1# SPDX-License-Identifier: GPL-2.0-only
2include ../../scripts/Makefile.include
3
4ifeq ($(srctree),)
5srctree := $(patsubst %/,%,$(dir $(CURDIR)))
6srctree := $(patsubst %/,%,$(dir $(srctree)))
7srctree := $(patsubst %/,%,$(dir $(srctree)))
8endif
9
10ifeq ($(V),1)
11  Q =
12  msg =
13else
14  Q = @
15  msg = @printf '  %-8s %s%s\n' "$(1)" "$(notdir $(2))" "$(if $(3), $(3))";
16  MAKEFLAGS=--no-print-directory
17endif
18
19OUTPUT ?= $(srctree)/tools/bpf/resolve_btfids/
20
21LIBBPF_SRC := $(srctree)/tools/lib/bpf/
22SUBCMD_SRC := $(srctree)/tools/lib/subcmd/
23
24BPFOBJ     := $(OUTPUT)/libbpf.a
25SUBCMDOBJ  := $(OUTPUT)/libsubcmd.a
26
27BINARY     := $(OUTPUT)/resolve_btfids
28BINARY_IN  := $(BINARY)-in.o
29
30all: $(BINARY)
31
32$(OUTPUT):
33	$(call msg,MKDIR,,$@)
34	$(Q)mkdir -p $(OUTPUT)
35
36$(SUBCMDOBJ): fixdep FORCE
37	$(Q)$(MAKE) -C $(SUBCMD_SRC) OUTPUT=$(OUTPUT)
38
39$(BPFOBJ): $(wildcard $(LIBBPF_SRC)/*.[ch] $(LIBBPF_SRC)/Makefile) | $(OUTPUT)
40	$(Q)$(MAKE) $(submake_extras) -C $(LIBBPF_SRC)  OUTPUT=$(abspath $(dir $@))/ $(abspath $@)
41
42CFLAGS := -g \
43          -I$(srctree)/tools/include \
44          -I$(srctree)/tools/include/uapi \
45          -I$(LIBBPF_SRC) \
46          -I$(SUBCMD_SRC)
47
48LIBS = -lelf -lz
49
50export srctree OUTPUT CFLAGS Q
51include $(srctree)/tools/build/Makefile.include
52
53$(BINARY_IN): fixdep FORCE
54	$(Q)$(MAKE) $(build)=resolve_btfids
55
56$(BINARY): $(BPFOBJ) $(SUBCMDOBJ) $(BINARY_IN)
57	$(call msg,LINK,$@)
58	$(Q)$(CC) $(BINARY_IN) $(LDFLAGS) -o $@ $(BPFOBJ) $(SUBCMDOBJ) $(LIBS)
59
60libsubcmd-clean:
61	$(Q)$(MAKE) -C $(SUBCMD_SRC) OUTPUT=$(OUTPUT) clean
62
63libbpf-clean:
64	$(Q)$(MAKE) -C $(LIBBPF_SRC) OUTPUT=$(OUTPUT) clean
65
66clean: libsubcmd-clean libbpf-clean fixdep-clean
67	$(call msg,CLEAN,$(BINARY))
68	$(Q)$(RM) -f $(BINARY); \
69	find $(if $(OUTPUT),$(OUTPUT),.) -name \*.o -or -name \*.o.cmd -or -name \*.o.d | xargs $(RM)
70
71tags:
72	$(call msg,GEN,,tags)
73	$(Q)ctags -R . $(LIBBPF_SRC) $(SUBCMD_SRC)
74
75FORCE:
76
77.PHONY: all FORCE clean tags
78