tools/bpf/resolve_btfids/Makefile

   1 # SPDX-License-Identifier: GPL-2.0-only
   2 include ../../scripts/Makefile.include
   3 include ../../scripts/Makefile.arch
   4
   5 srctree := $(abspath $(CURDIR)/../../../)
   6
   7 ifeq ($(V),1)
   8   Q =
   9   msg =
  10 else
  11   Q = @
  12   msg = @printf '  %-8s %s%s\n' "$(1)" "$(notdir $(2))" "$(if $(3), $(3))";
  13   MAKEFLAGS=--no-print-directory
  14 endif
  15
  16 # always use the host compiler
  17 AR       = $(HOSTAR)
  18 CC       = $(HOSTCC)
  19 LD       = $(HOSTLD)
  20 ARCH     = $(HOSTARCH)
  21 RM      ?= rm
  22
  23 OUTPUT ?= $(srctree)/tools/bpf/resolve_btfids/
  24
  25 LIBBPF_SRC := $(srctree)/tools/lib/bpf/
  26 SUBCMD_SRC := $(srctree)/tools/lib/subcmd/
  27
  28 BPFOBJ     := $(OUTPUT)/libbpf/libbpf.a
  29 SUBCMDOBJ  := $(OUTPUT)/libsubcmd/libsubcmd.a
  30
  31 BINARY     := $(OUTPUT)/resolve_btfids
  32 BINARY_IN  := $(BINARY)-in.o
  33
  34 all: $(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 $@)
  45
  46 CFLAGS := -g \
  47           -I$(srctree)/tools/include \
  48           -I$(srctree)/tools/include/uapi \
  49           -I$(LIBBPF_SRC) \
  50           -I$(SUBCMD_SRC)
  51
  52 LIBS = -lelf -lz
  53
  54 export srctree OUTPUT CFLAGS Q
  55 include $(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
  64 clean_objects := $(wildcard $(OUTPUT)/*.o                \
  65                             $(OUTPUT)/.*.o.cmd           \
  66                             $(OUTPUT)/.*.o.d             \
  67                             $(OUTPUT)/libbpf             \
  68                             $(OUTPUT)/libsubcmd          \
  69                             $(OUTPUT)/resolve_btfids)
  70
  71 ifneq ($(clean_objects),)
  72 clean: fixdep-clean
  73         $(call msg,CLEAN,$(BINARY))
  74         $(Q)$(RM) -rf $(clean_objects)
  75 else
  76 clean:
  77 endif
  78
  79 tags:
  80         $(call msg,GEN,,tags)
  81         $(Q)ctags -R . $(LIBBPF_SRC) $(SUBCMD_SRC)
  82
  83 FORCE:
  84
  85 .PHONY: all FORCE clean tags