AR# 61033
|2014.2 Vivado - ERROR: [Common 17-53] User Exception: Constraints cannot be saved due to read-only file:<>/.xdc
描述
This issue occurs in Vivado 2014.2 and earlier, if a design has multiple XDC files (Non-target) with the read-only attribute.When a new constraint is added or if constraints from the target-XDC file are modified, the following message will be received even though these are not the target XDC files:
ERROR: [Common 17-53] User Exception: Constraints cannot be saved due to read-only file:<>/<xxxx>.xdc
Suggestions include:
#160;1. Change the file's permissions on disk and retry 'Save Constraints'
2. Import the file into the project and retry 'Save Constraints'
3. Save an entirely new constraints set using 'Save Constraints As...'
解决方案
This problem has been fixed in Vivado 2014.3
For versions where the problem occurs, the solution is to change the XDC files to writeable mode.
Even though they are not written to, Vivado is checking to see that they are not READ_ONLY.
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