diff options
Diffstat (limited to 'lib/common.mk')
| -rw-r--r-- | lib/common.mk | 143 |
1 files changed, 143 insertions, 0 deletions
diff --git a/lib/common.mk b/lib/common.mk new file mode 100644 index 0000000..b680a75 --- /dev/null +++ b/lib/common.mk @@ -0,0 +1,143 @@ +# 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: +# XDP_TARGETS and USER_TARGETS +# as a space-separated list +# +XDP_C = ${XDP_TARGETS:=.c} +XDP_OBJ = ${XDP_C:.c=.o} +BPF_SKEL_OBJ = ${BPF_SKEL_TARGETS:=.o} +BPF_SKEL_H = ${BPF_SKEL_OBJ:.bpf.o=.skel.h} +USER_C := ${USER_TARGETS:=.c} +USER_OBJ := ${USER_C:.c=.o} +TEST_C := ${TEST_TARGETS:=.c} +TEST_OBJ := ${TEST_C:.c=.o} +XDP_OBJ_INSTALL ?= $(XDP_OBJ) +MAN_FILES := $(MAN_PAGE) + +# Expect this is defined by including Makefile, but define if not +LIB_DIR ?= ../lib +LDLIBS ?= $(USER_LIBS) +LDLIBS += -lm + +include $(LIB_DIR)/defines.mk +include $(LIB_DIR)/libxdp/libxdp.mk + +# get list of objects in util +include $(LIB_DIR)/util/util.mk + +# Extend if including Makefile already added some +LIB_OBJS += $(foreach obj,$(UTIL_OBJS),$(LIB_DIR)/util/$(obj)) + +EXTRA_DEPS += +EXTRA_USER_DEPS += + +LDFLAGS+=-L$(LIBXDP_DIR) +ifeq ($(DYNAMIC_LIBXDP),1) + LDLIBS:=-lxdp $(LDLIBS) + OBJECT_LIBXDP:=$(LIBXDP_DIR)/libxdp.so.$(LIBXDP_VERSION) +else + LDLIBS:=-l:libxdp.a $(LDLIBS) + OBJECT_LIBXDP:=$(LIBXDP_DIR)/libxdp.a +endif + +# Detect submodule libbpf source file changes +ifeq ($(SYSTEM_LIBBPF),n) + LIBBPF_SOURCES := $(wildcard $(LIBBPF_DIR)/src/*.[ch]) +endif + +LIBXDP_SOURCES := $(wildcard $(LIBXDP_DIR)/*.[ch] $(LIBXDP_DIR)/*.in) + +# BPF-prog kern and userspace shares struct via header file: +KERN_USER_H ?= $(wildcard common_kern_user.h) + +CFLAGS += -I$(HEADER_DIR) -I$(LIB_DIR)/util $(ARCH_INCLUDES) +BPF_CFLAGS += -I$(HEADER_DIR) $(ARCH_INCLUDES) + +BPF_HEADERS := $(wildcard $(HEADER_DIR)/bpf/*.h) $(wildcard $(HEADER_DIR)/xdp/*.h) + +all: $(USER_TARGETS) $(XDP_OBJ) $(EXTRA_TARGETS) $(TEST_TARGETS) man + +.PHONY: clean +clean:: + $(Q)rm -f $(USER_TARGETS) $(XDP_OBJ) $(USER_OBJ) $(TEST_OBJ) $(USER_GEN) $(BPF_SKEL_H) *.ll + +.PHONY: install +install: all install_local + install -m 0755 -d $(DESTDIR)$(SBINDIR) + install -m 0755 -d $(DESTDIR)$(BPF_OBJECT_DIR) + $(if $(USER_TARGETS),install -m 0755 $(USER_TARGETS) $(DESTDIR)$(SBINDIR)) + $(if $(XDP_OBJ_INSTALL),install -m 0755 $(XDP_OBJ_INSTALL) $(DESTDIR)$(BPF_OBJECT_DIR)) + $(if $(MAN_FILES),install -m 0755 -d $(DESTDIR)$(MANDIR)/man8) + $(if $(MAN_FILES),install -m 0644 $(MAN_FILES) $(DESTDIR)$(MANDIR)/man8) + $(if $(SCRIPTS_FILES),install -m 0755 -d $(DESTDIR)$(SCRIPTSDIR)) + $(if $(SCRIPTS_FILES),install -m 0755 $(SCRIPTS_FILES) $(DESTDIR)$(SCRIPTSDIR)) + $(if $(TEST_FILE),install -m 0755 -d $(DESTDIR)$(SCRIPTSDIR)/tests/$(TOOL_NAME)) + $(if $(TEST_FILE),install -m 0644 $(TEST_FILE) $(DESTDIR)$(SCRIPTSDIR)/tests/$(TOOL_NAME)) + $(if $(TEST_FILE_DEPS),install -m 0644 $(TEST_FILE_DEPS) $(DESTDIR)$(SCRIPTSDIR)/tests/$(TOOL_NAME)) + $(if $(TEST_TARGETS),install -m 0755 $(TEST_TARGETS) $(DESTDIR)$(SCRIPTSDIR)) + +.PHONY: install_local +install_local:: + +$(OBJECT_LIBBPF): $(LIBBPF_SOURCES) + $(Q)$(MAKE) -C $(LIB_DIR) libbpf + +$(OBJECT_LIBXDP): $(LIBXDP_SOURCES) + $(Q)$(MAKE) -C $(LIBXDP_DIR) + +$(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 $@) + +ALL_EXEC_TARGETS=$(USER_TARGETS) $(TEST_TARGETS) +$(ALL_EXEC_TARGETS): %: %.c $(OBJECT_LIBBPF) $(OBJECT_LIBXDP) $(LIBMK) $(LIB_OBJS) $(KERN_USER_H) $(EXTRA_DEPS) $(EXTRA_USER_DEPS) $(BPF_SKEL_H) $(USER_EXTRA_C) + $(QUIET_CC)$(CC) -Wall $(CFLAGS) $(CPPFLAGS) $(LDFLAGS) -o $@ $(LIB_OBJS) \ + $< $(USER_EXTRA_C) $(LDLIBS) + +$(XDP_OBJ): %.o: %.c $(KERN_USER_H) $(EXTRA_DEPS) $(BPF_HEADERS) $(LIBMK) + $(QUIET_CLANG)$(CLANG) -S \ + -target $(BPF_TARGET) \ + -D __BPF_TRACING__ \ + $(BPF_CFLAGS) \ + -Wall \ + -Wno-unused-value \ + -Wno-pointer-sign \ + -Wno-compare-distinct-pointer-types \ + -Werror \ + -O2 -emit-llvm -c -g -o ${@:.o=.ll} $< + $(QUIET_LLC)$(LLC) -march=$(BPF_TARGET) -filetype=obj -o $@ ${@:.o=.ll} + +$(BPF_SKEL_H): %.skel.h: %.bpf.o + $(QUIET_GEN)$(BPFTOOL) gen skeleton $< name ${@:.skel.h=} > $@ + +.PHONY: man +ifeq ($(EMACS),) +man: ; +else +man: $(MAN_PAGE) +$(MAN_PAGE): README.org $(LIBMK) $(LIB_DIR)/export-man.el + $(QUIET_GEN)$(EMACS) -Q --batch --load "$(LIB_DIR)/export-man.el" \ + --eval "(export-man-page \"$@\" \"$<\" \"$(HAVE_FEATURES)\" \"v$(TOOLS_VERSION)\")" +endif + +.PHONY: test +ifeq ($(TEST_FILE),) +test: + @echo " No tests defined" +else +test: all + $(Q)$(TEST_DIR)/test_runner.sh $(TEST_FILE) +endif |