+install-docs ::
+ @case '${MFLAGS}' in *-[ik]*) x_on_err=0;; *-r*[ik]*) x_on_err=0;; *) x_on_err=1;; esac; \
+ for i in $(filter-out $(ProjectsDontInstall), $(SUBDIRS)); do \
+ if [ -d $$i ]; then \
+ $(MAKE) -C $$i install-docs; \
+ if [ $$? -eq 0 -o $$x_on_err -eq 0 ] ; then true; else exit 1; fi; \
+ fi; \
+ done
+
+# Turn off target.mk's rules for 'all', 'boot' and 'install'.
+NO_BOOT_TARGET=YES
+NO_ALL_TARGET=YES
+NO_INSTALL_TARGET=YES
+