2009-10-26 Richard Guenther <rguenther@suse.de>

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

diff --git a/gcc/c-opts.c b/gcc/c-opts.c
index e026fd9..6c2f5a5 100644 (file)
--- a/gcc/c-opts.c
+++ b/gcc/c-opts.c
@@ -1033,6 +1033,29 @@ c_common_post_options (const char **pfilename)
   C_COMMON_OVERRIDE_OPTIONS;
 #endif
 
+  if (flag_lto || flag_whopr)
+    {
+#ifdef ENABLE_LTO
+      flag_generate_lto = 1;
+
+      /* When generating IL, do not operate in whole-program mode.
+        Otherwise, symbols will be privatized too early, causing link
+        errors later.  */
+      flag_whole_program = 0;
+
+      /* FIXME lto.  Disable var-tracking until debug information
+        is properly handled in free_lang_data.  */
+      flag_var_tracking = 0;
+#else
+      error ("LTO support has not been enabled in this configuration");
+#endif
+    }
+
+  /* Reconcile -flto and -fwhopr.  Set additional flags as appropriate and
+     check option consistency.  */
+  if (flag_lto && flag_whopr)
+    error ("-flto and -fwhopr are mutually exclusive");
+
   /* Excess precision other than "fast" requires front-end
      support.  */
   if (c_dialect_cxx ())