How to globally set the default clause to none?

Question

I know I can tell OpenMP not to share variables by default within a parallel region by using

#pragma omp parallel default none

But is there

Answer 1

All variables in OpenMP are shared by default. If you want a set of private variables you will need to specify these variables in a parallel pragma directive in a private clause. If you use

#pragma omp parallel default none

You need to specify the private variables and shared variables. For instance:

#pragma omp parallel default(none) private(i,j) shared(a,b) 

References:

[1] http://en.wikipedia.org/wiki/OpenMP#OpenMP_clauses

[2] https://computing.llnl.gov/tutorials/openMP/#ClausesDirectives