1 # compiler-rt Configuration Support 2 # 3 # This should be included following 'lib_util.mk'. 4 5 # The simple variables configurations can define. 6 PlainConfigVariables := Configs Description 7 PerConfigVariables := UniversalArchs Arch $(AvailableOptions) 8 RequiredConfigVariables := Configs Description 9 10 ### 11 # Load Platforms 12 13 # Template: subdir_traverse_template subdir 14 define load_platform_template 15 $(call Set,PlatformName,$(basename $(notdir $(1)))) 16 ifneq ($(DEBUGMAKE),) 17 $$(info MAKE: $(PlatformName): Loading platform) 18 endif 19 20 # Construct the variable key for this directory. 21 $(call Set,PlatformKey,Platform.$(PlatformName)) 22 $(call Append,PlatformKeys,$(PlatformKey)) 23 $(call Set,$(PlatformKey).Name,$(PlatformName)) 24 $(call Set,$(PlatformKey).Path,$(1)) 25 26 # Reset platform specific variables to sentinel value. 27 $$(foreach var,$(PlainConfigVariables) $(PerConfigVariables),\ 28 $$(call Set,$$(var),UNDEFINED)) 29 $$(foreach var,$(PerConfigVariables),\ 30 $$(foreach config,$$(Configs),\ 31 $$(call Set,$$(var).$$(config),UNDEFINED))) 32 $$(foreach var,$(PerConfigVariables),\ 33 $$(foreach arch,$(AvailableArchs),\ 34 $$(call Set,$$(var).$$(arch),UNDEFINED))) 35 36 # Get the platform variables. 37 include make/options.mk 38 include $(1) 39 40 # Check for undefined required variables. 41 $$(foreach var,$(RequiredConfigVariables),\ 42 $$(if $$(call strneq,UNDEFINED,$$($$(var))),, \ 43 $$(error $(Dir): variable '$$(var)' was not undefined))) 44 45 # Check that exactly one of UniversalArchs or Arch was defined. 46 $$(if $$(and $$(call strneq,UNDEFINED,$$(UniversalArchs)),\ 47 $$(call strneq,UNDEFINED,$$(Arch))),\ 48 $$(error '$(1)': cannot define both 'UniversalArchs' and 'Arch')) 49 $$(if $$(or $$(call strneq,UNDEFINED,$$(UniversalArchs)),\ 50 $$(call strneq,UNDEFINED,$$(Arch))),,\ 51 $$(error '$(1)': must define one of 'UniversalArchs' and 'Arch')) 52 53 # Collect all the platform variables for subsequent use. 54 $$(foreach var,$(PlainConfigVariables) $(PerConfigVariables),\ 55 $$(if $$(call strneq,UNDEFINED,$$($$(var))),\ 56 $$(call CopyVariable,$$(var),$(PlatformKey).$$(var)))) 57 $$(foreach var,$(PerConfigVariables),\ 58 $$(foreach config,$$(Configs),\ 59 $$(if $$(call strneq,UNDEFINED,$$($$(var).$$(config))),\ 60 $$(call CopyVariable,$$(var).$$(config),$(PlatformKey).$$(var).$$(config))))\ 61 $$(foreach arch,$(AvailableArchs),\ 62 $$(if $$(call strneq,UNDEFINED,$$($$(var).$$(arch))),\ 63 $$(call CopyVariable,$$(var).$$(arch),$(PlatformKey).$$(var).$$(arch))))\ 64 $$(foreach config,$$(Configs),\ 65 $$(foreach arch,$(AvailableArchs),\ 66 $$(if $$(call strneq,UNDEFINED,$$($$(var).$$(config).$$(arch))),\ 67 $$(call CopyVariable,$$(var).$$(config).$$(arch),\ 68 $(PlatformKey).$$(var).$$(config).$$(arch)))))) 69 70 ifneq ($(DEBUGMAKE),) 71 $$(info MAKE: $(PlatformName): Done loading platform) 72 endif 73 endef 74 75 # Evaluate this now so we do not have to worry about order of evaluation. 76 PlatformFiles := $(wildcard make/platform/*.mk) 77 ifneq ($(DEBUGMAKE),) 78 $(info MAKE: Loading platforms: $(PlatformFiles)) 79 endif 80 81 $(foreach file,$(PlatformFiles),\ 82 $(eval $(call load_platform_template,$(file)))) 83
