From: Toke Høiland-Jørgensen <toke@xxxxxxxxxx> 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@xxxxxxxxxx> --- 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 \
