Backport link test fix from upstream Libtool:

* libltdl.m4 (_LT_SYS_DYNAMIC_LINKER, _LT_LINKER_SHLIBS):
	Add cache variables to tests that require the linker to work.
	For shlibpath_overrides_runpath, this also changes the semantics
	to let the result from the C compiler take precedence.
	compiler take precedence.

binutils/

	* configure: Regenerate.

opcodes/

	* configure: Regenerate.

bfd/

	* configure: Regenerate.

gas/

	* configure: Regenerate.

gprof/

	* configure: Regenerate.

ld/

	* configure: Regenerate.

libtool.m4

@@ -2454,16 +2454,21 @@ linux* | k*bsd*-gnu)
   finish_cmds='PATH="\$PATH:/sbin" ldconfig -n $libdir'
   shlibpath_var=LD_LIBRARY_PATH
   shlibpath_overrides_runpath=no
+
   # Some binutils ld are patched to set DT_RUNPATH
-  save_LDFLAGS=$LDFLAGS
+  AC_CACHE_VAL([lt_cv_shlibpath_overrides_runpath],
-  save_libdir=$libdir
+    [lt_cv_shlibpath_overrides_runpath=no
-  eval "libdir=/foo; wl=\"$_LT_TAGVAR(lt_prog_compiler_wl, $1)\"; \
+    save_LDFLAGS=$LDFLAGS
-       LDFLAGS=\"\$LDFLAGS $_LT_TAGVAR(hardcode_libdir_flag_spec, $1)\""
+    save_libdir=$libdir
-  AC_LINK_IFELSE([AC_LANG_PROGRAM([],[])],
+    eval "libdir=/foo; wl=\"$_LT_TAGVAR(lt_prog_compiler_wl, $1)\"; \
-    [AS_IF([ ($OBJDUMP -p conftest$ac_exeext) 2>/dev/null | grep "RUNPATH.*$libdir" >/dev/null],
+	 LDFLAGS=\"\$LDFLAGS $_LT_TAGVAR(hardcode_libdir_flag_spec, $1)\""
-       [shlibpath_overrides_runpath=yes])])
+    AC_LINK_IFELSE([AC_LANG_PROGRAM([],[])],
-  LDFLAGS=$save_LDFLAGS
+      [AS_IF([ ($OBJDUMP -p conftest$ac_exeext) 2>/dev/null | grep "RUNPATH.*$libdir" >/dev/null],
-  libdir=$save_libdir
+	 [lt_cv_shlibpath_overrides_runpath=yes])])
+    LDFLAGS=$save_LDFLAGS
+    libdir=$save_libdir
+    ])
+  shlibpath_overrides_runpath=$lt_cv_shlibpath_overrides_runpath
 
   # This implies no fast_install, which is unacceptable.
   # Some rework will be needed to allow for fast_install
@@ -5111,36 +5116,38 @@ x|xyes)
       # Test whether the compiler implicitly links with -lc since on some
       # systems, -lgcc has to come before -lc. If gcc already passes -lc
       # to ld, don't add -lc before -lgcc.
-      AC_MSG_CHECKING([whether -lc should be explicitly linked in])
+      AC_CACHE_CHECK([whether -lc should be explicitly linked in],
-      $RM conftest*
+	[lt_cv_]_LT_TAGVAR(archive_cmds_need_lc, $1),
-      echo "$lt_simple_compile_test_code" > conftest.$ac_ext
+	[$RM conftest*
+	echo "$lt_simple_compile_test_code" > conftest.$ac_ext
 
-      if AC_TRY_EVAL(ac_compile) 2>conftest.err; then
+	if AC_TRY_EVAL(ac_compile) 2>conftest.err; then
-        soname=conftest
+	  soname=conftest
-        lib=conftest
+	  lib=conftest
-        libobjs=conftest.$ac_objext
+	  libobjs=conftest.$ac_objext
-        deplibs=
+	  deplibs=
-        wl=$_LT_TAGVAR(lt_prog_compiler_wl, $1)
+	  wl=$_LT_TAGVAR(lt_prog_compiler_wl, $1)
-	pic_flag=$_LT_TAGVAR(lt_prog_compiler_pic, $1)
+	  pic_flag=$_LT_TAGVAR(lt_prog_compiler_pic, $1)
-        compiler_flags=-v
+	  compiler_flags=-v
-        linker_flags=-v
+	  linker_flags=-v
-        verstring=
+	  verstring=
-        output_objdir=.
+	  output_objdir=.
-        libname=conftest
+	  libname=conftest
-        lt_save_allow_undefined_flag=$_LT_TAGVAR(allow_undefined_flag, $1)
+	  lt_save_allow_undefined_flag=$_LT_TAGVAR(allow_undefined_flag, $1)
-        _LT_TAGVAR(allow_undefined_flag, $1)=
+	  _LT_TAGVAR(allow_undefined_flag, $1)=
-        if AC_TRY_EVAL(_LT_TAGVAR(archive_cmds, $1) 2\>\&1 \| $GREP \" -lc \" \>/dev/null 2\>\&1)
+	  if AC_TRY_EVAL(_LT_TAGVAR(archive_cmds, $1) 2\>\&1 \| $GREP \" -lc \" \>/dev/null 2\>\&1)
-        then
+	  then
-	  _LT_TAGVAR(archive_cmds_need_lc, $1)=no
+	    lt_cv_[]_LT_TAGVAR(archive_cmds_need_lc, $1)=no
-        else
+	  else
-	  _LT_TAGVAR(archive_cmds_need_lc, $1)=yes
+	    lt_cv_[]_LT_TAGVAR(archive_cmds_need_lc, $1)=yes
-        fi
+	  fi
-        _LT_TAGVAR(allow_undefined_flag, $1)=$lt_save_allow_undefined_flag
+	  _LT_TAGVAR(allow_undefined_flag, $1)=$lt_save_allow_undefined_flag
-      else
+	else
-        cat conftest.err 1>&5
+	  cat conftest.err 1>&5
-      fi
+	fi
-      $RM conftest*
+	$RM conftest*
-      AC_MSG_RESULT([$_LT_TAGVAR(archive_cmds_need_lc, $1)])
+	])
+      _LT_TAGVAR(archive_cmds_need_lc, $1)=$lt_cv_[]_LT_TAGVAR(archive_cmds_need_lc, $1)
       ;;
     esac
   fi