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Subject[PATCH next 1/1] perf build: Warn about missing libelf before warning about missing libbpf
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>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
tools/perf/Makefile.config | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/tools/perf/Makefile.config b/tools/perf/Makefile.config
index b3e6ed10f40c6f6c..8b6cffbc485834c8 100644
--- a/tools/perf/Makefile.config
+++ b/tools/perf/Makefile.config
@@ -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
--
2.41.0
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