org-export-babel-evaluate

org-export-babel-evaluate is a variable defined in `ob-exp.el'.
Its value is

t

• This variable is safe as a file local variable if its value
  satisfies the predicate which is a byte-compiled expression.
  

Documentation:
Switch controlling code evaluation during export.
When set to nil no code will be evaluated as part of the export
process. When set to 'inline-only, only inline code blocks will
be executed.

You can customize this variable.

This variable was introduced, or its default value was changed, in version 24.1 of Emacs.