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Annotation of embedaddon/libiconv/srcm4/lib-ld.m4, revision 1.1.1.1

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: ])