2004-07-16 Frank Ch. Eigler <fche@redhat.com>

[pf3gnuchains/gcc-fork.git] / gcc / c-opts.c

diff --git a/gcc/c-opts.c b/gcc/c-opts.c
index 06b8ed0..da35c53 100644 (file)
--- a/gcc/c-opts.c
+++ b/gcc/c-opts.c
@@ -51,8 +51,6 @@ Software Foundation, 59 Temple Place - Suite 330, Boston, MA
 #define TARGET_OPTF(ARG)
 #endif
 
-static int saved_lineno;
-
 /* CPP's options.  */
 static cpp_options *cpp_opts;
 
@@ -945,6 +943,11 @@ c_common_post_options (const char **pfilename)
       flag_inline_functions = 0;
     }
 
+  /* If we are given more than one input file, we must use
+     unit-at-a-time mode.  */
+  if (num_in_fnames > 1)
+    flag_unit_at_a_time = 1;
+
   /* Default to ObjC sjlj exception handling if NeXT runtime.  */
   if (flag_objc_sjlj_exceptions < 0)
     flag_objc_sjlj_exceptions = flag_next_runtime;
@@ -998,7 +1001,7 @@ c_common_post_options (const char **pfilename)
       init_c_lex ();
 
       /* Yuk.  WTF is this?  I do know ObjC relies on it somewhere.  */
-      input_line = 0;
+      input_location = UNKNOWN_LOCATION;
     }
 
   cb = cpp_get_callbacks (parse_in);
@@ -1006,8 +1009,7 @@ c_common_post_options (const char **pfilename)
   cb->dir_change = cb_dir_change;
   cpp_post_options (parse_in);
 
-  saved_lineno = input_line;
-  input_line = 0;
+  input_location = UNKNOWN_LOCATION;
 
   /* If an error has occurred in cpplib, note it so we fail
      immediately.  */
@@ -1033,8 +1035,6 @@ c_common_post_options (const char **pfilename)
 bool
 c_common_init (void)
 {
-  input_line = saved_lineno;
-
   /* Set up preprocessor arithmetic.  Must be done after call to
      c_common_nodes_and_builtins for type nodes to be good.  */
   cpp_opts->precision = TYPE_PRECISION (intmax_type_node);
@@ -1066,22 +1066,37 @@ c_common_init (void)
 void
 c_common_parse_file (int set_yydebug)
 {
+  unsigned int i;
+
+  /* Enable parser debugging, if requested and we can.  If requested
+     and we can't, notify the user.  */
 #if YYDEBUG != 0
   yydebug = set_yydebug;
 #else
   if (set_yydebug)
-    warning ("YYDEBUG not defined");
+    warning ("YYDEBUG was not defined at build time, -dy ignored");
 #endif
 
-  if (num_in_fnames > 1)
-    fatal_error ("sorry, inter-module analysis temporarily out of commission");
-
-  finish_options ();
-  pch_init ();
-  push_file_scope ();
-  c_parse_file ();
-  finish_file ();
-  pop_file_scope ();
+  i = 0;
+  for (;;)
+    {
+      finish_options ();
+      pch_init ();
+      push_file_scope ();
+      c_parse_file ();
+      finish_file ();
+      pop_file_scope ();
+
+      if (++i >= num_in_fnames)
+       break;
+      cpp_undef_all (parse_in);
+      this_input_filename
+       = cpp_read_main_file (parse_in, in_fnames[i]);
+      /* If an input file is missing, abandon further compilation.
+         cpplib has issued a diagnostic.  */
+      if (!this_input_filename)
+       break;
+    }
 }
 
 /* Common finish hook for the C, ObjC and C++ front ends.  */