Setting glx_align64 to '' gives a null string in the arguments list passed
to the compiler. This is taken as an input filename, leading to:
"cc: error: : No such file or directory"
Instead, assign an empty list to glx_align64, which gets flattened to
nothing in the arguments list.
Signed-off-by: Jon Turney <jon.turney@dronecode.org.uk>
Signed-off-by: Eric Anholt <eric@anholt.net>
Reviewed-by: Eric Anholt <eric@anholt.net>
c30eca6887