1*092db7fbSJerome Forissier_cc-option-supported = $(if $(shell $(CC$(sm)) -Werror $(1) -c -x c /dev/null -o /dev/null 2>/dev/null >/dev/null || echo "Not supported"),,1) 2331ebf7eSJerome Forissier_cc-opt-cached-var-name = $(subst =,~,$(strip cached-cc-option-$(1)-$(subst $(empty) $(empty),,$(CC$(sm))))) 3331ebf7eSJerome Forissierdefine _cc-option 4331ebf7eSJerome Forissier$(eval _var_name := $(call _cc-opt-cached-var-name,$(1))) 5331ebf7eSJerome Forissier$(eval $(_var_name) := $(if $(filter $(origin $(_var_name)),undefined),$(call _cc-option-supported,$(1)),$($(_var_name)))) 6331ebf7eSJerome Forissier$(if $($(_var_name)),$(1),$(2)) 7331ebf7eSJerome Forissierendef 8331ebf7eSJerome Forissiercc-option = $(strip $(call _cc-option,$(1),$(2))) 9331ebf7eSJerome Forissier 1079f882fcSJerome Forissier_ld-option-supported = $(if $(shell ($(LD$(sm)) -v $(1) 2>&1 || echo warning) | grep warning),,1) 1132f25468SJerome Forissier_ld-opt-cached-var-name = $(subst =,~,$(subst $(empty) $(empty),,$(strip cached-ld-option-$(1)-$(LD$(sm))))) 1232f25468SJerome Forissierdefine _ld-option 1332f25468SJerome Forissier$(eval _var_name := $(call _ld-opt-cached-var-name,$(1))) 1432f25468SJerome Forissier$(eval $(_var_name) := $(if $(filter $(origin $(_var_name)),undefined),$(call _ld-option-supported,$(1)),$($(_var_name)))) 1532f25468SJerome Forissier$(if $($(_var_name)),$(1),$(2)) 1632f25468SJerome Forissierendef 1732f25468SJerome Forissierld-option = $(strip $(call _ld-option,$(1),$(2))) 18