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perf build: Warn about missing libelf before warning about missing libbpf

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As libelf is a requirement for libbpf if it is not available, as in some
container build tests where NO_LIBELF=1 is used, then better warn about
the most basic library first.

Ditto for libz, check its availability before libbpf too.

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: https://lore.kernel.org/lkml/ZUEehyDk0FkPnvMR@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Arnaldo Carvalho de Melo 2023-10-11 18:14:52 -03:00
parent c8e3ade38b
commit 851bbccf6b
1 changed files with 4 additions and 4 deletions
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8
tools/perf/Makefile.config
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@ -680,15 +680,15 @@ ifndef BUILD_BPF_SKEL
endif
ifeq ($(BUILD_BPF_SKEL),1)
ifeq ($(filter -DHAVE_LIBBPF_SUPPORT, $(CFLAGS)),)
dummy := $(warning Warning: Disabled BPF skeletons as libbpf is required)
BUILD_BPF_SKEL := 0
else ifeq ($(filter -DHAVE_LIBELF_SUPPORT, $(CFLAGS)),)
ifeq ($(filter -DHAVE_LIBELF_SUPPORT, $(CFLAGS)),)
dummy := $(warning Warning: Disabled BPF skeletons as libelf is required by bpftool)
BUILD_BPF_SKEL := 0
else ifeq ($(filter -DHAVE_ZLIB_SUPPORT, $(CFLAGS)),)
dummy := $(warning Warning: Disabled BPF skeletons as zlib is required by bpftool)
BUILD_BPF_SKEL := 0
else ifeq ($(filter -DHAVE_LIBBPF_SUPPORT, $(CFLAGS)),)
dummy := $(warning Warning: Disabled BPF skeletons as libbpf is required)
BUILD_BPF_SKEL := 0
else ifeq ($(call get-executable,$(CLANG)),)
dummy := $(warning Warning: Disabled BPF skeletons as clang ($(CLANG)) is missing)
BUILD_BPF_SKEL := 0