configure.in

这个是LINUX下的GDB调度工具的源码

  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-regparm,
[  --enable-sim-regparm=nr-parm		Pass parameters in registers instead of on the stack - x86/GCC specific.],
[case "${enableval}" in
  0*|1*|2*|3*|4*|5*|6*|7*|8*|9*) sim_regparm="-DWITH_REGPARM=${enableval}";;
  no)                            sim_regparm="" ;;
  yes)                           sim_regparm="-DWITH_REGPARM=3";;
  *)   AC_MSG_ERROR("Unknown value $enableval for --enable-sim-regparm"); sim_regparm="";;
esac
if test x"$silent" != x"yes" && test x"$sim_regparm" != x""; then
  echo "Setting regparm flags = $sim_regparm" 6>&1
fi],[sim_regparm=""])dnl


AC_ARG_ENABLE(sim-reserved-bits,
[  --enable-sim-reserved-bits		Specify whether to check reserved bits in instruction.],
[case "${enableval}" in
  yes)	sim_reserved="-DWITH_RESERVED_BITS=1";;
  no)	sim_reserved="-DWITH_RESERVED_BITS=0";;
  *)	AC_MSG_ERROR("--enable-sim-reserved-bits does not take a value"); sim_reserved="";;
esac
if test x"$silent" != x"yes" && test x"$sim_reserved" != x""; then
  echo "Setting reserved flags = $sim_reserved" 6>&1
fi],[sim_reserved=""])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-stdcall,
[  --enable-sim-stdcall=type		Use an alternative function call/return mechanism - x86/GCC specific.],
[case "${enableval}" in
  no)		sim_stdcall="" ;;
  std*)		sim_stdcall="-DWITH_STDCALL=1";;
  yes)		sim_stdcall="-DWITH_STDCALL=1";;
  *)   AC_MSG_ERROR("Unknown value $enableval for --enable-sim-stdcall"); sim_stdcall="";;
esac
if test x"$silent" != x"yes" && test x"$sim_stdcall" != x""; then
  echo "Setting function call flags = $sim_stdcall" 6>&1
fi],[sim_stdcall=""])dnl


AC_ARG_ENABLE(sim-stdio,
[  --enable-sim-stdio			Specify whether to use stdio for console input/output.],
[case "${enableval}" in
  yes)	sim_stdio="-DWITH_STDIO=DO_USE_STDIO";;
  no)	sim_stdio="-DWITH_STDIO=DONT_USE_STDIO";;
  *)	AC_MSG_ERROR("Unknown value $enableval passed to --enable-sim-stdio"); sim_stdio="";;
esac
if test x"$silent" != x"yes" && test x"$sim_stdio" != x""; then
  echo "Setting stdio flags = $sim_stdio" 6>&1
fi],[sim_stdio=""])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-trace,
[  --enable-sim-trace			Specify whether tracing is supported.],
[case "${enableval}" in
  yes)	sim_trace="-DWITH_TRACE=1";;
  no)	sim_trace="-DWITH_TRACE=0";;
  *)	AC_MSG_ERROR("--enable-sim-trace does not take a value"); sim_trace="";;
esac
if test x"$silent" != x"yes" && test x"$sim_trace" != x""; then
  echo "Setting trace flags = $sim_trace" 6>&1
fi],[sim_trace=""])dnl


AC_ARG_ENABLE(sim-warnings,
[  --enable-sim-warnings=opts		Extra CFLAGS for turning on compiler warnings except for idecode.o, semantics.o and psim.o],
[case "${enableval}" in
  yes)	sim_warnings="-Werror -Wall -Wpointer-arith -Wmissing-prototypes -Wmissing-declarations ";;
  no)	sim_warnings="-w";;
  *)	sim_warnings=`echo "${enableval}" | sed -e "s/,/ /g"`;;
esac
if test x"$silent" != x"yes" && test x"$sim_warnings" != x""; then
  echo "Setting warning flags = $sim_warnings" 6>&1
fi],[sim_warnings=""])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


AC_CONFIG_AUX_DIR(`cd $srcdir;pwd`/../..)
AC_CANONICAL_SYSTEM
AC_ARG_PROGRAM

. ${srcdir}/../../bfd/configure.host

AC_CONFIG_HEADER(config.h:config.in)

AC_STRUCT_ST_BLKSIZE
AC_STRUCT_ST_BLOCKS
AC_STRUCT_ST_RDEV
AC_STRUCT_TIMEZONE

AC_TYPE_GETGROUPS
AC_TYPE_MODE_T
AC_TYPE_OFF_T
AC_TYPE_PID_T
AC_TYPE_SIGNAL
AC_TYPE_SIZE_T
AC_TYPE_UID_T

AC_CHECK_FUNCS(access cfgetispeed cfgetospeed cfsetispeed cfsetospeed chdir chmod chown dup dup2 fchmod fchown fcntl fstat fstatfs getdirentries getegid geteuid getgid getpid getppid getrusage gettimeofday getuid ioctl kill link lseek lstat mkdir pipe readlink rmdir setreuid setregid stat sigprocmask stat symlink tcgetattr tcsetattr tcsendbreak tcdrain tcflush tcflow tcgetpgrp tcsetpgrp time umask unlink)

AC_CHECK_HEADERS(fcntl.h stdlib.h string.h strings.h sys/ioctl.h sys/mount.h sys/param.h sys/resource.h sys/stat.h sys/termio.h sys/termios.h sys/time.h sys/times.h sys/types.h time.h unistd.h sys/vfs.h sys/statfs.h)
AC_HEADER_DIRENT

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

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

dnl Check for exe extension
AC_EXEEXT

AC_SUBST(CC_FOR_BUILD)
AC_SUBST(CFLAGS)
AC_SUBST(HDEFINES)
AR=${AR-ar}
AC_SUBST(AR)
AC_PROG_RANLIB
AC_SUBST(sim_cflags)
AC_SUBST(sim_warnings)
AC_SUBST(sim_line_nr)
AC_SUBST(sim_config)
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_inline)
AC_SUBST(sim_bswap)
AC_SUBST(sim_endian)
AC_SUBST(sim_regparm)
AC_SUBST(sim_stdcall)
AC_SUBST(sim_xor_endian)
AC_SUBST(sim_hostendian)
AC_SUBST(sim_smp)
AC_SUBST(sim_igen_smp)
AC_SUBST(sim_bitsize)
AC_SUBST(sim_hostbitsize)
AC_SUBST(sim_env)
AC_SUBST(sim_timebase)
AC_SUBST(sim_alignment)
AC_SUBST(sim_float)
AC_SUBST(sim_trace)
AC_SUBST(sim_assert)
AC_SUBST(sim_reserved)
AC_SUBST(sim_monitor)
AC_SUBST(sim_model)
AC_SUBST(sim_default_model)
AC_SUBST(sim_model_issue)
AC_SUBST(sim_stdio)
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])