Subversion Repositories openrisc_2011-10-31

# lib-ld.m4 serial 2 (gettext-0.12)

dnl Copyright (C) 1996-2003 Free Software Foundation, Inc.

dnl This file is free software, distributed under the terms of the GNU

dnl General Public License.  As a special exception to the GNU General

dnl Public License, this file may be distributed as part of a program

dnl that contains a configuration script generated by Autoconf, under

dnl the same distribution terms as the rest of that program.

dnl Subroutines of libtool.m4,

dnl with replacements s/AC_/AC_LIB/ and s/lt_cv/acl_cv/ to avoid collision

dnl with libtool.m4.

dnl From libtool-1.4. Sets the variable with_gnu_ld to yes or no.

AC_DEFUN([AC_LIB_PROG_LD_GNU],

[AC_CACHE_CHECK([if the linker ($LD) is GNU ld], acl_cv_prog_gnu_ld,

[# I'd rather use --version here, but apparently some GNU ld's only accept -v.

if $LD -v 2>&1 </dev/null | egrep '(GNU|with BFD)' 1>&5; then

  acl_cv_prog_gnu_ld=yes

else

  acl_cv_prog_gnu_ld=no

fi])

with_gnu_ld=$acl_cv_prog_gnu_ld

])

dnl From libtool-1.4. Sets the variable LD.

AC_DEFUN([AC_LIB_PROG_LD],

[AC_ARG_WITH(gnu-ld,

[  --with-gnu-ld           assume the C compiler uses GNU ld [default=no]],

test "$withval" = no || with_gnu_ld=yes, with_gnu_ld=no)

AC_REQUIRE([AC_PROG_CC])dnl

AC_REQUIRE([AC_CANONICAL_HOST])dnl

# Prepare PATH_SEPARATOR.

# The user is always right.

if test "${PATH_SEPARATOR+set}" != set; then

  echo "#! /bin/sh" >conf$$.sh

  echo  "exit 0"   >>conf$$.sh

  chmod +x conf$$.sh

  if (PATH="/nonexistent;."; conf$$.sh) >/dev/null 2>&1; then

    PATH_SEPARATOR=';'

  else

    PATH_SEPARATOR=:

  fi

  rm -f conf$$.sh

fi

ac_prog=ld

if test "$GCC" = yes; then

  # Check if gcc -print-prog-name=ld gives a path.

  AC_MSG_CHECKING([for ld used by GCC])

  case $host in

  *-*-mingw*)

    # gcc leaves a trailing carriage return which upsets mingw

    ac_prog=`($CC -print-prog-name=ld) 2>&5 | tr -d '\015'` ;;

  *)

    ac_prog=`($CC -print-prog-name=ld) 2>&5` ;;

  esac

  case $ac_prog in

    # Accept absolute paths.

    [[\\/]* | [A-Za-z]:[\\/]*)]

      [re_direlt='/[^/][^/]*/\.\./']

      # Canonicalize the path of ld

      ac_prog=`echo $ac_prog| sed 's%\\\\%/%g'`

      while echo $ac_prog | grep "$re_direlt" > /dev/null 2>&1; do

        ac_prog=`echo $ac_prog| sed "s%$re_direlt%/%"`

      done

      test -z "$LD" && LD="$ac_prog"

      ;;

  "")

    # If it fails, then pretend we aren't using GCC.

    ac_prog=ld

    ;;

  *)

    # If it is relative, then search for the first ld in PATH.

    with_gnu_ld=unknown

    ;;

  esac

elif test "$with_gnu_ld" = yes; then

  AC_MSG_CHECKING([for GNU ld])

else

  AC_MSG_CHECKING([for non-GNU ld])

fi

AC_CACHE_VAL(acl_cv_path_LD,

[if test -z "$LD"; then

  IFS="${IFS=   }"; ac_save_ifs="$IFS"; IFS="${IFS}${PATH_SEPARATOR-:}"

  for ac_dir in $PATH; do

    test -z "$ac_dir" && ac_dir=.

    if test -f "$ac_dir/$ac_prog" || test -f "$ac_dir/$ac_prog$ac_exeext"; then

      acl_cv_path_LD="$ac_dir/$ac_prog"

      # Check to see if the program is GNU ld.  I'd rather use --version,

      # but apparently some GNU ld's only accept -v.

      # Break only if it was the GNU/non-GNU ld that we prefer.

      if "$acl_cv_path_LD" -v 2>&1 < /dev/null | egrep '(GNU|with BFD)' > /dev/null; then

        test "$with_gnu_ld" != no && break

      else

        test "$with_gnu_ld" != yes && break

      fi

    fi

  done

  IFS="$ac_save_ifs"

else

  acl_cv_path_LD="$LD" # Let the user override the test with a path.

fi])

LD="$acl_cv_path_LD"

if test -n "$LD"; then

  AC_MSG_RESULT($LD)

else

  AC_MSG_RESULT(no)

fi

test -z "$LD" && AC_MSG_ERROR([no acceptable ld found in \$PATH])

AC_LIB_PROG_LD_GNU

])