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1# SPDX-License-Identifier: GPL-2.0-only2include ../../scripts/Makefile.include3include ../../scripts/Makefile.arch4 5srctree := $(abspath $(CURDIR)/../../../)6 7ifeq ($(V),1)8 Q =9 msg =10else11 Q = @12 ifeq ($(silent),1)13 msg =14 else15 msg = @printf ' %-8s %s%s\n' "$(1)" "$(notdir $(2))" "$(if $(3), $(3))";16 endif17 MAKEFLAGS=--no-print-directory18endif19 20# Overrides for the prepare step libraries.21HOST_OVERRIDES := AR="$(HOSTAR)" CC="$(HOSTCC)" LD="$(HOSTLD)" ARCH="$(HOSTARCH)" \22 CROSS_COMPILE="" EXTRA_CFLAGS="$(HOSTCFLAGS)"23 24RM ?= rm25HOSTCC ?= gcc26HOSTLD ?= ld27HOSTAR ?= ar28CROSS_COMPILE =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.a36LIBBPF_OUT := $(abspath $(dir $(BPFOBJ)))/37SUBCMDOBJ := $(OUTPUT)/libsubcmd/libsubcmd.a38SUBCMD_OUT := $(abspath $(dir $(SUBCMDOBJ)))/39 40LIBBPF_DESTDIR := $(LIBBPF_OUT)41LIBBPF_INCLUDE := $(LIBBPF_DESTDIR)include42 43SUBCMD_DESTDIR := $(SUBCMD_OUT)44SUBCMD_INCLUDE := $(SUBCMD_DESTDIR)include45 46BINARY := $(OUTPUT)/resolve_btfids47BINARY_IN := $(BINARY)-in.o48 49all: $(BINARY)50 51prepare: $(BPFOBJ) $(SUBCMDOBJ)52 53$(OUTPUT) $(OUTPUT)/libsubcmd $(LIBBPF_OUT):54 $(call msg,MKDIR,,$@)55 $(Q)mkdir -p $(@)56 57$(SUBCMDOBJ): fixdep FORCE | $(OUTPUT)/libsubcmd58 $(Q)$(MAKE) -C $(SUBCMD_SRC) OUTPUT=$(SUBCMD_OUT) \59 DESTDIR=$(SUBCMD_DESTDIR) $(HOST_OVERRIDES) prefix= subdir= \60 $(abspath $@) install_headers61 62$(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_headers66 67LIBELF_FLAGS := $(shell $(HOSTPKG_CONFIG) libelf --cflags 2>/dev/null)68LIBELF_LIBS := $(shell $(HOSTPKG_CONFIG) libelf --libs 2>/dev/null || echo -lelf)69 70HOSTCFLAGS_resolve_btfids += -g \71 -I$(srctree)/tools/include \72 -I$(srctree)/tools/include/uapi \73 -I$(LIBBPF_INCLUDE) \74 -I$(SUBCMD_INCLUDE) \75 $(LIBELF_FLAGS)76 77LIBS = $(LIBELF_LIBS) -lz78 79export srctree OUTPUT HOSTCFLAGS_resolve_btfids Q HOSTCC HOSTLD HOSTAR80include $(srctree)/tools/build/Makefile.include81 82$(BINARY_IN): fixdep FORCE prepare | $(OUTPUT)83 $(Q)$(MAKE) $(build)=resolve_btfids84 85$(BINARY): $(BPFOBJ) $(SUBCMDOBJ) $(BINARY_IN)86 $(call msg,LINK,$@)87 $(Q)$(HOSTCC) $(BINARY_IN) $(KBUILD_HOSTLDFLAGS) -o $@ $(BPFOBJ) $(SUBCMDOBJ) $(LIBS)88 89clean_objects := $(wildcard $(OUTPUT)/*.o \90 $(OUTPUT)/.*.o.cmd \91 $(OUTPUT)/.*.o.d \92 $(LIBBPF_OUT) \93 $(LIBBPF_DESTDIR) \94 $(SUBCMD_OUT) \95 $(SUBCMD_DESTDIR) \96 $(OUTPUT)/resolve_btfids)97 98ifneq ($(clean_objects),)99clean: fixdep-clean100 $(call msg,CLEAN,$(BINARY))101 $(Q)$(RM) -rf $(clean_objects)102else103clean:104endif105 106tags:107 $(call msg,GEN,,tags)108 $(Q)ctags -R . $(LIBBPF_SRC) $(SUBCMD_SRC)109 110FORCE:111 112.PHONY: all FORCE clean tags prepare113