$(foreach SUBDIR,$(DOC_SUBDIRS),doc.library.$(SUBDIR)):\
doc.library.%: stamp/configure.library.build$(CONFIGURE_STAMP_EXTRAS).% \
$(foreach SUBDIR,$(DOC_SUBDIRS),doc.library.$(SUBDIR)):\
doc.library.%: stamp/configure.library.build$(CONFIGURE_STAMP_EXTRAS).% \