[CMake] Mixing C++ and Fortran

[Arjen Markus]

Javier Gonzalez wrote:

>
>>Good Fortran support is relatively new to CMake.  In fact, CVS CMake
>>is really the only version that handles all the Fortran depend stuff
>>reliably.  CMake relies on the compiler to provide the correct run
>>time libraries.  If you build with a C++ compiler, it will
>>automatically link in the run time libraries for C++ that go with that
>>compiler.  If you link with a fortran compiler, it will get the run
>>time libraries for the fortran compiler.  So, CMake has not had to
>>"care" about system runtime libraries.  It is easy to mix C with
>>anything because both Fortran and C++ always link in the C runtime
>>libraries by default.    Anyway, it is what it is.  If you figure
>>something out, we could add it to the cmake modules directory.
>>
>>-Bill
>>_______________________________________________
>>CMake mailing list
>>CMake at cmake.org
>>http://www.cmake.org/mailman/listinfo/cmake
>>
>>    
>>
>Just so that everyone knows. I have the same problem and trying to solve
>it was how I got to the problem I emailed a couple of days ago (about
>libgfortran). What I'm doing is finding the library and adding it
>directly. That can be a pain if you have many potential fortran
>compilers, I guess.
>  
>
Most compilers have some option to show what is actually going on at each
step. That should be helpful in finding out which libraries are to be used.

For instance: -v works splendidly for the GCC family of compilers (which
includes g95, although not an official part of GCC). A worrisome thing is,
that the collection of libraries may vary, depending on the compile options.

I do hope some practical solution will be found.

Regards,

Arjen
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