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 # -*- makefile -*-

 # vim:set ts=8 sw=8 sts=8 noet:

 #

 # This Source Code Form is subject to the terms of the Mozilla Public

 # License, v. 2.0. If a copy of the MPL was not distributed with this

 # file, You can obtain one at http://mozilla.org/MPL/2.0/.

 # The purpose of this file is to pull in non-recursive targets when performing

 # a partial tree (not top-level) build. This will allow people to continue to

 # build individual directories while some of the targets may not be normally

 # defined in that make file.

 #

 # Non-recursive targets are attached to existing make targets. The

 # NONRECURSIVE_TARGETS variable lists the make targets that modified. For

 # each target in this list, the NONRECURSIVE_TARGET_<target> variable will

 # contain a list of partial variable names. We will then look in variables

 # named NONRECURSIVE_TARGETS_<target>_<fragment>_* for information describing

 # how to evaluate non-recursive make targets.

 #

 # Targets are defined by the following variables:

 #

 #   FILE - The make file to evaluate. This is equivalent to

 #      |make -f <FILE>|

 #   DIRECTORY - The directory whose Makefile to evaluate. This is

 #      equivalent to |make -C <DIRECTORY>|.

 #   TARGETS - Targets to evaluate in that make file.

 #

 # Only 1 of FILE or DIRECTORY may be defined.

 #

 # For example:

 #

 # NONRECURSIVE_TARGETS = export libs

 # NONRECURSIVE_TARGETS_export = headers

 # NONRECURSIVE_TARGETS_export_headers_FILE = /path/to/exports.mk

 # NONRECURSIVE_TARGETS_export_headers_TARGETS = $(DIST)/include/foo.h $(DIST)/include/bar.h

 # NONRECURSIVE_TARGETS_libs = cppsrcs

 # NONRECURSIVE_TARGETS_libs_cppsrcs_DIRECTORY = $(DEPTH)/foo

 # NONRECURSIVE_TARGETS_libs_cppsrcs_TARGETS = /path/to/foo.o /path/to/bar.o

 #

 # Will get turned into the following:

 #

 # exports::

 #     $(MAKE) -C $(DEPTH) -f /path/to/exports.mk $(DIST)/include/foo.h $(DIST)/include/bar.h

 #

 # libs::

 #     $(MAKE) -C $(DEPTH)/foo /path/to/foo.o /path/to/bar.o

 ifndef INCLUDED_NONRECURSIVE_MK

 define define_nonrecursive_target

 $(1)::

 	$$(MAKE) -C $(or $(4),$$(DEPTH)) $(addprefix -f ,$(3)) $(2)

 endef

 $(foreach target,$(NONRECURSIVE_TARGETS), \

     $(foreach entry,$(NONRECURSIVE_TARGETS_$(target)), \

         $(eval $(call define_nonrecursive_target, \

             $(target), \

             $(NONRECURSIVE_TARGETS_$(target)_$(entry)_TARGETS), \

             $(NONRECURSIVE_TARGETS_$(target)_$(entry)_FILE), \

             $(NONRECURSIVE_TARGETS_$(target)_$(entry)_DIRECTORY), \

         )) \

     ) \

 )

 INCLUDED_NONRECURSIVE_MK := 1

 endif