mirror of
https://github.com/checkpoint-restore/criu.git
synced 2026-07-18 17:14:28 +00:00
9ca150867f
Thus to choose which deps to include, for example if only particular file is being build there is no need to include any other deps. Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com> Signed-off-by: Andrei Vagin <avagin@virtuozzo.com>
330 lines
10 KiB
Makefile
330 lines
10 KiB
Makefile
ifndef ____nmk_defined__build
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#
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# General helpers for simplified Makefiles.
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#
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src := $(obj)
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src-makefile := $(call objectify,$(makefile))
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obj-y :=
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obj-e :=
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builtin-name :=
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builtin-target :=
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lib-y :=
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lib-e :=
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lib-name :=
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lib-target :=
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hostprogs-y :=
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libso-y :=
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ld_flags :=
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ldflags-so :=
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arflags-y :=
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target :=
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deps-y :=
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all-y :=
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cleanup-y :=
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mrproper-y :=
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target :=
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objdirs :=
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MAKECMDGOALS := $(call uniq,$(MAKECMDGOALS))
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ifndef obj
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$(error obj is undefined)
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endif
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ifndef __nmk-makefile-deps
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# Add top-make - it isn't included into this build.mk
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__nmk-makefile-deps := Makefile
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endif
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__nmk-makefile-deps += $(src-makefile)
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export __nmk-makefile-deps
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#
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# Filter out any -Wl,XXX option: some of build farms
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# assumes that we're using $(CC) for building built-in
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# targets (and they have all rights to). But we're
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# using $(LD) directly instead so filter out -Wl
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# flags to make maintainer's life easier.
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LDFLAGS-MASK := -Wl,%
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LDFLAGS := $(filter-out $(LDFLAGS-MASK),$(LDFLAGS))
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#
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# Accumulate common flags.
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define nmk-ccflags
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$(filter-out $(CFLAGS_REMOVE_$(@F)), $(CFLAGS) $(ccflags-y) $(CFLAGS_$(@F)))
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endef
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define nmk-asflags
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$(CFLAGS) $(AFLAGS) $(asflags-y) $(AFLAGS_$(@F))
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endef
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define nmk-host-ccflags
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$(HOSTCFLAGS) $(host-ccflags-y) $(HOSTCFLAGS_$(@F))
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endef
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#
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# General rules.
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define gen-cc-rules
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$(1).o: $(2).c $(__nmk-makefile-deps)
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$$(call msg-cc, $$@)
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$$(Q) $$(CC) -c $$(strip $$(nmk-ccflags)) $$< -o $$@
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$(1).i: $(2).c $(__nmk-makefile-deps)
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$$(call msg-cc, $$@)
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$$(Q) $$(CC) -E $$(strip $$(nmk-ccflags)) $$< -o $$@
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$(1).s: $(2).c $(__nmk-makefile-deps)
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$$(call msg-cc, $$@)
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$$(Q) $$(CC) -S -fverbose-asm $$(strip $$(nmk-ccflags)) $$< -o $$@
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$(1).d: $(2).c $(__nmk-makefile-deps)
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$$(call msg-dep, $$@)
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$$(Q) $$(CC) -M -MT $$@ -MT $$(patsubst %.d,%.o,$$@) $$(strip $$(nmk-ccflags)) $$< -o $$@
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$(1).o: $(2).S $(__nmk-makefile-deps)
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$$(call msg-cc, $$@)
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$$(Q) $$(CC) -c $$(strip $$(nmk-asflags)) $$< -o $$@
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$(1).i: $(2).S $(__nmk-makefile-deps)
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$$(call msg-cc, $$@)
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$$(Q) $$(CC) -E $$(strip $$(nmk-asflags)) $$< -o $$@
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$(1).d: $(2).S $(__nmk-makefile-deps)
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$$(call msg-dep, $$@)
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$$(Q) $$(CC) -M -MT $$@ -MT $$(patsubst %.d,%.o,$$@) $$(strip $$(nmk-asflags)) $$< -o $$@
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endef
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include $(src-makefile)
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ifneq ($(strip $(target)),)
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target := $(sort $(call uniq,$(target)))
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endif
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#
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# Prepare the unique entries.
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obj-y := $(sort $(call uniq,$(obj-y)))
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lib-y := $(filter-out $(obj-y),$(lib-y))
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#
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# Add subdir path
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obj-y := $(call objectify,$(obj-y))
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lib-y := $(call objectify,$(lib-y))
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#
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# Strip custom names.
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lib-name := $(strip $(lib-name))
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builtin-name := $(strip $(builtin-name))
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#
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# Link flags.
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ldflags-y := $(strip $(LDFLAGS) $(ldflags-y))
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#
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# $(obj) related rules.
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$(eval $(call gen-cc-rules,$(obj)/%,$(obj)/%))
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#
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# Prepare targets.
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ifneq ($(lib-y),)
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ifneq ($(lib-name),)
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lib-target := $(obj)/$(lib-name)
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else
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lib-target := $(obj)/lib.a
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endif
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cleanup-y += $(call cleanify,$(lib-y))
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cleanup-y += $(lib-target)
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all-y += $(lib-target)
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objdirs += $(dir $(lib-y))
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endif
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ifneq ($(obj-y),)
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ifneq ($(builtin-name),)
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builtin-target := $(obj)/$(builtin-name)
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else
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builtin-target := $(obj)/built-in.o
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endif
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cleanup-y += $(call cleanify,$(obj-y))
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cleanup-y += $(builtin-target)
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all-y += $(builtin-target)
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objdirs += $(dir $(obj-y))
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endif
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#
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# Helpers for targets.
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define gen-ld-target-rule
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$(1): $(3)
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$$(call msg-link, $$@)
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$$(Q) $$(LD) $(2) -o $$@ $(4)
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endef
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define gen-ar-target-rule
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$(1): $(3)
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$$(call msg-ar, $$@)
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$$(Q) $$(AR) -rcs$(2) $$@ $(4)
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endef
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#
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# Predefined (builtins) targets rules.
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ifdef builtin-target
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$(eval $(call gen-ld-target-rule, \
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$(builtin-target), \
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$(ldflags-y), \
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$(obj-y) $(__nmk-makefile-deps), \
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$(obj-y) $(call objectify,$(obj-e))))
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endif
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ifdef lib-target
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$(eval $(call gen-ar-target-rule, \
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$(lib-target), \
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$(ARFLAGS) $(arflags-y), \
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$(lib-y) $(__nmk-makefile-deps), \
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$(lib-y) $(call objectify,$(lib-e))))
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endif
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#
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# Custom targets rules.
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define gen-custom-target-rule
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ifneq ($($(1)-obj-y),)
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$(eval $(call gen-ld-target-rule, \
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$(obj)/$(1).built-in.o, \
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$(ldflags-y) $(LDFLAGS_$(1)), \
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$(call objectify,$($(1)-obj-y)) \
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$(__nmk-makefile-deps), \
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$(call objectify,$($(1)-obj-y)) \
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$(call objectify,$($(1)-obj-e))))
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all-y += $(obj)/$(1).built-in.o
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cleanup-y += $(call cleanify,$(call objectify,$($(1)-obj-y)))
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cleanup-y += $(obj)/$(1).built-in.o
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objdirs += $(dir $(call objectify,$($(1)-obj-y)))
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endif
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ifneq ($($(1)-lib-y),)
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$(eval $(call gen-ar-target-rule, \
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$(obj)/$(1).lib.a, \
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$(ARFLAGS) $($(1)-arflags-y), \
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$(call objectify,$($(1)-lib-y)) \
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$(__nmk-makefile-deps), \
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$(call objectify,$($(1)-lib-y))) \
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$(call objectify,$($(1)-lib-e)))
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all-y += $(obj)/$(1).lib.a
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cleanup-y += $(call cleanify,$(call objectify,$($(1)-lib-y)))
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cleanup-y += $(obj)/$(1).lib.a
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objdirs += $(dir $(call objectify,$($(1)-lib-y)))
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endif
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endef
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$(foreach t,$(target),$(eval $(call gen-custom-target-rule,$(t))))
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#
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# Prepare rules for dirs other than (obj)/.
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objdirs := $(patsubst %/,%,$(filter-out $(obj)/,$(call uniq,$(objdirs))))
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$(foreach t,$(objdirs),$(eval $(call gen-cc-rules,$(t)/%,$(t)/%)))
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#
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# Host programs.
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define gen-host-cc-rules
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$(addprefix $(obj)/,$(1)): $(obj)/%.o: $(obj)/%.c $(__nmk-makefile-deps)
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$$(call msg-host-cc, $$@)
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$$(Q) $$(HOSTCC) -c $$(strip $$(nmk-host-ccflags)) $$< -o $$@
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$(patsubst %.o,%.i,$(addprefix $(obj)/,$(1))): $(obj)/%.i: $(obj)/%.c $(__nmk-makefile-deps)
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$$(call msg-host-cc, $$@)
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$$(Q) $$(HOSTCC) -E $$(strip $$(nmk-host-ccflags)) $$< -o $$@
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$(patsubst %.o,%.s,$(addprefix $(obj)/,$(1))): $(obj)/%.s: $(obj)/%.c $(__nmk-makefile-deps)
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$$(call msg-host-cc, $$@)
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$$(Q) $$(HOSTCC) -S -fverbose-asm $$(strip $$(nmk-host-ccflags)) $$< -o $$@
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$(patsubst %.o,%.d,$(addprefix $(obj)/,$(1))): $(obj)/%.d: $(obj)/%.c $(__nmk-makefile-deps)
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$$(call msg-host-dep, $$@)
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$$(Q) $$(HOSTCC) -M -MT $$@ -MT $$(patsubst %.d,%.o,$$@) $$(strip $$(nmk-host-ccflags)) $$< -o $$@
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endef
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define gen-host-rules
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$(eval $(call gen-host-cc-rules,$($(1)-objs)))
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all-y += $(addprefix $(obj)/,$($(1)-objs))
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cleanup-y += $(call cleanify,$(addprefix $(obj)/,$($(1)-objs)))
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$(obj)/$(1): $(addprefix $(obj)/,$($(1)-objs)) $(__nmk-makefile-deps)
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$$(call msg-host-link, $$@)
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$$(Q) $$(HOSTCC) $$(HOSTCFLAGS) $(addprefix $(obj)/,$($(1)-objs)) $$(HOSTLDFLAGS) $$(HOSTLDFLAGS_$$(@F)) -o $$@
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all-y += $(obj)/$(1)
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cleanup-y += $(obj)/$(1)
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endef
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$(foreach t,$(hostprogs-y),$(eval $(call gen-host-rules,$(t))))
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#
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# Dynamic library linking.
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define gen-so-link-rules
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$(call objectify,$(1)).so: $(call objectify,$($(1)-objs)) $(__nmk-makefile-deps)
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$$(call msg-link, $$@)
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$$(Q) $$(CC) -shared $$(ldflags-so) $$(LDFLAGS) $$(LDFLAGS_$$(@F)) -o $$@ $(call objectify,$($(1)-objs))
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all-y += $(call objectify,$(1)).so
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cleanup-y += $(call objectify,$(1)).so
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endef
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$(foreach t,$(libso-y),$(eval $(call gen-so-link-rules,$(t))))
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#
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# Figure out if the target we're building needs deps to include.
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define collect-builtin-deps
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ifeq ($(1),$(2))
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deps-y += $(obj-y:.o=.d)
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endif
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endef
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define collect-lib-deps
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ifeq ($(1),$(2))
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deps-y += $(lib-y:.o=.d)
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endif
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endef
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define collect-hostprogs-deps
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ifeq ($(1),$(2))
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deps-y += $(addprefix $(obj)/,$($(1)-objs:.o=.d))
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endif
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endef
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define collect-target-deps
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ifeq ($(1),$(2))
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deps-y += $(call objectify,$($(t)-lib-y:.o=.d))
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deps-y += $(call objectify,$($(t)-obj-y:.o=.d))
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endif
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endef
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define collect-deps
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ifneq ($(filter all,$(1)),)
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$(eval $(call collect-builtin-deps,$(builtin-target),$(builtin-target)))
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$(eval $(call collect-lib-deps,$(lib-target),$(lib-target)))
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$(foreach t,$(hostprogs-y),$(eval $(call collect-hostprogs-deps,$(t),$(t))))
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$(foreach t,$(target),$(eval $(call collect-target-deps,$(t),$(t))))
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else
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ifneq ($(filter-out %.d $(builtin-target) $(lib-target) $(hostprogs-y) $(target),$(1)),)
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ifneq ($(filter %.o %.i %.s,$(1)),)
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deps-y += $(addsuffix .d,$(basename $(1)))
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endif
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else
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$(eval $(call collect-builtin-deps,$(builtin-target),$(1)))
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$(eval $(call collect-lib-deps,$(lib-target),$(1)))
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$(foreach t,$(hostprogs-y),$(eval $(call collect-hostprogs-deps,$(t),$(1))))
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$(foreach t,$(target),$(eval $(call collect-target-deps,$(t),$(1))))
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endif
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endif
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endef
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ifneq ($(MAKECMDGOALS),)
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ifneq ($(filter-out clean mrproper,$(MAKECMDGOALS)),)
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$(foreach goal,$(MAKECMDGOALS),$(eval $(call collect-deps,$(goal))))
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deps-y := $(call uniq,$(deps-y))
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ifneq ($(deps-y),)
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$(eval -include $(deps-y))
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endif
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endif
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endif
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#
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# Main phony rule.
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all: $(all-y) ;
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.PHONY: all
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#
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# Clean most files, but leave enough to navigate with tags (generated files)
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clean:
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$(call msg-clean, $(obj))
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$(Q) $(RM) $(cleanup-y)
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.PHONY: clean
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#
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# Delete all generated files
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mrproper: clean
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$(Q) $(RM) $(mrproper-y)
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.PHONY: mrproper
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#
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# Footer.
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____nmk_defined__build = y
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endif
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