configure

Newlib 嵌入式 C库 标准实现代码

# AIX 4 /usr/bin/installbsd, which doesn't work without a -g flag
# AFS /usr/afsws/bin/install, which mishandles nonexistent args
# SVR4 /usr/ucb/install, which tries to use the nonexistent group "staff"
# OS/2's system install, which has a completely different semantic
# ./install, which can be erroneously created by make from ./install.sh.
{ echo "$as_me:$LINENO: checking for a BSD-compatible install" >&5
echo $ECHO_N "checking for a BSD-compatible install... $ECHO_C" >&6; }
if test -z "$INSTALL"; then
if test "${ac_cv_path_install+set}" = set; then
  echo $ECHO_N "(cached) $ECHO_C" >&6
else
  as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
for as_dir in $PATH
do
  IFS=$as_save_IFS
  test -z "$as_dir" && as_dir=.
  # Account for people who put trailing slashes in PATH elements.
case $as_dir/ in
  ./ | .// | /cC/* | \
  /etc/* | /usr/sbin/* | /usr/etc/* | /sbin/* | /usr/afsws/bin/* | \
  ?:\\/os2\\/install\\/* | ?:\\/OS2\\/INSTALL\\/* | \
  /usr/ucb/* ) ;;
  *)
    # OSF1 and SCO ODT 3.0 have their own names for install.
    # Don't use installbsd from OSF since it installs stuff as root
    # by default.
    for ac_prog in ginstall scoinst install; do
      for ac_exec_ext in '' $ac_executable_extensions; do
	if { test -f "$as_dir/$ac_prog$ac_exec_ext" && $as_test_x "$as_dir/$ac_prog$ac_exec_ext"; }; then
	  if test $ac_prog = install &&
	    grep dspmsg "$as_dir/$ac_prog$ac_exec_ext" >/dev/null 2>&1; then
	    # AIX install.  It has an incompatible calling convention.
	    :
	  elif test $ac_prog = install &&
	    grep pwplus "$as_dir/$ac_prog$ac_exec_ext" >/dev/null 2>&1; then
	    # program-specific install script used by HP pwplus--don't use.
	    :
	  else
	    ac_cv_path_install="$as_dir/$ac_prog$ac_exec_ext -c"
	    break 3
	  fi
	fi
      done
    done
    ;;
esac
done
IFS=$as_save_IFS


fi
  if test "${ac_cv_path_install+set}" = set; then
    INSTALL=$ac_cv_path_install
  else
    # As a last resort, use the slow shell script.  Don't cache a
    # value for INSTALL within a source directory, because that will
    # break other packages using the cache if that directory is
    # removed, or if the value is a relative name.
    INSTALL=$ac_install_sh
  fi
fi
{ echo "$as_me:$LINENO: result: $INSTALL" >&5
echo "${ECHO_T}$INSTALL" >&6; }

# Use test -z because SunOS4 sh mishandles braces in ${var-val}.
# It thinks the first close brace ends the variable substitution.
test -z "$INSTALL_PROGRAM" && INSTALL_PROGRAM='${INSTALL}'

test -z "$INSTALL_SCRIPT" && INSTALL_SCRIPT='${INSTALL}'

test -z "$INSTALL_DATA" && INSTALL_DATA='${INSTALL} -m 644'

{ echo "$as_me:$LINENO: checking whether build environment is sane" >&5
echo $ECHO_N "checking whether build environment is sane... $ECHO_C" >&6; }
# Just in case
sleep 1
echo timestamp > conftest.file
# Do `set' in a subshell so we don't clobber the current shell's
# arguments.  Must try -L first in case configure is actually a
# symlink; some systems play weird games with the mod time of symlinks
# (eg FreeBSD returns the mod time of the symlink's containing
# directory).
if (
   set X `ls -Lt $srcdir/configure conftest.file 2> /dev/null`
   if test "$*" = "X"; then
      # -L didn't work.
      set X `ls -t $srcdir/configure conftest.file`
   fi
   rm -f conftest.file
   if test "$*" != "X $srcdir/configure conftest.file" \
      && test "$*" != "X conftest.file $srcdir/configure"; then

      # If neither matched, then we have a broken ls.  This can happen
      # if, for instance, CONFIG_SHELL is bash and it inherits a
      # broken ls alias from the environment.  This has actually
      # happened.  Such a system could not be considered "sane".
      { { echo "$as_me:$LINENO: error: ls -t appears to fail.  Make sure there is not a broken
alias in your environment" >&5
echo "$as_me: error: ls -t appears to fail.  Make sure there is not a broken
alias in your environment" >&2;}
   { (exit 1); exit 1; }; }
   fi

   test "$2" = conftest.file
   )
then
   # Ok.
   :
else
   { { echo "$as_me:$LINENO: error: newly created file is older than distributed files!
Check your system clock" >&5
echo "$as_me: error: newly created file is older than distributed files!
Check your system clock" >&2;}
   { (exit 1); exit 1; }; }
fi
{ echo "$as_me:$LINENO: result: yes" >&5
echo "${ECHO_T}yes" >&6; }
test "$program_prefix" != NONE &&
  program_transform_name="s&^&$program_prefix&;$program_transform_name"
# Use a double $ so make ignores it.
test "$program_suffix" != NONE &&
  program_transform_name="s&\$&$program_suffix&;$program_transform_name"
# Double any \ or $.  echo might interpret backslashes.
# By default was `s,x,x', remove it if useless.
cat <<\_ACEOF >conftest.sed
s/[\\$]/&&/g;s/;s,x,x,$//
_ACEOF
program_transform_name=`echo $program_transform_name | sed -f conftest.sed`
rm -f conftest.sed

# expand $ac_aux_dir to an absolute path
am_aux_dir=`cd $ac_aux_dir && pwd`

test x"${MISSING+set}" = xset || MISSING="\${SHELL} $am_aux_dir/missing"
# Use eval to expand $SHELL
if eval "$MISSING --run true"; then
  am_missing_run="$MISSING --run "
else
  am_missing_run=
  { echo "$as_me:$LINENO: WARNING: \`missing' script is too old or missing" >&5
echo "$as_me: WARNING: \`missing' script is too old or missing" >&2;}
fi

if mkdir -p --version . >/dev/null 2>&1 && test ! -d ./--version; then
  # We used to keeping the `.' as first argument, in order to
  # allow $(mkdir_p) to be used without argument.  As in
  #   $(mkdir_p) $(somedir)
  # where $(somedir) is conditionally defined.  However this is wrong
  # for two reasons:
  #  1. if the package is installed by a user who cannot write `.'
  #     make install will fail,
  #  2. the above comment should most certainly read
  #     $(mkdir_p) $(DESTDIR)$(somedir)
  #     so it does not work when $(somedir) is undefined and
  #     $(DESTDIR) is not.
  #  To support the latter case, we have to write
  #     test -z "$(somedir)" || $(mkdir_p) $(DESTDIR)$(somedir),
  #  so the `.' trick is pointless.
  mkdir_p='mkdir -p --'
else
  # On NextStep and OpenStep, the `mkdir' command does not
  # recognize any option.  It will interpret all options as
  # directories to create, and then abort because `.' already
  # exists.
  for d in ./-p ./--version;
  do
    test -d $d && rmdir $d
  done
  # $(mkinstalldirs) is defined by Automake if mkinstalldirs exists.
  if test -f "$ac_aux_dir/mkinstalldirs"; then
    mkdir_p='$(mkinstalldirs)'
  else
    mkdir_p='$(install_sh) -d'
  fi
fi

for ac_prog in gawk mawk nawk awk
do
  # Extract the first word of "$ac_prog", so it can be a program name with args.
set dummy $ac_prog; ac_word=$2
{ echo "$as_me:$LINENO: checking for $ac_word" >&5
echo $ECHO_N "checking for $ac_word... $ECHO_C" >&6; }
if test "${ac_cv_prog_AWK+set}" = set; then
  echo $ECHO_N "(cached) $ECHO_C" >&6
else
  if test -n "$AWK"; then
  ac_cv_prog_AWK="$AWK" # Let the user override the test.
else
as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
for as_dir in $PATH
do
  IFS=$as_save_IFS
  test -z "$as_dir" && as_dir=.
  for ac_exec_ext in '' $ac_executable_extensions; do
  if { test -f "$as_dir/$ac_word$ac_exec_ext" && $as_test_x "$as_dir/$ac_word$ac_exec_ext"; }; then
    ac_cv_prog_AWK="$ac_prog"
    echo "$as_me:$LINENO: found $as_dir/$ac_word$ac_exec_ext" >&5
    break 2
  fi
done
done
IFS=$as_save_IFS

fi
fi
AWK=$ac_cv_prog_AWK
if test -n "$AWK"; then
  { echo "$as_me:$LINENO: result: $AWK" >&5
echo "${ECHO_T}$AWK" >&6; }
else
  { echo "$as_me:$LINENO: result: no" >&5
echo "${ECHO_T}no" >&6; }
fi


  test -n "$AWK" && break
done

{ echo "$as_me:$LINENO: checking whether ${MAKE-make} sets \$(MAKE)" >&5
echo $ECHO_N "checking whether ${MAKE-make} sets \$(MAKE)... $ECHO_C" >&6; }
set x ${MAKE-make}; ac_make=`echo "$2" | sed 's/+/p/g; s/[^a-zA-Z0-9_]/_/g'`
if { as_var=ac_cv_prog_make_${ac_make}_set; eval "test \"\${$as_var+set}\" = set"; }; then
  echo $ECHO_N "(cached) $ECHO_C" >&6
else
  cat >conftest.make <<\_ACEOF
SHELL = /bin/sh
all:
	@echo '@@@%%%=$(MAKE)=@@@%%%'
_ACEOF
# GNU make sometimes prints "make[1]: Entering...", which would confuse us.
case `${MAKE-make} -f conftest.make 2>/dev/null` in
  *@@@%%%=?*=@@@%%%*)
    eval ac_cv_prog_make_${ac_make}_set=yes;;
  *)
    eval ac_cv_prog_make_${ac_make}_set=no;;
esac
rm -f conftest.make
fi
if eval test \$ac_cv_prog_make_${ac_make}_set = yes; then
  { echo "$as_me:$LINENO: result: yes" >&5
echo "${ECHO_T}yes" >&6; }
  SET_MAKE=
else
  { echo "$as_me:$LINENO: result: no" >&5
echo "${ECHO_T}no" >&6; }
  SET_MAKE="MAKE=${MAKE-make}"
fi

rm -rf .tst 2>/dev/null
mkdir .tst 2>/dev/null
if test -d .tst; then
  am__leading_dot=.
else
  am__leading_dot=_
fi
rmdir .tst 2>/dev/null

DEPDIR="${am__leading_dot}deps"

ac_config_commands="$ac_config_commands depfiles"


am_make=${MAKE-make}
cat > confinc << 'END'
am__doit:
	@echo done
.PHONY: am__doit
END
# If we don't find an include directive, just comment out the code.
{ echo "$as_me:$LINENO: checking for style of include used by $am_make" >&5
echo $ECHO_N "checking for style of include used by $am_make... $ECHO_C" >&6; }
am__include="#"
am__quote=
_am_result=none
# First try GNU make style include.
echo "include confinc" > confmf
# We grep out `Entering directory' and `Leaving directory'
# messages which can occur if `w' ends up in MAKEFLAGS.
# In particular we don't look at `^make:' because GNU make might
# be invoked under some other name (usually "gmake"), in which
# case it prints its new name instead of `make'.
if test "`$am_make -s -f confmf 2> /dev/null | grep -v 'ing directory'`" = "done"; then
   am__include=include
   am__quote=
   _am_result=GNU
fi
# Now try BSD make style include.
if test "$am__include" = "#"; then
   echo '.include "confinc"' > confmf
   if test "`$am_make -s -f confmf 2> /dev/null`" = "done"; then
      am__include=.include
      am__quote="\""
      _am_result=BSD
   fi
fi


{ echo "$as_me:$LINENO: result: $_am_result" >&5
echo "${ECHO_T}$_am_result" >&6; }
rm -f confinc confmf

# Check whether --enable-dependency-tracking was given.
if test "${enable_dependency_tracking+set}" = set; then
  enableval=$enable_dependency_tracking;
fi

if test "x$enable_dependency_tracking" != xno; then
  am_depcomp="$ac_aux_dir/depcomp"
  AMDEPBACKSLASH='\'
fi


if test "x$enable_dependency_tracking" != xno; then
  AMDEP_TRUE=
  AMDEP_FALSE='#'
else
  AMDEP_TRUE='#'
  AMDEP_FALSE=
fi




# Check whether --enable-multilib was given.
if test "${enable_multilib+set}" = set; then
  enableval=$enable_multilib; case "${enableval}" in
  yes) multilib=yes ;;
  no)  multilib=no ;;
  *)   { { echo "$as_me:$LINENO: error: bad value ${enableval} for multilib option" >&5
echo "$as_me: error: bad value ${enableval} for multilib option" >&2;}
   { (exit 1); exit 1; }; } ;;
 esac
else
  multilib=yes
fi

# Check whether --enable-target-optspace was given.
if test "${enable_target_optspace+set}" = set; then
  enableval=$enable_target_optspace; case "${enableval}" in
  yes) target_optspace=yes ;;
  no)  target_optspace=no ;;
  *)   { { echo "$as_me:$LINENO: error: bad value ${enableval} for target-optspace option" >&5
echo "$as_me: error: bad value ${enableval} for target-optspace option" >&2;}
   { (exit 1); exit 1; }; } ;;
 esac
else
  target_optspace=
fi

# Check whether --enable-malloc-debugging was given.
if test "${enable_malloc_debugging+set}" = set; then
  enableval=$enable_malloc_debugging; case "${enableval}" in
  yes) malloc_debugging=yes ;;
  no)  malloc_debugging=no ;;
  *)   { { echo "$as_me:$LINENO: error: bad value ${enableval} for malloc-debugging option" >&5
echo "$as_me: error: bad value ${enableval} for malloc-debugging option" >&2;}
   { (exit 1); exit 1; }; } ;;
 esac
else
  malloc_debugging=
fi

# Check whether --enable-newlib-multithread was given.
if test "${enable_newlib_multithread+set}" = set; then
  enableval=$enable_newlib_multithread; case "${enableval}" in
  yes) newlib_multithread=yes ;;
  no)  newlib_multithread=no ;;
  *)   { { echo "$as_me:$LINENO: error: bad value ${enableval} for newlib-multithread option" >&5
echo "$as_me: error: bad value ${enableval} for newlib-multithread option" >&2;}
   { (exit 1); exit 1; }; } ;;
 esac
else
  newlib_multithread=yes
fi

# Check whether --enable-newlib-iconv was given.
if test "${enable_newlib_iconv+set}" = set; then
  enableval=$enable_newlib_iconv; if test "${newlib_iconv+set}" != set; then
   case "${enableval}" in
     yes) newlib_iconv=yes ;;
     no)  newlib_iconv=no ;;
     *)   { { echo "$as_me:$LINENO: error: bad value ${enableval} for newlib-iconv option" >&5
echo "$as_me: error: bad value ${enableval} for newlib-iconv option" >&2;}
   { (exit 1); exit 1; }; } ;;
   esac
 fi
else
  newlib_iconv=${newlib_iconv}
fi

# Check whether --enable-newlib-elix-level was given.
if test "${enable_newlib_elix_level+set}" = set; then
  enableval=$enable_newlib_elix_level; case "${enableval}" in
  0)   newlib_elix_level=0 ;;
  1)   newlib_elix_level=1 ;;
  2)   newlib_elix_level=2 ;;
  3)   newlib_elix_level=3 ;;
  4)   newlib_elix_level=4 ;;
  *)   { { echo "$as_me:$LINENO: error: bad value ${enableval} for newlib-elix-level option" >&5
echo "$as_me: error: bad value ${enableval} for newlib-elix-level option" >&2;}
   { (exit 1); exit 1; }; } ;;
 esac
else
  newlib_elix_level=0
fi

# Check whether --enable-newlib-io-float was given.
if test "${enable_newlib_io_float+set}" = set; then
  enableval=$enable_newlib_io_float; case "${enableval}" in
  yes) newlib_io_float=yes ;;
  no)  newlib_io_float=no ;;
  *)   { { echo "$as_me:$LINENO: error: bad value ${enableval} for newlib-io-float option" >&5
echo "$as_me: error: bad value ${enableval} for newlib-io-float option" >&2;}
   { (exit 1); exit 1; }; } ;;
 esac
else
  newlib_io_float=yes
fi

# Check whether --enable-newlib-supplied-syscalls was given.
if test "${enable_newlib_supplied_syscalls+set}" = set; then
  enableval=$enable_newlib_supplied_syscalls; case "${enableval}" in
  yes) newlib_may_supply_syscalls=yes ;;
  no)  newlib_may_supply_syscalls=no ;;
  *)   { { echo "$as_me:$LINENO: error: bad value ${enableval} for newlib-supplied-syscalls option" >&5
echo "$as_me: error: bad value ${enableval} for newlib-supplied-syscalls option" >&2;}
   { (exit 1); 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}../..