bbaf1ff06a
The -target option has been deprecated since clang 3.4 in 2013. Therefore, use
the preferred --target=bpf form instead. This also matches how we use --target=
in scripts/Makefile.clang.
Signed-off-by: Fangrui Song <maskray@google.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Yonghong Song <yhs@fb.com>
Acked-by: Quentin Monnet <quentin@isovalent.com>
Link: 274b6f0c87
Link: https://lore.kernel.org/bpf/20230624001856.1903733-1-maskray@google.com
1.8 KiB
SPDX-License-Identifier: GPL-2.0
OUTPUT := .output abs_out := $(abspath $(OUTPUT))
CLANG ?= clang LLC ?= llc LLVM_STRIP ?= llvm-strip
TOOLS_PATH := $(abspath ../../../../tools) BPFTOOL_SRC := $(TOOLS_PATH)/bpf/bpftool BPFTOOL_OUTPUT := $(abs_out)/bpftool DEFAULT_BPFTOOL := $(BPFTOOL_OUTPUT)/bootstrap/bpftool BPFTOOL ?= $(DEFAULT_BPFTOOL)
LIBBPF_SRC := $(TOOLS_PATH)/lib/bpf LIBBPF_OUTPUT := $(abs_out)/libbpf LIBBPF_DESTDIR := $(LIBBPF_OUTPUT) LIBBPF_INCLUDE := $(LIBBPF_DESTDIR)/include BPFOBJ := $(LIBBPF_OUTPUT)/libbpf.a
INCLUDES := -I$(OUTPUT) -I$(LIBBPF_INCLUDE) -I$(TOOLS_PATH)/include/uapi CFLAGS := -g -Wall
ifeq ($(V),1) Q = msg = else Q = @ msg = @printf ' %-8s %s%s\n' "$(1)" "$(notdir $(2))" "$(if $(3), $(3))"; MAKEFLAGS += --no-print-directory submake_extras := feature_display=0 endif
.DELETE_ON_ERROR:
.PHONY: all clean
all: iterators.lskel-little-endian.h
big: iterators.lskel-big-endian.h
clean: $(call msg,CLEAN) $(Q)rm -rf $(OUTPUT) iterators
iterators.lskel-%.h: $(OUTPUT)/%/iterators.bpf.o | $(BPFTOOL) $(call msg,GEN-SKEL,$@) $(Q)$(BPFTOOL) gen skeleton -L $< > $@
$(OUTPUT)/%/iterators.bpf.o: iterators.bpf.c $(BPFOBJ) | $(OUTPUT)
$(call msg,BPF,$@)
$(Q)mkdir -p $(@D)
$(Q)$(CLANG) -g -O2 --target=bpf -m$* $(INCLUDES)
-c $(filter %.c,$^) -o $@ &&
$(LLVM_STRIP) -g $@
$(OUTPUT) $(LIBBPF_OUTPUT) $(BPFTOOL_OUTPUT): $(call msg,MKDIR,$@) $(Q)mkdir -p $@
$(BPFOBJ): $(wildcard $(LIBBPF_SRC)/*.[ch] $(LIBBPF_SRC)/Makefile) | $(LIBBPF_OUTPUT)
$(Q)$(MAKE) $(submake_extras) -C $(LIBBPF_SRC)
OUTPUT=$(abspath $(dir $@))/ prefix=
DESTDIR=$(LIBBPF_DESTDIR) $(abspath $@) install_headers
$(DEFAULT_BPFTOOL): | $(BPFTOOL_OUTPUT) $(Q)$(MAKE) $(submake_extras) -C $(BPFTOOL_SRC) OUTPUT=$(BPFTOOL_OUTPUT)/ bootstrap