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Annotation of embedaddon/libiconv/srcm4/lib-ld.m4, revision 1.1

1.1     ! misho       1: # lib-ld.m4 serial 4 (gettext-0.18)
        !             2: dnl Copyright (C) 1996-2003, 2009 Free Software Foundation, Inc.
        !             3: dnl This file is free software; the Free Software Foundation
        !             4: dnl gives unlimited permission to copy and/or distribute it,
        !             5: dnl with or without modifications, as long as this notice is preserved.
        !             6: 
        !             7: dnl Subroutines of libtool.m4,
        !             8: dnl with replacements s/AC_/AC_LIB/ and s/lt_cv/acl_cv/ to avoid collision
        !             9: dnl with libtool.m4.
        !            10: 
        !            11: dnl From libtool-1.4. Sets the variable with_gnu_ld to yes or no.
        !            12: AC_DEFUN([AC_LIB_PROG_LD_GNU],
        !            13: [AC_CACHE_CHECK([if the linker ($LD) is GNU ld], [acl_cv_prog_gnu_ld],
        !            14: [# I'd rather use --version here, but apparently some GNU ld's only accept -v.
        !            15: case `$LD -v 2>&1 </dev/null` in
        !            16: *GNU* | *'with BFD'*)
        !            17:   acl_cv_prog_gnu_ld=yes ;;
        !            18: *)
        !            19:   acl_cv_prog_gnu_ld=no ;;
        !            20: esac])
        !            21: with_gnu_ld=$acl_cv_prog_gnu_ld
        !            22: ])
        !            23: 
        !            24: dnl From libtool-1.4. Sets the variable LD.
        !            25: AC_DEFUN([AC_LIB_PROG_LD],
        !            26: [AC_ARG_WITH([gnu-ld],
        !            27: [  --with-gnu-ld           assume the C compiler uses GNU ld [default=no]],
        !            28: test "$withval" = no || with_gnu_ld=yes, with_gnu_ld=no)
        !            29: AC_REQUIRE([AC_PROG_CC])dnl
        !            30: AC_REQUIRE([AC_CANONICAL_HOST])dnl
        !            31: # Prepare PATH_SEPARATOR.
        !            32: # The user is always right.
        !            33: if test "${PATH_SEPARATOR+set}" != set; then
        !            34:   echo "#! /bin/sh" >conf$$.sh
        !            35:   echo  "exit 0"   >>conf$$.sh
        !            36:   chmod +x conf$$.sh
        !            37:   if (PATH="/nonexistent;."; conf$$.sh) >/dev/null 2>&1; then
        !            38:     PATH_SEPARATOR=';'
        !            39:   else
        !            40:     PATH_SEPARATOR=:
        !            41:   fi
        !            42:   rm -f conf$$.sh
        !            43: fi
        !            44: ac_prog=ld
        !            45: if test "$GCC" = yes; then
        !            46:   # Check if gcc -print-prog-name=ld gives a path.
        !            47:   AC_MSG_CHECKING([for ld used by GCC])
        !            48:   case $host in
        !            49:   *-*-mingw*)
        !            50:     # gcc leaves a trailing carriage return which upsets mingw
        !            51:     ac_prog=`($CC -print-prog-name=ld) 2>&5 | tr -d '\015'` ;;
        !            52:   *)
        !            53:     ac_prog=`($CC -print-prog-name=ld) 2>&5` ;;
        !            54:   esac
        !            55:   case $ac_prog in
        !            56:     # Accept absolute paths.
        !            57:     [[\\/]* | [A-Za-z]:[\\/]*)]
        !            58:       [re_direlt='/[^/][^/]*/\.\./']
        !            59:       # Canonicalize the path of ld
        !            60:       ac_prog=`echo $ac_prog| sed 's%\\\\%/%g'`
        !            61:       while echo $ac_prog | grep "$re_direlt" > /dev/null 2>&1; do
        !            62:        ac_prog=`echo $ac_prog| sed "s%$re_direlt%/%"`
        !            63:       done
        !            64:       test -z "$LD" && LD="$ac_prog"
        !            65:       ;;
        !            66:   "")
        !            67:     # If it fails, then pretend we aren't using GCC.
        !            68:     ac_prog=ld
        !            69:     ;;
        !            70:   *)
        !            71:     # If it is relative, then search for the first ld in PATH.
        !            72:     with_gnu_ld=unknown
        !            73:     ;;
        !            74:   esac
        !            75: elif test "$with_gnu_ld" = yes; then
        !            76:   AC_MSG_CHECKING([for GNU ld])
        !            77: else
        !            78:   AC_MSG_CHECKING([for non-GNU ld])
        !            79: fi
        !            80: AC_CACHE_VAL([acl_cv_path_LD],
        !            81: [if test -z "$LD"; then
        !            82:   IFS="${IFS=  }"; ac_save_ifs="$IFS"; IFS="${IFS}${PATH_SEPARATOR-:}"
        !            83:   for ac_dir in $PATH; do
        !            84:     test -z "$ac_dir" && ac_dir=.
        !            85:     if test -f "$ac_dir/$ac_prog" || test -f "$ac_dir/$ac_prog$ac_exeext"; then
        !            86:       acl_cv_path_LD="$ac_dir/$ac_prog"
        !            87:       # Check to see if the program is GNU ld.  I'd rather use --version,
        !            88:       # but apparently some GNU ld's only accept -v.
        !            89:       # Break only if it was the GNU/non-GNU ld that we prefer.
        !            90:       case `"$acl_cv_path_LD" -v 2>&1 < /dev/null` in
        !            91:       *GNU* | *'with BFD'*)
        !            92:        test "$with_gnu_ld" != no && break ;;
        !            93:       *)
        !            94:        test "$with_gnu_ld" != yes && break ;;
        !            95:       esac
        !            96:     fi
        !            97:   done
        !            98:   IFS="$ac_save_ifs"
        !            99: else
        !           100:   acl_cv_path_LD="$LD" # Let the user override the test with a path.
        !           101: fi])
        !           102: LD="$acl_cv_path_LD"
        !           103: if test -n "$LD"; then
        !           104:   AC_MSG_RESULT([$LD])
        !           105: else
        !           106:   AC_MSG_RESULT([no])
        !           107: fi
        !           108: test -z "$LD" && AC_MSG_ERROR([no acceptable ld found in \$PATH])
        !           109: AC_LIB_PROG_LD_GNU
        !           110: ])