[Bug fortran/49138] Add /usr/include/fortran/{,gcc-<version>} to the file/module search path

["burnus at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49138

--- Comment #2 from Tobias Burnus <burnus at gcc dot gnu.org> 2011-05-24 14:54:03 UTC ---
(In reply to comment #1)
> The Fortran directories should be searched within the sysroot when there 
> is one (the same conditions under which such C directories are searched 
> within the sysroot).

OK, one then has the "fortran" subdirectory of: sysroot, LOCAL_INCLUDE_DIR, 
SYSTEM_INCLUDE_DIR and STANDARD_INCLUDE_DIR - in that order. Is the list
complete and correctly ordered?

> > The result of -print-mod-dir-suffix should be
> >   gcc-<module_version>/lib{,<qual>}
> 
> By "lib{,<qual>}" do you mean lib/$(gcc -print-multi-os-directory) ?

Yes - although using -print-multi-directory instead would be probably better as
it avoid the misleading "lib". Thus, instead of, e.g., ./lib32/ and ./lib/, one
has ./ and ./32/.

Thanks for your comments!