#ifdef with gfortran 77

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Published on 2010-05-11T08:46:17Z Indexed on 2010/05/11 8:54 UTC
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fortran77

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ifdef

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preprocessor-directives

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debugging

I am using gfortran to compile FORTRAN 77 and would like to have DEBUG build options by using the preprocessor directive #ifdef. However, when I use them I get compile time warnings "Illegal preprocessor directive". Is it possible to have this functionality without deviating from the standard toolchain?

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