1 # SPDX-License-Identifier: GPL-2.0-only
2 include ../../scripts/Makefile.include
3 include ../../scripts/Makefile.arch
5 srctree := $(abspath $(CURDIR)/../../../)
15 msg = @printf ' %-8s %s%s\n' "$(1)" "$(notdir $(2))" "$(if $(3), $(3))";
17 MAKEFLAGS=--no-print-directory
20 # Overrides for the prepare step libraries.
21 HOST_OVERRIDES := AR="$(HOSTAR)" CC="$(HOSTCC)" LD="$(HOSTLD)" ARCH="$(HOSTARCH)" \
22 CROSS_COMPILE="" EXTRA_CFLAGS="$(HOSTCFLAGS)"
30 OUTPUT ?= $(srctree)/tools/bpf/resolve_btfids/
32 LIBBPF_SRC := $(srctree)/tools/lib/bpf/
33 SUBCMD_SRC := $(srctree)/tools/lib/subcmd/
35 BPFOBJ := $(OUTPUT)/libbpf/libbpf.a
36 LIBBPF_OUT := $(abspath $(dir $(BPFOBJ)))/
37 SUBCMDOBJ := $(OUTPUT)/libsubcmd/libsubcmd.a
38 SUBCMD_OUT := $(abspath $(dir $(SUBCMDOBJ)))/
40 LIBBPF_DESTDIR := $(LIBBPF_OUT)
41 LIBBPF_INCLUDE := $(LIBBPF_DESTDIR)include
43 SUBCMD_DESTDIR := $(SUBCMD_OUT)
44 SUBCMD_INCLUDE := $(SUBCMD_DESTDIR)include
46 BINARY := $(OUTPUT)/resolve_btfids
47 BINARY_IN := $(BINARY)-in.o
51 prepare: $(BPFOBJ) $(SUBCMDOBJ)
53 $(OUTPUT) $(OUTPUT)/libsubcmd $(LIBBPF_OUT):
57 $(SUBCMDOBJ): fixdep FORCE | $(OUTPUT)/libsubcmd
58 $(Q)$(MAKE) -C $(SUBCMD_SRC) OUTPUT=$(SUBCMD_OUT) \
59 DESTDIR=$(SUBCMD_DESTDIR) $(HOST_OVERRIDES) prefix= subdir= \
60 $(abspath $@) install_headers
62 $(BPFOBJ): $(wildcard $(LIBBPF_SRC)/*.[ch] $(LIBBPF_SRC)/Makefile) | $(LIBBPF_OUT)
63 $(Q)$(MAKE) $(submake_extras) -C $(LIBBPF_SRC) OUTPUT=$(LIBBPF_OUT) \
64 DESTDIR=$(LIBBPF_DESTDIR) $(HOST_OVERRIDES) prefix= subdir= \
65 $(abspath $@) install_headers
67 LIBELF_FLAGS := $(shell $(HOSTPKG_CONFIG) libelf --cflags 2>/dev/null)
68 LIBELF_LIBS := $(shell $(HOSTPKG_CONFIG) libelf --libs 2>/dev/null || echo -lelf)
70 HOSTCFLAGS_resolve_btfids += -g \
71 -I$(srctree)/tools/include \
72 -I$(srctree)/tools/include/uapi \
77 LIBS = $(LIBELF_LIBS) -lz
79 export srctree OUTPUT HOSTCFLAGS_resolve_btfids Q HOSTCC HOSTLD HOSTAR
80 include $(srctree)/tools/build/Makefile.include
82 $(BINARY_IN): fixdep FORCE prepare | $(OUTPUT)
83 $(Q)$(MAKE) $(build)=resolve_btfids
85 $(BINARY): $(BPFOBJ) $(SUBCMDOBJ) $(BINARY_IN)
87 $(Q)$(HOSTCC) $(BINARY_IN) $(KBUILD_HOSTLDFLAGS) -o $@ $(BPFOBJ) $(SUBCMDOBJ) $(LIBS)
89 clean_objects := $(wildcard $(OUTPUT)/*.o \
96 $(OUTPUT)/resolve_btfids)
98 ifneq ($(clean_objects),)
100 $(call msg,CLEAN,$(BINARY))
101 $(Q)$(RM) -rf $(clean_objects)
107 $(call msg,GEN,,tags)
108 $(Q)ctags -R . $(LIBBPF_SRC) $(SUBCMD_SRC)
112 .PHONY: all FORCE clean tags prepare