Makefile.clean 3.2 KB

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  1. # ==========================================================================
  2. # Cleaning up
  3. # ==========================================================================
  4. src := $(obj)
  5. PHONY := __clean
  6. __clean:
  7. # Shorthand for $(Q)$(MAKE) scripts/Makefile.clean obj=dir
  8. # Usage:
  9. # $(Q)$(MAKE) $(clean)=dir
  10. clean := -f $(if $(KBUILD_SRC),$(srctree)/)scripts/Makefile.clean obj
  11. # The filename Kbuild has precedence over Makefile
  12. kbuild-dir := $(if $(filter /%,$(src)),$(src),$(srctree)/$(src))
  13. include $(if $(wildcard $(kbuild-dir)/Kbuild), $(kbuild-dir)/Kbuild, $(kbuild-dir)/Makefile)
  14. # Figure out what we need to build from the various variables
  15. # ==========================================================================
  16. __subdir-y := $(patsubst %/,%,$(filter %/, $(obj-y)))
  17. subdir-y += $(__subdir-y)
  18. __subdir-m := $(patsubst %/,%,$(filter %/, $(obj-m)))
  19. subdir-m += $(__subdir-m)
  20. __subdir-n := $(patsubst %/,%,$(filter %/, $(obj-n)))
  21. subdir-n += $(__subdir-n)
  22. __subdir- := $(patsubst %/,%,$(filter %/, $(obj-)))
  23. subdir- += $(__subdir-)
  24. # Subdirectories we need to descend into
  25. subdir-ym := $(sort $(subdir-y) $(subdir-m))
  26. subdir-ymn := $(sort $(subdir-ym) $(subdir-n) $(subdir-))
  27. # Add subdir path
  28. subdir-ymn := $(addprefix $(obj)/,$(subdir-ymn))
  29. # build a list of files to remove, usually releative to the current
  30. # directory
  31. __clean-files := $(extra-y) $(EXTRA_TARGETS) $(always) \
  32. $(targets) $(clean-files) \
  33. $(host-progs) \
  34. $(hostprogs-y) $(hostprogs-m) $(hostprogs-)
  35. # as clean-files is given relative to the current directory, this adds
  36. # a $(obj) prefix, except for absolute paths
  37. __clean-files := $(wildcard \
  38. $(addprefix $(obj)/, $(filter-out /%, $(__clean-files))) \
  39. $(filter /%, $(__clean-files)))
  40. # as clean-dirs is given relative to the current directory, this adds
  41. # a $(obj) prefix, except for absolute paths
  42. __clean-dirs := $(wildcard \
  43. $(addprefix $(obj)/, $(filter-out /%, $(clean-dirs))) \
  44. $(filter /%, $(clean-dirs)))
  45. # ==========================================================================
  46. quiet_cmd_clean = CLEAN $(obj)
  47. cmd_clean = rm -f $(__clean-files)
  48. quiet_cmd_cleandir = CLEAN $(__clean-dirs)
  49. cmd_cleandir = rm -rf $(__clean-dirs)
  50. __clean: $(subdir-ymn)
  51. ifneq ($(strip $(__clean-files)),)
  52. +$(call cmd,clean)
  53. endif
  54. ifneq ($(strip $(__clean-dirs)),)
  55. +$(call cmd,cleandir)
  56. endif
  57. ifneq ($(strip $(clean-rule)),)
  58. +$(clean-rule)
  59. endif
  60. @:
  61. # ===========================================================================
  62. # Generic stuff
  63. # ===========================================================================
  64. # Descending
  65. # ---------------------------------------------------------------------------
  66. PHONY += $(subdir-ymn)
  67. $(subdir-ymn):
  68. $(Q)$(MAKE) $(clean)=$@
  69. # If quiet is set, only print short version of command
  70. cmd = @$(if $($(quiet)cmd_$(1)),echo ' $($(quiet)cmd_$(1))' &&) $(cmd_$(1))
  71. # Declare the contents of the .PHONY variable as phony. We keep that
  72. # information in a variable se we can use it in if_changed and friends.
  73. .PHONY: $(PHONY)