Re: [dpdk-dev] [PATCH v3 7/8] mk: sort object files when building deps lists

[Thomas Monjalon <thomas@monjalon.net>]

23/06/2017 20:41, lboccass@brocade.com:
> From: Luca Boccassi <luca.boccassi@gmail.com>
> 
> In order to achieve reproducible builds, always use the same
> order when listing object files to build dependencies lists.
> 
> Signed-off-by: Luca Boccassi <luca.boccassi@gmail.com>
> ---
>  mk/rte.app.mk     | 4 ++--
>  mk/rte.hostapp.mk | 4 ++--
>  mk/rte.shared.mk  | 4 ++--
>  3 files changed, 6 insertions(+), 6 deletions(-)
> 
> --- a/mk/rte.app.mk
> +++ b/mk/rte.app.mk
> @@ -263,8 +263,8 @@ LDLIBS_NAMES += $(patsubst -Wl$(comma)-l%,lib%.a,$(filter -Wl$(comma)-l%,$(LDLIB
>  
>  # list of found libraries files (useful for deps). If not found, the
>  # library is silently ignored and dep won't be checked
> -LDLIBS_FILES := $(wildcard $(foreach dir,$(LDLIBS_PATH),\
> -	$(addprefix $(dir)/,$(LDLIBS_NAMES))))
> +LDLIBS_FILES := $(sort $(wildcard $(foreach dir,$(LDLIBS_PATH),\
> +	$(addprefix $(dir)/,$(LDLIBS_NAMES)))))

You cannot sort libraries.
Check - for instance - this comment above in this file:
	# Eliminate duplicates without sorting, only keep the last occurrence
	filter-libs = \

Why sorting them?
What is random in libraries list?