xref: /linux/tools/bpf/resolve_btfids/Makefile (revision 0b46b755) 
1# SPDX-License-Identifier: GPL-2.0-only
2include ../../scripts/Makefile.include
3include ../../scripts/Makefile.arch
4
5srctree := $(abspath $(CURDIR)/../../../)
6
7ifeq ($(V),1)
8  Q =
9  msg =
10else
11  Q = @
12  msg = @printf '  %-8s %s%s\n' "$(1)" "$(notdir $(2))" "$(if $(3), $(3))";
13  MAKEFLAGS=--no-print-directory
14endif
15
16# always use the host compiler
17AR       = $(HOSTAR)
18CC       = $(HOSTCC)
19LD       = $(HOSTLD)
20ARCH     = $(HOSTARCH)
21RM      ?= rm
22
23OUTPUT ?= $(srctree)/tools/bpf/resolve_btfids/
24
25LIBBPF_SRC := $(srctree)/tools/lib/bpf/
26SUBCMD_SRC := $(srctree)/tools/lib/subcmd/
27
28BPFOBJ     := $(OUTPUT)/libbpf/libbpf.a
29LIBBPF_OUT := $(abspath $(dir $(BPFOBJ)))/
30SUBCMDOBJ  := $(OUTPUT)/libsubcmd/libsubcmd.a
31
32BINARY     := $(OUTPUT)/resolve_btfids
33BINARY_IN  := $(BINARY)-in.o
34
35all: $(BINARY)
36
37$(OUTPUT) $(OUTPUT)/libbpf $(OUTPUT)/libsubcmd:
38	$(call msg,MKDIR,,$@)
39	$(Q)mkdir -p $(@)
40
41$(SUBCMDOBJ): fixdep FORCE | $(OUTPUT)/libsubcmd
42	$(Q)$(MAKE) -C $(SUBCMD_SRC) OUTPUT=$(abspath $(dir $@))/ $(abspath $@)
43
44$(BPFOBJ): $(wildcard $(LIBBPF_SRC)/*.[ch] $(LIBBPF_SRC)/Makefile) | $(OUTPUT)/libbpf
45	$(Q)$(MAKE) $(submake_extras) -C $(LIBBPF_SRC)  OUTPUT=$(LIBBPF_OUT) $(abspath $@)
46
47CFLAGS := -g \
48          -I$(srctree)/tools/include \
49          -I$(srctree)/tools/include/uapi \
50          -I$(LIBBPF_OUT) \
51          -I$(LIBBPF_SRC) \
52          -I$(SUBCMD_SRC)
53
54LIBS = -lelf -lz
55
56export srctree OUTPUT CFLAGS Q
57include $(srctree)/tools/build/Makefile.include
58
59$(BINARY_IN): $(BPFOBJ) fixdep FORCE | $(OUTPUT)
60	$(Q)$(MAKE) $(build)=resolve_btfids
61
62$(BINARY): $(BPFOBJ) $(SUBCMDOBJ) $(BINARY_IN)
63	$(call msg,LINK,$@)
64	$(Q)$(CC) $(BINARY_IN) $(LDFLAGS) -o $@ $(BPFOBJ) $(SUBCMDOBJ) $(LIBS)
65
66clean_objects := $(wildcard $(OUTPUT)/*.o                \
67                            $(OUTPUT)/.*.o.cmd           \
68                            $(OUTPUT)/.*.o.d             \
69                            $(OUTPUT)/libbpf             \
70                            $(OUTPUT)/libsubcmd          \
71                            $(OUTPUT)/resolve_btfids)
72
73ifneq ($(clean_objects),)
74clean: fixdep-clean
75	$(call msg,CLEAN,$(BINARY))
76	$(Q)$(RM) -rf $(clean_objects)
77else
78clean:
79endif
80
81tags:
82	$(call msg,GEN,,tags)
83	$(Q)ctags -R . $(LIBBPF_SRC) $(SUBCMD_SRC)
84
85FORCE:
86
87.PHONY: all FORCE clean tags
88