Fortran 2008 - conditional compilation

Question

I need to use a conditional compilation in Fortran2008. So far I've found this solution, but it somehow doesn't work for me and despite compiling my code with -cpp flag like this

gfortran  -Dconnection_m_EXPORTS -I/home/martin/4Neuro/build/lib  -O2 -std=f2008 -cpp -fPIC   -c /home/martin/4Neuro/src/connection_m.f90 -o CMakeFiles/connection_m.dir/connection_m.f90.o

I'm still getting this error

/home/martin/4Neuro/src/connection_m.f90:133:13:
             #ifdef TIME_PROFILING
             1
Error: Invalid character in name at (1)
/home/martin/4Neuro/src/connection_m.f90:136:13:

             #endif
             1
Error: Invalid character in name at (1)
/home/martin/4Neuro/src/connection_m.f90:143:13:

             #ifdef TIME_PROFILING
             1
Error: Invalid character in name at (1)
/home/martin/4Neuro/src/connection_m.f90:148:13:

             #endif
             1
Error: Invalid character in name at (1)

Do you know, what am I doing wrong?

My gfortran version is: GNU Fortran (Ubuntu 6.2.0-5ubuntu12) 6.2.0 20161005 And my files have the extension .f90.

That looks ok to me. Can you try to create a minimal example? Or post your code? — Ross, Nov 20 '17 at 18:10
@Ross You're right, the problem disappeared, when I moved directives to the beginning of lines... Could you, please, write your comment as an answer, so I could accept it? — Eenoku, Nov 20 '17 at 18:17

score 1 · Accepted Answer · answered Nov 20 '17 at 18:55

1

Preprocessor directives with # must have # appear in column 1.

answered Nov 20 '17 at 18:55

Ross

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Fortran 2008 - conditional compilation

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