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