS"
fi

dnl Select appropriate CPU source and REGPARAM define.
ASM_OPTIMIZATIONS=none
CPUSRCS="cpuemu1.cpp cpuemu2.cpp cpuemu3.cpp cpuemu4.cpp cpuemu5.cpp cpuemu6.cpp cpuemu7.cpp cpuemu8.cpp"

dnl JITSRCS will be emptied later if the JIT is not available
dnl Other platforms should define their own set of noflags file variants
CAN_JIT=no
JITSRCS="compemu1.cpp compemu2.cpp compemu3.cpp compemu4.cpp compemu5.cpp compemu6.cpp compemu7.cpp compemu8.cpp"

if [[ "x$HAVE_GCC27" = "xyes" -a "x$HAVE_I386" = "xyes" ]]; then
  dnl i386 CPU
  DEFINES="$DEFINES -DUNALIGNED_PROFITABLE -DREGPARAM=\"__attribute__((regparm(3)))\""
  if [[ "x$HAVE_GAS" = "xyes" ]]; then
    ASM_OPTIMIZATIONS=i386
    DEFINES="$DEFINES -DX86_ASSEMBLY -DOPTIMIZED_FLAGS -DSAHF_SETO_PROFITABLE"
    JITSRCS="cpuemu1_nf.cpp cpuemu2_nf.cpp cpuemu3_nf.cpp cpuemu4_nf.cpp cpuemu5_nf.cpp cpuemu6_nf.cpp cpuemu7_nf.cpp cpuemu8_nf.cpp $JITSRCS"
    CAN_JIT=yes
  fi
elif [[ "x$HAVE_GCC30" = "xyes" -a "x$HAVE_X86_64" = "xyes" ]]; then
  dnl x86-64 CPU
  DEFINES="$DEFINES -DUNALIGNED_PROFITABLE"
  if [[ "x$HAVE_GAS" = "xyes" ]]; then
    ASM_OPTIMIZATIONS="x86-64"
    DEFINES="$DEFINES -DX86_64_ASSEMBLY -DOPTIMIZED_FLAGS"
    JITSRCS="cpuemu1_nf.cpp cpuemu2_nf.cpp cpuemu3_nf.cpp cpuemu4_nf.cpp cpuemu5_nf.cpp cpuemu6_nf.cpp cpuemu7_nf.cpp cpuemu8_nf.cpp $JITSRCS"
    CAN_JIT=yes
  fi
fi

dnl Enable JIT compiler, if possible.
if [[ "x$WANT_JIT" = "xyes" -a "x$CAN_JIT" ]]; then
  JITSRCS="$JITSRCS ../uae_cpu/compiler/compemu_support.cpp ../uae_cpu/compiler/compemu_fpp.cpp compstbl.o cpustbl_nf.o"
  DEFINES="$DEFINES -DUSE_JIT -DUSE_JIT_FPU"
  
  if [[ "x$WANT_JIT_DEBUG" = "xyes" ]]; then
    if [[ "x$WANT_MON" = "xyes" ]]; then
      DEFINES="$DEFINES -DJIT_DEBUG=1"
    else
      AC_MSG_WARN([cxmon not found, ignoring --enable-jit-debug])
      WANT_JIT_DEBUG=no
    fi
  fi

  dnl IEEE core is the only FPU emulator to use with the JIT compiler
  case $FPE_CORE_TEST_ORDER in
  ieee*) ;;
  *) AC_MSG_WARN([Forcing use of the IEEE FPU core, as the JIT compiler supports only this one.]) ;;
  esac
  FPE_CORE_TEST_ORDER="ieee"
else
  WANT_JIT=no
  WANT_JIT_DEBUG=no
  JITSRCS=""
fi

dnl Utility macro used by next two tests.
dnl AC_EXAMINE_OBJECT(C source code,
dnl     commands examining object file,
dnl     [commands to run if compile failed]):
dnl
dnl Compile the source code to an object file; then convert it into a
dnl printable representation.  All unprintable characters and
dnl asterisks (*) are replaced by dots (.).  All white space is
dnl deleted.  Newlines (ASCII 0x10) in the input are preserved in the
dnl output, but runs of newlines are compressed to a single newline.
dnl Finally, line breaks are forcibly inserted so that no line is
dnl longer than 80 columns and the file ends with a newline.  The
dnl result of all this processing is in the file conftest.dmp, which
dnl may be examined by the commands in the second argument.
dnl
AC_DEFUN([gcc_AC_EXAMINE_OBJECT],
[AC_LANG_SAVE
AC_LANG_C
dnl Next bit cribbed from AC_TRY_COMPILE.
cat > conftest.$ac_ext <<EOF
[#line __oline__ "configure"
#include "confdefs.h"
$1
]EOF
if AC_TRY_EVAL(ac_compile); then
  od -c conftest.o |
    sed ['s/^[0-7]*[    ]*/ /
          s/\*/./g
          s/ \\n/*/g
          s/ [0-9][0-9][0-9]/./g
          s/  \\[^ ]/./g'] |
    tr -d '
 ' | tr -s '*' '
' | fold | sed '$a\
' > conftest.dmp
  $2
ifelse($3, , , else
  $3
)dnl
fi
rm -rf conftest*
AC_LANG_RESTORE])

dnl Floating point format probe.
dnl The basic concept is the same as the above: grep the object
dnl file for an interesting string.  We have to watch out for
dnl rounding changing the values in the object, however; this is
dnl handled by ignoring the least significant byte of the float.
dnl
dnl Does not know about VAX G-float or C4x idiosyncratic format.
dnl It does know about PDP-10 idiosyncratic format, but this is
dnl not presently supported by GCC.  S/390 "binary floating point"
dnl is in fact IEEE (but maybe we should have that in EBCDIC as well
dnl as ASCII?)
dnl
AC_DEFUN([gcc_AC_C_FLOAT_FORMAT],
[AC_CACHE_CHECK(floating point format, ac_cv_c_float_format,
[gcc_AC_EXAMINE_OBJECT(
[/* This will not work unless sizeof(double) == 8.  */
extern char sizeof_double_must_be_8 [sizeof(double) == 8 ? 1 : -1];

/* This structure must have no internal padding.  */
struct possibility {
  char prefix[8];
  double candidate;
  char postfix[8];
};

#define C(cand) { "\nformat:", cand, ":tamrof\n" }
struct possibility table [] =
{
  C( 3.25724264705901305206e+01), /* @@IEEEFP - IEEE 754 */
  C( 3.53802595280598432000e+18), /* D__float - VAX */
  C( 5.32201830133125317057e-19), /* D.PDP-10 - PDP-10 - the dot is 0x13a */
  C( 1.77977764695171661377e+10), /* IBMHEXFP - s/390 format, ascii */
  C(-5.22995989424860458374e+10)  /* IBMHEXFP - s/390 format, EBCDIC */
};],
 [if   grep 'format:.@IEEEF.:tamrof' conftest.dmp >/dev/null 2>&1; then
    ac_cv_c_float_format='IEEE (big-endian)'
  elif grep 'format:.I@@PFE.:tamrof' conftest.dmp >/dev/null 2>&1; then
    ac_cv_c_float_format='IEEE (big-endian)'
  elif grep 'format:.FEEEI@.:tamrof' conftest.dmp >/dev/null 2>&1; then
    ac_cv_c_float_format='IEEE (little-endian)'
  elif grep 'format:.EFP@@I.:tamrof' conftest.dmp >/dev/null 2>&1; then
    ac_cv_c_float_format='IEEE (little-endian)'
  elif grep 'format:.__floa.:tamrof' conftest.dmp >/dev/null 2>&1; then
    ac_cv_c_float_format='VAX D-float'
  elif grep 'format:..PDP-1.:tamrof' conftest.dmp >/dev/null 2>&1; then
    ac_cv_c_float_format='PDP-10'
  elif grep 'format:.BMHEXF.:tamrof' conftest.dmp >/dev/null 2>&1; then
    ac_cv_c_float_format='IBM 370 hex'
  else
    AC_MSG_ERROR(Unknown floating point format)
  fi],
  [AC_MSG_ERROR(compile failed)])
])
# IEEE is the default format.  If the float endianness isn't the same
# as the integer endianness, we have to set FLOAT_WORDS_BIG_ENDIAN
# (which is a tristate: yes, no, default).  This is only an issue with
# IEEE; the other formats are only supported by a few machines each,
# all with the same endianness.
format=IEEE_FLOAT_FORMAT
fbigend=
case $ac_cv_c_float_format in
    'IEEE (big-endian)' )
        if test $ac_cv_c_bigendian = no; then
            fbigend=1
        fi
        ;;
    'IEEE (little-endian)' )
        if test $ac_cv_c_bigendian = yes; then
            fbigend=0
        fi
        ;;
    'VAX D-float' )
        format=VAX_FLOAT_FORMAT
        ;;
    'PDP-10' )
        format=PDP10_FLOAT_FORMAT
        ;;
    'IBM 370 hex' )
        format=IBM_FLOAT_FORMAT
        ;;
esac
AC_DEFINE_UNQUOTED(HOST_FLOAT_FORMAT, $format,
  [Define to the floating point format of the host machine.])
if test -n "$fbigend"; then
        AC_DEFINE_UNQUOTED(HOST_FLOAT_WORDS_BIG_ENDIAN, $fbigend,
  [Define to 1 if the host machine stores floating point numbers in
   memory with the word containing the sign bit at the lowest address,
   or to 0 if it does it the other way around.

   This macro should not be defined if the ordering is the same as for
   multi-word integers.])
fi
])

dnl Select appropriate FPU source.
gcc_AC_C_FLOAT_FORMAT
AC_CHECK_HEADERS(ieee754.h ieeefp.h floatingpoint.h nan.h)

for fpe in $FPE_CORE_TEST_ORDER; do
  case $fpe in
  ieee)
    case $ac_cv_c_float_format in
    IEEE*)
      FPE_CORE="IEEE fpu core"
      DEFINES="$DEFINES -DFPU_IEEE"
      FPUSRCS="../uae_cpu/fpu/fpu_ieee.cpp"
      dnl Math functions not mandated by C99 standard
      AC_CHECK_FUNCS(isnanl isinfl)
      dnl Math functions required by C99 standard, but probably not
      dnl implemented everywhere. In that case, we fall back to the
      dnl regular variant for doubles.
      AC_CHECK_FUNCS(logl log10l expl powl fabsl sqrtl)
      AC_CHECK_FUNCS(sinl cosl tanl sinhl coshl tanhl)
      AC_CHECK_FUNCS(asinl acosl atanl asinhl acoshl atanhl)
      AC_CHECK_FUNCS(floorl ceill)
      break
      ;;
    esac
    ;;
  x86)
    if [[ ":$HAVE_GCC27:$HAVE_I386:$HAVE_GAS:" = ":yes:yes:yes:" ]]; then
      FPE_CORE="i387 fpu core"
      DEFINES="$DEFINES -DFPU_X86"
      FPUSRCS="../uae_cpu/fpu/fpu_x86.cpp"
      break
    fi
    ;;
  uae)
    FPE_CORE="uae fpu core"
    DEFINES="$DEFINES -DFPU_UAE"
    FPUSRCS="../uae_cpu/fpu/fpu_uae.cpp"
    break
    ;;
  *)
    AC_MSG_ERROR([Internal configure.in script error for $fpe fpu core])
    ;;
  esac
done
if [[ "x$FPE_CORE" = "x" ]]; then
  AC_MSG_ERROR([Sorry, no suitable FPU core found in $FPE_CORE_TEST_ORDER])
fi

dnl Check for certain math functions
AC_CHECK_FUNCS(atanh)
AC_CHECK_FUNCS(isnan isinf finite isnormal signbit)

dnl UAE CPU sources for all non-m68k-native architectures.
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 $JITSRCS"

dnl We really want SDL for now
AC_CHECK_TOOL(sdl_config, sdl-config, [AC_MSG_ERROR([Sorry, you currently need SDL for this port])])
SDL_CFLAGS=`$sdl_config --cflags`
AC_SUBST(SDL_CFLAGS)
if [[ "x$WANT_SDL_STATIC" = "xyes" ]]; then
  SDL_LIBS=`$sdl_config --static-libs`
  sdl_prefix=`$sdl_config --exec-prefix`
  if [[ -n "$sdl_prefix" ]]; then
    SDL_LIBS=`echo "$SDL_LIBS" | sed -e "s,-l\(SDLmain\|SDL\),$sdl_prefix/lib/lib\1.a,g"`
  fi
  SDL_LIBS="$SDL_LIBS -lwinmm"
else
  SDL_LIBS=`$sdl_config --libs`
fi
AC_SUBST(SDL_LIBS)
AC_DEFINE(USE_SDL, 1, [Define to enble SDL support])
AC_DEFINE(USE_SDL_VIDEO, 1, [Define to enable SDL video graphics support])
AC_DEFINE(USE_SDL_AUDIO, 1, [Define to enable SDL audio support])

dnl Remove the "-g" option if set for GCC.
if [[ "x$HAVE_GCC27" = "xyes" ]]; then
  CFLAGS=`echo $CFLAGS | sed -e 's/-g\b//g'`
  CXXFLAGS=`echo $CXXFLAGS | sed -e 's/-g\b//g'`
fi

dnl Generate Makefile.
AC_SUBST(DEFINES)
AC_SUBST(CPUINCLUDES)
AC_SUBST(CPUSRCS)
AC_CONFIG_FILES([Makefile])
AC_OUTPUT

dnl Print summary.
echo
echo Basilisk II configuration summary:
echo
echo Use JIT compiler ....................... : $WANT_JIT
echo JIT debug mode ......................... : $WANT_JIT_DEBUG
echo Floating-Point emulation core .......... : $FPE_CORE
echo Assembly optimizations ................. : $ASM_OPTIMIZATIONS
echo Addressing mode ........................ : $ADDRESSING_MODE
echo GTK user interface ..................... : $WANT_GTK
echo
echo "Configuration done. Now type \"make\" (or \"gmake\")."
Revision:	1.7
Committed:	2007-01-13T18:21:30Z (17 years, 9 months ago) by gbeauche
Branch:	MAIN
CVS Tags:	HEAD
Changes since 1.6:	+0 -1 lines
Log Message:	Remove the 33-bit addressing hack as it's overly complex for not much gain. Rather, use an address override prefix (0x67) though Intel Core optimization reference guide says to avoid LCP prefixes. In practise, impact on performance is measurably marginal on e.g. Speedometer tests.
#	User	Rev	Content
1	gbeauche	1.3	dnl Process this file with autoconf to produce a configure script.
2			dnl Written in 2002 by Christian Bauer et al.
3
4			AC_INIT([Basilisk II], 1.0, [Christian.Bauer@uni-mainz.de], BasiliskII)
5			AC_CONFIG_SRCDIR(main_windows.cpp)
6			AC_CONFIG_AUX_DIR(../Unix)
7			AC_PREREQ(2.52)
8			AC_CONFIG_HEADER(config.h)
9
10			dnl Aliases for PACKAGE and VERSION macros.
11			AC_DEFINE_UNQUOTED(PACKAGE, "$PACKAGE_NAME", [Define this program name.])
12			AC_DEFINE_UNQUOTED(VERSION, "$PACKAGE_VERSION", [Define this program version.])
13
14	gbeauche	1.5	dnl SDL options.
15			AC_ARG_ENABLE(sdl-static, [ --enable-sdl-static use SDL static libraries for linking [default=no]], [WANT_SDL_STATIC=$enableval], [WANT_SDL_STATIC=no])
16
17	gbeauche	1.3	dnl JIT compiler options.
18			AC_ARG_ENABLE(jit-compiler, [ --enable-jit-compiler enable JIT compiler [default=yes]], [WANT_JIT=$enableval], [WANT_JIT=yes])
19			AC_ARG_ENABLE(jit-debug, [ --enable-jit-debug activate native code disassemblers [default=no]], [WANT_JIT_DEBUG=$enableval], [WANT_JIT_DEBUG=no])
20
21			dnl FPU emulation core.
22			AC_ARG_ENABLE(fpe,
23			[ --enable-fpe=FPE specify which fpu emulator to use [default=auto]],
24			[ case "$enableval" in
25			dnl default is always ieee, if architecture has this fp format
26			auto) FPE_CORE_TEST_ORDER="ieee uae";;
27			ieee) FPE_CORE_TEST_ORDER="ieee";;
28			uae) FPE_CORE_TEST_ORDER="uae";;
29			x86) FPE_CORE_TEST_ORDER="x86";;
30			*) AC_MSG_ERROR([--enable-fpe takes only one of the following values: auto, x86, ieee, uae]);;
31			esac
32			],
33			[ FPE_CORE_TEST_ORDER="ieee uae"
34			])
35
36			dnl External packages.
37			AC_ARG_WITH(gtk, [ --with-gtk use GTK user interface [default=yes]], [WANT_GTK=$withval], [WANT_GTK=yes])
38
39			dnl Addressing modes.
40			AC_ARG_ENABLE(addressing,
41			[ --enable-addressing=AM specify the addressing mode to use [default=fastest]],
42			[ case "$enableval" in
43			direct) ADDRESSING_TEST_ORDER="direct";;
44			banks) ADDRESSING_TEST_ORDER="banks";;
45			fastest)ADDRESSING_TEST_ORDER="direct banks";;
46			*) AC_MSG_ERROR([--enable-addressing takes only one of the following values: fastest, direct, banks]);;
47			esac
48			],
49			[ ADDRESSING_TEST_ORDER="direct banks"
50			])
51
52			dnl Canonical system information.
53			AC_CANONICAL_HOST
54			AC_CANONICAL_TARGET
55
56			dnl Target CPU type.
57			HAVE_I386=no
58			HAVE_POWERPC=no
59			HAVE_X86_64=no
60			case "$target_cpu" in
61			i386* \| i486* \| i586* \| i686* \| i786* ) HAVE_I386=yes;;
62			powerpc* ) HAVE_POWERPC=yes;;
63			x86_64* ) HAVE_X86_64=yes;;
64			esac
65
66			dnl Checks for programs.
67			AC_PROG_CC
68			AC_PROG_CC_C_O
69			AC_PROG_CPP
70			AC_PROG_CXX
71			AC_PROG_MAKE_SET
72			AC_PROG_EGREP
73			AC_PROG_LN_S
74			AC_CHECK_TOOL(WINDRES, windres)
75
76			dnl We use GTK+ if possible.
77			if [[ "x$WANT_GTK" = "xyes" ]]; then
78			AM_PATH_GTK_2_0(1.3.15, [], [
79			AC_MSG_WARN([Could not find GTK+ 2.0, disabling user interface.])
80			WANT_GTK=no
81			])
82			fi
83			AC_SUBST(WANT_GTK)
84
85			dnl We use 64-bit file size support if possible.
86			AC_SYS_LARGEFILE
87
88			dnl Checks for header files.
89			AC_HEADER_STDC
90
91			dnl Checks for typedefs, structures, and compiler characteristics.
92			AC_C_BIGENDIAN
93			AC_C_CONST
94			AC_C_INLINE
95			AC_CHECK_SIZEOF(short, 2)
96			AC_CHECK_SIZEOF(int, 4)
97			AC_CHECK_SIZEOF(long, 4)
98			AC_CHECK_SIZEOF(long long, 8)
99			AC_CHECK_SIZEOF(float, 4)
100			AC_CHECK_SIZEOF(double, 8)
101			AC_CHECK_SIZEOF(long double, 12)
102			AC_CHECK_SIZEOF(void *, 4)
103			AC_TYPE_OFF_T
104			AC_CHECK_TYPES(loff_t)
105			AC_CHECK_TYPES(caddr_t)
106			AC_TYPE_SIZE_T
107
108	gbeauche	1.6	dnl Checks for library functions.
109			AC_CHECK_FUNCS(strdup strerror)
110
111	gbeauche	1.3	dnl Define a macro that translates a yesno-variable into a C macro definition
112			dnl to be put into the config.h file
113			dnl $1 -- the macro to define
114			dnl $2 -- the value to translate
115			dnl $3 -- template name
116			AC_DEFUN([AC_TRANSLATE_DEFINE], [
117			if [[ "x$2" = "xyes" -o "x$2" = "xguessing yes" ]]; then
118			AC_DEFINE($1, 1, $3)
119			fi
120			])
121
122			dnl Check that VirtualAlloc(), VirtualProtect() work
123			AC_CACHE_CHECK([whether VirtualProtect works],
124			ac_cv_VirtualProtect_works, [
125			AC_LANG_SAVE
126			AC_LANG_CPLUSPLUS
127			ac_cv_VirtualProtect_works=yes
128			dnl First the tests that should segfault
129			for test_def in NONE_READ NONE_WRITE READ_WRITE; do
130			AC_TRY_RUN([
131			#define HAVE_WIN32_VM 1
132			#define CONFIGURE_TEST_VM_MAP
133			#define TEST_VM_PROT_$test_def
134			#include "../Unix/vm_alloc.cpp"
135			], ac_cv_VirtualProtect_works=no, rm -f core,
136			dnl When cross-compiling, assume it works
137			ac_cv_VirtualProtect_works="yes"
138			)
139			done
140			AC_TRY_RUN([
141			#define HAVE_WIN32_VM 1
142			#define CONFIGURE_TEST_VM_MAP
143			#define TEST_VM_PROT_RDWR_WRITE
144			#include "../Unix/vm_alloc.cpp"
145			], , ac_cv_VirtualProtect_works=no,
146			dnl When cross-compiling, assume it works
147			ac_cv_VirtualProtect_works="yes"
148			)
149			AC_LANG_RESTORE
150			]
151			)
152			if [[ "x$ac_cv_VirtualProtect_works" = "xyes" ]]; then
153			AC_DEFINE(HAVE_WIN32_VM, 1, [Define if your system has a working Win32-based memory allocator.])
154			else
155			AC_MSG_ERROR([Sorry, Windows VM functions don't work as expected on your system.])
156			fi
157
158			dnl Check if Windows exceptions are supported.
159			AC_CACHE_CHECK([whether your system supports Windows exceptions],
160			ac_cv_have_win32_exceptions, [
161			AC_LANG_SAVE
162			AC_LANG_CPLUSPLUS
163			AC_TRY_RUN([
164			#define HAVE_WIN32_EXCEPTIONS 1
165			#define CONFIGURE_TEST_SIGSEGV_RECOVERY
166			#include "../Unix/vm_alloc.cpp"
167			#include "../Unix/sigsegv.cpp"
168			],
169			ac_cv_have_win32_exceptions=yes,
170			ac_cv_have_win32_exceptions=no,
171			dnl When cross-compiling, assume it works
172			ac_cv_have_win32_exceptions="yes"
173			)
174			AC_LANG_RESTORE
175			]
176			)
177			if [[ "x$ac_cv_have_win32_exceptions" = "xyes" ]]; then
178			AC_DEFINE(HAVE_WIN32_EXCEPTIONS, 1, [Define if your system supports Windows exceptions.])
179			else
180			AC_MSG_ERROR([Sorry, Windows exceptions don't work as expected on your system.])
181			fi
182
183	gbeauche	1.4	dnl Check if we can ignore the fault (instruction skipping in SIGSEGV handler)
184			AC_CACHE_CHECK([whether we can skip instruction in SIGSEGV handler],
185			ac_cv_have_skip_instruction, [
186			AC_LANG_SAVE
187			AC_LANG_CPLUSPLUS
188			AC_TRY_RUN([
189			#define HAVE_SIGSEGV_SKIP_INSTRUCTION 1
190			#define CONFIGURE_TEST_SIGSEGV_RECOVERY
191			#include "../Unix/vm_alloc.cpp"
192			#include "../Unix/sigsegv.cpp"
193			], ac_cv_have_skip_instruction=yes, ac_cv_have_skip_instruction=no,
194			dnl When cross-compiling, do not assume anything.
195			ac_cv_have_skip_instruction=no
196			)
197			AC_LANG_RESTORE
198			]
199			)
200			AC_TRANSLATE_DEFINE(HAVE_SIGSEGV_SKIP_INSTRUCTION, "$ac_cv_have_skip_instruction",
201			[Define if we can ignore the fault (instruction skipping in SIGSEGV handler).])
202
203	gbeauche	1.3	dnl We really want VOSF (Video on SEGV Signals) screen updates acceleration
204			AC_DEFINE(ENABLE_VOSF, 1, [Define if using video enabled on SEGV signals.])
205
206			dnl Determine the addressing mode to use
207			ADDRESSING_MODE=""
208			AC_MSG_CHECKING([for the addressing mode to use])
209			for am in $ADDRESSING_TEST_ORDER; do
210			case $am in
211			direct)
212			dnl Direct addressing mode (constant offset)
213			ADDRESSING_MODE="direct"
214			DEFINES="$DEFINES -DDIRECT_ADDRESSING"
215			break
216			;;
217			banks)
218			dnl Default addressing mode
219			ADDRESSING_MODE="memory banks"
220			break
221			;;
222			*)
223			AC_MSG_ERROR([Internal configure.ac script error for $am addressing mode])
224			esac
225			done
226			AC_MSG_RESULT($ADDRESSING_MODE)
227			if [[ "x$ADDRESSING_MODE" = "x" ]]; then
228			AC_MSG_WARN([Sorry, no suitable addressing mode in $ADDRESSING_TEST_ORDER])
229			ADDRESSING_MODE="memory banks"
230			fi
231
232			dnl Banked Memory Addressing mode is not supported by the JIT compiler
233			if [[ "x$WANT_JIT" = "xyes" -a "x$ADDRESSING_MODE" = "xmemory banks" ]]; then
234			AC_MSG_ERROR([Sorry, the JIT Compiler requires Direct Addressing, at least])
235			fi
236
237			dnl Check for GAS.
238			HAVE_GAS=no
239			AC_MSG_CHECKING(for GAS .p2align feature)
240			cat >conftest.S << EOF
241			.text
242			.p2align 5
243			EOF
244			if $CC conftest.S -c -o conftest.o >/dev/null 2>&1 ; then HAVE_GAS=yes; fi
245			AC_MSG_RESULT($HAVE_GAS)
246
247			dnl Check for GCC 2.7 or higher.
248			HAVE_GCC27=no
249			AC_MSG_CHECKING(for GCC 2.7 or higher)
250			AC_EGREP_CPP(xyes,
251			[#if __GNUC__ - 1 > 1 \|\| __GNUC_MINOR__ - 1 > 5
252			xyes
253			#endif
254			], [AC_MSG_RESULT(yes); HAVE_GCC27=yes], AC_MSG_RESULT(no))
255
256			dnl Check for GCC 3.0 or higher.
257			HAVE_GCC30=no
258			AC_MSG_CHECKING(for GCC 3.0 or higher)
259			AC_EGREP_CPP(xyes,
260			[#if __GNUC__ >= 3
261			xyes
262			#endif
263			], [AC_MSG_RESULT(yes); HAVE_GCC30=yes], AC_MSG_RESULT(no))
264
265	gbeauche	1.6	dnl Add -fno-strict-aliasing for slirp sources
266			if [[ "x$HAVE_GCC30" = "xyes" ]]; then
267			SAVED_CFLAGS="$CFLAGS"
268			CFLAGS="$CFLAGS -fno-strict-aliasing"
269			AC_CACHE_CHECK([whether the compiler supports -fno-strict-aliasing],
270			ac_cv_gcc_no_strict_aliasing, [
271			AC_TRY_COMPILE([],[],
272			[ac_cv_gcc_no_strict_aliasing=yes; AC_SUBST(SLIRP_CFLAGS, "-fno-strict-aliasing")],
273			[ac_cv_gcc_no_strict_aliasing=no])
274			])
275			CFLAGS="$SAVED_CFLAGS"
276			fi
277
278	gbeauche	1.3	dnl Select appropriate CPU source and REGPARAM define.
279			ASM_OPTIMIZATIONS=none
280			CPUSRCS="cpuemu1.cpp cpuemu2.cpp cpuemu3.cpp cpuemu4.cpp cpuemu5.cpp cpuemu6.cpp cpuemu7.cpp cpuemu8.cpp"
281
282			dnl JITSRCS will be emptied later if the JIT is not available
283			dnl Other platforms should define their own set of noflags file variants
284			CAN_JIT=no
285			JITSRCS="compemu1.cpp compemu2.cpp compemu3.cpp compemu4.cpp compemu5.cpp compemu6.cpp compemu7.cpp compemu8.cpp"
286
287			if [[ "x$HAVE_GCC27" = "xyes" -a "x$HAVE_I386" = "xyes" ]]; then
288			dnl i386 CPU
289			DEFINES="$DEFINES -DUNALIGNED_PROFITABLE -DREGPARAM=\"__attribute__((regparm(3)))\""
290			if [[ "x$HAVE_GAS" = "xyes" ]]; then
291			ASM_OPTIMIZATIONS=i386
292			DEFINES="$DEFINES -DX86_ASSEMBLY -DOPTIMIZED_FLAGS -DSAHF_SETO_PROFITABLE"
293			JITSRCS="cpuemu1_nf.cpp cpuemu2_nf.cpp cpuemu3_nf.cpp cpuemu4_nf.cpp cpuemu5_nf.cpp cpuemu6_nf.cpp cpuemu7_nf.cpp cpuemu8_nf.cpp $JITSRCS"
294			CAN_JIT=yes
295			fi
296			elif [[ "x$HAVE_GCC30" = "xyes" -a "x$HAVE_X86_64" = "xyes" ]]; then
297			dnl x86-64 CPU
298			DEFINES="$DEFINES -DUNALIGNED_PROFITABLE"
299			if [[ "x$HAVE_GAS" = "xyes" ]]; then
300			ASM_OPTIMIZATIONS="x86-64"
301			DEFINES="$DEFINES -DX86_64_ASSEMBLY -DOPTIMIZED_FLAGS"
302			JITSRCS="cpuemu1_nf.cpp cpuemu2_nf.cpp cpuemu3_nf.cpp cpuemu4_nf.cpp cpuemu5_nf.cpp cpuemu6_nf.cpp cpuemu7_nf.cpp cpuemu8_nf.cpp $JITSRCS"
303			CAN_JIT=yes
304			fi
305			fi
306
307			dnl Enable JIT compiler, if possible.
308			if [[ "x$WANT_JIT" = "xyes" -a "x$CAN_JIT" ]]; then
309			JITSRCS="$JITSRCS ../uae_cpu/compiler/compemu_support.cpp ../uae_cpu/compiler/compemu_fpp.cpp compstbl.o cpustbl_nf.o"
310			DEFINES="$DEFINES -DUSE_JIT -DUSE_JIT_FPU"
311
312			if [[ "x$WANT_JIT_DEBUG" = "xyes" ]]; then
313			if [[ "x$WANT_MON" = "xyes" ]]; then
314			DEFINES="$DEFINES -DJIT_DEBUG=1"
315			else
316			AC_MSG_WARN([cxmon not found, ignoring --enable-jit-debug])
317			WANT_JIT_DEBUG=no
318			fi
319			fi
320
321			dnl IEEE core is the only FPU emulator to use with the JIT compiler
322			case $FPE_CORE_TEST_ORDER in
323			ieee*) ;;
324			*) AC_MSG_WARN([Forcing use of the IEEE FPU core, as the JIT compiler supports only this one.]) ;;
325			esac
326			FPE_CORE_TEST_ORDER="ieee"
327			else
328			WANT_JIT=no
329			WANT_JIT_DEBUG=no
330			JITSRCS=""
331			fi
332
333			dnl Utility macro used by next two tests.
334			dnl AC_EXAMINE_OBJECT(C source code,
335			dnl commands examining object file,
336			dnl [commands to run if compile failed]):
337			dnl
338			dnl Compile the source code to an object file; then convert it into a
339			dnl printable representation. All unprintable characters and
340			dnl asterisks (*) are replaced by dots (.). All white space is
341			dnl deleted. Newlines (ASCII 0x10) in the input are preserved in the
342			dnl output, but runs of newlines are compressed to a single newline.
343			dnl Finally, line breaks are forcibly inserted so that no line is
344			dnl longer than 80 columns and the file ends with a newline. The
345			dnl result of all this processing is in the file conftest.dmp, which
346			dnl may be examined by the commands in the second argument.
347			dnl
348			AC_DEFUN([gcc_AC_EXAMINE_OBJECT],
349			[AC_LANG_SAVE
350			AC_LANG_C
351			dnl Next bit cribbed from AC_TRY_COMPILE.
352			cat > conftest.$ac_ext <<EOF
353			[#line __oline__ "configure"
354			#include "confdefs.h"
355			$1
356			]EOF
357			if AC_TRY_EVAL(ac_compile); then
358			od -c conftest.o \|
359			sed ['s/^[0-7][ ]/ /
360			s/\*/./g
361			s/ \\n/*/g
362			s/ [0-9][0-9][0-9]/./g
363			s/ \\[^ ]/./g'] \|
364			tr -d '
365			' \| tr -s '*' '
366			' \| fold \| sed '$a\
367			' > conftest.dmp
368			$2
369			ifelse($3, , , else
370			$3
371			)dnl
372			fi
373			rm -rf conftest*
374			AC_LANG_RESTORE])
375
376			dnl Floating point format probe.
377			dnl The basic concept is the same as the above: grep the object
378			dnl file for an interesting string. We have to watch out for
379			dnl rounding changing the values in the object, however; this is
380			dnl handled by ignoring the least significant byte of the float.
381			dnl
382			dnl Does not know about VAX G-float or C4x idiosyncratic format.
383			dnl It does know about PDP-10 idiosyncratic format, but this is
384			dnl not presently supported by GCC. S/390 "binary floating point"
385			dnl is in fact IEEE (but maybe we should have that in EBCDIC as well
386			dnl as ASCII?)
387			dnl
388			AC_DEFUN([gcc_AC_C_FLOAT_FORMAT],
389			[AC_CACHE_CHECK(floating point format, ac_cv_c_float_format,
390			[gcc_AC_EXAMINE_OBJECT(
391			[/* This will not work unless sizeof(double) == 8. */
392			extern char sizeof_double_must_be_8 [sizeof(double) == 8 ? 1 : -1];
393
394			/* This structure must have no internal padding. */
395			struct possibility {
396			char prefix[8];
397			double candidate;
398			char postfix[8];
399			};
400
401			#define C(cand) { "\nformat:", cand, ":tamrof\n" }
402			struct possibility table [] =
403			{
404			C( 3.25724264705901305206e+01), /* @@IEEEFP - IEEE 754 */
405			C( 3.53802595280598432000e+18), /* D__float - VAX */
406			C( 5.32201830133125317057e-19), /* D.PDP-10 - PDP-10 - the dot is 0x13a */
407			C( 1.77977764695171661377e+10), /* IBMHEXFP - s/390 format, ascii */
408			C(-5.22995989424860458374e+10) /* IBMHEXFP - s/390 format, EBCDIC */
409			};],
410			[if grep 'format:.@IEEEF.:tamrof' conftest.dmp >/dev/null 2>&1; then
411			ac_cv_c_float_format='IEEE (big-endian)'
412			elif grep 'format:.I@@PFE.:tamrof' conftest.dmp >/dev/null 2>&1; then
413			ac_cv_c_float_format='IEEE (big-endian)'
414			elif grep 'format:.FEEEI@.:tamrof' conftest.dmp >/dev/null 2>&1; then
415			ac_cv_c_float_format='IEEE (little-endian)'
416			elif grep 'format:.EFP@@I.:tamrof' conftest.dmp >/dev/null 2>&1; then
417			ac_cv_c_float_format='IEEE (little-endian)'
418			elif grep 'format:.__floa.:tamrof' conftest.dmp >/dev/null 2>&1; then
419			ac_cv_c_float_format='VAX D-float'
420			elif grep 'format:..PDP-1.:tamrof' conftest.dmp >/dev/null 2>&1; then
421			ac_cv_c_float_format='PDP-10'
422			elif grep 'format:.BMHEXF.:tamrof' conftest.dmp >/dev/null 2>&1; then
423			ac_cv_c_float_format='IBM 370 hex'
424			else
425			AC_MSG_ERROR(Unknown floating point format)
426			fi],
427			[AC_MSG_ERROR(compile failed)])
428			])
429			# IEEE is the default format. If the float endianness isn't the same
430			# as the integer endianness, we have to set FLOAT_WORDS_BIG_ENDIAN
431			# (which is a tristate: yes, no, default). This is only an issue with
432			# IEEE; the other formats are only supported by a few machines each,
433			# all with the same endianness.
434			format=IEEE_FLOAT_FORMAT
435			fbigend=
436			case $ac_cv_c_float_format in
437			'IEEE (big-endian)' )
438			if test $ac_cv_c_bigendian = no; then
439			fbigend=1
440			fi
441			;;
442			'IEEE (little-endian)' )
443			if test $ac_cv_c_bigendian = yes; then
444			fbigend=0
445			fi
446			;;
447			'VAX D-float' )
448			format=VAX_FLOAT_FORMAT
449			;;
450			'PDP-10' )
451			format=PDP10_FLOAT_FORMAT
452			;;
453			'IBM 370 hex' )
454			format=IBM_FLOAT_FORMAT
455			;;
456			esac
457			AC_DEFINE_UNQUOTED(HOST_FLOAT_FORMAT, $format,
458			[Define to the floating point format of the host machine.])
459			if test -n "$fbigend"; then
460			AC_DEFINE_UNQUOTED(HOST_FLOAT_WORDS_BIG_ENDIAN, $fbigend,
461			[Define to 1 if the host machine stores floating point numbers in
462			memory with the word containing the sign bit at the lowest address,
463			or to 0 if it does it the other way around.
464
465			This macro should not be defined if the ordering is the same as for
466			multi-word integers.])
467			fi
468			])
469
470			dnl Select appropriate FPU source.
471			gcc_AC_C_FLOAT_FORMAT
472			AC_CHECK_HEADERS(ieee754.h ieeefp.h floatingpoint.h nan.h)
473
474			for fpe in $FPE_CORE_TEST_ORDER; do
475			case $fpe in
476			ieee)
477			case $ac_cv_c_float_format in
478			IEEE*)
479			FPE_CORE="IEEE fpu core"
480			DEFINES="$DEFINES -DFPU_IEEE"
481			FPUSRCS="../uae_cpu/fpu/fpu_ieee.cpp"
482			dnl Math functions not mandated by C99 standard
483			AC_CHECK_FUNCS(isnanl isinfl)
484			dnl Math functions required by C99 standard, but probably not
485			dnl implemented everywhere. In that case, we fall back to the
486			dnl regular variant for doubles.
487			AC_CHECK_FUNCS(logl log10l expl powl fabsl sqrtl)
488			AC_CHECK_FUNCS(sinl cosl tanl sinhl coshl tanhl)
489			AC_CHECK_FUNCS(asinl acosl atanl asinhl acoshl atanhl)
490			AC_CHECK_FUNCS(floorl ceill)
491			break
492			;;
493			esac
494			;;
495			x86)
496			if [[ ":$HAVE_GCC27:$HAVE_I386:$HAVE_GAS:" = ":yes:yes:yes:" ]]; then
497			FPE_CORE="i387 fpu core"
498			DEFINES="$DEFINES -DFPU_X86"
499			FPUSRCS="../uae_cpu/fpu/fpu_x86.cpp"
500			break
501			fi
502			;;
503			uae)
504			FPE_CORE="uae fpu core"
505			DEFINES="$DEFINES -DFPU_UAE"
506			FPUSRCS="../uae_cpu/fpu/fpu_uae.cpp"
507			break
508			;;
509			*)
510			AC_MSG_ERROR([Internal configure.in script error for $fpe fpu core])
511			;;
512			esac
513			done
514			if [[ "x$FPE_CORE" = "x" ]]; then
515			AC_MSG_ERROR([Sorry, no suitable FPU core found in $FPE_CORE_TEST_ORDER])
516			fi
517
518			dnl Check for certain math functions
519			AC_CHECK_FUNCS(atanh)
520			AC_CHECK_FUNCS(isnan isinf finite isnormal signbit)
521
522			dnl UAE CPU sources for all non-m68k-native architectures.
523			CPUINCLUDES="-I../uae_cpu"
524			CPUSRCS="../uae_cpu/basilisk_glue.cpp ../uae_cpu/memory.cpp ../uae_cpu/newcpu.cpp ../uae_cpu/readcpu.cpp $FPUSRCS cpustbl.cpp cpudefs.cpp $CPUSRCS $JITSRCS"
525
526			dnl We really want SDL for now
527			AC_CHECK_TOOL(sdl_config, sdl-config, [AC_MSG_ERROR([Sorry, you currently need SDL for this port])])
528			SDL_CFLAGS=`$sdl_config --cflags`
529			AC_SUBST(SDL_CFLAGS)
530	gbeauche	1.5	if [[ "x$WANT_SDL_STATIC" = "xyes" ]]; then
531			SDL_LIBS=`$sdl_config --static-libs`
532			sdl_prefix=`$sdl_config --exec-prefix`
533			if [[ -n "$sdl_prefix" ]]; then
534			SDL_LIBS=`echo "$SDL_LIBS" \| sed -e "s,-l\(SDLmain\\|SDL\),$sdl_prefix/lib/lib\1.a,g"`
535			fi
536			SDL_LIBS="$SDL_LIBS -lwinmm"
537			else
538			SDL_LIBS=`$sdl_config --libs`
539			fi
540	gbeauche	1.3	AC_SUBST(SDL_LIBS)
541			AC_DEFINE(USE_SDL, 1, [Define to enble SDL support])
542			AC_DEFINE(USE_SDL_VIDEO, 1, [Define to enable SDL video graphics support])
543			AC_DEFINE(USE_SDL_AUDIO, 1, [Define to enable SDL audio support])
544
545			dnl Remove the "-g" option if set for GCC.
546			if [[ "x$HAVE_GCC27" = "xyes" ]]; then
547			CFLAGS=`echo $CFLAGS \| sed -e 's/-g\b//g'`
548			CXXFLAGS=`echo $CXXFLAGS \| sed -e 's/-g\b//g'`
549			fi
550
551			dnl Generate Makefile.
552			AC_SUBST(DEFINES)
553			AC_SUBST(CPUINCLUDES)
554			AC_SUBST(CPUSRCS)
555			AC_CONFIG_FILES([Makefile])
556			AC_OUTPUT
557
558			dnl Print summary.
559			echo
560			echo Basilisk II configuration summary:
561			echo
562			echo Use JIT compiler ....................... : $WANT_JIT
563			echo JIT debug mode ......................... : $WANT_JIT_DEBUG
564			echo Floating-Point emulation core .......... : $FPE_CORE
565			echo Assembly optimizations ................. : $ASM_OPTIMIZATIONS
566			echo Addressing mode ........................ : $ADDRESSING_MODE
567			echo GTK user interface ..................... : $WANT_GTK
568			echo
569			echo "Configuration done. Now type \"make\" (or \"gmake\")."