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From: Jiri Olsa <jolsa@redhat.com>
To: Song Liu <songliubraving@fb.com>
Cc: linux-kernel@vger.kernel.org, acme@kernel.org,
	peterz@infradead.org, mingo@redhat.com,
	alexander.shishkin@linux.intel.com, namhyung@kernel.org,
	mark.rutland@arm.com, kernel-team@fb.com
Subject: Re: [PATCH v5 2/4] perf: support build BPF skeletons with perf
Date: Mon, 28 Dec 2020 13:55:54 +0100	[thread overview]
Message-ID: <20201228125554.GC450923@krava> (raw)
In-Reply-To: <20201215181412.1730974-3-songliubraving@fb.com>

On Tue, Dec 15, 2020 at 10:14:10AM -0800, Song Liu wrote:

SNIP

>  HOSTCC  ?= gcc
>  HOSTLD  ?= ld
>  HOSTAR  ?= ar
> +CLANG   ?= clang
> +LLVM_STRIP ?= llvm-strip
>  
>  PKG_CONFIG = $(CROSS_COMPILE)pkg-config
>  LLVM_CONFIG ?= llvm-config
> @@ -735,7 +739,8 @@ prepare: $(OUTPUT)PERF-VERSION-FILE $(OUTPUT)common-cmds.h archheaders $(drm_ioc
>  	$(x86_arch_prctl_code_array) \
>  	$(rename_flags_array) \
>  	$(arch_errno_name_array) \
> -	$(sync_file_range_arrays)
> +	$(sync_file_range_arrays) \
> +	bpf-skel
>  
>  $(OUTPUT)%.o: %.c prepare FORCE
>  	$(Q)$(MAKE) -f $(srctree)/tools/build/Makefile.build dir=$(build-dir) $@
> @@ -1008,7 +1013,43 @@ config-clean:
>  python-clean:
>  	$(python-clean)
>  
> -clean:: $(LIBTRACEEVENT)-clean $(LIBAPI)-clean $(LIBBPF)-clean $(LIBSUBCMD)-clean $(LIBPERF)-clean config-clean fixdep-clean python-clean
> +SKEL_OUT := $(abspath $(OUTPUT)util/bpf_skel)
> +SKEL_TMP_OUT := $(abspath $(SKEL_OUT)/.tmp)
> +SKELETONS :=
> +
> +ifdef BUILD_BPF_SKEL
> +BPFTOOL := $(SKEL_TMP_OUT)/bpftool-bootstrap

I think this needs to be:

  BPFTOOL := $(SKEL_TMP_OUT)/bootstrap/bpftool

otherwise it won't compile for me

jirka


  reply	other threads:[~2020-12-28 12:57 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-12-15 18:14 [PATCH v5 0/4] Introduce perf-stat -b for BPF programs Song Liu
2020-12-15 18:14 ` [PATCH v5 1/4] bpftool: add Makefile target bootstrap Song Liu
2020-12-15 18:14 ` [PATCH v5 2/4] perf: support build BPF skeletons with perf Song Liu
2020-12-28 12:55   ` Jiri Olsa [this message]
2020-12-28 17:33     ` Song Liu
2020-12-15 18:14 ` [PATCH v5 3/4] perf-stat: enable counting events for BPF programs Song Liu
2020-12-15 18:14 ` [PATCH v5 4/4] perf-stat: add documentation for -b option Song Liu

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