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# This Makefile frament (since dpkg 1.16.1) defines all the DEB_HOST_* and
# DEB_BUILD_* variables that dpkg-architecture can return. Existing values
# of those variables are preserved as per policy.
dpkg_lazy_eval ?= $$(or $$(value DPKG_CACHE_$(1)),$$(eval DPKG_CACHE_$(1) := $$(shell $(2)))$$(value DPKG_CACHE_$(1)))
dpkg_architecture_setvar = export $(1) ?= $(call dpkg_lazy_eval,$(1),dpkg-architecture -q$(1))
$(foreach machine,BUILD HOST TARGET,\
$(foreach var,ARCH ARCH_ABI ARCH_LIBC ARCH_OS ARCH_CPU ARCH_BITS ARCH_ENDIAN GNU_CPU GNU_SYSTEM GNU_TYPE MULTIARCH,\
$(eval $(call dpkg_architecture_setvar,DEB_$(machine)_$(var)))))
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