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     5         kx # lib-ld.m4 serial 6
     5         kx dnl Copyright (C) 1996-2003, 2009-2016 Free Software Foundation, Inc.
     5         kx dnl This file is free software; the Free Software Foundation
     5         kx dnl gives unlimited permission to copy and/or distribute it,
     5         kx dnl with or without modifications, as long as this notice is preserved.
     5         kx 
     5         kx dnl Subroutines of libtool.m4,
     5         kx dnl with replacements s/_*LT_PATH/AC_LIB_PROG/ and s/lt_/acl_/ to avoid
     5         kx dnl collision with libtool.m4.
     5         kx 
     5         kx dnl From libtool-2.4. Sets the variable with_gnu_ld to yes or no.
     5         kx AC_DEFUN([AC_LIB_PROG_LD_GNU],
     5         kx [AC_CACHE_CHECK([if the linker ($LD) is GNU ld], [acl_cv_prog_gnu_ld],
     5         kx [# I'd rather use --version here, but apparently some GNU lds only accept -v.
     5         kx case `$LD -v 2>&1 </dev/null` in
     5         kx *GNU* | *'with BFD'*)
     5         kx   acl_cv_prog_gnu_ld=yes
     5         kx   ;;
     5         kx *)
     5         kx   acl_cv_prog_gnu_ld=no
     5         kx   ;;
     5         kx esac])
     5         kx with_gnu_ld=$acl_cv_prog_gnu_ld
     5         kx ])
     5         kx 
     5         kx dnl From libtool-2.4. Sets the variable LD.
     5         kx AC_DEFUN([AC_LIB_PROG_LD],
     5         kx [AC_REQUIRE([AC_PROG_CC])dnl
     5         kx AC_REQUIRE([AC_CANONICAL_HOST])dnl
     5         kx 
     5         kx AC_ARG_WITH([gnu-ld],
     5         kx     [AS_HELP_STRING([--with-gnu-ld],
     5         kx         [assume the C compiler uses GNU ld [default=no]])],
     5         kx     [test "$withval" = no || with_gnu_ld=yes],
     5         kx     [with_gnu_ld=no])dnl
     5         kx 
     5         kx # Prepare PATH_SEPARATOR.
     5         kx # The user is always right.
     5         kx if test "${PATH_SEPARATOR+set}" != set; then
     5         kx   # Determine PATH_SEPARATOR by trying to find /bin/sh in a PATH which
     5         kx   # contains only /bin. Note that ksh looks also at the FPATH variable,
     5         kx   # so we have to set that as well for the test.
     5         kx   PATH_SEPARATOR=:
     5         kx   (PATH='/bin;/bin'; FPATH=$PATH; sh -c :) >/dev/null 2>&1 \
     5         kx     && { (PATH='/bin:/bin'; FPATH=$PATH; sh -c :) >/dev/null 2>&1 \
     5         kx            || PATH_SEPARATOR=';'
     5         kx        }
     5         kx fi
     5         kx 
     5         kx ac_prog=ld
     5         kx if test "$GCC" = yes; then
     5         kx   # Check if gcc -print-prog-name=ld gives a path.
     5         kx   AC_MSG_CHECKING([for ld used by $CC])
     5         kx   case $host in
     5         kx   *-*-mingw*)
     5         kx     # gcc leaves a trailing carriage return which upsets mingw
     5         kx     ac_prog=`($CC -print-prog-name=ld) 2>&5 | tr -d '\015'` ;;
     5         kx   *)
     5         kx     ac_prog=`($CC -print-prog-name=ld) 2>&5` ;;
     5         kx   esac
     5         kx   case $ac_prog in
     5         kx     # Accept absolute paths.
     5         kx     [[\\/]]* | ?:[[\\/]]*)
     5         kx       re_direlt='/[[^/]][[^/]]*/\.\./'
     5         kx       # Canonicalize the pathname of ld
     5         kx       ac_prog=`echo "$ac_prog"| sed 's%\\\\%/%g'`
     5         kx       while echo "$ac_prog" | grep "$re_direlt" > /dev/null 2>&1; do
     5         kx         ac_prog=`echo $ac_prog| sed "s%$re_direlt%/%"`
     5         kx       done
     5         kx       test -z "$LD" && LD="$ac_prog"
     5         kx       ;;
     5         kx   "")
     5         kx     # If it fails, then pretend we aren't using GCC.
     5         kx     ac_prog=ld
     5         kx     ;;
     5         kx   *)
     5         kx     # If it is relative, then search for the first ld in PATH.
     5         kx     with_gnu_ld=unknown
     5         kx     ;;
     5         kx   esac
     5         kx elif test "$with_gnu_ld" = yes; then
     5         kx   AC_MSG_CHECKING([for GNU ld])
     5         kx else
     5         kx   AC_MSG_CHECKING([for non-GNU ld])
     5         kx fi
     5         kx AC_CACHE_VAL([acl_cv_path_LD],
     5         kx [if test -z "$LD"; then
     5         kx   acl_save_ifs="$IFS"; IFS=$PATH_SEPARATOR
     5         kx   for ac_dir in $PATH; do
     5         kx     IFS="$acl_save_ifs"
     5         kx     test -z "$ac_dir" && ac_dir=.
     5         kx     if test -f "$ac_dir/$ac_prog" || test -f "$ac_dir/$ac_prog$ac_exeext"; then
     5         kx       acl_cv_path_LD="$ac_dir/$ac_prog"
     5         kx       # Check to see if the program is GNU ld.  I'd rather use --version,
     5         kx       # but apparently some variants of GNU ld only accept -v.
     5         kx       # Break only if it was the GNU/non-GNU ld that we prefer.
     5         kx       case `"$acl_cv_path_LD" -v 2>&1 </dev/null` in
     5         kx       *GNU* | *'with BFD'*)
     5         kx         test "$with_gnu_ld" != no && break
     5         kx         ;;
     5         kx       *)
     5         kx         test "$with_gnu_ld" != yes && break
     5         kx         ;;
     5         kx       esac
     5         kx     fi
     5         kx   done
     5         kx   IFS="$acl_save_ifs"
     5         kx else
     5         kx   acl_cv_path_LD="$LD" # Let the user override the test with a path.
     5         kx fi])
     5         kx LD="$acl_cv_path_LD"
     5         kx if test -n "$LD"; then
     5         kx   AC_MSG_RESULT([$LD])
     5         kx else
     5         kx   AC_MSG_RESULT([no])
     5         kx fi
     5         kx test -z "$LD" && AC_MSG_ERROR([no acceptable ld found in \$PATH])
     5         kx AC_LIB_PROG_LD_GNU
     5         kx ])