[Bug fortran/55534] -Wno-missing-include-dirs does not work with gfortran

["anlauf at gmx dot de" <gcc-bugzilla at gcc dot gnu dot org>]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55534

--- Comment #3 from Harald Anlauf <anlauf at gmx dot de> 2012-12-05 21:43:43 UTC ---
(In reply to comment #2)
> (See PR 54033 for the patch which originally added this feature.)
> 
> Untested patch.

With this patch, the warning is also gone.  :-)

However, now using the option -Wmissing-include-dirs
yields the message:

f951: warning: command line option '-Wmissing-include-dirs' is valid for
C/C++/ObjC/ObjC++ but not for Fortran [enabled by default]

Which might not be intended, although I can live with it. :-)

I addition to the patch in comment #2 tried:

Index: gcc/fortran/lang.opt
===================================================================
--- gcc/fortran/lang.opt        (revision 194167)
+++ gcc/fortran/lang.opt        (working copy)
@@ -254,6 +254,10 @@
 Fortran Warning
 Warn on intrinsics not part of the selected standard

+Wmissing-include-dirs
+Fortran Warning
+; Documented in C
+
 Wreal-q-constant
 Fortran Warning
 Warn about real-literal-constants with 'q' exponent-letter


Now the above warning is gone, but some piece is still missing...