$NetBSD$

Support Darwin/aarch64, from https://github.com/Homebrew/formula-patches.

--- gcc/exec-tool.in
+++ gcc/exec-tool.in
@@ -23,6 +23,8 @@ ORIGINAL_AS_FOR_TARGET="@ORIGINAL_AS_FOR_TARGET@"
 ORIGINAL_LD_FOR_TARGET="@ORIGINAL_LD_FOR_TARGET@"
 ORIGINAL_LD_BFD_FOR_TARGET="@ORIGINAL_LD_BFD_FOR_TARGET@"
 ORIGINAL_LD_GOLD_FOR_TARGET="@ORIGINAL_LD_GOLD_FOR_TARGET@"
+ORIGINAL_LLD_FOR_TARGET="@ORIGINAL_LLD_FOR_TARGET@"
+ORIGINAL_CLASSIC_LD_FOR_TARGET="@ORIGINAL_CLASSIC_LD_FOR_TARGET@"
 ORIGINAL_PLUGIN_LD_FOR_TARGET="@ORIGINAL_PLUGIN_LD_FOR_TARGET@"
 ORIGINAL_NM_FOR_TARGET="@ORIGINAL_NM_FOR_TARGET@"
 ORIGINAL_DSYMUTIL_FOR_TARGET="@ORIGINAL_DSYMUTIL_FOR_TARGET@"
@@ -39,24 +41,41 @@ case "$invoked" in
     dir=gas
     ;;
   collect-ld)
-    # Check -fuse-ld=bfd and -fuse-ld=gold
-    case " $* " in
-      *\ -fuse-ld=bfd\ *)
-	original=$ORIGINAL_LD_BFD_FOR_TARGET
-	;;
-      *\ -fuse-ld=gold\ *)
-	original=$ORIGINAL_LD_GOLD_FOR_TARGET
-	;;
-      *)
-	# 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
-	;;
-    esac
+    # 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
+    # Check -fuse-ld=bfd, -fuse-ld=gold and -fuse-ld=classic
+    # Remove -fuse-ld=classic from the command line
+    for arg do
+        # temporarily, remove the arg.
+        shift
+        case $arg in
+          -fuse-ld=bfd)
+            original=$ORIGINAL_LD_BFD_FOR_TARGET
+            ;;
+          -fuse-ld=gold)
+            original=$ORIGINAL_LD_GOLD_FOR_TARGET
+            ;;
+          -fuse-ld=lld)
+            original=$ORIGINAL_LLD_FOR_TARGET
+            # We want to remove this from the command line; by the slightly
+            # obtuse mechanism of not putting it back.
+            continue
+            ;;
+          -fuse-ld=classic)
+            original=$ORIGINAL_CLASSIC_LD_FOR_TARGET
+            # As for lld.
+            continue
+            ;;
+          *) ;;
+        esac
+        # if we want to keep the arg, put it back.
+        set -- "$@" "$arg"
+    done
     prog=ld-new$exeext
     if test "$original" = ../gold/ld-new$exeext; then
       dir=gold