dnl Process this file with autoconf to produce a configure script.
AC_INIT(Makefile.in)
AC_CONFIG_MACRO_DIRS([../.. ../../config])

AC_PROG_INSTALL
AC_PROG_CC

AC_ARG_ENABLE(sim-bitsize,
[  --enable-sim-bitsize=n		Specify target bitsize (32 or 64).],
[case "${enableval}" in
  32|64) sim_bitsize="-DWITH_TARGET_WORD_BITSIZE=$enableval";;
  *)	 AC_MSG_ERROR("--enable-sim-bitsize was given $enableval.  Expected 32 or 64"); sim_bitsize="";;
esac
if test x"$silent" != x"yes" && test x"$sim_bitsize" != x""; then
  echo "Setting bitsize flags = $sim_bitsize" 6>&1
fi],[sim_bitsize=""])dnl


AC_ARG_ENABLE(sim-decode-mechanism,
[  --enable-sim-decode-mechanism=which		Specify the instruction decode mechanism.],
[case "${enableval}" in
  yes|no)	AC_MSG_ERROR("No value supplied for --enable-sim-decode-mechanism=file");;
  array|switch|padded-switch|goto-switch)	sim_decode_mechanism="-T ${enableval}";;
  *)		AC_MSG_ERROR("File $enableval is not an opcode rules file");
		sim_decode_mechanism="switch";;
esac
if test x"$silent" != x"yes" && test x"$sim_decode_mechanism" != x""; then
  echo "Setting decode mechanism flags = $sim_decode_mechanism" 6>&1
fi],[sim_decode_mechanism=""
if test x"$silent" != x"yes"; then
  echo "Setting decode mechanism flags = $sim_decode_mechanism"
fi])dnl


AC_ARG_ENABLE(sim-default-model,
[  --enable-sim-default-model=which	Specify default PowerPC to model.],
[case "${enableval}" in
  yes|no)	AC_MSG_ERROR("No value supplied for --enable-sim-default-model=model");;
  *)		sim_default_model="-DWITH_DEFAULT_MODEL=${enableval}";;
esac
if test x"$silent" != x"yes" && test x"$sim_default_model" != x""; then
  echo "Setting default-model flags = $sim_default_model" 6>&1
fi],[sim_default_model=""])dnl


AC_ARG_ENABLE(sim-duplicate,
[  --enable-sim-duplicate		Expand (duplicate) semantic functions.],
[case "${enableval}" in
  yes)	sim_dup="-E";;
  no)	sim_dup="";;
  *)	AC_MSG_ERROR("--enable-sim-duplicate does not take a value"); sim_dup="";;
esac
if test x"$silent" != x"yes" && test x"$sim_dup" != x""; then
  echo "Setting duplicate flags = $sim_dup" 6>&1
fi],[sim_dup="-E"
if test x"$silent" != x"yes"; then
  echo "Setting duplicate flags = $sim_dup" 6>&1
fi])dnl


AC_ARG_ENABLE(sim-filter,
[  --enable-sim-filter=rule		Specify filter rules.],
[case "${enableval}" in
  yes)	AC_MSG_ERROR("--enable-sim-filter must be specified with a rule to filter or no"); sim_filter="";;
  no)	sim_filter="";;
  *)	sim_filter="-F $enableval";;
esac
if test x"$silent" != x"yes" && test x"$sim_filter" != x""; then
  echo "Setting filter flags = $sim_filter" 6>&1
fi],[sim_filter="-F 32,f,o"
if test x"$silent" != x"yes"; then
  echo "Setting filter flags = $sim_filter" 6>&1
fi])dnl


AC_ARG_ENABLE(sim-float,
[  --enable-sim-float			Specify whether the target has hard, soft, altivec or e500 floating point.],
[case "${enableval}" in
  yes | hard)	sim_float="-DWITH_FLOATING_POINT=HARD_FLOATING_POINT";;
  no | soft)	sim_float="-DWITH_FLOATING_POINT=SOFT_FLOATING_POINT";;
  altivec)      sim_float="-DWITH_ALTIVEC" ; sim_filter="${sim_filter},av" ;;
  *spe*|*simd*) sim_float="-DWITH_E500" ; sim_filter="${sim_filter},e500" ;;
  *)		AC_MSG_ERROR("Unknown value $enableval passed to --enable-sim-float"); sim_float="";;
esac
if test x"$silent" != x"yes" && test x"$sim_float" != x""; then
  echo "Setting float flags = $sim_float" 6>&1
fi],[
case "${target}" in
  *altivec*) sim_float="-DWITH_ALTIVEC" ; sim_filter="${sim_filter},av" ;;
  *spe*|*simd*)	sim_float="-DWITH_E500" ; sim_filter="${sim_filter},e500" ;;
  *) sim_float=""
esac
])dnl

AC_CACHE_CHECK([if union semun defined],
  ac_cv_HAS_UNION_SEMUN,
  [AC_TRY_COMPILE([
#include <sys/types.h>
#include <sys/ipc.h>
#include <sys/sem.h>],
[union semun arg ;],
[ac_cv_has_union_semun="yes"],
[ac_cv_has_union_semun="no"])
AC_MSG_RESULT($ac_cv_has_union_semun)
])


if test "$ac_cv_has_union_semun" = "yes"; then
  AC_CACHE_CHECK(whether System V semaphores are supported,
  ac_cv_sysv_sem,
  [
  AC_TRY_RUN(
  [
  #include <sys/types.h>
  #include <sys/ipc.h>
  #include <sys/sem.h>
  int main () {
    union semun arg ;

    int id=semget(IPC_PRIVATE,1,IPC_CREAT|0400);
    if (id == -1)
      exit(1);
    arg.val = 0; /* avoid implicit type cast to union */
    if (semctl(id, 0, IPC_RMID, arg) == -1)
      exit(1);
    exit(0);
  }
  ],
  ac_cv_sysv_sem="yes", ac_cv_sysv_sem="no", :)
  ])
else  # semun is not defined
  AC_CACHE_CHECK(whether System V semaphores are supported,
  ac_cv_sysv_sem,
  [
  AC_TRY_RUN(
  [
  #include <sys/types.h>
  #include <sys/ipc.h>
  #include <sys/sem.h>
  union semun {
    int val;
    struct semid_ds *buf;
    ushort *array;
  };
  int main () {
    union semun arg ;

    int id=semget(IPC_PRIVATE,1,IPC_CREAT|0400);
    if (id == -1)
      exit(1);
    arg.val = 0; /* avoid implicit type cast to union */
    if (semctl(id, 0, IPC_RMID, arg) == -1)
      exit(1);
    exit(0);
  }
  ],
  ac_cv_sysv_sem="yes", ac_cv_sysv_sem="no", :)
  ])
fi

AC_CACHE_CHECK(whether System V shared memory is supported,
ac_cv_sysv_shm,
[
AC_TRY_RUN([
#include <sys/types.h>
#include <sys/ipc.h>
#include <sys/shm.h>
int main () {
  int id=shmget(IPC_PRIVATE,1,IPC_CREAT|0400);
  if (id == -1)
    exit(1);
  if (shmctl(id, IPC_RMID, 0) == -1)
    exit(1);
  exit(0);
}
],
ac_cv_sysv_shm="yes", ac_cv_sysv_shm="no", :)
])

if test x"$ac_cv_sysv_shm" = x"yes" -a x"$ac_cv_sysv_sem" = x"yes" ; then
  sim_sysv_ipc_hw=",sem,shm";
else
  sim_sysv_ipc_hw="";
fi

if test x"$ac_cv_has_union_semun" = x"yes" -a x"$ac_cv_sysv_sem" = x"yes" ; then
  AC_DEFINE(HAVE_UNION_SEMUN, 1,
	    [Define if union semun is defined in <sys/sem.h>])
fi


AC_ARG_ENABLE(sim-hardware,
[  --enable-sim-hardware=list		Specify the hardware to be included in the build.],
[hardware="cpu,memory,nvram,iobus,htab,disk,trace,register,vm,init,core,pal,com,eeprom,opic,glue,phb,ide${sim_sysv_ipc_hw}"
case "${enableval}" in
  yes)	;;
  no)	AC_MSG_ERROR("List of hardware must be specified for --enable-sim-hardware"); hardware="";;
  ,*)   hardware="${hardware}${enableval}";;
  *,)   hardware="${enableval}${hardware}";;
  *)	hardware="${enableval}"'';;
esac
sim_hw_src=`echo $hardware | sed -e 's/,/.c hw_/g' -e 's/^/hw_/' -e s'/$/.c/'`
sim_hw_obj=`echo $sim_hw_src | sed -e 's/\.c/.o/g'`
if test x"$silent" != x"yes" && test x"$hardware" != x""; then
  echo "Setting hardware to $sim_hw_src, $sim_hw_obj"
fi],[hardware="cpu,memory,nvram,iobus,htab,disk,trace,register,vm,init,core,pal,com,eeprom,opic,glue,phb,ide${sim_sysv_ipc_hw}"
sim_hw_src=`echo $hardware | sed -e 's/,/.c hw_/g' -e 's/^/hw_/' -e s'/$/.c/'`
sim_hw_obj=`echo $sim_hw_src | sed -e 's/\.c/.o/g'`
if test x"$silent" != x"yes"; then
  echo "Setting hardware to $sim_hw_src, $sim_hw_obj"
fi])dnl

AC_ARG_ENABLE(sim-hostbitsize,
[  --enable-sim-hostbitsize=32|64	Specify host bitsize (32 or 64).],
[case "${enableval}" in
  32|64) sim_hostbitsize="-DWITH_HOST_WORD_BITSIZE=$enableval";;
  *)	 AC_MSG_ERROR("--enable-sim-hostbitsize was given $enableval.  Expected 32 or 64"); sim_hostbitsize="";;
esac
if test x"$silent" != x"yes" && test x"$sim_hostbitsize" != x""; then
  echo "Setting hostbitsize flags = $sim_hostbitsize" 6>&1
fi],[sim_hostbitsize=""])dnl


AC_ARG_ENABLE(sim-icache,
[  --enable-sim-icache=size		Specify instruction-decode cache size and type.],
[icache="-R"
 case "${enableval}" in
  yes)		icache="1024"; sim_icache="-I $icache";;
  no)		sim_icache="-R";;
  *) icache=1024
     sim_icache="-"
     for x in `echo "${enableval}" | sed -e "s/,/ /g"`; do
       case "$x" in
         define)	sim_icache="${sim_icache}R";;
         semantic)	sim_icache="${sim_icache}C";;
	 insn)		sim_icache="${sim_icache}S";;
	 0*|1*|2*|3*|4*|5*|6*|7*|8*|9*)	icache=$x;;
         *)		AC_MSG_ERROR("Unknown value $x for --enable-sim-icache"); sim_icache="";;
       esac
     done
     sim_icache="${sim_icache}I $icache";;
esac
if test x"$silent" != x"yes" && test x"$icache" != x""; then
  echo "Setting instruction cache size to $icache ($sim_icache)"
fi],[sim_icache="-CSRI 1024"
if test x"$silent" != x"yes"; then
  echo "Setting instruction cache size to 1024 ($sim_icache)"
fi])dnl


AC_ARG_ENABLE(sim-jump,
[  --enable-sim-jump		Jump between semantic code (instead of call/return).],
[case "${enableval}" in
  yes)	sim_jump="-J";;
  no)	sim_jump="";;
  *)	AC_MSG_ERROR("--enable-sim-jump does not take a value"); sim_jump="";;
esac
if test x"$silent" != x"yes" && test x"$sim_jump" != x""; then
  echo "Setting jump flag = $sim_jump" 6>&1
fi],[sim_jump=""
if test x"$silent" != x"yes"; then
  echo "Setting jump flag = $sim_jump" 6>&1
fi])dnl


AC_ARG_ENABLE(sim-line-nr,
[  --enable-sim-line-nr=opts		Generate extra CPP code that references source rather than generated code],
[case "${enableval}" in
  yes)	sim_line_nr="";;
  no)	sim_line_nr="-L";;
  *)	AC_MSG_ERROR("--enable-sim-line-nr does not take a value"); sim_line_nr="";;
esac
if test x"$silent" != x"yes" && test x"$sim_line_nr" != x""; then
  echo "Setting warning flags = $sim_line_nr" 6>&1
fi],[sim_line_nr=""])dnl


AC_ARG_ENABLE(sim-model,
[  --enable-sim-model=which		Specify PowerPC to model.],
[case "${enableval}" in
  yes|no)	AC_MSG_ERROR("No value supplied for --enable-sim-model=model");;
  *)		sim_model="-DWITH_MODEL=${enableval}";;
esac
if test x"$silent" != x"yes" && test x"$sim_model" != x""; then
  echo "Setting model flags = $sim_model" 6>&1
fi],[sim_model=""])dnl


AC_ARG_ENABLE(sim-model-issue,
[  --enable-sim-model-issue		Specify whether to simulate model specific actions],
[case "${enableval}" in
  yes)	sim_model_issue="-DWITH_MODEL_ISSUE=MODEL_ISSUE_PROCESS";;
  no)	sim_model_issue="-DWITH_MODEL_ISSUE=MODEL_ISSUE_IGNORE";;
  *)	AC_MSG_ERROR("--enable-sim-model-issue does not take a value"); sim_model_issue="";;
esac
if test x"$silent" != x"yes"; then
  echo "Setting model-issue flags = $sim_model_issue" 6>&1
fi],[sim_model_issue=""])dnl


AC_ARG_ENABLE(sim-monitor,
[  --enable-sim-monitor=mon		Specify whether to enable monitoring events.],
[case "${enableval}" in
  yes)		sim_monitor="-DWITH_MON='MONITOR_INSTRUCTION_ISSUE | MONITOR_LOAD_STORE_UNIT'";;
  no)		sim_monitor="-DWITH_MON=0";;
  instruction)	sim_monitor="-DWITH_MON=MONITOR_INSTRUCTION_ISSUE";;
  memory)	sim_monitor="-DWITH_MON=MONITOR_LOAD_STORE_UNIT";;
  *)		AC_MSG_ERROR("Unknown value $enableval passed to --enable-sim-mon");;
esac
if test x"$silent" != x"yes" && test x"$sim_monitor" != x""; then
  echo "Setting monitor flags = $sim_monitor" 6>&1
fi],[sim_monitor=""])dnl


AC_ARG_ENABLE(sim-opcode,
[  --enable-sim-opcode=which		Override default opcode lookup.],
[case "${enableval}" in
  yes|no)	AC_MSG_ERROR("No value supplied for --enable-sim-opcode=file");;
  *)		if test -f "${srcdir}/${enableval}"; then
		  sim_opcode="${enableval}"
		elif test -f "${srcdir}/dc-${enableval}"; then
		  sim_opcode="dc-${enableval}"
		else
		  AC_MSG_ERROR("File $enableval is not an opcode rules file");
		  sim_opcode="dc-complex"
		fi;;
esac
if test x"$silent" != x"yes" && test x"$sim_opcode" != x""; then
  echo "Setting opcode flags = $sim_opcode" 6>&1
fi],[sim_opcode="dc-complex"
if test x"$silent" != x"yes"; then
  echo "Setting opcode flags = $sim_opcode"
fi])dnl


AC_ARG_ENABLE(sim-packages,
[  --enable-sim-packages=list		Specify the packages to be included in the build.],
[packages=disklabel
case "${enableval}" in
  yes)	;;
  no)	AC_MSG_ERROR("List of packages must be specified for --enable-sim-packages"); packages="";;
  ,*)   packages="${packages}${enableval}";;
  *,)   packages="${enableval}${packages}";;
  *)	packages="${enableval}"'';;
esac
sim_pk_src=`echo $packages | sed -e 's/,/.c pk_/g' -e 's/^/pk_/' -e 's/$/.c/'`
sim_pk_obj=`echo $sim_pk_src | sed -e 's/\.c/.o/g'`
if test x"$silent" != x"yes" && test x"$packages" != x""; then
  echo "Setting packages to $sim_pk_src, $sim_pk_obj"
fi],[packages=disklabel
sim_pk_src=`echo $packages | sed -e 's/,/.c pk_/g' -e 's/^/pk_/' -e 's/$/.c/'`
sim_pk_obj=`echo $sim_pk_src | sed -e 's/\.c/.o/g'`
if test x"$silent" != x"yes"; then
  echo "Setting packages to $sim_pk_src, $sim_pk_obj"
fi])dnl


AC_ARG_ENABLE(sim-smp,
[  --enable-sim-smp=n			Specify number of processors to configure for.],
[case "${enableval}" in
  yes)	sim_smp="-DWITH_SMP=5" ; sim_igen_smp="-N 5";;
  no)	sim_smp="-DWITH_SMP=0" ; sim_igen_smp="-N 0";;
  *)	sim_smp="-DWITH_SMP=$enableval" ; sim_igen_smp="-N $enableval";;
esac
if test x"$silent" != x"yes" && test x"$sim_smp" != x""; then
  echo "Setting smp flags = $sim_smp" 6>&1
fi],[sim_smp="-DWITH_SMP=5" ; sim_igen_smp="-N 5"
if test x"$silent" != x"yes"; then
  echo "Setting smp flags = $sim_smp" 6>&1
fi])dnl


AC_ARG_ENABLE(sim-switch,
[  --enable-sim-switch			Use a switch instead of a table for instruction call.],
[case "${enableval}" in
  yes)	sim_switch="-s";;
  no)	sim_switch="";;
  *)	AC_MSG_ERROR("--enable-sim-switch does not take a value"); sim_switch="";;
esac
if test x"$silent" != x"yes" && test x"$sim_switch" != x""; then
  echo "Setting switch flags = $sim_switch" 6>&1
fi],[sim_switch="";
if test x"$silent" != x"yes"; then
  echo "Setting switch flags = $sim_switch" 6>&1
fi])dnl


AC_ARG_ENABLE(sim-timebase,
[  --enable-sim-timebase			Specify whether the PPC timebase is supported.],
[case "${enableval}" in
  yes)	sim_timebase="-DWITH_TIME_BASE=1";;
  no)	sim_timebase="-DWITH_TIME_BASE=0";;
  *)	AC_MSG_ERROR("--enable-sim-timebase does not take a value"); sim_timebase="";;
esac
if test x"$silent" != x"yes" && test x"$sim_timebase" != x""; then
  echo "Setting timebase flags = $sim_timebase" 6>&1
fi],[sim_timebase=""])dnl


AC_ARG_ENABLE(sim-xor-endian,
[  --enable-sim-xor-endian=n		Specify number bytes involved in PowerPC XOR bi-endian mode (default 8).],
[case "${enableval}" in
  yes)	sim_xor_endian="-DWITH_XOR_ENDIAN=8";;
  no)	sim_xor_endian="-DWITH_XOR_ENDIAN=0";;
  *)	sim_xor_endian="-DWITH_XOR_ENDIAN=$enableval";;
esac
if test x"$silent" != x"yes" && test x"$sim_xor_endian" != x""; then
  echo "Setting xor-endian flag = $sim_xor_endian" 6>&1
fi],[sim_xor_endian=""])dnl


case ${host} in
  *mingw32*)
    AC_DEFINE(USE_WIN32API, 1,
              [Define if we should use the Windows API, instead of the 
	       POSIX API.  On Windows, we use the Windows API when 
	       building for MinGW, but the POSIX API when building 
	       for Cygwin.])
    ;;
esac	    

AC_CONFIG_HEADER(config.h:config.in)


dnl Figure out what type of termio/termios support there is
sim_termio=""
AC_MSG_CHECKING(for struct termios)
AC_CACHE_VAL(ac_cv_termios_struct,
[AC_TRY_COMPILE([#include <sys/types.h>
#include <sys/termios.h>],
[static struct termios x;
 x.c_iflag = 0;
 x.c_oflag = 0;
 x.c_cflag = 0;
 x.c_lflag = 0;
 x.c_cc[NCCS] = 0;],
ac_cv_termios_struct=yes, ac_cv_termios_struct=no)])
AC_MSG_RESULT($ac_cv_termios_struct)
if test $ac_cv_termios_struct = yes; then
  sim_termio="$sim_termio -DHAVE_TERMIOS_STRUCTURE"
fi

if test "$ac_cv_termios_struct" = "yes"; then
  AC_MSG_CHECKING(for c_line field in struct termios)
  AC_CACHE_VAL(ac_cv_termios_cline,
  [AC_TRY_COMPILE([#include <sys/types.h>
#include <sys/termios.h>],
[static struct termios x; x.c_line = 0;],
  ac_cv_termios_cline=yes, ac_cv_termios_cline=no)])

  AC_MSG_RESULT($ac_cv_termios_cline)
  if test $ac_cv_termios_cline = yes; then
    sim_termio="$sim_termio -DHAVE_TERMIOS_CLINE"
  fi
else
  ac_cv_termios_cline=no
fi

if test "$ac_cv_termios_struct" != "yes"; then
  AC_MSG_CHECKING(for struct termio)
  AC_CACHE_VAL(ac_cv_termio_struct,
  [AC_TRY_COMPILE([#include <sys/types.h>
#include <sys/termio.h>],
[static struct termio x;
 x.c_iflag = 0;
 x.c_oflag = 0;
 x.c_cflag = 0;
 x.c_lflag = 0;
 x.c_cc[NCC] = 0;],
ac_cv_termio_struct=yes, ac_cv_termio_struct=no)])
  AC_MSG_RESULT($ac_cv_termio_struct)
  if test $ac_cv_termio_struct = yes; then
    sim_termio="$sim_termio -DHAVE_TERMIO_STRUCTURE"
  fi
else
  ac_cv_termio_struct=no
fi

if test "$ac_cv_termio_struct" = "yes"; then
  AC_MSG_CHECKING(for c_line field in struct termio)
  AC_CACHE_VAL(ac_cv_termio_cline,
  [AC_TRY_COMPILE([#include <sys/types.h>
#include <sys/termio.h>],
[static struct termio x; x.c_line = 0;],
  ac_cv_termio_cline=yes, ac_cv_termio_cline=no)])

  AC_MSG_RESULT($ac_cv_termio_cline)
  if test $ac_cv_termio_cline = yes; then
    sim_termio="$sim_termio -DHAVE_TERMIO_CLINE"
  fi
else
  ac_cv_termio_cline=no
fi

dnl Check for struct statfs
AC_MSG_CHECKING(for struct statfs)
AC_CACHE_VAL(ac_cv_struct_statfs,
[AC_TRY_COMPILE([#include <sys/types.h>
#ifdef HAVE_SYS_PARAM_H
#include <sys/param.h>
#endif
#ifdef HAVE_SYS_MOUNT_H
#include <sys/mount.h>
#endif
#ifdef HAVE_SYS_VFS_H
#include <sys/vfs.h>
#endif
#ifdef HAVE_SYS_STATFS_H
#include <sys/statfs.h>
#endif],
[static struct statfs s;],
ac_cv_struct_statfs=yes, ac_cv_struct_statfs=no)])
AC_MSG_RESULT($ac_cv_struct_statfs)
if test $ac_cv_struct_statfs = yes; then
  AC_DEFINE(HAVE_STRUCT_STATFS, 1,
	    [Define if struct statfs is defined in <sys/mount.h>])
fi

AC_CHECK_TYPES(long long)

dnl Figure out if /dev/zero exists or not
sim_devzero=""
AC_MSG_CHECKING(for /dev/zero)
AC_CACHE_VAL(ac_cv_devzero,
[AC_TRY_RUN([#include <fcntl.h>
main () {
  char buf[2048];
  int i;
  int fd = open ("/dev/zero", O_RDONLY);
  if (fd < 0)
    return 1;
  for (i = 0; i < sizeof (buf); i++)
    buf[i] = 1;
  if (read (fd, buf, sizeof (buf)) != sizeof (buf))
    return 1;
  for (i = 0; i < sizeof (buf); i++)
    if (buf[i])
      return 1;
  return 0;
}],[ac_cv_devzero=yes],[ac_cv_devzero=no],[ac_cv_devzero=no])])
AC_MSG_RESULT($ac_cv_devzero)
if test $ac_cv_devzero = yes; then
  sim_devzero="-DHAVE_DEVZERO"
else
  sim_devzero=""
fi

dnl Figure out if we are in the new Cygnus tree with a common directory or not
AC_MSG_CHECKING(for common simulator directory)
if test -f "${srcdir}/../common/callback.c"; then
  AC_MSG_RESULT(yes)
  sim_callback="callback.o targ-map.o"
  sim_targ_vals="targ-vals.h targ-map.c targ-vals.def"
else
  AC_MSG_RESULT(no)
  sim_callback=""
  sim_targ_vals=""
fi

AC_MSG_CHECKING(for common simulator directory fpu implementation)
if test -f "${srcdir}/../common/sim-fpu.c"; then
  AC_MSG_RESULT(yes)
  sim_fpu_cflags="-DHAVE_COMMON_FPU -I../common -I${srcdir}/../common"
  sim_fpu="sim-fpu.o"
else
  AC_MSG_RESULT(no)
  sim_fpu_cflags=
  sim_fpu=
fi

# Since we run commands on the build system, we have to create a
# separate config header for the build system if build != host.
if test x$host = x$build; then
  AC_CONFIG_COMMANDS([build-config.h],[cp config.h build-config.h])
else
  tempdir=build.$$
  rm -rf $tempdir
  mkdir $tempdir
  cd $tempdir
  case ${srcdir} in
  /* | [A-Za-z]:[\\/]* ) realsrcdir=${srcdir};;
  *) realsrcdir=../${srcdir};;
  esac
  saved_CFLAGS="${CFLAGS}"
  # Put a plausible default for CC_FOR_BUILD in Makefile.
  if test "x$cross_compiling" = "xno"; then
    CC_FOR_BUILD='$(CC)'
  else
    CC_FOR_BUILD=gcc
  fi
  CC="${CC_FOR_BUILD}" CFLAGS="${CFLAGS_FOR_BUILD-${CFLAGS}}" \
  LDFLAGS="${LDFLAGS_FOR_BUILD}" \
  ${realsrcdir}/configure \
    --enable-languages=${enable_languages-all} \
    --target=$target_alias --host=$build_alias --build=$build_alias
  CFLAGS="${saved_CFLAGS}"
  mv config.h ../build-config.h
  cd ..
  rm -rf $tempdir
fi

AC_SUBST(sim_line_nr)
AC_SUBST(sim_opcode)
AC_SUBST(sim_switch)
AC_SUBST(sim_dup)
AC_SUBST(sim_decode_mechanism)
AC_SUBST(sim_jump)
AC_SUBST(sim_filter)
AC_SUBST(sim_icache)
AC_SUBST(sim_hw_src)
AC_SUBST(sim_hw_obj)
AC_SUBST(sim_pk_src)
AC_SUBST(sim_pk_obj)
AC_SUBST(sim_xor_endian)
AC_SUBST(sim_smp)
AC_SUBST(sim_igen_smp)
AC_SUBST(sim_bitsize)
AC_SUBST(sim_hostbitsize)
AC_SUBST(sim_timebase)
AC_SUBST(sim_float)
AC_SUBST(sim_monitor)
AC_SUBST(sim_model)
AC_SUBST(sim_default_model)
AC_SUBST(sim_model_issue)
AC_SUBST(sim_termio)
AC_SUBST(sim_devzero)
AC_SUBST(sim_callback)
AC_SUBST(sim_targ_vals)
AC_SUBST(sim_fpu_cflags)
AC_SUBST(sim_fpu)

AC_OUTPUT(Makefile,
[case x$CONFIG_HEADERS in xconfig.h:config.in) echo > stamp-h ;; esac])