[Bug fortran/18428] No preprocessing option -cpp for gfortran

[c dot lemmen at fz-juelich dot de]

------- Additional Comments From c dot lemmen at fz-juelich dot de  2005-08-12 12:29 -------
Rather than fiddling with -x f95-cpp-input I found that the best option is to
use the gcc specs option to redeclare suffix rules.  To enforce preprocessing
for files with suffix .f90 create a file override-specs.h with the content

> cat override-specs.h
.f90:
@f95-cpp-input
>gfortran -specs override-specs.h testcase.f90

Now, testcase.f90 will be preprocessed.  This should be reflected in the
documentation (rather than having to dig around the 400 page gcc manual) 


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18428