[Numpy-discussion] [f2py] f2py ignores 'fortranname' inside F90 modules?

[Irwin Zaid]

Hi all,

I've been having an issue with f2py simply ignoring the fortranname 
option if the Fortran subroutine is inside an F90 module. That option is 
useful for renaming Fortran subroutines.

I don't know if this behaviour is to be expected, or if I am doing 
something wrong. I would definitely appreciate any help!

As an example, here is code that correctly produces a Python module 
'test' with a single Fortran subroutine 'my_wrapped_subroutine'.

TEST_SUBROUTINE.F90
-------------------
subroutine my_subroutine()
     write (*,*) 'Hello, world!'
end subroutine my_subroutine

TEST_SUBROUTINE.PYF
-------------------
python module test
     interface
         subroutine my_wrapped_subroutine()
             fortranname my_subroutine
         end subroutine my_wrapped_subroutine
     end interface
end python module test

But, when the Fortran subroutine 'my_subroutine' is placed inside a 
module, the fortranname option seems to be entirely ignored. The 
following example fails to compile. The error is "Error: Symbol 
'my_wrapped_subroutine' referenced at (1) not found in module 'my_module'".

TEST_MODULE.F90
---------------
module my_module
     contains
     subroutine my_subroutine()
         write (*,*) 'Hello, world!'
     end subroutine my_subroutine
end module my_module

TEST_MODULE.PYF
---------------
python module test
     interface
         module my_module
             contains
             subroutine my_wrapped_subroutine()
                 fortranname my_subroutine
             end subroutine my_wrapped_subroutine
         end module my_module
     end interface
end python module test

F2py is a great tool aside from this and a few other minor quibbles. So 
thanks a lot!

Cheers,

Irwin