Ubuntu 18.04 Can't use gcc - fopenmp option

I am using ubuntu 18.04 and the command gcc openmp1.c -o openmp1 –fopenmp returns this error:

gcc: error: –fopenmp: no such file or directory 

My gcc version:

gcc (Ubuntu 7.3.0-27ubuntu1~18.04) 7.3.0 

1 Answer

This is a copy-paste error : –fopenmp has a unicode dash in place of a regular ASCII dash. use this instead :

gcc -fopenmp