1f5c27da4SBenjamin Tissoires# SPDX-License-Identifier: GPL-2.0 2f5c27da4SBenjamin TissoiresOUTPUT := .output 3f5c27da4SBenjamin Tissoiresabs_out := $(abspath $(OUTPUT)) 4f5c27da4SBenjamin Tissoires 5f5c27da4SBenjamin TissoiresCLANG ?= clang 6f5c27da4SBenjamin TissoiresLLC ?= llc 7f5c27da4SBenjamin TissoiresLLVM_STRIP ?= llvm-strip 8f5c27da4SBenjamin Tissoires 9f5c27da4SBenjamin TissoiresTOOLS_PATH := $(abspath ../../../../tools) 10f5c27da4SBenjamin TissoiresBPFTOOL_SRC := $(TOOLS_PATH)/bpf/bpftool 11f5c27da4SBenjamin TissoiresBPFTOOL_OUTPUT := $(abs_out)/bpftool 12f5c27da4SBenjamin TissoiresDEFAULT_BPFTOOL := $(BPFTOOL_OUTPUT)/bootstrap/bpftool 13f5c27da4SBenjamin TissoiresBPFTOOL ?= $(DEFAULT_BPFTOOL) 14f5c27da4SBenjamin Tissoires 15f5c27da4SBenjamin TissoiresLIBBPF_SRC := $(TOOLS_PATH)/lib/bpf 16f5c27da4SBenjamin TissoiresLIBBPF_OUTPUT := $(abs_out)/libbpf 17f5c27da4SBenjamin TissoiresLIBBPF_DESTDIR := $(LIBBPF_OUTPUT) 18f5c27da4SBenjamin TissoiresLIBBPF_INCLUDE := $(LIBBPF_DESTDIR)/include 19f5c27da4SBenjamin TissoiresBPFOBJ := $(LIBBPF_OUTPUT)/libbpf.a 20f5c27da4SBenjamin Tissoires 21f5c27da4SBenjamin TissoiresINCLUDES := -I$(OUTPUT) -I$(LIBBPF_INCLUDE) -I$(TOOLS_PATH)/include/uapi 22f5c27da4SBenjamin TissoiresCFLAGS := -g -Wall 23f5c27da4SBenjamin Tissoires 24f5c27da4SBenjamin TissoiresVMLINUX_BTF_PATHS ?= $(if $(O),$(O)/vmlinux) \ 25f5c27da4SBenjamin Tissoires $(if $(KBUILD_OUTPUT),$(KBUILD_OUTPUT)/vmlinux) \ 26f5c27da4SBenjamin Tissoires ../../../../vmlinux \ 27f5c27da4SBenjamin Tissoires /sys/kernel/btf/vmlinux \ 28f5c27da4SBenjamin Tissoires /boot/vmlinux-$(shell uname -r) 29f5c27da4SBenjamin TissoiresVMLINUX_BTF ?= $(abspath $(firstword $(wildcard $(VMLINUX_BTF_PATHS)))) 30f5c27da4SBenjamin Tissoiresifeq ($(VMLINUX_BTF),) 31f5c27da4SBenjamin Tissoires$(error Cannot find a vmlinux for VMLINUX_BTF at any of "$(VMLINUX_BTF_PATHS)") 32f5c27da4SBenjamin Tissoiresendif 33f5c27da4SBenjamin Tissoires 34f5c27da4SBenjamin Tissoiresifeq ($(V),1) 35f5c27da4SBenjamin TissoiresQ = 36f5c27da4SBenjamin Tissoiresmsg = 37f5c27da4SBenjamin Tissoireselse 38f5c27da4SBenjamin TissoiresQ = @ 39f5c27da4SBenjamin Tissoiresmsg = @printf ' %-8s %s%s\n' "$(1)" "$(notdir $(2))" "$(if $(3), $(3))"; 40f5c27da4SBenjamin TissoiresMAKEFLAGS += --no-print-directory 41f5c27da4SBenjamin Tissoiressubmake_extras := feature_display=0 42f5c27da4SBenjamin Tissoiresendif 43f5c27da4SBenjamin Tissoires 44f5c27da4SBenjamin Tissoires.DELETE_ON_ERROR: 45f5c27da4SBenjamin Tissoires 46f5c27da4SBenjamin Tissoires.PHONY: all clean 47f5c27da4SBenjamin Tissoires 48f5c27da4SBenjamin Tissoiresall: entrypoints.lskel.h 49f5c27da4SBenjamin Tissoires 50f5c27da4SBenjamin Tissoiresclean: 51f5c27da4SBenjamin Tissoires $(call msg,CLEAN) 52f5c27da4SBenjamin Tissoires $(Q)rm -rf $(OUTPUT) entrypoints 53f5c27da4SBenjamin Tissoires 54f5c27da4SBenjamin Tissoiresentrypoints.lskel.h: $(OUTPUT)/entrypoints.bpf.o | $(BPFTOOL) 55f5c27da4SBenjamin Tissoires $(call msg,GEN-SKEL,$@) 56f5c27da4SBenjamin Tissoires $(Q)$(BPFTOOL) gen skeleton -L $< > $@ 57f5c27da4SBenjamin Tissoires 58f5c27da4SBenjamin Tissoires 59f5c27da4SBenjamin Tissoires$(OUTPUT)/entrypoints.bpf.o: entrypoints.bpf.c $(OUTPUT)/vmlinux.h $(BPFOBJ) | $(OUTPUT) 60f5c27da4SBenjamin Tissoires $(call msg,BPF,$@) 61*bbaf1ff0SFangrui Song $(Q)$(CLANG) -g -O2 --target=bpf $(INCLUDES) \ 62f5c27da4SBenjamin Tissoires -c $(filter %.c,$^) -o $@ && \ 63f5c27da4SBenjamin Tissoires $(LLVM_STRIP) -g $@ 64f5c27da4SBenjamin Tissoires 65f5c27da4SBenjamin Tissoires$(OUTPUT)/vmlinux.h: $(VMLINUX_BTF) $(BPFTOOL) | $(INCLUDE_DIR) 66f5c27da4SBenjamin Tissoiresifeq ($(VMLINUX_H),) 67f5c27da4SBenjamin Tissoires $(call msg,GEN,,$@) 68f5c27da4SBenjamin Tissoires $(Q)$(BPFTOOL) btf dump file $(VMLINUX_BTF) format c > $@ 69f5c27da4SBenjamin Tissoireselse 70f5c27da4SBenjamin Tissoires $(call msg,CP,,$@) 71f5c27da4SBenjamin Tissoires $(Q)cp "$(VMLINUX_H)" $@ 72f5c27da4SBenjamin Tissoiresendif 73f5c27da4SBenjamin Tissoires 74f5c27da4SBenjamin Tissoires$(OUTPUT) $(LIBBPF_OUTPUT) $(BPFTOOL_OUTPUT): 75f5c27da4SBenjamin Tissoires $(call msg,MKDIR,$@) 76f5c27da4SBenjamin Tissoires $(Q)mkdir -p $@ 77f5c27da4SBenjamin Tissoires 78f5c27da4SBenjamin Tissoires$(BPFOBJ): $(wildcard $(LIBBPF_SRC)/*.[ch] $(LIBBPF_SRC)/Makefile) | $(LIBBPF_OUTPUT) 79f5c27da4SBenjamin Tissoires $(Q)$(MAKE) $(submake_extras) -C $(LIBBPF_SRC) \ 80f5c27da4SBenjamin Tissoires OUTPUT=$(abspath $(dir $@))/ prefix= \ 81f5c27da4SBenjamin Tissoires DESTDIR=$(LIBBPF_DESTDIR) $(abspath $@) install_headers 82f5c27da4SBenjamin Tissoires 83f5c27da4SBenjamin Tissoiresifeq ($(CROSS_COMPILE),) 84f5c27da4SBenjamin Tissoires$(DEFAULT_BPFTOOL): $(BPFOBJ) | $(BPFTOOL_OUTPUT) 85f5c27da4SBenjamin Tissoires $(Q)$(MAKE) $(submake_extras) -C $(BPFTOOL_SRC) \ 86f5c27da4SBenjamin Tissoires OUTPUT=$(BPFTOOL_OUTPUT)/ \ 87f5c27da4SBenjamin Tissoires LIBBPF_BOOTSTRAP_OUTPUT=$(LIBBPF_OUTPUT)/ \ 88f5c27da4SBenjamin Tissoires LIBBPF_BOOTSTRAP_DESTDIR=$(LIBBPF_DESTDIR)/ bootstrap 89f5c27da4SBenjamin Tissoireselse 90f5c27da4SBenjamin Tissoires$(DEFAULT_BPFTOOL): | $(BPFTOOL_OUTPUT) 91f5c27da4SBenjamin Tissoires $(Q)$(MAKE) $(submake_extras) -C $(BPFTOOL_SRC) \ 92f5c27da4SBenjamin Tissoires OUTPUT=$(BPFTOOL_OUTPUT)/ bootstrap 93f5c27da4SBenjamin Tissoiresendif 94