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 ifeq ($(srctree),)
   6 srctree := $(patsubst %/,%,$(dir $(CURDIR)))
   7 srctree := $(patsubst %/,%,$(dir $(srctree)))
   8 srctree := $(patsubst %/,%,$(dir $(srctree)))
   9 endif
  10
  11 ifeq ($(V),1)
  12   Q =
  13   msg =
  14 else
  15   Q = @
  16   msg = @printf '  %-8s %s%s\n' "$(1)" "$(notdir $(2))" "$(if $(3), $(3))";
  17   MAKEFLAGS=--no-print-directory
  18 endif
  19
  20 # always use the host compiler
  21 ifneq ($(LLVM),)
  22 HOSTAR  ?= llvm-ar
  23 HOSTCC  ?= clang
  24 HOSTLD  ?= ld.lld
  25 else
  26 HOSTAR  ?= ar
  27 HOSTCC  ?= gcc
  28 HOSTLD  ?= ld
  29 endif
  30 AR       = $(HOSTAR)
  31 CC       = $(HOSTCC)
  32 LD       = $(HOSTLD)
  33 ARCH     = $(HOSTARCH)
  34
  35 OUTPUT ?= $(srctree)/tools/bpf/resolve_btfids/
  36
  37 LIBBPF_SRC := $(srctree)/tools/lib/bpf/
  38 SUBCMD_SRC := $(srctree)/tools/lib/subcmd/
  39
  40 BPFOBJ     := $(OUTPUT)/libbpf.a
  41 SUBCMDOBJ  := $(OUTPUT)/libsubcmd.a
  42
  43 BINARY     := $(OUTPUT)/resolve_btfids
  44 BINARY_IN  := $(BINARY)-in.o
  45
  46 all: $(BINARY)
  47
  48 $(OUTPUT):
  49         $(call msg,MKDIR,,$@)
  50         $(Q)mkdir -p $(OUTPUT)
  51
  52 $(SUBCMDOBJ): fixdep FORCE
  53         $(Q)$(MAKE) -C $(SUBCMD_SRC) OUTPUT=$(OUTPUT)
  54
  55 $(BPFOBJ): $(wildcard $(LIBBPF_SRC)/*.[ch] $(LIBBPF_SRC)/Makefile) | $(OUTPUT)
  56         $(Q)$(MAKE) $(submake_extras) -C $(LIBBPF_SRC)  OUTPUT=$(abspath $(dir $@))/ $(abspath $@)
  57
  58 CFLAGS := -g \
  59           -I$(srctree)/tools/include \
  60           -I$(srctree)/tools/include/uapi \
  61           -I$(LIBBPF_SRC) \
  62           -I$(SUBCMD_SRC)
  63
  64 LIBS = -lelf -lz
  65
  66 export srctree OUTPUT CFLAGS Q
  67 include $(srctree)/tools/build/Makefile.include
  68
  69 $(BINARY_IN): fixdep FORCE
  70         $(Q)$(MAKE) $(build)=resolve_btfids
  71
  72 $(BINARY): $(BPFOBJ) $(SUBCMDOBJ) $(BINARY_IN)
  73         $(call msg,LINK,$@)
  74         $(Q)$(CC) $(BINARY_IN) $(LDFLAGS) -o $@ $(BPFOBJ) $(SUBCMDOBJ) $(LIBS)
  75
  76 libsubcmd-clean:
  77         $(Q)$(MAKE) -C $(SUBCMD_SRC) OUTPUT=$(OUTPUT) clean
  78
  79 libbpf-clean:
  80         $(Q)$(MAKE) -C $(LIBBPF_SRC) OUTPUT=$(OUTPUT) clean
  81
  82 clean: libsubcmd-clean libbpf-clean fixdep-clean
  83         $(call msg,CLEAN,$(BINARY))
  84         $(Q)$(RM) -f $(BINARY); \
  85         $(RM) -rf $(if $(OUTPUT),$(OUTPUT),.)/feature; \
  86         find $(if $(OUTPUT),$(OUTPUT),.) -name \*.o -or -name \*.o.cmd -or -name \*.o.d | xargs $(RM)
  87
  88 tags:
  89         $(call msg,GEN,,tags)
  90         $(Q)ctags -R . $(LIBBPF_SRC) $(SUBCMD_SRC)
  91
  92 FORCE:
  93
  94 .PHONY: all FORCE clean tags