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

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