1 files changed, 88 insertions, 28 deletions

diff --git a/gcc-4.7/gcc/exec-tool.in b/gcc-4.7/gcc/exec-tool.in
index 8a1077573..f19a251e8 100644
--- a/gcc-4.7/gcc/exec-tool.in
+++ b/gcc-4.7/gcc/exec-tool.in
@@ -21,11 +21,13 @@
 
 ORIGINAL_AS_FOR_TARGET="@ORIGINAL_AS_FOR_TARGET@"
 ORIGINAL_LD_FOR_TARGET="@ORIGINAL_LD_FOR_TARGET@"
+ORIGINAL_GOLD_FOR_TARGET="@ORIGINAL_GOLD_FOR_TARGET@"
 ORIGINAL_PLUGIN_LD_FOR_TARGET="@ORIGINAL_PLUGIN_LD_FOR_TARGET@"
 ORIGINAL_NM_FOR_TARGET="@ORIGINAL_NM_FOR_TARGET@"
 exeext=@host_exeext@
 fast_install=@enable_fast_install@
 objdir=@objdir@
+version="1.1"
 
 invoked=`basename "$0"`
 id=$invoked
@@ -36,15 +38,44 @@ case "$invoked" in
     dir=gas
     ;;
   collect-ld)
-    # when using a linker plugin, gcc will always pass '-plugin' as the
-    # first or second option to the linker.
-    if test x"$1" = "x-plugin" || test x"$2" = "x-plugin"; then
-      original=$ORIGINAL_PLUGIN_LD_FOR_TARGET
-    else
-      original=$ORIGINAL_LD_FOR_TARGET
-    fi
     prog=ld-new$exeext
-    dir=ld
+    # Look for the a command line option
+    # specifying the linker to be used.
+    case " $* " in
+      *\ -use-gold\ *)
+        original=$ORIGINAL_GOLD_FOR_TARGET
+	dir=gold
+        ;;
+      *\ -use-ld\ * | *\ -use-ld.bfd\ *)
+        original=$ORIGINAL_LD_FOR_TARGET
+        dir=ld
+        ;;
+      *\ -plugin\ *)
+        original=$ORIGINAL_PLUGIN_LD_FOR_TARGET
+        dir=ld
+	;;
+      *)
+        original=$ORIGINAL_LD_FOR_TARGET
+        dir=ld
+	;;
+    esac
+
+    # If the selected linker has not been configured then
+    # try using the others, in the order PLUGIN-LD, LD, GOLD.
+    if test x"$original" = x; then
+      if test x"$ORIGINAL_PLUGIN_LD_FOR_TARGET" != x; then
+        original=$ORIGINAL_PLUGIN_LD_FOR_TARGET
+        dir=ld
+      elif test x"$ORIGINAL_LD_FOR_TARGET" != x; then
+        original=$ORIGINAL_LD_FOR_TARGET
+        dir=ld
+      elif test x"$ORIGINAL_GOLD_FOR_TARGET" != x; then
+        original=$ORIGINAL_GOLD_FOR_TARGET
+        dir=gold
+      # Otherwise do nothing - the case statement below
+      # will issue an error message for us.
+      fi
+    fi
     id=ld
     ;;
   nm)
@@ -61,29 +92,58 @@ case "$original" in
     scriptdir=`cd "$tdir" && pwd`
 
     if test -x $scriptdir/../$dir/$prog; then
-      test "$fast_install" = yes || exec $scriptdir/../$dir/$prog ${1+"$@"}
-
-      # if libtool did everything it needs to do, there's a fast path
-      lt_prog=$scriptdir/../$dir/$objdir/lt-$prog 
-      test -x $lt_prog && exec $lt_prog ${1+"$@"}
-
-      # libtool has not relinked ld-new yet, but we cannot just use the
-      # previous stage (because then the relinking would just never happen!).
-      # So we take extra care to use prev-ld/ld-new *on recursive calls*.
-      eval LT_RCU="\${LT_RCU_$id}"
-      test x"$LT_RCU" = x"1" && exec $scriptdir/../prev-$dir/$prog ${1+"$@"}
-
-      eval LT_RCU_$id=1
-      export LT_RCU_$id
-      $scriptdir/../$dir/$prog ${1+"$@"}
-      result=$?
-      exit $result
+      if test "$fast_install" = yes; then
+        # If libtool did everything it needs to do, there's a fast path.
+        lt_prog=$scriptdir/../$dir/$objdir/lt-$prog 
 
+	if test -x $lt_prog; then
+	  original=$lt_prog
+        else
+          # Libtool has not relinked ld-new yet, but we cannot just use the
+          # previous stage (because then the relinking would just never happen!).
+          # So we take extra care to use prev-ld/ld-new *on recursive calls*.
+          eval LT_RCU="\${LT_RCU_$id}"
+          if test x"$LT_RCU" = x"1"; then
+	    original=$scriptdir/../prev-$dir/$prog
+          else
+            eval LT_RCU_$id=1
+            export LT_RCU_$id
+            case " $* " in
+              *\ -v\ *)
+               echo "$invoked $version"
+               echo $scriptdir/../$dir/$prog $*
+               ;;
+            esac
+            $scriptdir/../$dir/$prog ${1+"$@"}
+            result=$?
+            exit $result
+          fi
+        fi
+      else
+	original=$scriptdir/../$dir/$prog
+      fi
     else
-      exec $scriptdir/../prev-$dir/$prog ${1+"$@"}
+      original=$scriptdir/../prev-$dir/$prog
     fi
     ;;
-  *)
-    exec $original ${1+"$@"}
+  "")
+    echo "$invoked: executable not configured"
+    exit 1
     ;;
 esac
+
+# If -v has been used then display our version number
+# and then echo the command we are about to invoke.
+case " $* " in
+  *\ -v\ *)
+    echo "$invoked $version"
+    echo $original $*
+    ;;
+esac
+
+if test -x $original; then
+  exec "$original" ${1+"$@"}
+else
+  echo "$invoked: unable to locate executable: $original"
+  exit 1
+fi