From: Toke Høiland-Jørgensen toke@redhat.com
This adds support for specifying the libbpf include and object paths as arguments to the runqslower Makefile, to support reusing the libbpf version built as part of the selftests.
Signed-off-by: Toke Høiland-Jørgensen toke@redhat.com --- tools/bpf/runqslower/Makefile | 12 +++++++----- 1 file changed, 7 insertions(+), 5 deletions(-)
diff --git a/tools/bpf/runqslower/Makefile b/tools/bpf/runqslower/Makefile index b90044caf270..faf5418609ea 100644 --- a/tools/bpf/runqslower/Makefile +++ b/tools/bpf/runqslower/Makefile @@ -6,7 +6,9 @@ LLVM_STRIP := llvm-strip DEFAULT_BPFTOOL := $(OUTPUT)/sbin/bpftool BPFTOOL ?= $(DEFAULT_BPFTOOL) LIBBPF_SRC := $(abspath ../../lib/bpf) -INCLUDES := -I$(OUTPUT) -I$(abspath ../../lib) +BPFOBJ := $(OUTPUT)/libbpf.a +BPF_INCLUDE := $(OUTPUT) +INCLUDES := -I$(BPF_INCLUDE) -I$(OUTPUT) -I$(abspath ../../lib) CFLAGS := -g -Wall
# Try to detect best kernel BTF source @@ -37,7 +39,7 @@ clean: $(call msg,CLEAN) $(Q)rm -rf $(OUTPUT) runqslower
-$(OUTPUT)/runqslower: $(OUTPUT)/runqslower.o $(OUTPUT)/libbpf.a +$(OUTPUT)/runqslower: $(OUTPUT)/runqslower.o $(BPFOBJ) $(call msg,BINARY,$@) $(Q)$(CC) $(CFLAGS) -lelf -lz $^ -o $@
@@ -50,7 +52,7 @@ $(OUTPUT)/%.skel.h: $(OUTPUT)/%.bpf.o | $(BPFTOOL) $(call msg,GEN-SKEL,$@) $(Q)$(BPFTOOL) gen skeleton $< > $@
-$(OUTPUT)/%.bpf.o: %.bpf.c $(OUTPUT)/libbpf.a | $(OUTPUT) +$(OUTPUT)/%.bpf.o: %.bpf.c $(BPFOBJ) | $(OUTPUT) $(call msg,BPF,$@) $(Q)$(CLANG) -g -O2 -target bpf $(INCLUDES) \ -c $(filter %.c,$^) -o $@ && \ @@ -73,9 +75,9 @@ $(OUTPUT)/vmlinux.h: $(VMLINUX_BTF_PATH) | $(OUTPUT) $(BPFTOOL) fi $(Q)$(BPFTOOL) btf dump file $(VMLINUX_BTF_PATH) format c > $@
-$(OUTPUT)/libbpf.a: | $(OUTPUT) +$(BPFOBJ): | $(OUTPUT) $(Q)$(MAKE) $(submake_extras) -C $(LIBBPF_SRC) \ - OUTPUT=$(abs_out)/ $(abs_out)/libbpf.a + OUTPUT=$(abspath $(dir $@))/ $(abspath $@)
$(DEFAULT_BPFTOOL): $(Q)$(MAKE) $(submake_extras) -C ../bpftool \