Why does the Generate compressed bitstreams option not work when targeting Intel® Arria® 10 devices?

Due to a known issue in Quartus® Prime Software version 15.1, an uncompressed rbf is always generated during compilation for Intel® Arria® 10 devices irrespective of the Generate compressed bitstreams option setting.

Use the Covert Programming File utility with the compression option to generate a compressed rbf.

1. Select Convert Programming File under the File menu.
2. Choose Raw Binary File (.rbf） Programming from the drop-down list of File types.
3. In the File name field, browse the target directory and specify an output file name.
4. Click Add File, then select the .sof file you want to convert to a .rbf file.
5. Highlight .sof shown in Input files to convert area, then click Properties
6. Enable Compression on SOF File Properties, then click OK
7. Click Generate

 This issue is fixed in Quartus® Prime Software 16.0.