Command Reference2.  FPGA Express Shell Commandsexport_constraint



_N_A_M_E
          export_constraint
                         Export a contraint file.


SYNTAX
          string export_constraint -file _f_i_l_e__n_a_m_e

          string    _f_i_l_e__n_a_m_e


ARGUMENTS
          -file _f_i_l_e__n_a_m_e
                         This option specifies the name of the
                         output constraint file.


DESCRIPTION
          This command creates an FPGA Express constraints file.
          This file contains the performance constraints,
          attributes, and optimization options specified in the
          current chip. The exported constraint file is used by
          the import_constraint command to allow constraints to
          be transferred between pre-optimized implementations of
          similar designs.  It can not be used for reporting or
          editing.

          The command will write the current chip to disk before
          creating the constraint file.  This step ensures that
          the constraint file matches the constraint in the chip
          if the project is opened in another session.


EXAMPLES
          Write the constraint file am2910.exc.
          fe_shell > export_constraint -file am2910.exc
          Saving current chip for export...  Exporting chip
          constraints...  Done.


SEE ALSO
          object(2),current_chip(2),













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