xref: /linux/tools/bpf/resolve_btfids/Makefile (revision 1f8d99de1d1b4b3764203ae02db57041475dab84) 
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
22CROSS_COMPILE =
23CFLAGS  := $(KBUILD_HOSTCFLAGS)
24LDFLAGS := $(KBUILD_HOSTLDFLAGS)
25
26OUTPUT ?= $(srctree)/tools/bpf/resolve_btfids/
27
28LIBBPF_SRC := $(srctree)/tools/lib/bpf/
29SUBCMD_SRC := $(srctree)/tools/lib/subcmd/
30
31BPFOBJ     := $(OUTPUT)/libbpf/libbpf.a
32LIBBPF_OUT := $(abspath $(dir $(BPFOBJ)))/
33SUBCMDOBJ  := $(OUTPUT)/libsubcmd/libsubcmd.a
34
35LIBBPF_DESTDIR := $(LIBBPF_OUT)
36LIBBPF_INCLUDE := $(LIBBPF_DESTDIR)include
37
38BINARY     := $(OUTPUT)/resolve_btfids
39BINARY_IN  := $(BINARY)-in.o
40
41all: $(BINARY)
42
43$(OUTPUT) $(OUTPUT)/libsubcmd $(LIBBPF_OUT):
44	$(call msg,MKDIR,,$@)
45	$(Q)mkdir -p $(@)
46
47$(SUBCMDOBJ): fixdep FORCE | $(OUTPUT)/libsubcmd
48	$(Q)$(MAKE) -C $(SUBCMD_SRC) OUTPUT=$(abspath $(dir $@))/ $(abspath $@)
49
50$(BPFOBJ): $(wildcard $(LIBBPF_SRC)/*.[ch] $(LIBBPF_SRC)/Makefile) | $(LIBBPF_OUT)
51	$(Q)$(MAKE) $(submake_extras) -C $(LIBBPF_SRC) OUTPUT=$(LIBBPF_OUT)    \
52		    DESTDIR=$(LIBBPF_DESTDIR) prefix= EXTRA_CFLAGS="$(CFLAGS)" \
53		    $(abspath $@) install_headers
54
55CFLAGS += -g \
56          -I$(srctree)/tools/include \
57          -I$(srctree)/tools/include/uapi \
58          -I$(LIBBPF_INCLUDE) \
59          -I$(SUBCMD_SRC)
60
61LIBS = -lelf -lz
62
63export srctree OUTPUT CFLAGS Q
64include $(srctree)/tools/build/Makefile.include
65
66$(BINARY_IN): $(BPFOBJ) fixdep FORCE | $(OUTPUT)
67	$(Q)$(MAKE) $(build)=resolve_btfids
68
69$(BINARY): $(BPFOBJ) $(SUBCMDOBJ) $(BINARY_IN)
70	$(call msg,LINK,$@)
71	$(Q)$(CC) $(BINARY_IN) $(LDFLAGS) -o $@ $(BPFOBJ) $(SUBCMDOBJ) $(LIBS)
72
73clean_objects := $(wildcard $(OUTPUT)/*.o                \
74                            $(OUTPUT)/.*.o.cmd           \
75                            $(OUTPUT)/.*.o.d             \
76                            $(LIBBPF_OUT)                \
77                            $(LIBBPF_DESTDIR)            \
78                            $(OUTPUT)/libsubcmd          \
79                            $(OUTPUT)/resolve_btfids)
80
81ifneq ($(clean_objects),)
82clean: fixdep-clean
83	$(call msg,CLEAN,$(BINARY))
84	$(Q)$(RM) -rf $(clean_objects)
85else
86clean:
87endif
88
89tags:
90	$(call msg,GEN,,tags)
91	$(Q)ctags -R . $(LIBBPF_SRC) $(SUBCMD_SRC)
92
93FORCE:
94
95.PHONY: all FORCE clean tags
96