Sort a list of files generated by AuxSourceDirectory().
Soting GLOB results is applied, but unfortunately it is not true for AuxSourceDirectory() command.
Since there are many legacy projects that uses AuxSourceDirectory(), the sorting should be applied to AuxSourceDirectory() too.
Checkout the sorting GLOB results via the url below:
file: Sort GLOB results to make it deterministic (#14491 (closed)) edcccde7
Signed-off-by: Junghyun Kim jh0822.kim@samsung.com