LXR linux/tools/bpf/resolve

   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
  29SUBCMDOBJ  := $(OUTPUT)/libsubcmd/libsubcmd.a
  30
  31BINARY     := $(OUTPUT)/resolve_btfids
  32BINARY_IN  := $(BINARY)-in.o
  33
  34all: $(BINARY)
  35
  36$(OUTPUT) $(OUTPUT)/libbpf $(OUTPUT)/libsubcmd:
  37        $(call msg,MKDIR,,$@)
  38        $(Q)mkdir -p $(@)
  39
  40$(SUBCMDOBJ): fixdep FORCE | $(OUTPUT)/libsubcmd
  41        $(Q)$(MAKE) -C $(SUBCMD_SRC) OUTPUT=$(abspath $(dir $@))/ $(abspath $@)
  42
  43$(BPFOBJ): $(wildcard $(LIBBPF_SRC)/*.[ch] $(LIBBPF_SRC)/Makefile) | $(OUTPUT)/libbpf
  44        $(Q)$(MAKE) $(submake_extras) -C $(LIBBPF_SRC)  OUTPUT=$(abspath $(dir $@))/ $(abspath $@)
  45
  46CFLAGS := -g \
  47          -I$(srctree)/tools/include \
  48          -I$(srctree)/tools/include/uapi \
  49          -I$(LIBBPF_SRC) \
  50          -I$(SUBCMD_SRC)
  51
  52LIBS = -lelf -lz
  53
  54export srctree OUTPUT CFLAGS Q
  55include $(srctree)/tools/build/Makefile.include
  56
  57$(BINARY_IN): fixdep FORCE | $(OUTPUT)
  58        $(Q)$(MAKE) $(build)=resolve_btfids
  59
  60$(BINARY): $(BPFOBJ) $(SUBCMDOBJ) $(BINARY_IN)
  61        $(call msg,LINK,$@)
  62        $(Q)$(CC) $(BINARY_IN) $(LDFLAGS) -o $@ $(BPFOBJ) $(SUBCMDOBJ) $(LIBS)
  63
  64clean_objects := $(wildcard $(OUTPUT)/*.o                \
  65                            $(OUTPUT)/.*.o.cmd           \
  66                            $(OUTPUT)/.*.o.d             \
  67                            $(OUTPUT)/libbpf             \
  68                            $(OUTPUT)/libsubcmd          \
  69                            $(OUTPUT)/resolve_btfids)
  70
  71ifneq ($(clean_objects),)
  72clean: fixdep-clean
  73        $(call msg,CLEAN,$(BINARY))
  74        $(Q)$(RM) -rf $(clean_objects)
  75else
  76clean:
  77endif
  78
  79tags:
  80        $(call msg,GEN,,tags)
  81        $(Q)ctags -R . $(LIBBPF_SRC) $(SUBCMD_SRC)
  82
  83FORCE:
  84
  85.PHONY: all FORCE clean tags
  86