netdev - Re: [PATCH bpf-next 3/4] tools/resolve_btfids: Set srctree variable unconditionally

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Date:   Thu, 4 Feb 2021 23:41:26 +0000
From:   Song Liu <songliubraving@...com>
To:     Jiri Olsa <jolsa@...nel.org>
CC:     Alexei Starovoitov <ast@...nel.org>,
        Daniel Borkmann <daniel@...earbox.net>,
        Andrii Nakryiko <andriin@...com>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        "bpf@...r.kernel.org" <bpf@...r.kernel.org>,
        Martin Lau <kafai@...com>, Yonghong Song <yhs@...com>,
        John Fastabend <john.fastabend@...il.com>,
        KP Singh <kpsingh@...omium.org>,
        Masahiro Yamada <masahiroy@...nel.org>,
        Michal Marek <michal.lkml@...kovi.net>,
        "linux-kbuild@...r.kernel.org" <linux-kbuild@...r.kernel.org>
Subject: Re: [PATCH bpf-next 3/4] tools/resolve_btfids: Set srctree variable
 unconditionally



> On Feb 4, 2021, at 1:18 PM, Jiri Olsa <jolsa@...nel.org> wrote:
> 
> We want this clean to be called from tree's root Makefile,
> which defines same srctree variable and that will screw
> the make setup.
> 
> We actually do not use srctree being passed from outside,
> so we can solve this by setting current srctree value
> directly.
> 
> Also root Makefile does not define the implicit RM variable,
> so adding RM initialization.
> 
> Signed-off-by: Jiri Olsa <jolsa@...nel.org>

Acked-by: Song Liu <songliubraving@...com>


> ---
> tools/bpf/resolve_btfids/Makefile | 3 +--
> 1 file changed, 1 insertion(+), 2 deletions(-)
> 
> diff --git a/tools/bpf/resolve_btfids/Makefile b/tools/bpf/resolve_btfids/Makefile
> index 3007cfabf5e6..b41fc9a81e83 100644
> --- a/tools/bpf/resolve_btfids/Makefile
> +++ b/tools/bpf/resolve_btfids/Makefile
> @@ -2,11 +2,9 @@
> include ../../scripts/Makefile.include
> include ../../scripts/Makefile.arch
> 
> -ifeq ($(srctree),)
> srctree := $(patsubst %/,%,$(dir $(CURDIR)))
> srctree := $(patsubst %/,%,$(dir $(srctree)))
> srctree := $(patsubst %/,%,$(dir $(srctree)))
> -endif
> 
> ifeq ($(V),1)
>   Q =
> @@ -22,6 +20,7 @@ AR       = $(HOSTAR)
> CC       = $(HOSTCC)
> LD       = $(HOSTLD)
> ARCH     = $(HOSTARCH)
> +RM      ?= rm
> 
> OUTPUT ?= $(srctree)/tools/bpf/resolve_btfids/
> 
> -- 
> 2.26.2
>