+DEB_HOST_ARCH_CPU := $(shell dpkg-architecture -qDEB_HOST_ARCH_CPU 2>/dev/null)
+ifeq (amd64, $(DEB_HOST_ARCH_CPU))
+ EFI_ARCH := x64
+else
+ifeq (i386, $(DEB_HOST_ARCH_CPU))
+ EFI_ARCH := ia32
+else
+ $(warning EFI architecture for $(DEB_HOST_ARCH_CPU) is unknown)
+ EFI_ARCH := $(DEB_HOST_ARCH_CPU)
+endif
+endif
+