xref: /linux/tools/bpf/resolve_btfids/Makefile (revision 7681a4f58fb9c338d6dfe1181607f84c793d77de) 
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  ifeq ($(silent),1)
13    msg =
14  else
15    msg = @printf '  %-8s %s%s\n' "$(1)" "$(notdir $(2))" "$(if $(3), $(3))";
16  endif
17  MAKEFLAGS=--no-print-directory
18endif
19
20# always use the host compiler
21AR       = $(HOSTAR)
22CC       = $(HOSTCC)
23LD       = $(HOSTLD)
24ARCH     = $(HOSTARCH)
25RM      ?= rm
26CROSS_COMPILE =
27CFLAGS  := $(KBUILD_HOSTCFLAGS)
28LDFLAGS := $(KBUILD_HOSTLDFLAGS)
29
30OUTPUT ?= $(srctree)/tools/bpf/resolve_btfids/
31
32LIBBPF_SRC := $(srctree)/tools/lib/bpf/
33SUBCMD_SRC := $(srctree)/tools/lib/subcmd/
34
35BPFOBJ     := $(OUTPUT)/libbpf/libbpf.a
36LIBBPF_OUT := $(abspath $(dir $(BPFOBJ)))/
37SUBCMDOBJ  := $(OUTPUT)/libsubcmd/libsubcmd.a
38
39LIBBPF_DESTDIR := $(LIBBPF_OUT)
40LIBBPF_INCLUDE := $(LIBBPF_DESTDIR)include
41
42BINARY     := $(OUTPUT)/resolve_btfids
43BINARY_IN  := $(BINARY)-in.o
44
45all: $(BINARY)
46
47$(OUTPUT) $(OUTPUT)/libsubcmd $(LIBBPF_OUT):
48	$(call msg,MKDIR,,$@)
49	$(Q)mkdir -p $(@)
50
51$(SUBCMDOBJ): fixdep FORCE | $(OUTPUT)/libsubcmd
52	$(Q)$(MAKE) -C $(SUBCMD_SRC) OUTPUT=$(abspath $(dir $@))/ $(abspath $@)
53
54$(BPFOBJ): $(wildcard $(LIBBPF_SRC)/*.[ch] $(LIBBPF_SRC)/Makefile) | $(LIBBPF_OUT)
55	$(Q)$(MAKE) $(submake_extras) -C $(LIBBPF_SRC) OUTPUT=$(LIBBPF_OUT)    \
56		    DESTDIR=$(LIBBPF_DESTDIR) prefix= EXTRA_CFLAGS="$(CFLAGS)" \
57		    $(abspath $@) install_headers
58
59LIBELF_FLAGS := $(shell $(HOSTPKG_CONFIG) libelf --cflags 2>/dev/null)
60LIBELF_LIBS  := $(shell $(HOSTPKG_CONFIG) libelf --libs 2>/dev/null || echo -lelf)
61
62CFLAGS += -g \
63          -I$(srctree)/tools/include \
64          -I$(srctree)/tools/include/uapi \
65          -I$(LIBBPF_INCLUDE) \
66          -I$(SUBCMD_SRC) \
67          $(LIBELF_FLAGS)
68
69LIBS = $(LIBELF_LIBS) -lz
70
71export srctree OUTPUT CFLAGS Q
72include $(srctree)/tools/build/Makefile.include
73
74$(BINARY_IN): $(BPFOBJ) fixdep FORCE | $(OUTPUT)
75	$(Q)$(MAKE) $(build)=resolve_btfids
76
77$(BINARY): $(BPFOBJ) $(SUBCMDOBJ) $(BINARY_IN)
78	$(call msg,LINK,$@)
79	$(Q)$(CC) $(BINARY_IN) $(LDFLAGS) -o $@ $(BPFOBJ) $(SUBCMDOBJ) $(LIBS)
80
81clean_objects := $(wildcard $(OUTPUT)/*.o                \
82                            $(OUTPUT)/.*.o.cmd           \
83                            $(OUTPUT)/.*.o.d             \
84                            $(LIBBPF_OUT)                \
85                            $(LIBBPF_DESTDIR)            \
86                            $(OUTPUT)/libsubcmd          \
87                            $(OUTPUT)/resolve_btfids)
88
89ifneq ($(clean_objects),)
90clean: fixdep-clean
91	$(call msg,CLEAN,$(BINARY))
92	$(Q)$(RM) -rf $(clean_objects)
93else
94clean:
95endif
96
97tags:
98	$(call msg,GEN,,tags)
99	$(Q)ctags -R . $(LIBBPF_SRC) $(SUBCMD_SRC)
100
101FORCE:
102
103.PHONY: all FORCE clean tags
104