netdev - RE: [PATCH 25/29] netfilter, kbuild: use canonical method to specify objs.

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Date:   Fri, 30 Jun 2017 11:17:41 +0000
From:   David Laight <David.Laight@...LAB.COM>
To:     'Pablo Neira Ayuso' <pablo@...filter.org>,
        "netfilter-devel@...r.kernel.org" <netfilter-devel@...r.kernel.org>
CC:     "davem@...emloft.net" <davem@...emloft.net>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>
Subject: RE: [PATCH 25/29] netfilter, kbuild: use canonical method to
 specify objs.

From: Pablo Neira Ayuso
> Sent: 29 June 2017 23:53
> Should use ":=" instead of "+=".
...
> diff --git a/net/netfilter/Makefile b/net/netfilter/Makefile
> index c9b78e7b342f..913380919301 100644
> --- a/net/netfilter/Makefile
> +++ b/net/netfilter/Makefile
> @@ -70,10 +70,9 @@ obj-$(CONFIG_NETFILTER_SYNPROXY) += nf_synproxy_core.o
>  obj-$(CONFIG_NF_DUP_NETDEV)	+= nf_dup_netdev.o
> 
>  # nf_tables
> -nf_tables-objs += nf_tables_core.o nf_tables_api.o nf_tables_trace.o
> -nf_tables-objs += nft_immediate.o nft_cmp.o nft_range.o
> -nf_tables-objs += nft_bitwise.o nft_byteorder.o nft_payload.o
> -nf_tables-objs += nft_lookup.o nft_dynset.o
> +nf_tables-objs := nf_tables_core.o nf_tables_api.o nf_tables_trace.o \
> +		  nft_immediate.o nft_cmp.o nft_range.o nft_bitwise.o \
> +		  nft_byteorder.o nft_payload.o nft_lookup.o nft_dynset.o

Why?
My preference is to add each file on its own line.
Generates much less churn when files are added or removed.

	David