1 # SPDX-License-Identifier: GPL-2.0
3 abs_out := $(abspath $(OUTPUT))
7 LLVM_STRIP ?= llvm-strip
9 TOOLS_PATH := $(abspath ../../../../tools)
10 BPFTOOL_SRC := $(TOOLS_PATH)/bpf/bpftool
11 BPFTOOL_OUTPUT := $(abs_out)/bpftool
12 DEFAULT_BPFTOOL := $(BPFTOOL_OUTPUT)/bootstrap/bpftool
13 BPFTOOL ?= $(DEFAULT_BPFTOOL)
15 LIBBPF_SRC := $(TOOLS_PATH)/lib/bpf
16 LIBBPF_OUTPUT := $(abs_out)/libbpf
17 LIBBPF_DESTDIR := $(LIBBPF_OUTPUT)
18 LIBBPF_INCLUDE := $(LIBBPF_DESTDIR)/include
19 BPFOBJ := $(LIBBPF_OUTPUT)/libbpf.a
21 INCLUDES := -I$(OUTPUT) -I$(LIBBPF_INCLUDE) -I$(TOOLS_PATH)/include/uapi
29 msg = @printf ' %-8s %s%s\n' "$(1)" "$(notdir $(2))" "$(if $(3), $(3))";
30 MAKEFLAGS += --no-print-directory
31 submake_extras := feature_display=0
38 all: iterators.lskel-little-endian.h
40 big: iterators.lskel-big-endian.h
44 $(Q)rm -rf $(OUTPUT) iterators
46 iterators.lskel-%.h: $(OUTPUT)/%/iterators.bpf.o | $(BPFTOOL)
47 $(call msg,GEN-SKEL,$@)
48 $(Q)$(BPFTOOL) gen skeleton -L $< > $@
50 $(OUTPUT)/%/iterators.bpf.o: iterators.bpf.c $(BPFOBJ) | $(OUTPUT)
53 $(Q)$(CLANG) -g -O2 --target=bpf -m$* $(INCLUDES) \
54 -c $(filter %.c,$^) -o $@ && \
57 $(OUTPUT) $(LIBBPF_OUTPUT) $(BPFTOOL_OUTPUT):
61 $(BPFOBJ): $(wildcard $(LIBBPF_SRC)/*.[ch] $(LIBBPF_SRC)/Makefile) | $(LIBBPF_OUTPUT)
62 $(Q)$(MAKE) $(submake_extras) -C $(LIBBPF_SRC) \
63 OUTPUT=$(abspath $(dir $@))/ prefix= \
64 DESTDIR=$(LIBBPF_DESTDIR) $(abspath $@) install_headers
66 $(DEFAULT_BPFTOOL): | $(BPFTOOL_OUTPUT)
67 $(Q)$(MAKE) $(submake_extras) -C $(BPFTOOL_SRC) OUTPUT=$(BPFTOOL_OUTPUT)/ bootstrap