Description

Prior to Vivado 2015.3 some users found it difficult to determine the location from which to source a script generated with the write_project_tcl command. 

The directory structure must be maintained from when the script was created for it to rebuild successfully.

The -origin_dir switch has been added to the write_project_tcl command so that the user can specify the directory of origin.

This allows a script to be sourced from any location so that the project can be successfully rebuilt.

Solution

In Vivado 2015.3 there are two ways to use the switch.

Option 1) 

Set the 'origin_dir_loc' variable with the desired relative/absolute path in the Tcl shell before sourcing the generated script. 

The script will set this value as origin_dir and resolve the source file paths accordingly.

Option 2) 

Pass '--origin_dir ' on the Vivado command line.

For example:

vivado -mode tcl -source rebuild.tcl -tclargs --origin_dir ".."