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-rw-r--r--extra-lib.mk29
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diff --git a/extra-lib.mk b/extra-lib.mk
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+# This file is included several times in a row, once
+# for each element of $(extra-libs).  $(extra-libs-left)
+# is initialized first to $(extra-libs) so that with each
+# inclusion, we advance $(lib) to the next library name (e.g. libfoo).
+# The variable $($(lib)-routines) defines the list of modules
+# to be included in that library.
+
+lib := $(firstword $(extra-libs-left))
+extra-libs-left := $(filter-out $(lib),$(extra-libs-left))
+
+# Add each flavor of library to the lists of things to build and install.
+install-lib += $(foreach o,$(object-suffixes),$(lib:lib%=$(libtype$o)))
+extra-objs += $(foreach o,$(object-suffixes),$($(lib)-routines:=$o))
+alltypes-$(lib) = $(foreach o,$(object-suffixes),\
+			    $(objpfx)$(patsubst %,$(libtype$o),\
+			    $(lib:lib%=%)))
+ifeq (yes,$(build-shared))
+alltypes-$(lib) += $(objpfx)$(lib).so
+endif
+
+lib-noranlib: $(alltypes-$(lib))
+
+# Use o-iterator.mk to generate a rule for each flavor of library.
+define o-iterator-doit
+$(objpfx)$(patsubst %,$(libtype$o),$(lib:lib%=%)): \
+  $($(lib)-routines:%=$(objpfx)%$o); $$(build-extra-lib)
+endef
+object-suffixes-left := $(filter-out $($(lib)-inhibit-o),$(object-suffixes))
+include $(o-iterator)