Re: problem with fortran sources in recent automake.

[Ralf Wildenhues]

Hello Dan,

* Dan McMahill wrote on Mon, Mar 10, 2008 at 01:49:54PM CET:
>
> I'm trying to debug a piece of open-source 3rd party software.  It mixes  
>  c++ and fortran and has a Makefile.am fragment that looks like:
>
> foo_SOURCES= src/file1.cpp src/file2.cpp src/file3.F src/file4.F
>
> The c++ parts compile file but then make dies with a complaint about no  
> rule for target file3.o.  So I took a look at the automake-1.10.1  
> generated Makefile.in and see something like this:
>
> am__objects_1 = src/file1.$(OBJEXT) src/file2.$(OBJEXT)
> am__objects_2 = file3.$(OBJEXT) file4.$(OBJEXT)

I assume that you're using the Automake option subdir-objects then,
right?

> Note that in am__objects_2, we've lost the "src/" part of the names of  
> the fortran sources.

Because in 1.10.1, subdir-objects weren't working for Fortran yet.
That limitation has been lifted in the current development sources
(in what will eventually be 1.11).

But one thing I don't understand: apart from the naming, you haven't
encountered any build failure, right?  Because AFAICS things should
still work.  If they don't, then please post 'make' output of such a
failure.

If you were not using subdir-objects, no object name would have a
directory part.

Cheers,
Ralf