perf build: Default BUILD_BPF_SKEL, warn/disable for missing deps

[sfrench/cifs-2.6.git] / tools / perf / Makefile.perf

diff --git a/tools/perf/Makefile.perf b/tools/perf/Makefile.perf
index 8d0f6d2bbc7a78e4a5d9fc45acefe62dd1a694e0..98604e396ac33643a74c50781ff3804625efddb0 100644 (file)
--- a/tools/perf/Makefile.perf
+++ b/tools/perf/Makefile.perf
@@ -120,7 +120,7 @@ include ../scripts/utilities.mak
 #
 # Define NO_LIBDEBUGINFOD if you do not want support debuginfod
 #
-# Define BUILD_BPF_SKEL to enable BPF skeletons
+# Set BUILD_BPF_SKEL to 0 to override BUILD_BPF_SKEL and not build BPF skeletons
 #
 # Define BUILD_NONDISTRO to enable building an linking against libbfd and
 # libiberty distribution license incompatible libraries.
@@ -1042,7 +1042,7 @@ SKELETONS += $(SKEL_OUT)/augmented_raw_syscalls.skel.h
 $(SKEL_TMP_OUT) $(LIBAPI_OUTPUT) $(LIBBPF_OUTPUT) $(LIBPERF_OUTPUT) $(LIBSUBCMD_OUTPUT) $(LIBSYMBOL_OUTPUT):
        $(Q)$(MKDIR) -p $@
 
-ifdef BUILD_BPF_SKEL
+ifeq ($(CONFIG_PERF_BPF_SKEL),y)
 BPFTOOL := $(SKEL_TMP_OUT)/bootstrap/bpftool
 # Get Clang's default includes on this system, as opposed to those seen by
 # '--target=bpf'. This fixes "missing" files on some architectures/distros,
@@ -1120,11 +1120,11 @@ bpf-skel: $(SKELETONS)
 
 .PRECIOUS: $(SKEL_TMP_OUT)/%.bpf.o
 
-else # BUILD_BPF_SKEL
+else # CONFIG_PERF_BPF_SKEL
 
 bpf-skel:
 
-endif # BUILD_BPF_SKEL
+endif # CONFIG_PERF_BPF_SKEL
 
 bpf-skel-clean:
        $(call QUIET_CLEAN, bpf-skel) $(RM) -r $(SKEL_TMP_OUT) $(SKELETONS)