83 lines
3.0 KiB
Makefile
83 lines
3.0 KiB
Makefile
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# compiler-rt Configuration Support
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#
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# This should be included following 'lib_util.mk'.
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# The simple variables configurations can define.
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PlainConfigVariables := Configs Description
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PerConfigVariables := UniversalArchs Arch $(AvailableOptions)
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RequiredConfigVariables := Configs Description
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###
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# Load Platforms
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# Template: subdir_traverse_template subdir
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define load_platform_template
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$(call Set,PlatformName,$(basename $(notdir $(1))))
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ifneq ($(DEBUGMAKE),)
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$$(info MAKE: $(PlatformName): Loading platform)
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endif
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# Construct the variable key for this directory.
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$(call Set,PlatformKey,Platform.$(PlatformName))
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$(call Append,PlatformKeys,$(PlatformKey))
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$(call Set,$(PlatformKey).Name,$(PlatformName))
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$(call Set,$(PlatformKey).Path,$(1))
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# Reset platform specific variables to sentinel value.
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$$(foreach var,$(PlainConfigVariables) $(PerConfigVariables),\
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$$(call Set,$$(var),UNDEFINED))
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$$(foreach var,$(PerConfigVariables),\
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$$(foreach config,$$(Configs),\
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$$(call Set,$$(var).$$(config),UNDEFINED)))
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$$(foreach var,$(PerConfigVariables),\
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$$(foreach arch,$(AvailableArchs),\
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$$(call Set,$$(var).$$(arch),UNDEFINED)))
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# Get the platform variables.
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include make/options.mk
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include $(1)
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# Check for undefined required variables.
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$$(foreach var,$(RequiredConfigVariables),\
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$$(if $$(call strneq,UNDEFINED,$$($$(var))),, \
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$$(error $(Dir): variable '$$(var)' was not undefined)))
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# Check that exactly one of UniversalArchs or Arch was defined.
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$$(if $$(and $$(call strneq,UNDEFINED,$$(UniversalArchs)),\
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$$(call strneq,UNDEFINED,$$(Arch))),\
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$$(error '$(1)': cannot define both 'UniversalArchs' and 'Arch'))
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$$(if $$(or $$(call strneq,UNDEFINED,$$(UniversalArchs)),\
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$$(call strneq,UNDEFINED,$$(Arch))),,\
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$$(error '$(1)': must define one of 'UniversalArchs' and 'Arch'))
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# Collect all the platform variables for subsequent use.
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$$(foreach var,$(PlainConfigVariables) $(PerConfigVariables),\
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$$(if $$(call strneq,UNDEFINED,$$($$(var))),\
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$$(call CopyVariable,$$(var),$(PlatformKey).$$(var))))
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$$(foreach var,$(PerConfigVariables),\
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$$(foreach config,$$(Configs),\
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$$(if $$(call strneq,UNDEFINED,$$($$(var).$$(config))),\
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$$(call CopyVariable,$$(var).$$(config),$(PlatformKey).$$(var).$$(config))))\
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$$(foreach arch,$(AvailableArchs),\
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$$(if $$(call strneq,UNDEFINED,$$($$(var).$$(arch))),\
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$$(call CopyVariable,$$(var).$$(arch),$(PlatformKey).$$(var).$$(arch))))\
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$$(foreach config,$$(Configs),\
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$$(foreach arch,$(AvailableArchs),\
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$$(if $$(call strneq,UNDEFINED,$$($$(var).$$(config).$$(arch))),\
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$$(call CopyVariable,$$(var).$$(config).$$(arch),\
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$(PlatformKey).$$(var).$$(config).$$(arch))))))
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ifneq ($(DEBUGMAKE),)
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$$(info MAKE: $(PlatformName): Done loading platform)
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endif
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endef
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# Evaluate this now so we do not have to worry about order of evaluation.
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PlatformFiles := $(wildcard make/platform/*.mk)
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ifneq ($(DEBUGMAKE),)
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$(info MAKE: Loading platforms: $(PlatformFiles))
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endif
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$(foreach file,$(PlatformFiles),\
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$(eval $(call load_platform_template,$(file))))
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