nonrecursive.mk - mozsearch

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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