blob: c236c7394b6b9204e3cfe5957f34e6cf0fcfc8ef (
plain)
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MAKEFLAGS += --no-builtin-variables
# This version is more correct, but is slower:
# $(foreach v,$(shell bash -c 'comm -23 <(env -i $(MAKE) -f - <<<"\$$(info \$$(.VARIABLES))all:"|sed "s/ /\n/g"|sort) <(env -i $(MAKE) -R -f - <<<"\$$(info \$$(.VARIABLES))all:"|sed "s/ /\n/g"|sort)'),
# $(if $(filter default,$(origin $v)),$(eval undefine $v)))
_default_variables = $(foreach v,$(.VARIABLES),$(if $(filter default,$(origin $v)),$v))
$(foreach v,$(filter-out .% MAKE% SUFFIXES,$(_default_variables))\
$(filter .LIBPATTERNS MAKEINFO,$(_default_variables)),\
$(eval undefine $v))
undefine _default_variables
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