[CMake] Problem with Fortran module enclosed in #ifdef

[Martin Apel]

Hi all,

I am experiencing a problem with one Fortran source file containing a
module definition. Unfortunately the whole source file is enclosed in
'#ifdef WINDOWS'. On Linux this causes the build process to fail,
because cmake wants to copy a generated .mod file, which does not exist.
The file containing the module has the suffix ".f". When changing the
suffix to ".F", everything works fine.
CMake probably thinks, the file need not be preprocessed before
scanning, if it has the suffix ".f". Is there any way to tell CMake,
that files with the suffix ".f" have to be preprocessed before
dependency scanning?

Regards,

Martin

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