configure

用于嵌入式Linux系统的标准C的库函数

  no)  newlib_mb=no ;;
  *)   { echo "configure: error: bad value ${enableval} for newlib-mb option" 1>&2; exit 1; } ;;
 esac
else
  newlib_mb=
fi

# Check whether --enable-newlib-iconv or --disable-newlib-iconv was given.
if test "${enable_newlib_iconv+set}" = set; then
  enableval="$enable_newlib_iconv"
  case "${enableval}" in
  yes) newlib_iconv=yes ;;
  no)  newlib_iconv=no ;;
  *)   { echo "configure: error: bad value ${enableval} for newlib-iconv option" 1>&2; exit 1; } ;;
 esac
else
  newlib_iconv=
fi

# Check whether --enable-newlib-builtin-converters or --disable-newlib-builtin-converters was given.
if test "${enable_newlib_builtin_converters+set}" = set; then
  enableval="$enable_newlib_builtin_converters"
  if test x${enableval} = x; then
   { echo "configure: error: bad value ${enableval} for newlib-builtin-converters option - use comma-separated list" 1>&2; exit 1; }
 fi
 builtin_converters=${enableval}
 
else
  builtin_converters=
fi

# Check whether --enable-newlib-multithread or --disable-newlib-multithread was given.
if test "${enable_newlib_multithread+set}" = set; then
  enableval="$enable_newlib_multithread"
  case "${enableval}" in
  yes) newlib_multithread=yes ;;
  no)  newlib_multithread=no ;;
  *)   { echo "configure: error: bad value ${enableval} for newlib-multithread option" 1>&2; exit 1; } ;;
 esac
else
  newlib_multithread=yes
fi

# Check whether --enable-newlib-elix-level or --disable-newlib-elix-level was given.
if test "${enable_newlib_elix_level+set}" = set; then
  enableval="$enable_newlib_elix_level"
  case "${enableval}" in
  0)   newlib_elix_level=0 ;;
  1)   newlib_elix_level=1 ;;
  2)   newlib_elix_level=2 ;;
  3)   newlib_elix_level=3 ;;
  4)   newlib_elix_level=4 ;;
  *)   { echo "configure: error: bad value ${enableval} for newlib-elix-level option" 1>&2; exit 1; } ;;
 esac
else
  newlib_elix_level=0
fi

# Check whether --enable-newlib-io-float or --disable-newlib-io-float was given.
if test "${enable_newlib_io_float+set}" = set; then
  enableval="$enable_newlib_io_float"
  case "${enableval}" in
  yes) newlib_io_float=yes ;;
  no)  newlib_io_float=no ;;
  *)   { echo "configure: error: bad value ${enableval} for newlib-io-float option" 1>&2; exit 1; } ;;
 esac
else
  newlib_io_float=yes
fi

# Check whether --enable-newlib-supplied-syscalls or --disable-newlib-supplied-syscalls was given.
if test "${enable_newlib_supplied_syscalls+set}" = set; then
  enableval="$enable_newlib_supplied_syscalls"
  case "${enableval}" in
  yes) newlib_may_supply_syscalls=yes ;;
  no)  newlib_may_supply_syscalls=no ;;
  *)   { echo "configure: error: bad value ${enableval} for newlib-supplied-syscalls option" 1>&2; exit 1; } ;;
 esac
else
  newlib_may_supply_syscalls=yes
fi



if test x${newlib_may_supply_syscalls} = xyes; then
  MAY_SUPPLY_SYSCALLS_TRUE=
  MAY_SUPPLY_SYSCALLS_FALSE='#'
else
  MAY_SUPPLY_SYSCALLS_TRUE='#'
  MAY_SUPPLY_SYSCALLS_FALSE=
fi


test -z "${with_target_subdir}" && with_target_subdir=.

if test "${srcdir}" = "."; then
  if test "${with_target_subdir}" != "."; then
    newlib_basedir="${srcdir}/${with_multisrctop}../../../../.."
  else
    newlib_basedir="${srcdir}/${with_multisrctop}../../../.."
  fi
else
  newlib_basedir="${srcdir}/../../../.."
fi



# Do some error checking and defaulting for the host and target type.
# The inputs are:
#    configure --host=HOST --target=TARGET --build=BUILD NONOPT
#
# The rules are:
# 1. You are not allowed to specify --host, --target, and nonopt at the
#    same time.
# 2. Host defaults to nonopt.
# 3. If nonopt is not specified, then host defaults to the current host,
#    as determined by config.guess.
# 4. Target and build default to nonopt.
# 5. If nonopt is not specified, then target and build default to host.

# The aliases save the names the user supplied, while $host etc.
# will get canonicalized.
case $host---$target---$nonopt in
NONE---*---* | *---NONE---* | *---*---NONE) ;;
*) { echo "configure: error: can only configure for one host and one target at a time" 1>&2; exit 1; } ;;
esac


# Make sure we can run config.sub.
if ${CONFIG_SHELL-/bin/sh} $ac_config_sub sun4 >/dev/null 2>&1; then :
else { echo "configure: error: can not run $ac_config_sub" 1>&2; exit 1; }
fi

echo $ac_n "checking host system type""... $ac_c" 1>&6
echo "configure:974: checking host system type" >&5

host_alias=$host
case "$host_alias" in
NONE)
  case $nonopt in
  NONE)
    if host_alias=`${CONFIG_SHELL-/bin/sh} $ac_config_guess`; then :
    else { echo "configure: error: can not guess host type; you must specify one" 1>&2; exit 1; }
    fi ;;
  *) host_alias=$nonopt ;;
  esac ;;
esac

host=`${CONFIG_SHELL-/bin/sh} $ac_config_sub $host_alias`
host_cpu=`echo $host | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\1/'`
host_vendor=`echo $host | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\2/'`
host_os=`echo $host | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\3/'`
echo "$ac_t""$host" 1>&6

echo $ac_n "checking target system type""... $ac_c" 1>&6
echo "configure:995: checking target system type" >&5

target_alias=$target
case "$target_alias" in
NONE)
  case $nonopt in
  NONE) target_alias=$host_alias ;;
  *) target_alias=$nonopt ;;
  esac ;;
esac

target=`${CONFIG_SHELL-/bin/sh} $ac_config_sub $target_alias`
target_cpu=`echo $target | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\1/'`
target_vendor=`echo $target | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\2/'`
target_os=`echo $target | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\3/'`
echo "$ac_t""$target" 1>&6

echo $ac_n "checking build system type""... $ac_c" 1>&6
echo "configure:1013: checking build system type" >&5

build_alias=$build
case "$build_alias" in
NONE)
  case $nonopt in
  NONE) build_alias=$host_alias ;;
  *) build_alias=$nonopt ;;
  esac ;;
esac

build=`${CONFIG_SHELL-/bin/sh} $ac_config_sub $build_alias`
build_cpu=`echo $build | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\1/'`
build_vendor=`echo $build | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\2/'`
build_os=`echo $build | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\3/'`
echo "$ac_t""$build" 1>&6

test "$host_alias" != "$target_alias" &&
  test "$program_prefix$program_suffix$program_transform_name" = \
    NONENONEs,x,x, &&
  program_prefix=${target_alias}-



PACKAGE=newlib

VERSION=1.12.0

if test "`cd $srcdir && pwd`" != "`pwd`" && test -f $srcdir/config.status; then
  { echo "configure: error: source directory already configured; run "make distclean" there first" 1>&2; exit 1; }
fi
cat >> confdefs.h <<EOF
#define PACKAGE "$PACKAGE"
EOF

cat >> confdefs.h <<EOF
#define VERSION "$VERSION"
EOF



missing_dir=`cd $ac_aux_dir && pwd`
echo $ac_n "checking for working aclocal-${am__api_version}""... $ac_c" 1>&6
echo "configure:1056: checking for working aclocal-${am__api_version}" >&5
# Run test in a subshell; some versions of sh will print an error if
# an executable is not found, even if stderr is redirected.
# Redirect stdin to placate older versions of autoconf.  Sigh.
if (aclocal-${am__api_version} --version) < /dev/null > /dev/null 2>&1; then
   ACLOCAL=aclocal-${am__api_version}
   echo "$ac_t""found" 1>&6
else
   ACLOCAL="$missing_dir/missing aclocal-${am__api_version}"
   echo "$ac_t""missing" 1>&6
fi

echo $ac_n "checking for working autoconf""... $ac_c" 1>&6
echo "configure:1069: checking for working autoconf" >&5
# Run test in a subshell; some versions of sh will print an error if
# an executable is not found, even if stderr is redirected.
# Redirect stdin to placate older versions of autoconf.  Sigh.
if (autoconf --version) < /dev/null > /dev/null 2>&1; then
   AUTOCONF=autoconf
   echo "$ac_t""found" 1>&6
else
   AUTOCONF="$missing_dir/missing autoconf"
   echo "$ac_t""missing" 1>&6
fi

echo $ac_n "checking for working automake-${am__api_version}""... $ac_c" 1>&6
echo "configure:1082: checking for working automake-${am__api_version}" >&5
# Run test in a subshell; some versions of sh will print an error if
# an executable is not found, even if stderr is redirected.
# Redirect stdin to placate older versions of autoconf.  Sigh.
if (automake-${am__api_version} --version) < /dev/null > /dev/null 2>&1; then
   AUTOMAKE=automake-${am__api_version}
   echo "$ac_t""found" 1>&6
else
   AUTOMAKE="$missing_dir/missing automake-${am__api_version}"
   echo "$ac_t""missing" 1>&6
fi

echo $ac_n "checking for working autoheader""... $ac_c" 1>&6
echo "configure:1095: checking for working autoheader" >&5
# Run test in a subshell; some versions of sh will print an error if
# an executable is not found, even if stderr is redirected.
# Redirect stdin to placate older versions of autoconf.  Sigh.
if (autoheader --version) < /dev/null > /dev/null 2>&1; then
   AUTOHEADER=autoheader
   echo "$ac_t""found" 1>&6
else
   AUTOHEADER="$missing_dir/missing autoheader"
   echo "$ac_t""missing" 1>&6
fi

echo $ac_n "checking for working makeinfo""... $ac_c" 1>&6
echo "configure:1108: checking for working makeinfo" >&5
# Run test in a subshell; some versions of sh will print an error if
# an executable is not found, even if stderr is redirected.
# Redirect stdin to placate older versions of autoconf.  Sigh.
if (makeinfo --version) < /dev/null > /dev/null 2>&1; then
   MAKEINFO=makeinfo
   echo "$ac_t""found" 1>&6
else
   MAKEINFO="$missing_dir/missing makeinfo"
   echo "$ac_t""missing" 1>&6
fi



# FIXME: We temporarily define our own version of AC_PROG_CC.  This is
# copied from autoconf 2.12, but does not call AC_PROG_CC_WORKS.  We
# are probably using a cross compiler, which will not be able to fully
# link an executable.  This should really be fixed in autoconf
# itself.



# Extract the first word of "gcc", so it can be a program name with args.
set dummy gcc; ac_word=$2
echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
echo "configure:1133: checking for $ac_word" >&5
if eval "test \"`echo '$''{'ac_cv_prog_CC'+set}'`\" = set"; then
  echo $ac_n "(cached) $ac_c" 1>&6
else
  if test -n "$CC"; then
  ac_cv_prog_CC="$CC" # Let the user override the test.
else
  IFS="${IFS= 	}"; ac_save_ifs="$IFS"; IFS=":"
  ac_dummy="$PATH"
  for ac_dir in $ac_dummy; do
    test -z "$ac_dir" && ac_dir=.
    if test -f $ac_dir/$ac_word; then
      ac_cv_prog_CC="gcc"
      break
    fi
  done
  IFS="$ac_save_ifs"
fi
fi
CC="$ac_cv_prog_CC"
if test -n "$CC"; then
  echo "$ac_t""$CC" 1>&6
else
  echo "$ac_t""no" 1>&6
fi

if test -z "$CC"; then
  # Extract the first word of "cc", so it can be a program name with args.
set dummy cc; ac_word=$2
echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
echo "configure:1163: checking for $ac_word" >&5
if eval "test \"`echo '$''{'ac_cv_prog_CC'+set}'`\" = set"; then
  echo $ac_n "(cached) $ac_c" 1>&6
else
  if test -n "$CC"; then
  ac_cv_prog_CC="$CC" # Let the user override the test.
else
  IFS="${IFS= 	}"; ac_save_ifs="$IFS"; IFS=":"
  ac_prog_rejected=no
  ac_dummy="$PATH"
  for ac_dir in $ac_dummy; do
    test -z "$ac_dir" && ac_dir=.
    if test -f $ac_dir/$ac_word; then
      if test "$ac_dir/$ac_word" = "/usr/ucb/cc"; then
        ac_prog_rejected=yes
	continue
      fi
      ac_cv_prog_CC="cc"
      break
    fi
  done
  IFS="$ac_save_ifs"
if test $ac_prog_rejected = yes; then
  # We found a bogon in the path, so make sure we never use it.
  set dummy $ac_cv_prog_CC
  shift
  if test $# -gt 0; then
    # We chose a different compiler from the bogus one.
    # However, it has the same basename, so the bogon will be chosen
    # first if we set CC to just the basename; use the full file name.
    shift
    set dummy "$ac_dir/$ac_word" "$@"
    shift
    ac_cv_prog_CC="$@"
  fi
fi
fi
fi
CC="$ac_cv_prog_CC"
if test -n "$CC"; then
  echo "$ac_t""$CC" 1>&6
else
  echo "$ac_t""no" 1>&6
fi

  test -z "$CC" && { echo "configure: error: no acceptable cc found in \$PATH" 1>&2; exit 1; }
fi

echo $ac_n "checking whether we are using GNU C""... $ac_c" 1>&6
echo "configure:1212: checking whether we are using GNU C" >&5
if eval "test \"`echo '$''{'ac_cv_prog_gcc'+set}'`\" = set"; then
  echo $ac_n "(cached) $ac_c" 1>&6
else
  cat > conftest.c <<EOF
#ifdef __GNUC__
  yes;
#endif
EOF
if { ac_try='${CC-cc} -E conftest.c'; { (eval echo configure:1221: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }; } | egrep yes >/dev/null 2>&1; then
  ac_cv_prog_gcc=yes
else
  ac_cv_prog_gcc=no
fi
fi

echo "$ac_t""$ac_cv_prog_gcc" 1>&6

if test $ac_cv_prog_gcc = yes; then
  GCC=yes
  ac_test_CFLAGS="${CFLAGS+set}"
  ac_save_CFLAGS="$CFLAGS"
  CFLAGS=
  echo $ac_n "checking whether ${CC-cc} accepts -g""... $ac_c" 1>&6
echo "configure:1236: checking whether ${CC-cc} accepts -g" >&5
if eval "test \"`echo '$''{'ac_cv_prog_cc_g'+set}'`\" = set"; then
  echo $ac_n "(cached) $ac_c" 1>&6
else
  echo 'void f(){}' > conftest.c
if test -z "`${CC-cc} -g -c conftest.c 2>&1`"; then
  ac_cv_prog_cc_g=yes
else
  ac_cv_prog_cc_g=no
fi
rm -f conftest*

fi

echo "$ac_t""$ac_cv_prog_cc_g" 1>&6
  if test "$ac_test_CFLAGS" = set; then
    CFLAGS="$ac_save_CFLAGS"
  elif test $ac_cv_prog_cc_g = yes; then
    CFLAGS="-g -O2"
  else
    CFLAGS="-O2"
  fi
else