wait statement error in quartus

Mentioned here that:

The Quartus® II software supports only a single VHDL wait-until statement in a process. Other VHDL wait constructs such as wait-for statements, or processes with more than one wait statement, are not synthesizable.

Useful links:

  1. Table of Quartus II support for sequential statements
  2. A synthesizable delay generator instead of ‘wait for statement’
  3. Some discussions about this issues here and here