include/subdir.mk

   1 # debug flags:
   2 #
   3 # d: show subdirectory tree
   4 # t: show added targets
   5 # l: show legacy targets
   6
   7 ifeq ($(DEBUG),all)
   8   build_debug:=dlt
   9 else
  10   build_debug:=$(DEBUG)
  11 endif
  12
  13 define debug
  14 $$(findstring $(2),$$(if $$(DEBUG_DIR),$$(if $$(filter $$(DEBUG_DIR)%,$(1)),$(build_debug)),$(build_debug)))
  15 endef
  16
  17 define warn
  18 $$(if $(call debug,$(1),$(2)),$$(warning $(3)))
  19 endef
  20
  21 define warn_eval
  22 $(call warn,$(1),$(2),$(3)      $(4))
  23 $(4)
  24 endef
  25
  26 SUBTARGETS:=clean download prepare compile install update refresh prereq
  27
  28 define subtarget
  29   $(call warn_eval,$(1),t,T,$(1)/$(2): $($(1)/) $(foreach bd,$(if $($(1)/builddirs-$(2)),$($(1)/builddirs-$(2)),$($(1)/builddirs)),$(1)/$(bd)/$(2)))
  30
  31 endef
  32
  33 # Parameters: <subdir>
  34 define subdir
  35   $(call warn,$(1),d,D $(1))
  36   $(foreach bd,$($(1)/builddirs),
  37     $(call warn,$(1),d,BD $(1)/$(bd))
  38     $(foreach target,$(SUBTARGETS),
  39       $(call warn_eval,$(1)/$(bd),t,T,$(1)/$(bd)/$(target): $($(1)/$(bd)/$(target)) $(call $(1)//$(target),$(1)/$(bd)))
  40                 @+$$(MAKE) -j1 -C $(1)/$(bd) $(target)
  41
  42       # legacy targets
  43       $(call warn_eval,$(1)/$(bd),l,T,$(1)/$(bd)-$(target): $(1)/$(bd)/$(target))
  44         )
  45   )
  46   $(foreach target,$(SUBTARGETS),$(call subtarget,$(1),$(target)))
  47 endef
  48
  49 # Parameters: <subdir> <name>
  50 define stampfile
  51   $(1)/stamp:=$(STAGING_DIR)/stampfiles/.$(2)_installed
  52   $(call rdep,$(1),$$($(1)/stamp))
  53
  54   $$($(1)/stamp):
  55         @+$(MAKE) $(1)/install
  56         @mkdir -p $$$$(dirname $$($(1)/stamp))
  57         @touch $$($(1)/stamp)
  58   .PRECIOUS: $$($(1)/stamp) # work around a make bug
  59
  60   $(1)//clean:=$(1)/stamp/clean
  61   $(1)/stamp/clean: FORCE
  62         @rm -f $$($(1)/stamp)
  63
  64 endef