[Bug-xorriso] how to create reproducible ISO files?

[Butler, Peter]

I need to be able to create reproducible ISO files.  That is, if I recreate an 
ISO on the same file(s) using precisely the same directory structure and 
precisely the same command line arguments, I want the 'new' ISO to be 
byte-for-byte compatible with the original one.

I thought the following command might solve it, but alas the two ISO files, 
while identical in size, are not identical at a binary level (note that I am 
only putting a single file (called 'file') into the ISO FS):

xorriso -as genisofs -o test.iso file -- -volume_date c 2016010101010101 
-volume_date m 2016010101010101 -volume_date x 2016010101010101 -volume_date f 
2016010101010101 -alter_date b 2016010101010101 file -- -alter_date c 
2016010101010101 file -- -alter_date a 2016010101010101 file --

(I have also tried that command with "-as mkisofs")

Any ideas?