The libopenssl is required by bpftool which is needed to generate BPF skeleton. Disable it by setting BUILD_BPF_SKEL to 0 otherwise it'll see build errors like below: CC /build/util/bpf_skel/.tmp/bootstrap/sign.o sign.c:16:10: fatal error: openssl/opensslv.h: No such file or directory 16 | #include | ^~~~~~~~~~~~~~~~~~~~ compilation terminated. make[3]: *** [Makefile:256: /build/util/bpf_skel/.tmp/bootstrap/sign.o] Error 1 make[3]: *** Waiting for unfinished jobs.... make[2]: *** [Makefile.perf:1211: /build/util/bpf_skel/.tmp/bootstrap/bpftool] Error 2 make[1]: *** [Makefile.perf:287: sub-make] Error 2 make: *** [Makefile:76: all] Error 2 Now it'll skip the build with the following message: Makefile.config:729: Warning: Disabled BPF skeletons as libopenssl is required Closes: https://lore.kernel.org/r/aP7uq6eVieG8v_v4@google.com Signed-off-by: Namhyung Kim --- tools/perf/Makefile.config | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/tools/perf/Makefile.config b/tools/perf/Makefile.config index 6b62fea21a0ad1ca..fd72bfbc83b38b3c 100644 --- a/tools/perf/Makefile.config +++ b/tools/perf/Makefile.config @@ -704,6 +704,11 @@ ifndef NO_LIBBPF endif endif +ifeq ($(feature-libopenssl), 1) + $(call detected,CONFIG_LIBOPENSSL) + CFLAGS += -DHAVE_LIBOPENSSL_SUPPORT +endif + ifndef BUILD_BPF_SKEL # BPF skeletons control a large number of perf features, by default # they are enabled. @@ -720,6 +725,9 @@ ifeq ($(BUILD_BPF_SKEL),1) else ifeq ($(filter -DHAVE_LIBBPF_SUPPORT, $(CFLAGS)),) $(warning Warning: Disabled BPF skeletons as libbpf is required) BUILD_BPF_SKEL := 0 + else ifeq ($(filter -DHAVE_LIBOPENSSL_SUPPORT, $(CFLAGS)),) + $(warning Warning: Disabled BPF skeletons as libopenssl is required) + BUILD_BPF_SKEL := 0 else ifeq ($(call get-executable,$(CLANG)),) $(warning Warning: Disabled BPF skeletons as clang ($(CLANG)) is missing) BUILD_BPF_SKEL := 0 -- 2.52.0.177.g9f829587af-goog