1 # SPDX-License-Identifier: GPL-2.0 1 # SPDX-License-Identifier: GPL-2.0
2 OUTPUT := .output 2 OUTPUT := .output
3 abs_out := $(abspath $(OUTPUT)) <<
4 <<
5 CLANG ?= clang 3 CLANG ?= clang
6 LLC ?= llc 4 LLC ?= llc
7 LLVM_STRIP ?= llvm-strip 5 LLVM_STRIP ?= llvm-strip
8 !! 6 DEFAULT_BPFTOOL := $(OUTPUT)/sbin/bpftool
9 TOOLS_PATH := $(abspath ../../../../tools) <<
10 BPFTOOL_SRC := $(TOOLS_PATH)/bpf/bpftool <<
11 BPFTOOL_OUTPUT := $(abs_out)/bpftool <<
12 DEFAULT_BPFTOOL := $(BPFTOOL_OUTPUT)/bootstrap <<
13 BPFTOOL ?= $(DEFAULT_BPFTOOL) 7 BPFTOOL ?= $(DEFAULT_BPFTOOL)
14 !! 8 LIBBPF_SRC := $(abspath ../../../../tools/lib/bpf)
15 LIBBPF_SRC := $(TOOLS_PATH)/lib/bpf !! 9 BPFOBJ := $(OUTPUT)/libbpf.a
16 LIBBPF_OUTPUT := $(abs_out)/libbpf !! 10 BPF_INCLUDE := $(OUTPUT)
17 LIBBPF_DESTDIR := $(LIBBPF_OUTPUT) !! 11 INCLUDES := -I$(OUTPUT) -I$(BPF_INCLUDE) -I$(abspath ../../../../tools/lib) \
18 LIBBPF_INCLUDE := $(LIBBPF_DESTDIR)/include !! 12 -I$(abspath ../../../../tools/include/uapi)
19 BPFOBJ := $(LIBBPF_OUTPUT)/libbpf.a <<
20 <<
21 INCLUDES := -I$(OUTPUT) -I$(LIBBPF_INCLUDE) -I <<
22 CFLAGS := -g -Wall 13 CFLAGS := -g -Wall
23 14
>> 15 abs_out := $(abspath $(OUTPUT))
24 ifeq ($(V),1) 16 ifeq ($(V),1)
25 Q = 17 Q =
26 msg = 18 msg =
27 else 19 else
28 Q = @ 20 Q = @
29 msg = @printf ' %-8s %s%s\n' "$(1)" "$(notdir 21 msg = @printf ' %-8s %s%s\n' "$(1)" "$(notdir $(2))" "$(if $(3), $(3))";
30 MAKEFLAGS += --no-print-directory 22 MAKEFLAGS += --no-print-directory
31 submake_extras := feature_display=0 23 submake_extras := feature_display=0
32 endif 24 endif
33 25
34 .DELETE_ON_ERROR: 26 .DELETE_ON_ERROR:
35 27
36 .PHONY: all clean 28 .PHONY: all clean
37 29
38 all: iterators.lskel-little-endian.h !! 30 all: iterators.skel.h
39 <<
40 big: iterators.lskel-big-endian.h <<
41 31
42 clean: 32 clean:
43 $(call msg,CLEAN) 33 $(call msg,CLEAN)
44 $(Q)rm -rf $(OUTPUT) iterators 34 $(Q)rm -rf $(OUTPUT) iterators
45 35
46 iterators.lskel-%.h: $(OUTPUT)/%/iterators.bpf !! 36 iterators.skel.h: $(OUTPUT)/iterators.bpf.o | $(BPFTOOL)
47 $(call msg,GEN-SKEL,$@) 37 $(call msg,GEN-SKEL,$@)
48 $(Q)$(BPFTOOL) gen skeleton -L $< > $@ !! 38 $(Q)$(BPFTOOL) gen skeleton $< > $@
>> 39
49 40
50 $(OUTPUT)/%/iterators.bpf.o: iterators.bpf.c $ !! 41 $(OUTPUT)/iterators.bpf.o: iterators.bpf.c $(BPFOBJ) | $(OUTPUT)
51 $(call msg,BPF,$@) 42 $(call msg,BPF,$@)
52 $(Q)mkdir -p $(@D) !! 43 $(Q)$(CLANG) -g -O2 -target bpf $(INCLUDES) \
53 $(Q)$(CLANG) -g -O2 --target=bpf -m$* <<
54 -c $(filter %.c,$^) -o $@ && 44 -c $(filter %.c,$^) -o $@ && \
55 $(LLVM_STRIP) -g $@ 45 $(LLVM_STRIP) -g $@
56 46
57 $(OUTPUT) $(LIBBPF_OUTPUT) $(BPFTOOL_OUTPUT): !! 47 $(OUTPUT):
58 $(call msg,MKDIR,$@) 48 $(call msg,MKDIR,$@)
59 $(Q)mkdir -p $@ !! 49 $(Q)mkdir -p $(OUTPUT)
60 50
61 $(BPFOBJ): $(wildcard $(LIBBPF_SRC)/*.[ch] $(L !! 51 $(BPFOBJ): $(wildcard $(LIBBPF_SRC)/*.[ch] $(LIBBPF_SRC)/Makefile) | $(OUTPUT)
62 $(Q)$(MAKE) $(submake_extras) -C $(LIB 52 $(Q)$(MAKE) $(submake_extras) -C $(LIBBPF_SRC) \
63 OUTPUT=$(abspath $(dir $@) !! 53 OUTPUT=$(abspath $(dir $@))/ $(abspath $@)
64 DESTDIR=$(LIBBPF_DESTDIR) <<
65 54
66 $(DEFAULT_BPFTOOL): | $(BPFTOOL_OUTPUT) !! 55 $(DEFAULT_BPFTOOL):
67 $(Q)$(MAKE) $(submake_extras) -C $(BPF !! 56 $(Q)$(MAKE) $(submake_extras) -C ../../../../tools/bpf/bpftool \
>> 57 prefix= OUTPUT=$(abs_out)/ DESTDIR=$(abs_out) install
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