(warn_undef): New variable.

(main): Set warn_undef from -Wundef and -Wno-undef.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@13876 138bc75d-0d04-0410-961f-82ee72b054a4

diff --git a/gcc/cccp.c b/gcc/cccp.c
index cd02b59..5baa257 100644 (file)
--- a/gcc/cccp.c
+++ b/gcc/cccp.c
@@ -452,6 +452,10 @@ static int warn_stringify;
 
 static int warn_trigraphs;
 
+/* Nonzero means warn if undefined identifiers are evaluated in an #if.  */
+
+int warn_undef;
+
 /* Nonzero means warn if #import is used.  */
 
 static int warn_import = 1;
@@ -1546,6 +1550,10 @@ main (argc, argv)
          warn_stringify = 1;
        else if (!strcmp (argv[i], "-Wno-traditional"))
          warn_stringify = 0;
+       else if (!strcmp (argv[i], "-Wundef"))
+         warn_undef = 1;
+       else if (!strcmp (argv[i], "-Wno-undef"))
+         warn_undef = 0;
        else if (!strcmp (argv[i], "-Wimport"))
          warn_import = 1;
        else if (!strcmp (argv[i], "-Wno-import"))