sort input files (issue 347770043 by address@hidden)

[dak]

https://codereview.appspot.com/347770043/diff/1/stepmake/stepmake/c++-vars.make
File stepmake/stepmake/c++-vars.make (right):

https://codereview.appspot.com/347770043/diff/1/stepmake/stepmake/c++-vars.make#newcode14
stepmake/stepmake/c++-vars.make:14: CC_FILES := $(sort $(call
src-wildcard,*.cc))
src-wildcard actually uses the wildcard function of Make.  The
documentation of it does not mention sorting in any manner.  However,
since it is modelled after shell globs, it would seem weird for it not
to sort.  So the question is whether this should rather be addressed in
Make or whether this is a symptom of a different problem (like
LC_COLLATE having different settings on different systems, something
likely also affecting the outcome of the "sort" function).  Short of
that, wouldn't it make more sense to redefine src-wildcard to always
sort?

It's defined as
stepmake/stepmake/generic-vars.make:src-wildcard = $(subst
$(src-dir)/,,$(wildcard $(src-dir)/$(1)))

https://codereview.appspot.com/347770043/