1 # SPDX-License-Identifier: GPL-2.0 2 OUTPUT := .output 3 abs_out := $(abspath $(OUTPUT)) 4 5 CLANG ?= clang 6 LLC ?= llc 7 LLVM_STRIP ?= llvm-strip 8 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) 14 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 := $(LIBBPF_OUTPUT)/libbpf.a 20 21 INCLUDES := -I$(OUTPUT) -I$(LIBBPF_INCLUDE) -I$(TOOLS_PATH)/include/uapi 22 CFLAGS := -g -Wall 23 24 ifeq ($(V),1) 25 Q = 26 msg = 27 else 28 Q = @ 29 msg = @printf ' %-8s %s%s\n' "$(1)" "$(notdir $(2))" "$(if $(3), $(3))"; 30 MAKEFLAGS += --no-print-directory 31 submake_extras := feature_display=0 32 endif 33 34 .DELETE_ON_ERROR: 35 36 .PHONY: all clean 37 38 all: iterators.lskel-little-endian.h 39 40 big: iterators.lskel-big-endian.h 41 42 clean: 43 $(call msg,CLEAN) 44 $(Q)rm -rf $(OUTPUT) iterators 45 46 iterators.lskel-%.h: $(OUTPUT)/%/iterators.bpf.o | $(BPFTOOL) 47 $(call msg,GEN-SKEL,$@) 48 $(Q)$(BPFTOOL) gen skeleton -L $< > $@ 49 50 $(OUTPUT)/%/iterators.bpf.o: iterators.bpf.c $(BPFOBJ) | $(OUTPUT) 51 $(call msg,BPF,$@) 52 $(Q)mkdir -p $(@D) 53 $(Q)$(CLANG) -g -O2 --target=bpf -m$* $(INCLUDES) \ 54 -c $(filter %.c,$^) -o $@ && \ 55 $(LLVM_STRIP) -g $@ 56 57 $(OUTPUT) $(LIBBPF_OUTPUT) $(BPFTOOL_OUTPUT): 58 $(call msg,MKDIR,$@) 59 $(Q)mkdir -p $@ 60 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 65 66 $(DEFAULT_BPFTOOL): | $(BPFTOOL_OUTPUT) 67 $(Q)$(MAKE) $(submake_extras) -C $(BPFTOOL_SRC) OUTPUT=$(BPFTOOL_OUTPUT)/ bootstrap
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