configure

美国加州大学操作系统课程实验平台Nachos

  esac
done
else
  echo "$as_me: failed program was:" >&5
cat conftest.$ac_ext >&5
{ { echo "$as_me:1326: error: C compiler cannot create executables" >&5
echo "$as_me: error: C compiler cannot create executables" >&2;}
   { (exit 77); exit 77; }; }
fi

ac_exeext=$ac_cv_exeext
echo "$as_me:1332: result: $ac_file" >&5
echo "${ECHO_T}$ac_file" >&6

# Check the compiler produces executables we can run.  If not, either
# the compiler is broken, or we cross compile.
echo "$as_me:1337: checking whether the C compiler works" >&5
echo $ECHO_N "checking whether the C compiler works... $ECHO_C" >&6
# FIXME: These cross compiler hacks should be removed for Autoconf 3.0
# If not cross compiling, check that we can run a simple program.
if test "$cross_compiling" != yes; then
  if { ac_try='./$ac_file'
  { (eval echo "$as_me:1343: \"$ac_try\"") >&5
  (eval $ac_try) 2>&5
  ac_status=$?
  echo "$as_me:1346: \$? = $ac_status" >&5
  (exit $ac_status); }; }; then
    cross_compiling=no
  else
    if test "$cross_compiling" = maybe; then
	cross_compiling=yes
    else
	{ { echo "$as_me:1353: error: cannot run C compiled programs.
If you meant to cross compile, use \`--host'." >&5
echo "$as_me: error: cannot run C compiled programs.
If you meant to cross compile, use \`--host'." >&2;}
   { (exit 1); exit 1; }; }
    fi
  fi
fi
echo "$as_me:1361: result: yes" >&5
echo "${ECHO_T}yes" >&6

rm -f a.out a.exe conftest$ac_cv_exeext
ac_clean_files=$ac_clean_files_save
# Check the compiler produces executables we can run.  If not, either
# the compiler is broken, or we cross compile.
echo "$as_me:1368: checking whether we are cross compiling" >&5
echo $ECHO_N "checking whether we are cross compiling... $ECHO_C" >&6
echo "$as_me:1370: result: $cross_compiling" >&5
echo "${ECHO_T}$cross_compiling" >&6

echo "$as_me:1373: checking for executable suffix" >&5
echo $ECHO_N "checking for executable suffix... $ECHO_C" >&6
if { (eval echo "$as_me:1375: \"$ac_link\"") >&5
  (eval $ac_link) 2>&5
  ac_status=$?
  echo "$as_me:1378: \$? = $ac_status" >&5
  (exit $ac_status); }; then
  # If both `conftest.exe' and `conftest' are `present' (well, observable)
# catch `conftest.exe'.  For instance with Cygwin, `ls conftest' will
# work properly (i.e., refer to `conftest.exe'), while it won't with
# `rm'.
for ac_file in `(ls conftest.exe; ls conftest; ls conftest.*) 2>/dev/null`; do
  case $ac_file in
    *.$ac_ext | *.o | *.obj | *.xcoff | *.tds | *.d | *.pdb ) ;;
    *.* ) ac_cv_exeext=`expr "$ac_file" : '[^.]*\(\..*\)'`
          export ac_cv_exeext
          break;;
    * ) break;;
  esac
done
else
  { { echo "$as_me:1394: error: cannot compute EXEEXT: cannot compile and link" >&5
echo "$as_me: error: cannot compute EXEEXT: cannot compile and link" >&2;}
   { (exit 1); exit 1; }; }
fi

rm -f conftest$ac_cv_exeext
echo "$as_me:1400: result: $ac_cv_exeext" >&5
echo "${ECHO_T}$ac_cv_exeext" >&6

rm -f conftest.$ac_ext
EXEEXT=$ac_cv_exeext
ac_exeext=$EXEEXT
echo "$as_me:1406: checking for object suffix" >&5
echo $ECHO_N "checking for object suffix... $ECHO_C" >&6
if test "${ac_cv_objext+set}" = set; then
  echo $ECHO_N "(cached) $ECHO_C" >&6
else
  cat >conftest.$ac_ext <<_ACEOF
#line 1412 "configure"
#include "confdefs.h"

int
main ()
{

  ;
  return 0;
}
_ACEOF
rm -f conftest.o conftest.obj
if { (eval echo "$as_me:1424: \"$ac_compile\"") >&5
  (eval $ac_compile) 2>&5
  ac_status=$?
  echo "$as_me:1427: \$? = $ac_status" >&5
  (exit $ac_status); }; then
  for ac_file in `(ls conftest.o conftest.obj; ls conftest.*) 2>/dev/null`; do
  case $ac_file in
    *.$ac_ext | *.xcoff | *.tds | *.d | *.pdb ) ;;
    *) ac_cv_objext=`expr "$ac_file" : '.*\.\(.*\)'`
       break;;
  esac
done
else
  echo "$as_me: failed program was:" >&5
cat conftest.$ac_ext >&5
{ { echo "$as_me:1439: error: cannot compute OBJEXT: cannot compile" >&5
echo "$as_me: error: cannot compute OBJEXT: cannot compile" >&2;}
   { (exit 1); exit 1; }; }
fi

rm -f conftest.$ac_cv_objext conftest.$ac_ext
fi
echo "$as_me:1446: result: $ac_cv_objext" >&5
echo "${ECHO_T}$ac_cv_objext" >&6
OBJEXT=$ac_cv_objext
ac_objext=$OBJEXT
echo "$as_me:1450: checking whether we are using the GNU C compiler" >&5
echo $ECHO_N "checking whether we are using the GNU C compiler... $ECHO_C" >&6
if test "${ac_cv_c_compiler_gnu+set}" = set; then
  echo $ECHO_N "(cached) $ECHO_C" >&6
else
  cat >conftest.$ac_ext <<_ACEOF
#line 1456 "configure"
#include "confdefs.h"

int
main ()
{
#ifndef __GNUC__
       choke me
#endif

  ;
  return 0;
}
_ACEOF
rm -f conftest.$ac_objext
if { (eval echo "$as_me:1471: \"$ac_compile\"") >&5
  (eval $ac_compile) 2>&5
  ac_status=$?
  echo "$as_me:1474: \$? = $ac_status" >&5
  (exit $ac_status); } &&
         { ac_try='test -s conftest.$ac_objext'
  { (eval echo "$as_me:1477: \"$ac_try\"") >&5
  (eval $ac_try) 2>&5
  ac_status=$?
  echo "$as_me:1480: \$? = $ac_status" >&5
  (exit $ac_status); }; }; then
  ac_compiler_gnu=yes
else
  echo "$as_me: failed program was:" >&5
cat conftest.$ac_ext >&5
ac_compiler_gnu=no
fi
rm -f conftest.$ac_objext conftest.$ac_ext
ac_cv_c_compiler_gnu=$ac_compiler_gnu

fi
echo "$as_me:1492: result: $ac_cv_c_compiler_gnu" >&5
echo "${ECHO_T}$ac_cv_c_compiler_gnu" >&6
GCC=`test $ac_compiler_gnu = yes && echo yes`
ac_test_CFLAGS=${CFLAGS+set}
ac_save_CFLAGS=$CFLAGS
CFLAGS="-g"
echo "$as_me:1498: checking whether $CC accepts -g" >&5
echo $ECHO_N "checking whether $CC accepts -g... $ECHO_C" >&6
if test "${ac_cv_prog_cc_g+set}" = set; then
  echo $ECHO_N "(cached) $ECHO_C" >&6
else
  cat >conftest.$ac_ext <<_ACEOF
#line 1504 "configure"
#include "confdefs.h"

int
main ()
{

  ;
  return 0;
}
_ACEOF
rm -f conftest.$ac_objext
if { (eval echo "$as_me:1516: \"$ac_compile\"") >&5
  (eval $ac_compile) 2>&5
  ac_status=$?
  echo "$as_me:1519: \$? = $ac_status" >&5
  (exit $ac_status); } &&
         { ac_try='test -s conftest.$ac_objext'
  { (eval echo "$as_me:1522: \"$ac_try\"") >&5
  (eval $ac_try) 2>&5
  ac_status=$?
  echo "$as_me:1525: \$? = $ac_status" >&5
  (exit $ac_status); }; }; then
  ac_cv_prog_cc_g=yes
else
  echo "$as_me: failed program was:" >&5
cat conftest.$ac_ext >&5
ac_cv_prog_cc_g=no
fi
rm -f conftest.$ac_objext conftest.$ac_ext
fi
echo "$as_me:1535: result: $ac_cv_prog_cc_g" >&5
echo "${ECHO_T}$ac_cv_prog_cc_g" >&6
if test "$ac_test_CFLAGS" = set; then
  CFLAGS=$ac_save_CFLAGS
elif test $ac_cv_prog_cc_g = yes; then
  if test "$GCC" = yes; then
    CFLAGS="-g -O2"
  else
    CFLAGS="-g"
  fi
else
  if test "$GCC" = yes; then
    CFLAGS="-O2"
  else
    CFLAGS=
  fi
fi
# Some people use a C++ compiler to compile C.  Since we use `exit',
# in C++ we need to declare it.  In case someone uses the same compiler
# for both compiling C and C++ we need to have the C++ compiler decide
# the declaration of exit, since it's the most demanding environment.
cat >conftest.$ac_ext <<_ACEOF
#ifndef __cplusplus
  choke me
#endif
_ACEOF
rm -f conftest.$ac_objext
if { (eval echo "$as_me:1562: \"$ac_compile\"") >&5
  (eval $ac_compile) 2>&5
  ac_status=$?
  echo "$as_me:1565: \$? = $ac_status" >&5
  (exit $ac_status); } &&
         { ac_try='test -s conftest.$ac_objext'
  { (eval echo "$as_me:1568: \"$ac_try\"") >&5
  (eval $ac_try) 2>&5
  ac_status=$?
  echo "$as_me:1571: \$? = $ac_status" >&5
  (exit $ac_status); }; }; then
  for ac_declaration in \
   ''\
   '#include <stdlib.h>' \
   'extern "C" void std::exit (int) throw (); using std::exit;' \
   'extern "C" void std::exit (int); using std::exit;' \
   'extern "C" void exit (int) throw ();' \
   'extern "C" void exit (int);' \
   'void exit (int);'
do
  cat >conftest.$ac_ext <<_ACEOF
#line 1583 "configure"
#include "confdefs.h"
#include <stdlib.h>
$ac_declaration
int
main ()
{
exit (42);
  ;
  return 0;
}
_ACEOF
rm -f conftest.$ac_objext
if { (eval echo "$as_me:1596: \"$ac_compile\"") >&5
  (eval $ac_compile) 2>&5
  ac_status=$?
  echo "$as_me:1599: \$? = $ac_status" >&5
  (exit $ac_status); } &&
         { ac_try='test -s conftest.$ac_objext'
  { (eval echo "$as_me:1602: \"$ac_try\"") >&5
  (eval $ac_try) 2>&5
  ac_status=$?
  echo "$as_me:1605: \$? = $ac_status" >&5
  (exit $ac_status); }; }; then
  :
else
  echo "$as_me: failed program was:" >&5
cat conftest.$ac_ext >&5
continue
fi
rm -f conftest.$ac_objext conftest.$ac_ext
  cat >conftest.$ac_ext <<_ACEOF
#line 1615 "configure"
#include "confdefs.h"
$ac_declaration
int
main ()
{
exit (42);
  ;
  return 0;
}
_ACEOF
rm -f conftest.$ac_objext
if { (eval echo "$as_me:1627: \"$ac_compile\"") >&5
  (eval $ac_compile) 2>&5
  ac_status=$?
  echo "$as_me:1630: \$? = $ac_status" >&5
  (exit $ac_status); } &&
         { ac_try='test -s conftest.$ac_objext'
  { (eval echo "$as_me:1633: \"$ac_try\"") >&5
  (eval $ac_try) 2>&5
  ac_status=$?
  echo "$as_me:1636: \$? = $ac_status" >&5
  (exit $ac_status); }; }; then
  break
else
  echo "$as_me: failed program was:" >&5
cat conftest.$ac_ext >&5
fi
rm -f conftest.$ac_objext conftest.$ac_ext
done
rm -f conftest*
if test -n "$ac_declaration"; then
  echo '#ifdef __cplusplus' >>confdefs.h
  echo $ac_declaration      >>confdefs.h
  echo '#endif'             >>confdefs.h
fi

else
  echo "$as_me: failed program was:" >&5
cat conftest.$ac_ext >&5
fi
rm -f conftest.$ac_objext conftest.$ac_ext
ac_ext=c
ac_cpp='$CPP $CPPFLAGS'
ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
ac_compiler_gnu=$ac_cv_c_compiler_gnu

if test -n "$ac_tool_prefix"; then
  # Extract the first word of "${ac_tool_prefix}strip", so it can be a program name with args.
set dummy ${ac_tool_prefix}strip; ac_word=$2
echo "$as_me:1666: checking for $ac_word" >&5
echo $ECHO_N "checking for $ac_word... $ECHO_C" >&6
if test "${ac_cv_prog_STRIP+set}" = set; then
  echo $ECHO_N "(cached) $ECHO_C" >&6
else
  if test -n "$STRIP"; then
  ac_cv_prog_STRIP="$STRIP" # Let the user override the test.
else
  ac_save_IFS=$IFS; IFS=$ac_path_separator
ac_dummy="$PATH"
for ac_dir in $ac_dummy; do
  IFS=$ac_save_IFS
  test -z "$ac_dir" && ac_dir=.
  $as_executable_p "$ac_dir/$ac_word" || continue
ac_cv_prog_STRIP="${ac_tool_prefix}strip"
echo "$as_me:1681: found $ac_dir/$ac_word" >&5
break
done

fi
fi
STRIP=$ac_cv_prog_STRIP
if test -n "$STRIP"; then
  echo "$as_me:1689: result: $STRIP" >&5
echo "${ECHO_T}$STRIP" >&6
else
  echo "$as_me:1692: result: no" >&5
echo "${ECHO_T}no" >&6
fi

fi
if test -z "$ac_cv_prog_STRIP"; then
  ac_ct_STRIP=$STRIP
  # Extract the first word of "strip", so it can be a program name with args.
set dummy strip; ac_word=$2
echo "$as_me:1701: checking for $ac_word" >&5
echo $ECHO_N "checking for $ac_word... $ECHO_C" >&6
if test "${ac_cv_prog_ac_ct_STRIP+set}" = set; then
  echo $ECHO_N "(cached) $ECHO_C" >&6
else
  if test -n "$ac_ct_STRIP"; then
  ac_cv_prog_ac_ct_STRIP="$ac_ct_STRIP" # Let the user override the test.
else
  ac_save_IFS=$IFS; IFS=$ac_path_separator
ac_dummy="$PATH"
for ac_dir in $ac_dummy; do
  IFS=$ac_save_IFS
  test -z "$ac_dir" && ac_dir=.
  $as_executable_p "$ac_dir/$ac_word" || continue
ac_cv_prog_ac_ct_STRIP="strip"
echo "$as_me:1716: found $ac_dir/$ac_word" >&5
break
done

fi
fi
ac_ct_STRIP=$ac_cv_prog_ac_ct_STRIP
if test -n "$ac_ct_STRIP"; then
  echo "$as_me:1724: result: $ac_ct_STRIP" >&5
echo "${ECHO_T}$ac_ct_STRIP" >&6
else
  echo "$as_me:1727: result: no" >&5
echo "${ECHO_T}no" >&6
fi

  STRIP=$ac_ct_STRIP
else
  STRIP="$ac_cv_prog_STRIP"
fi

if test -n "$ac_tool_prefix"; then
  # Extract the first word of "${ac_tool_prefix}ld", so it can be a program name with args.
set dummy ${ac_tool_prefix}ld; ac_word=$2
echo "$as_me:1739: checking for $ac_word" >&5
echo $ECHO_N "checking for $ac_word... $ECHO_C" >&6
if test "${ac_cv_prog_LD+set}" = set; then
  echo $ECHO_N "(cached) $ECHO_C" >&6
else
  if test -n "$LD"; then
  ac_cv_prog_LD="$LD" # Let the user override the test.
else
  ac_save_IFS=$IFS; IFS=$ac_path_separator
ac_dummy="$PATH"
for ac_dir in $ac_dummy; do
  IFS=$ac_save_IFS
  test -z "$ac_dir" && ac_dir=.
  $as_executable_p "$ac_dir/$ac_word" || continue
ac_cv_prog_LD="${ac_tool_prefix}ld"
echo "$as_me:1754: found $ac_dir/$ac_word" >&5
break
done

fi
fi
LD=$ac_cv_prog_LD