linux/scripts/Makefile.modbuiltin
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   1# ==========================================================================
   2# Generating modules.builtin
   3# ==========================================================================
   4
   5src := $(obj)
   6
   7PHONY := __modbuiltin
   8__modbuiltin:
   9
  10-include include/config/auto.conf
  11# tristate.conf sets tristate variables to uppercase 'Y' or 'M'
  12# That way, we get the list of built-in modules in obj-Y
  13-include include/config/tristate.conf
  14
  15include scripts/Kbuild.include
  16
  17ifneq ($(KBUILD_SRC),)
  18# Create output directory if not already present
  19_dummy := $(shell [ -d $(obj) ] || mkdir -p $(obj))
  20endif
  21
  22# The filename Kbuild has precedence over Makefile
  23kbuild-dir := $(if $(filter /%,$(src)),$(src),$(srctree)/$(src))
  24kbuild-file := $(if $(wildcard $(kbuild-dir)/Kbuild),$(kbuild-dir)/Kbuild,$(kbuild-dir)/Makefile)
  25include $(kbuild-file)
  26
  27include scripts/Makefile.lib
  28__subdir-Y     := $(patsubst %/,%,$(filter %/, $(obj-Y)))
  29subdir-Y       += $(__subdir-Y)
  30subdir-ym      := $(sort $(subdir-y) $(subdir-Y) $(subdir-m))
  31subdir-ym      := $(addprefix $(obj)/,$(subdir-ym))
  32obj-Y          := $(addprefix $(obj)/,$(obj-Y))
  33
  34modbuiltin-subdirs := $(patsubst %,%/modules.builtin, $(subdir-ym))
  35modbuiltin-mods    := $(filter %.ko, $(obj-Y:.o=.ko))
  36modbuiltin-target  := $(obj)/modules.builtin
  37
  38__modbuiltin: $(modbuiltin-target) $(subdir-ym)
  39        @:
  40
  41$(modbuiltin-target): $(subdir-ym) FORCE
  42        $(Q)(for m in $(modbuiltin-mods); do echo kernel/$$m; done;     \
  43        cat /dev/null $(modbuiltin-subdirs)) > $@
  44
  45PHONY += FORCE
  46
  47FORCE:
  48
  49# Descending
  50# ---------------------------------------------------------------------------
  51
  52PHONY += $(subdir-ym)
  53$(subdir-ym):
  54        $(Q)$(MAKE) $(modbuiltin)=$@
  55
  56
  57# Declare the contents of the .PHONY variable as phony.  We keep that
  58# information in a variable se we can use it in if_changed and friends.
  59
  60.PHONY: $(PHONY)
  61
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