mirror of
https://github.com/xdp-project/bpf-examples.git
synced 2024-05-06 15:54:53 +00:00
106 lines
3.2 KiB
Makefile
106 lines
3.2 KiB
Makefile
# Common Makefile parts for BPF-building with libbpf
|
|
# --------------------------------------------------
|
|
# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
|
|
#
|
|
# This file should be included from your Makefile like:
|
|
# LIB_DIR = ../lib/
|
|
# include $(LIB_DIR)/common.mk
|
|
#
|
|
# It is expected that you define the variables:
|
|
# BPF_TARGETS and USER_TARGETS
|
|
# as a space-separated list
|
|
#
|
|
BPF_C = ${BPF_TARGETS:=.c}
|
|
BPF_OBJ = ${BPF_C:.c=.o}
|
|
BPF_SKEL = ${BPF_SKEL_OBJ:.o=.skel.h}
|
|
USER_C := ${USER_TARGETS:=.c}
|
|
USER_OBJ := ${USER_C:.c=.o}
|
|
BPF_OBJ_INSTALL ?= $(BPF_OBJ)
|
|
|
|
# Expect this is defined by including Makefile, but define if not
|
|
LIB_DIR ?= ../lib
|
|
LDLIBS ?= $(USER_LIBS)
|
|
|
|
# get list of objects in util
|
|
include $(LIB_DIR)/util/util.mk
|
|
|
|
include $(LIB_DIR)/defines.mk
|
|
|
|
# Extend if including Makefile already added some
|
|
LIB_OBJS += $(foreach obj,$(UTIL_OBJS),$(LIB_DIR)/util/$(obj))
|
|
|
|
EXTRA_DEPS +=
|
|
EXTRA_USER_DEPS +=
|
|
|
|
# Detect submodule libbpf source file changes
|
|
ifeq ($(SYSTEM_LIBBPF),n)
|
|
LIBBPF_SOURCES := $(wildcard $(LIBBPF_DIR)/src/*.[ch])
|
|
endif
|
|
|
|
# The BPF tracing header (/usr/include/bpf/bpf_tracing.h) need to know
|
|
# CPU architecture due to PT_REGS_PARM resolution of ASM call convention
|
|
#
|
|
ARCH := $(shell uname -m | sed 's/x86_64/x86/' | sed 's/aarch64/arm64/' | sed 's/ppc64le/powerpc/' | sed 's/mips.*/mips/')
|
|
|
|
BPF_CFLAGS += -D__TARGET_ARCH_$(ARCH)
|
|
|
|
# BPF-prog kern and userspace shares struct via header file:
|
|
KERN_USER_H ?= $(wildcard common_kern_user.h)
|
|
|
|
CFLAGS += -I$(INCLUDE_DIR) -I$(HEADER_DIR) -I$(LIB_DIR)/util $(EXTRA_CFLAGS)
|
|
BPF_CFLAGS += -I$(INCLUDE_DIR) -I$(HEADER_DIR) $(EXTRA_CFLAGS)
|
|
|
|
BPF_HEADERS := $(wildcard $(HEADER_DIR)/*/*.h) $(wildcard $(INCLUDE_DIR)/*/*.h)
|
|
|
|
all: $(USER_TARGETS) $(BPF_OBJ) $(EXTRA_TARGETS) $(BPF_SKEL)
|
|
|
|
.PHONY: clean
|
|
clean::
|
|
$(Q)rm -f $(USER_TARGETS) $(BPF_OBJ) $(USER_OBJ) $(USER_GEN) $(USER_TARGETS_OBJS) *.ll
|
|
|
|
$(OBJECT_LIBBPF): $(LIBBPF_SOURCES)
|
|
$(Q)$(MAKE) -C $(LIB_DIR) libbpf
|
|
|
|
$(CONFIGMK):
|
|
$(Q)$(MAKE) -C $(LIB_DIR)/.. config.mk
|
|
|
|
# Create expansions for dependencies
|
|
LIB_H := ${LIB_OBJS:.o=.h}
|
|
|
|
# Detect if any of common obj changed and create dependency on .h-files
|
|
$(LIB_OBJS): %.o: %.c %.h $(LIB_H)
|
|
$(Q)$(MAKE) -C $(dir $@) $(notdir $@)
|
|
|
|
# Allows including Makefile to define USER_TARGETS_OBJS to compile and link with
|
|
$(USER_TARGETS_OBJS): %.o: %.c %.h $(USER_TARGETS_OBJS_DEPS)
|
|
$(QUIET_CC)$(CC) $(CFLAGS) -Wall -c -o $@ $<
|
|
|
|
$(USER_TARGETS): %: %.c $(OBJECT_LIBBPF) $(OBJECT_LIBXDP) $(LIBMK) $(LIB_OBJS) $(KERN_USER_H) $(EXTRA_DEPS) $(EXTRA_USER_DEPS) $(BPF_SKEL) $(USER_TARGETS_OBJS)
|
|
$(QUIET_CC)$(CC) -Wall $(CFLAGS) $(LDFLAGS) -o $@ $(LIB_OBJS) $(USER_TARGETS_OBJS) \
|
|
$< $(LDLIBS)
|
|
|
|
$(BPF_OBJ): %.o: %.c $(KERN_USER_H) $(EXTRA_DEPS) $(BPF_HEADERS) $(LIBMK)
|
|
$(QUIET_CLANG)$(CLANG) -S \
|
|
-target bpf \
|
|
-D __BPF_TRACING__ \
|
|
$(BPF_CFLAGS) \
|
|
-Wall \
|
|
-Wno-unused-value \
|
|
-Wno-pointer-sign \
|
|
-Wno-compare-distinct-pointer-types \
|
|
-O2 -emit-llvm -c -g -o ${@:.o=.ll} $<
|
|
$(QUIET_LLC)$(LLC) -march=bpf -filetype=obj -o $@ ${@:.o=.ll}
|
|
|
|
$(BPF_SKEL): %.skel.h: %.o
|
|
$(QUIET_GEN)$(BPFTOOL) gen skeleton ${@:.skel.h=.o} > $@
|
|
|
|
|
|
.PHONY: test
|
|
ifeq ($(TEST_FILE),)
|
|
test:
|
|
@echo " No tests defined"
|
|
else
|
|
test: all
|
|
$(Q)$(TEST_DIR)/test_runner.sh $(TEST_FILE)
|
|
endif
|