* gfortran preprocessor compiler options
@ 2023-12-01 17:20 Rasmus Vikhamar-Sandberg
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From: Rasmus Vikhamar-Sandberg @ 2023-12-01 17:20 UTC (permalink / raw)
To: fortran
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Hello.
I have a question. I posted it first on stackoverflow.
https://stackoverflow.com/questions/77585795/how-do-i-get-gfortran-to-generate-architecture-specific-predefined-macros.
The question is how do I get gfortran to generate architecture specific predefined macros like __SSE2__, __AVX__ and __AVX512F__?
If I run
echo | gfortran -E -dM -march=native
I get the desired predefined macros printed to the screen. If I compile with
gfortran -c <source.f90> -cpp -march=native
I don't get all of the predefined macros. It is almost as if gfortran does not pass the compiler option -march=native to the preprocessor.
Best,
Rasmus Vikhamar
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