ltconfig

#! /bin/sh

# ltconfig - Create a system-specific libtool.
# Copyright (C) 1996-1999 Free Software Foundation, Inc.
# Originally by Gordon Matzigkeit <gord@gnu.ai.mit.edu>, 1996
#
# This file is free software; you can redistribute it and/or modify it
# under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
# General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
#
# As a special exception to the GNU General Public License, if you
# distribute this file as part of a program that contains a
# configuration script generated by Autoconf, you may include it under
# the same distribution terms that you use for the rest of that program.

# A lot of this script is taken from autoconf-2.10.

# Check that we are running under the correct shell.
SHELL=${CONFIG_SHELL-/bin/sh}
echo=echo
if test "X$1" = X--no-reexec; then
  # Discard the --no-reexec flag, and continue.
  shift
elif test "X$1" = X--fallback-echo; then
  # Avoid inline document here, it may be left over
  :
elif test "X`($echo '\t') 2>/dev/null`" = 'X\t'; then
  # Yippee, $echo works!
  :
else
  # Restart under the correct shell.
  exec "$SHELL" "$0" --no-reexec ${1+"$@"}
fi

if test "X$1" = X--fallback-echo; then
  # used as fallback echo
  shift
  cat <<EOF
$*
EOF
  exit 0
fi

# Find the correct PATH separator.  Usually this is `:', but
# DJGPP uses `;' like DOS.
if test "X${PATH_SEPARATOR+set}" != Xset; then
  UNAME=${UNAME-`uname 2>/dev/null`}
  case X$UNAME in
    *-DOS) PATH_SEPARATOR=';' ;;
    *)     PATH_SEPARATOR=':' ;;
  esac
fi

# The HP-UX ksh and POSIX shell print the target directory to stdout
# if CDPATH is set.
if test "X${CDPATH+set}" = Xset; then CDPATH=:; export CDPATH; fi

if test "X${echo_test_string+set}" != Xset; then
  # find a string as large as possible, as long as the shell can cope with it
  for cmd in 'sed 50q "$0"' 'sed 20q "$0"' 'sed 10q "$0"' 'sed 2q "$0"' 'echo test'; do
    # expected sizes: less than 2Kb, 1Kb, 512 bytes, 16 bytes, ...
    if (echo_test_string="`eval $cmd`") 2>/dev/null &&
       echo_test_string="`eval $cmd`" &&
       (test "X$echo_test_string" = "X$echo_test_string") 2>/dev/null; then
      break
    fi
  done
fi

if test "X`($echo '\t') 2>/dev/null`" != 'X\t' ||
   test "X`($echo "$echo_test_string") 2>/dev/null`" != X"$echo_test_string"; then
  # The Solaris, AIX, and Digital Unix default echo programs unquote
  # backslashes.  This makes it impossible to quote backslashes using
  #   echo "$something" | sed 's/\\/\\\\/g'
  #
  # So, first we look for a working echo in the user's PATH.

  IFS="${IFS= 	}"; save_ifs="$IFS"; IFS="${IFS}${PATH_SEPARATOR}"
  for dir in $PATH /usr/ucb; do
    if (test -f $dir/echo || test -f $dir/echo$ac_exeext) &&
       test "X`($dir/echo '\t') 2>/dev/null`" = 'X\t' &&
       test "X`($dir/echo "$echo_test_string") 2>/dev/null`" = X"$echo_test_string"; then
      echo="$dir/echo"
      break
    fi
  done
  IFS="$save_ifs"

  if test "X$echo" = Xecho; then
    # We didn't find a better echo, so look for alternatives.
    if test "X`(print -r '\t') 2>/dev/null`" = 'X\t' &&
       test "X`(print -r "$echo_test_string") 2>/dev/null`" = X"$echo_test_string"; then
      # This shell has a builtin print -r that does the trick.
      echo='print -r'
    elif (test -f /bin/ksh || test -f /bin/ksh$ac_exeext) &&
	 test "X$CONFIG_SHELL" != X/bin/ksh; then
      # If we have ksh, try running ltconfig again with it.
      ORIGINAL_CONFIG_SHELL="${CONFIG_SHELL-/bin/sh}"
      export ORIGINAL_CONFIG_SHELL
      CONFIG_SHELL=/bin/ksh
      export CONFIG_SHELL
      exec "$CONFIG_SHELL" "$0" --no-reexec ${1+"$@"}
    else
      # Try using printf.
      echo='printf "%s\n"'
      if test "X`($echo '\t') 2>/dev/null`" = 'X\t' &&
	 test "X`($echo "$echo_test_string") 2>/dev/null`" = X"$echo_test_string"; then
	# Cool, printf works
	:
      elif test "X`("$ORIGINAL_CONFIG_SHELL" "$0" --fallback-echo '\t') 2>/dev/null`" = 'X\t' &&
	   test "X`("$ORIGINAL_CONFIG_SHELL" "$0" --fallback-echo "$echo_test_string") 2>/dev/null`" = X"$echo_test_string"; then
	CONFIG_SHELL="$ORIGINAL_CONFIG_SHELL"
	export CONFIG_SHELL
	SHELL="$CONFIG_SHELL"
	export SHELL
	echo="$CONFIG_SHELL $0 --fallback-echo"
      elif test "X`("$CONFIG_SHELL" "$0" --fallback-echo '\t') 2>/dev/null`" = 'X\t' &&
	   test "X`("$CONFIG_SHELL" "$0" --fallback-echo "$echo_test_string") 2>/dev/null`" = X"$echo_test_string"; then
	echo="$CONFIG_SHELL $0 --fallback-echo"
      else
	# maybe with a smaller string...
	prev=:

	for cmd in 'echo test' 'sed 2q "$0"' 'sed 10q "$0"' 'sed 20q "$0"' 'sed 50q "$0"'; do
	  if (test "X$echo_test_string" = "X`eval $cmd`") 2>/dev/null; then
	    break
	  fi
	  prev="$cmd"
	done

	if test "$prev" != 'sed 50q "$0"'; then
	  echo_test_string=`eval $prev`
	  export echo_test_string
	  exec "${ORIGINAL_CONFIG_SHELL}" "$0" ${1+"$@"}
	else
	  # Oops.  We lost completely, so just stick with echo.
	  echo=echo
	fi
      fi
    fi
  fi
fi

# Sed substitution that helps us do robust quoting.  It backslashifies
# metacharacters that are still active within double-quoted strings.
Xsed='sed -e s/^X//'
sed_quote_subst='s/\([\\"\\`$\\\\]\)/\\\1/g'

# Same as above, but do not quote variable references.
double_quote_subst='s/\([\\"\\`\\\\]\)/\\\1/g'

# Sed substitution to delay expansion of an escaped shell variable in a
# double_quote_subst'ed string.
delay_variable_subst='s/\\\\\\\\\\\$/\\\\\\$/g'

# The name of this program.
progname=`$echo "X$0" | $Xsed -e 's%^.*/%%'`

# Constants:
PROGRAM=ltconfig
PACKAGE=libtool
VERSION=1.3.4-freebsd-ports
TIMESTAMP=" (1.385.2.196 1999/12/07 21:47:57)"
ac_compile='${CC-cc} -c $CFLAGS $CPPFLAGS conftest.$ac_ext 1>&5'
ac_link='${CC-cc} -o conftest $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS 1>&5'
rm="rm -f"

help="Try \`$progname --help' for more information."

# Global variables:
default_ofile=libtool
can_build_shared=yes
enable_shared=yes
# All known linkers require a `.a' archive for static linking (except M$VC,
# which needs '.lib').
enable_static=yes
enable_fast_install=yes
install_ltlibs=yes
release_suffix=yes
enable_dlopen=unknown
enable_win32_dll=no
ltmain=
silent=
srcdir=
ac_config_guess=
ac_config_sub=
host=
nonopt=
ofile="$default_ofile"
verify_host=yes
with_gcc=no
with_gnu_ld=no
need_locks=yes
ac_ext=c
objext=o
libext=a
exeext=
cache_file=

old_AR="$AR"
old_CC="$CC"
old_CFLAGS="$CFLAGS"
old_CPPFLAGS="$CPPFLAGS"
old_LDFLAGS="$LDFLAGS"
old_LD="$LD"
old_LN_S="$LN_S"
old_LIBS="$LIBS"
old_NM="$NM"
old_RANLIB="$RANLIB"
old_DLLTOOL="$DLLTOOL"
old_OBJDUMP="$OBJDUMP"
old_AS="$AS"

# Parse the command line options.
args=
prev=
for option
do
  case "$option" in
  -*=*) optarg=`echo "$option" | sed 's/[-_a-zA-Z0-9]*=//'` ;;
  *) optarg= ;;
  esac

  # If the previous option needs an argument, assign it.
  if test -n "$prev"; then
    eval "$prev=\$option"
    prev=
    continue
  fi

  case "$option" in
  --help) cat <<EOM
Usage: $progname [OPTION]... [HOST [LTMAIN]]

Generate a system-specific libtool script.

    --build                no-op to keep compatability with configure scripts generated for 1.4
    --debug                enable verbose shell tracing
    --disable-shared       do not build shared libraries
    --disable-static       do not build static libraries
    --disable-fast-install do not optimize for fast installation
    --disable-ltlibs       don't install the .la archives
    --release-ignore       don't use -release specification
    --release-suffix       use -release suffix for all files
    --enable-dlopen        enable dlopen support
    --enable-win32-dll     enable building dlls on win32 hosts
    --help                 display this help and exit
    --no-verify            do not verify that HOST is a valid host type
-o, --output=FILE          specify the output file [default=$default_ofile]
    --quiet                same as \`--silent'
    --silent               do not print informational messages
    --srcdir=DIR           find \`config.guess' in DIR
    --version              output version information and exit
    --with-gcc             assume that the GNU C compiler will be used
    --with-gnu-ld          assume that the C compiler uses the GNU linker
    --disable-lock         disable file locking
    --cache-file=FILE      configure cache file

LTMAIN is the \`ltmain.sh' shell script fragment or \`ltmain.c' program
that provides basic libtool functionality.

HOST is the canonical host system name [default=guessed].
EOM
  exit 0
  ;;

  --build=*) ;;

  --debug)
    echo "$progname: enabling shell trace mode"
    set -x
    ;;

  --disable-shared) enable_shared=no ;;

  --disable-static) enable_static=no ;;

  --disable-fast-install) enable_fast_install=no ;;

  --disable-ltlibs) install_ltlibs=no ;;

  --release-ignore) release_suffix=no ;;

  --release-suffix) release_suffix=all ;;

  --enable-dlopen) enable_dlopen=yes ;;

  --enable-win32-dll) enable_win32_dll=yes ;;

  --quiet | --silent) silent=yes ;;

  --srcdir) prev=srcdir ;;
  --srcdir=*) srcdir="$optarg" ;;

  --no-verify) verify_host=no ;;

  --output | -o) prev=ofile ;;
  --output=*) ofile="$optarg" ;;

  --version) echo "$PROGRAM (GNU $PACKAGE) $VERSION$TIMESTAMP"; exit 0 ;;

  --with-gcc) with_gcc=yes ;;
  --with-gnu-ld) with_gnu_ld=yes ;;

  --disable-lock) need_locks=no ;;

  --cache-file=*) cache_file="$optarg" ;;

  -*)
    echo "$progname: unrecognized option \`$option'" 1>&2
    echo "$help" 1>&2
    exit 1
    ;;

  *)
    if test -z "$ltmain"; then
      ltmain="$option"
    elif test -z "$host"; then
# This generates an unnecessary warning for sparc-sun-solaris4.1.3_U1
#      if test -n "`echo $option| sed 's/[-a-z0-9.]//g'`"; then
#        echo "$progname: warning \`$option' is not a valid host type" 1>&2
#      fi
      host="$option"
    else
      echo "$progname: too many arguments" 1>&2
      echo "$help" 1>&2
      exit 1
    fi ;;
  esac
done

if test -z "$ltmain"; then
  echo "$progname: you must specify a LTMAIN file" 1>&2
  echo "$help" 1>&2
  exit 1
fi

if test ! -f "$ltmain"; then
  echo "$progname: \`$ltmain' does not exist" 1>&2
  echo "$help" 1>&2
  exit 1
fi

# Quote any args containing shell metacharacters.
ltconfig_args=
for arg
do
  case "$arg" in
  *" "*|*"	"*|*[\[\]\~\#\$\^\&\*\(\)\{\}\\\|\;\<\>\?]*)
  ltconfig_args="$ltconfig_args '$arg'" ;;
  *) ltconfig_args="$ltconfig_args $arg" ;;
  esac
done

# A relevant subset of AC_INIT.

# File descriptor usage:
# 0 standard input
# 1 file creation
# 2 errors and warnings
# 3 some systems may open it to /dev/tty
# 4 used on the Kubota Titan
# 5 compiler messages saved in config.log
# 6 checking for... messages and results
if test "$silent" = yes; then
  exec 6>/dev/null
else
  exec 6>&1
fi
exec 5>>./config.log

# NLS nuisances.
# Only set LANG and LC_ALL to C if already set.
# These must not be set unconditionally because not all systems understand
# e.g. LANG=C (notably SCO).
if test "X${LC_ALL+set}" = Xset; then LC_ALL=C; export LC_ALL; fi
if test "X${LANG+set}"   = Xset; then LANG=C;   export LANG;   fi

if test -n "$cache_file" && test -r "$cache_file"; then
  echo "loading cache $cache_file within ltconfig"
  . $cache_file
fi

if (echo "testing\c"; echo 1,2,3) | grep c >/dev/null; then
  # Stardent Vistra SVR4 grep lacks -e, says ghazi@caip.rutgers.edu.
  if (echo -n testing; echo 1,2,3) | sed s/-n/xn/ | grep xn >/dev/null; then
    ac_n= ac_c='
' ac_t='	'
  else
    ac_n=-n ac_c= ac_t=
  fi
else
  ac_n= ac_c='\c' ac_t=
fi

if test -z "$srcdir"; then
  # Assume the source directory is the same one as the path to LTMAIN.
  srcdir=`$echo "X$ltmain" | $Xsed -e 's%/[^/]*$%%'`
  test "$srcdir" = "$ltmain" && srcdir=.
fi

trap "$rm conftest*; exit 1" 1 2 15
if test "$verify_host" = yes; then
  # Check for config.guess and config.sub.
  ac_aux_dir=
  for ac_dir in $srcdir $srcdir/.. $srcdir/../..; do
    if test -f $ac_dir/config.guess; then
      ac_aux_dir=$ac_dir
      break
    fi
  done
  if test -z "$ac_aux_dir"; then
    echo "$progname: cannot find config.guess in $srcdir $srcdir/.. $srcdir/../.." 1>&2
    echo "$help" 1>&2
    exit 1
  fi
  ac_config_guess=$ac_aux_dir/config.guess
  ac_config_sub=$ac_aux_dir/config.sub

  # Make sure we can run config.sub.
  if $SHELL $ac_config_sub sun4 >/dev/null 2>&1; then :
  else
    echo "$progname: cannot run $ac_config_sub" 1>&2
    echo "$help" 1>&2
    exit 1
  fi

  echo $ac_n "checking host system type""... $ac_c" 1>&6

  host_alias=$host
  case "$host_alias" in
  "")
    if host_alias=`$SHELL $ac_config_guess`; then :
    else
      echo "$progname: cannot guess host type; you must specify one" 1>&2
      echo "$help" 1>&2
      exit 1
    fi ;;
  esac
  host=`$SHELL $ac_config_sub $host_alias`
  echo "$ac_t$host" 1>&6

  # Make sure the host verified.
  test -z "$host" && exit 1

elif test -z "$host"; then
  echo "$progname: you must specify a host type if you use \`--no-verify'" 1>&2
  echo "$help" 1>&2
  exit 1
else
  host_alias=$host
fi

# Transform linux* to *-*-linux-gnu*, to support old configure scripts.
case "$host_os" in
linux-gnu*) ;;
linux*) host=`echo $host | sed 's/^\(.*-.*-linux\)\(.*\)$/\1-gnu\2/'`
esac

host_cpu=`echo $host | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\1/'`
host_vendor=`echo $host | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\2/'`
host_os=`echo $host | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\3/'`

case "$host_os" in
aix3*)
  # AIX sometimes has problems with the GCC collect2 program.  For some
  # reason, if we set the COLLECT_NAMES environment variable, the problems
  # vanish in a puff of smoke.
  if test "X${COLLECT_NAMES+set}" != Xset; then
    COLLECT_NAMES=
    export COLLECT_NAMES
  fi
  ;;
esac

# Determine commands to create old-style static archives.
old_archive_cmds='$AR cru $oldlib$oldobjs'
old_postinstall_cmds='chmod 644 $oldlib'
old_postuninstall_cmds=

# Set a sane default for `AR'.
test -z "$AR" && AR=ar

# Set a sane default for `OBJDUMP'.
test -z "$OBJDUMP" && OBJDUMP=objdump

# If RANLIB is not set, then run the test.
if test "${RANLIB+set}" != "set"; then
  result=no

  echo $ac_n "checking for ranlib... $ac_c" 1>&6
  IFS="${IFS= 	}"; save_ifs="$IFS"; IFS="${IFS}${PATH_SEPARATOR}"
  for dir in $PATH; do
    test -z "$dir" && dir=.
    if test -f $dir/ranlib || test -f $dir/ranlib$ac_exeext; then
      RANLIB="ranlib"
      result="ranlib"
      break
    fi
  done
  IFS="$save_ifs"

  echo "$ac_t$result" 1>&6
fi

if test -n "$RANLIB"; then
  old_archive_cmds="$old_archive_cmds~\$RANLIB \$oldlib"
  old_postinstall_cmds="\$RANLIB \$oldlib~$old_postinstall_cmds"
fi

# Set sane defaults for `DLLTOOL', `OBJDUMP', and `AS', used on cygwin.
test -z "$DLLTOOL" && DLLTOOL=dlltool
test -z "$OBJDUMP" && OBJDUMP=objdump
test -z "$AS" && AS=as

# Check to see if we are using GCC.
if test "$with_gcc" != yes || test -z "$CC"; then
  # If CC is not set, then try to find GCC or a usable CC.
  if test -z "$CC"; then
    echo $ac_n "checking for gcc... $ac_c" 1>&6
    IFS="${IFS= 	}"; save_ifs="$IFS"; IFS="${IFS}${PATH_SEPARATOR}"
    for dir in $PATH; do
      test -z "$dir" && dir=.
      if test -f $dir/gcc || test -f $dir/gcc$ac_exeext; then
	CC="gcc"
	break
      fi
    done
    IFS="$save_ifs"

    if test -n "$CC"; then
      echo "$ac_t$CC" 1>&6
    else
      echo "$ac_t"no 1>&6
    fi
  fi

  # Not "gcc", so try "cc", rejecting "/usr/ucb/cc".
  if test -z "$CC"; then
    echo $ac_n "checking for cc... $ac_c" 1>&6
    IFS="${IFS= 	}"; save_ifs="$IFS"; IFS="${IFS}${PATH_SEPARATOR}"
    cc_rejected=no
    for dir in $PATH; do
      test -z "$dir" && dir=.
      if test -f $dir/cc || test -f $dir/cc$ac_exeext; then
	if test "$dir/cc" = "/usr/ucb/cc"; then
	  cc_rejected=yes
	  continue
	fi
	CC="cc"
	break
      fi
    done
    IFS="$save_ifs"
    if test $cc_rejected = yes; then
      # We found a bogon in the path, so make sure we never use it.
      set dummy $CC
      shift
      if test $# -gt 0; then
	# We chose a different compiler from the bogus one.
	# However, it has the same name, so the bogon will be chosen
	# first if we set CC to just the name; use the full file name.
	shift
	set dummy "$dir/cc" "$@"
	shift
	CC="$@"
      fi
    fi

    if test -n "$CC"; then
      echo "$ac_t$CC" 1>&6
    else
      echo "$ac_t"no 1>&6
    fi

    if test -z "$CC"; then
      echo "$progname: error: no acceptable cc found in \$PATH" 1>&2
      exit 1
    fi
  fi

  # Now see if the compiler is really GCC.
  with_gcc=no
  echo $ac_n "checking whether we are using GNU C... $ac_c" 1>&6
  echo "$progname:581: checking whether we are using GNU C" >&5

  $rm conftest.c
  cat > conftest.c <<EOF
#ifdef __GNUC__
  yes;
#endif
EOF
  if { ac_try='${CC-cc} -E conftest.c'; { (eval echo $progname:589: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }; } | egrep yes >/dev/null 2>&1; then
    with_gcc=yes
  fi
  $rm conftest.c
  echo "$ac_t$with_gcc" 1>&6
fi

# Allow CC to be a program name with arguments.
set dummy $CC
compiler="$2"

echo $ac_n "checking for object suffix... $ac_c" 1>&6
$rm conftest*
echo 'int i = 1;' > conftest.c
echo "$progname:603: checking for object suffix" >& 5
if { (eval echo $progname:604: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>conftest.err; }; then
  # Append any warnings to the config.log.
  cat conftest.err 1>&5

  for ac_file in conftest.*; do
    case $ac_file in
    *.c) ;;
    *) objext=`echo $ac_file | sed -e s/conftest.//` ;;
    esac
  done
else
  cat conftest.err 1>&5
  echo "$progname: failed program was:" >&5
  cat conftest.c >&5
fi
$rm conftest*
echo "$ac_t$objext" 1>&6

echo $ac_n "checking for executable suffix... $ac_c" 1>&6
if eval "test \"`echo '$''{'ac_cv_exeext'+set}'`\" = set"; then
  echo $ac_n "(cached) $ac_c" 1>&6
else
  ac_cv_exeext="no"
  $rm conftest*
  echo 'main () { return 0; }' > conftest.c
  echo "$progname:629: checking for executable suffix" >& 5
  if { (eval echo $progname:630: \"$ac_link\") 1>&5; (eval $ac_link) 2>conftest.err; }; then
    # Append any warnings to the config.log.
    cat conftest.err 1>&5

    for ac_file in conftest.*; do
      case $ac_file in
      *.c | *.err | *.$objext ) ;;
      *) ac_cv_exeext=.`echo $ac_file | sed -e s/conftest.//` ;;
      esac
    done
  else
    cat conftest.err 1>&5
    echo "$progname: failed program was:" >&5
    cat conftest.c >&5
  fi
  $rm conftest*
fi
if test "X$ac_cv_exeext" = Xno; then
  exeext=""
else
  exeext="$ac_cv_exeext"
fi
echo "$ac_t$ac_cv_exeext" 1>&6

echo $ac_n "checking for $compiler option to produce PIC... $ac_c" 1>&6
pic_flag=
special_shlib_compile_flags=
wl=
link_static_flag=
no_builtin_flag=

if test "$with_gcc" = yes; then
  wl='-Wl,'
  link_static_flag='-static'

  case "$host_os" in
  beos* | irix5* | irix6* | osf3* | osf4* | osf5*)
    # PIC is the default for these OSes.
    ;;
  aix*)
    # Below there is a dirty hack to force normal static linking with -ldl
    # The problem is because libdl dynamically linked with both libc and
    # libC (AIX C++ library), which obviously doesn't included in libraries
    # list by gcc. This cause undefined symbols with -static flags.
    # This hack allows C programs to be linked with "-static -ldl", but
    # we not sure about C++ programs.
    link_static_flag="$link_static_flag ${wl}-lC"
    ;;
  cygwin* | mingw* | os2*)
    # We can build DLLs from non-PIC.
    ;;
  amigaos*)
    # FIXME: we need at least 68020 code to build shared libraries, but
    # adding the `-m68020' flag to GCC prevents building anything better,
    # like `-m68040'.
    pic_flag='-m68020 -resident32 -malways-restore-a4'
    ;;
  sysv4*MP*)
    if test -d /usr/nec; then
       pic_flag=-Kconform_pic
    fi
    ;;
  *)
    pic_flag='-fPIC'
    ;;
  esac
else
  # PORTME Check for PIC flags for the system compiler.
  case "$host_os" in
  aix3* | aix4*)
    # All AIX code is PIC.
    link_static_flag='-bnso -bI:/lib/syscalls.exp'
    ;;

  hpux9* | hpux10* | hpux11*)
    # Is there a better link_static_flag that works with the bundled CC?
    wl='-Wl,'
    link_static_flag="${wl}-a ${wl}archive"
    pic_flag='+Z'
    ;;

  irix5* | irix6*)
    wl='-Wl,'
    link_static_flag='-non_shared'
    # PIC (with -KPIC) is the default.
    ;;

  cygwin* | mingw* | os2*)
    # We can build DLLs from non-PIC.
    ;;

  osf3* | osf4* | osf5*)
    # All OSF/1 code is PIC.
    wl='-Wl,'
    link_static_flag='-non_shared'
    ;;

  sco3.2v5*)
    pic_flag='-Kpic'
    link_static_flag='-dn'
    special_shlib_compile_flags='-belf'
    ;;

  solaris*)
    pic_flag='-KPIC'
    link_static_flag='-Bstatic'
    wl='-Wl,'
    ;;

  sunos4*)
    pic_flag='-PIC'
    link_static_flag='-Bstatic'
    wl='-Qoption ld '
    ;;

  sysv4 | sysv4.2uw2* | sysv4.3* | sysv5*)
    pic_flag='-KPIC'
    link_static_flag='-Bstatic'
    wl='-Wl,'
    ;;

  uts4*)
    pic_flag='-pic'
    link_static_flag='-Bstatic'
    ;;
  sysv4*MP*)
    if test -d /usr/nec ;then
      pic_flag='-Kconform_pic'
      link_static_flag='-Bstatic'
    fi
    ;;
  *)
    can_build_shared=no
    ;;
  esac
fi

if test -n "$pic_flag"; then
  echo "$ac_t$pic_flag" 1>&6

  # Check to make sure the pic_flag actually works.
  echo $ac_n "checking if $compiler PIC flag $pic_flag works... $ac_c" 1>&6
  $rm conftest*
  echo "int some_variable = 0;" > conftest.c
  save_CFLAGS="$CFLAGS"
  CFLAGS="$CFLAGS $pic_flag -DPIC"
  echo "$progname:776: checking if $compiler PIC flag $pic_flag works" >&5
  if { (eval echo $progname:777: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>conftest.err; } && test -s conftest.$objext; then
    # Append any warnings to the config.log.
    cat conftest.err 1>&5
    
    case "$host_os" in
    hpux9* | hpux10* | hpux11*)
      # On HP-UX, both CC and GCC only warn that PIC is supported... then they
      # create non-PIC objects.  So, if there were any warnings, we assume that
      # PIC is not supported.
      if test -s conftest.err; then
	echo "$ac_t"no 1>&6
	can_build_shared=no
	pic_flag=
      else
	echo "$ac_t"yes 1>&6
	pic_flag=" $pic_flag"
      fi
      ;;
    *)
      echo "$ac_t"yes 1>&6
      pic_flag=" $pic_flag"
      ;;
    esac
  else
    # Append any errors to the config.log.
    cat conftest.err 1>&5
    can_build_shared=no
    pic_flag=
    echo "$ac_t"no 1>&6
  fi
  CFLAGS="$save_CFLAGS"
  $rm conftest*
else
  echo "$ac_t"none 1>&6
fi

# Check to see if options -o and -c are simultaneously supported by compiler
echo $ac_n "checking if $compiler supports -c -o file.o... $ac_c" 1>&6
$rm -r conftest 2>/dev/null
mkdir conftest
cd conftest
$rm conftest*
echo "int some_variable = 0;" > conftest.c
mkdir out
# According to Tom Tromey, Ian Lance Taylor reported there are C compilers
# that will create temporary files in the current directory regardless of
# the output directory.  Thus, making CWD read-only will cause this test
# to fail, enabling locking or at least warning the user not to do parallel
# builds.
chmod -w .
save_CFLAGS="$CFLAGS"
CFLAGS="$CFLAGS -o out/conftest2.o"
echo "$progname:829: checking if $compiler supports -c -o file.o" >&5
if { (eval echo $progname:830: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>out/conftest.err; } && test -s out/conftest2.o; then

  # The compiler can only warn and ignore the option if not recognized
  # So say no if there are warnings
    if test -s out/conftest.err; then
      echo "$ac_t"no 1>&6
      compiler_c_o=no
    else
      echo "$ac_t"yes 1>&6
      compiler_c_o=yes
    fi
else
  # Append any errors to the config.log.
  cat out/conftest.err 1>&5
  compiler_c_o=no
  echo "$ac_t"no 1>&6
fi
CFLAGS="$save_CFLAGS"
chmod u+w .
$rm conftest* out/*
rmdir out
cd ..
rmdir conftest
$rm -r conftest 2>/dev/null

if test x"$compiler_c_o" = x"yes"; then
  # Check to see if we can write to a .lo
  echo $ac_n "checking if $compiler supports -c -o file.lo... $ac_c" 1>&6
  $rm conftest*
  echo "int some_variable = 0;" > conftest.c
  save_CFLAGS="$CFLAGS"
  CFLAGS="$CFLAGS -c -o conftest.lo"
  echo "$progname:862: checking if $compiler supports -c -o file.lo" >&5
if { (eval echo $progname:863: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>conftest.err; } && test -s conftest.lo; then

    # The compiler can only warn and ignore the option if not recognized
    # So say no if there are warnings
      if test -s conftest.err; then
	echo "$ac_t"no 1>&6
	compiler_o_lo=no
      else
	echo "$ac_t"yes 1>&6
	compiler_o_lo=yes
      fi
  else
    # Append any errors to the config.log.
    cat conftest.err 1>&5
    compiler_o_lo=no
    echo "$ac_t"no 1>&6
  fi
  CFLAGS="$save_CFLAGS"
  $rm conftest*
else
  compiler_o_lo=no
fi

# Check to see if we can do hard links to lock some files if needed
hard_links="nottested"
if test "$compiler_c_o" = no && test "$need_locks" != no; then
  # do not overwrite the value of need_locks provided by the user
  echo $ac_n "checking if we can lock with hard links... $ac_c" 1>&6
  hard_links=yes
  $rm conftest*
  ln conftest.a conftest.b 2>/dev/null && hard_links=no
  touch conftest.a
  ln conftest.a conftest.b 2>&5 || hard_links=no
  ln conftest.a conftest.b 2>/dev/null && hard_links=no
  echo "$ac_t$hard_links" 1>&6
  $rm conftest*
  if test "$hard_links" = no; then
    echo "*** WARNING: \`$CC' does not support \`-c -o', so \`make -j' may be unsafe" >&2
    need_locks=warn
  fi
else
  need_locks=no
fi

if test "$with_gcc" = yes; then
  # Check to see if options -fno-rtti -fno-exceptions are supported by compiler
  echo $ac_n "checking if $compiler supports -fno-rtti -fno-exceptions ... $ac_c" 1>&6
  $rm conftest*
  echo "int some_variable = 0;" > conftest.c
  save_CFLAGS="$CFLAGS"
  CFLAGS="$CFLAGS -fno-rtti -fno-exceptions -c conftest.c"
  echo "$progname:914: checking if $compiler supports -fno-rtti -fno-exceptions" >&5
  if { (eval echo $progname:915: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>conftest.err; } && test -s conftest.o; then

    # The compiler can only warn and ignore the option if not recognized
    # So say no if there are warnings
      if test -s conftest.err; then
	echo "$ac_t"no 1>&6
	compiler_rtti_exceptions=no
      else
	echo "$ac_t"yes 1>&6
	compiler_rtti_exceptions=yes
      fi
  else
    # Append any errors to the config.log.
    cat conftest.err 1>&5
    compiler_rtti_exceptions=no
    echo "$ac_t"no 1>&6
  fi
  CFLAGS="$save_CFLAGS"
  $rm conftest*

  if test "$compiler_rtti_exceptions" = "yes"; then
    no_builtin_flag=' -fno-builtin -fno-rtti -fno-exceptions'
  else
    no_builtin_flag=' -fno-builtin'
  fi
  
fi

# Check for any special shared library compilation flags.
if test -n "$special_shlib_compile_flags"; then
  echo "$progname: warning: \`$CC' requires \`$special_shlib_compile_flags' to build shared libraries" 1>&2
  if echo "$old_CC $old_CFLAGS " | egrep -e "[ 	]$special_shlib_compile_flags[ 	]" >/dev/null; then :
  else
    echo "$progname: add \`$special_shlib_compile_flags' to the CC or CFLAGS env variable and reconfigure" 1>&2
    can_build_shared=no
  fi
fi

echo $ac_n "checking if $compiler static flag $link_static_flag works... $ac_c" 1>&6
$rm conftest*
echo 'main(){return(0);}' > conftest.c
save_LDFLAGS="$LDFLAGS"
LDFLAGS="$LDFLAGS $link_static_flag"
echo "$progname:958: checking if $compiler static flag $link_static_flag works" >&5
if { (eval echo $progname:959: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest; then
  echo "$ac_t$link_static_flag" 1>&6
else
  echo "$ac_t"none 1>&6
  link_static_flag=
fi
LDFLAGS="$save_LDFLAGS"
$rm conftest*

if test -z "$LN_S"; then
  # Check to see if we can use ln -s, or we need hard links.
  echo $ac_n "checking whether ln -s works... $ac_c" 1>&6
  $rm conftest.dat
  if ln -s X conftest.dat 2>/dev/null; then
    $rm conftest.dat
    LN_S="ln -sf"
  else
    LN_S=ln
  fi
  if test "$LN_S" = "ln -sf"; then
    echo "$ac_t"yes 1>&6
  else
    echo "$ac_t"no 1>&6
  fi
fi

# Make sure LD is an absolute path.
if test -z "$LD"; then