[Bug fortran/56408] Fix dependency handling of testsuite/gfortran.dg

[burnus at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56408

--- Comment #3 from Tobias Burnus <burnus at gcc dot gnu.org> 2013-02-20 14:50:04 UTC ---
Created attachment 29510
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=29510
Draft patch (fails due to issues mentioned in comment 3)

(In reply to comment #2)
> (In reply to comment #1)
> > Given that you can use dg.exp=nameoftest.f90 and run only that single test,
> > I think dg-additional-sources should be the way to go in those cases.

Actually, it currently doesn't work:

One cannot combine "! { do-do compile }" with dg-additional-sources. "dg-do
compile" uses "-S" with the "-o" option, but that does not support multiple
files. And using, e.g., "dg-do link" is not possible if one of the files has a
"dg-error".

Hence, the following test cases cannot be converted (they use "dg-error"):
- gfortran.dg/binding_label_tests_10.f03
- gfortran.dg/binding_label_tests_11.f03
- gfortran.dg/binding_label_tests_13.f03
- gfortran.dg/test_common_binding_labels_2.f03
- gfortran.dg/test_common_binding_labels_3.f03

The following could use "dg-do link" (they currently all uses "dg-do compile"):
- gfortran.dg/coarray_29_1.f90
- gfortran.dg/whole_file_28.f90
- gfortran.dg/whole_file_30.f90