(default_compilers, ".C" and ".ii"): Pass `+e*' into cc1plus.

(process_command): Allow +e[012] to be passed down into cc1plus.

From-SVN: r2036

gcc/gcc.c

@@ -504,7 +504,7 @@ static struct compiler default_compilers[] =
    "%{!M:%{!MM:%{!E:cc1plus %{!pipe:%g.i} %1 %2\
 		   %{!Q:-quiet} -dumpbase %b.cc %{d*} %{m*} %{a}\
 		   %{g*} %{O*} %{W*} %{w} %{pedantic*} %{ansi} %{traditional}\
-		   %{v:-version} %{pg:-p} %{p} %{f*}\
+		   %{v:-version} %{pg:-p} %{p} %{f*} %{+e*}\
 		   %{aux-info*}\
 		   %{pg:%{fomit-frame-pointer:%e-pg and -fomit-frame-pointer are incompatible}}\
 		   %{S:%W{o*}%{!o*:-o %b.s}}%{!S:-o %{|!pipe:%g.s}} |\n\
@@ -525,7 +525,7 @@ static struct compiler default_compilers[] =
   {"@c++-cpp-output",
    "cc1plus %i %1 %2 %{!Q:-quiet} %{d*} %{m*} %{a}\
 	    %{g*} %{O*} %{W*} %{w} %{pedantic*} %{ansi} %{traditional}\
-	    %{v:-version} %{pg:-p} %{p} %{f*}\
+	    %{v:-version} %{pg:-p} %{p} %{f*} %{+e*}\
 	    %{aux-info*}\
 	    %{pg:%{fomit-frame-pointer:%e-pg and -fomit-frame-pointer are incompatible}}\
 	    %{S:%W{o*}%{!o*:-o %b.s}}%{!S:-o %{|!pipe:%g.s}} |\n\
@@ -2017,6 +2017,9 @@ process_command (argc, argv)
 	  /* Record the part after the last comma.  */
 	  assembler_options[n_assembler_options - 1] = argv[i] + prev;
 	}
+      else if (argv[i][0] == '+' && argv[i][1] == 'e')
+	/* Compensate for the +e options to the C++ front-end.  */
+	n_switches++;
       else if (argv[i][0] == '-' && argv[i][1] != 0 && argv[i][1] != 'l')
 	{
 	  register char *p = &argv[i][1];
@@ -2097,6 +2100,18 @@ process_command (argc, argv)
 
   add_prefix (&startfile_prefix, standard_exec_prefix, 0, 1, NULL_PTR);
   add_prefix (&startfile_prefix, standard_exec_prefix_1, 0, 1, NULL_PTR);
+      else if (argv[i][0] == '+' && argv[i][1] == 'e')
+	{
+	  /* Compensate for the +e options to the C++ front-end;
+	     they're there simply for cfront call-compatability.  We do
+	     some magic in default_compilers to pass them down properly.
+	     Note we deliberately start at the `+' here, to avoid passing
+	     -e0 or -e1 down into the linker.  */
+	  switches[n_switches].part1 = &argv[i][0];
+	  switches[n_switches].args = 0;
+	  switches[n_switches].valid = 0;
+	  n_switches++;
+	}
 
   /* More prefixes are enabled in main, after we read the specs file
      and determine whether this is cross-compilation or not.  */