Commit b0618f38 authored by Arnaldo Carvalho de Melo's avatar Arnaldo Carvalho de Melo
Browse files

perf build: Gracefully fail the build if BUILD_BPF_SKEL=1 is specified and clang isn't available 



Build BPF skels require having a compiler able to generate BPF bytecode,
and so far this is only possible with clang, so check for its
availability and fail the build when the user explicitely ask for BPF
skels to be built.

Acked-by: default avatarNamhyung Kim <namhyung@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Andrii Nakryiko <andrii.nakryiko@gmail.com>,
Cc: Ian Rogers <irogers@google.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Song Liu <songliubraving@meta.com>
Yang: Yang Jihong <yangjihong1@huawei.com>,
Signed-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
parent 5f0b89e6

tools/perf/Makefile.config

+6 −0
Original line number Diff line number Diff line
@@ -216,6 +216,12 @@ ifeq ($(call get-executable,$(BISON)),) 
  dummy := $(error Error: $(BISON) is missing on this system, please install it)

endif



ifeq ($(BUILD_BPF_SKEL),1)

  ifeq ($(call get-executable,$(CLANG)),)

    dummy := $(error $(CLANG) is missing on this system, please install it to be able to build with BUILD_BPF_SKEL=1)

  endif

endif



ifneq ($(OUTPUT),)

  ifeq ($(shell expr $(shell $(BISON) --version | grep bison | sed -e 's/.\+ \([0-9]\+\).\([0-9]\+\).\([0-9]\+\)/\1\2\3/g') \>\= 371), 1)

    BISON_FILE_PREFIX_MAP := --file-prefix-map=$(OUTPUT)=