Initial Spring 2016 commit.

mk/os161.baserules.mk

@@ -0,0 +1,78 @@
+#
+# OS/161 build environment: some very basic rules.
+#
+# Individual program makefiles should use os161.prog.mk or
+# os161.lib.mk instead of including this file directly.
+#
+# The variable MKDIRS is used to generate rules for creating
+# (mostly installation) directories via os161.mkdirs.mk.
+
+# Process this file only once even if included repeatedly
+.if !defined(_BASERULES_MK_)
+_BASERULES_MK_=# empty
+
+
+#
+# Establish that all these (basic) rules exist and depend on the
+# local (non-subdir) version.
+#
+.for _T_ in all depend install install-staging clean distclean tags
+$(_T_): ;
+$(_T_): $(_T_)-local
+.PHONY: $(_T_) $(_T_)-local
+.endfor
+
+# distclean implies clean
+distclean: clean-local
+
+
+#
+# Some other derived rules.
+#
+
+# cleandir is the same as distclean (cleandir is the old BSD name)
+cleandir: distclean-local
+
+# "stage" is a good short name for install-staging
+stage: install-staging-local
+
+# dependall means depend then compile, but it's important to run a
+# new make after depending so the new depends take effect.
+dependall-local: depend-local
+	$(MAKE) all-local
+dependall: dependall-local
+
+# build means depend, compile, and install-staging; it also needs a
+# new make after depending. It could use the same one for compile
+# and install-staging, but that turns out to be awkward.
+build-local: dependall-local
+	$(MAKE) install-staging-local
+build: build-local
+
+# rebuild cleans first
+rebuild: clean-local .WAIT build-local
+
+# fullrebuild does distclean
+fullrebuild: distclean-local .WAIT build-local
+
+# implement BUILDSYMLINKS
+.if "$(BUILDSYMLINKS)" == "yes"
+.if !exists(build)
+all depend: buildlink
+.endif
+buildlink:
+	ln -s $(MYBUILDDIR) build
+clean: remove-buildlink
+remove-buildlink:
+	rm -f build
+.PHONY: buildlink remove-buildlink
+.endif
+
+.PHONY: cleandir stage dependall build rebuild fullrebuild
+.PHONY: dependall-local build-local
+
+.endif # _BASERULES_MK_
+
+.include "$(TOP)/mk/os161.mkdirs.mk"
+
+# End.