1 files changed, 14 insertions, 0 deletions
diff --git a/gcc/opts.c b/gcc/opts.c
index 643f889..40e6acd 100644
--- a/gcc/opts.c
+++ b/gcc/opts.c
@@ -1086,6 +1086,20 @@ decode_options (unsigned int argc, const char **argv,
      check option consistency.  */
   if (flag_lto && flag_whopr)
     error ("-flto and -fwhopr are mutually exclusive");
+
+  /* We initialize flag_split_stack to -1 so that targets can set a
+     default value if they choose based on other options.  */
+  if (flag_split_stack == -1)
+    flag_split_stack = 0;
+  else
+    {
+      if (!targetm.supports_split_stack (true))
+	{
+	  error ("%<-fsplit-stack%> is not supported by "
+		 "this compiler configuration");
+	  flag_split_stack = 0;
+	}
+    }
 }
 
 #define LEFT_COLUMN	27