[CMake] enable_language( ... OPTIONAL) causes error or second cmake run

[Alexander Neundorf]

On Wednesday 25 November 2009, Marcel Loose wrote:
> Hi Alex,
>
> Maybe I'm overlooking all kinds of side effects, but the problem is in
> line 6 of CMakeFortranInformation.cmake, where get_filename_component()
> is called with an incorrect number of arguments. This happens because
> ${CMAKE_Fortran_COMPILER} is empty. If I simply put quotes around
> ${CMAKE_Fortran_COMPILER} the problem is solved. Or so it seems. Right,
> or wrong?

I think there's more to it IIRC, the rest of the enable-language process has 
to be canceled correctly, which is probably not the case with your fix.
But please put this comment in the bugtracker, so it doesn't get lost.

Alex