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# opkhelper
# lib/buildsystem/make.sh
# Build system plugin for POSIX-conformant make.
#
# Copyright (C) 2012 Patrick "P. J." McDermott
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.

[ "x${_OH_BUILDSYSTEM_MAKE_SM+set}" = 'xset' ] && return 0
_OH_BUILDSYSTEM_MAKE_SM=1

_oh_make_can_configure()
{
	return 1
}

_oh_make_can_build()
{
	[ -r "${_OH_BUILDSYSTEM_BUILD_DIR}/makefile" -o \
		-r "${_OH_BUILDSYSTEM_BUILD_DIR}/Makefile" ]
}

_oh_make_build()
{
	_oh_make_update_first_defined_target '' "${@}"
}

_oh_make_can_clean()
{
	_oh_make_can_build
}

_oh_make_clean()
{
	_oh_make_update_first_defined_target 'distclean realclean clean' "${@}"
}

_oh_make_can_test()
{
	_oh_make_can_build
}

_oh_make_test()
{
	_oh_make_update_first_defined_target 'test check' "${@}"
}

_oh_make_can_install()
{
	_oh_make_can_build
}

_oh_make_install()
{
	# About the destination directory macros:
	#   * As recommended by the GNU Coding Standards (since 1998-10-15),
	#     makefiles generated by GNU Automake use DESTDIR (since 1998-03-20
	#     and released in Automake 1.3).
	#   * The makefile of glibc (and therefore EGLIBC) uses install_root
	#     (since 1997-01-18).  (Since 2011-07-05, install_root is set to the
	#     value of DESTDIR by default.)  Postfix is another package that
	#     uses install_root.
	#   * The makefiles of some other packages use INSTALL_ROOT.  PHP 5 is
	#     one such package.  Makefiles generated by qmake and CMake also use
	#     INSTALL_ROOT.
	_oh_make_update_first_defined_target 'install' \
		"DESTDIR=${_OH_BUILDSYSTEM_DESTDIR}" \
		"install_root=${_OH_BUILDSYSTEM_DESTDIR}" \
		"INSTALL_ROOT=${_OH_BUILDSYSTEM_DESTDIR}" \
		"${@}"
}

_oh_make_update_first_defined_target()
{
	local targets="${1}"
	local target=
	local rc=

	shift

	mkdir -p "${_OH_BUILDSYSTEM_BUILD_DIR}"
	cd "${_OH_BUILDSYSTEM_BUILD_DIR}"

	if [ "x${_OH_BUILDSYSTEM_BUILD_TARGET}" != 'x' ]; then
		make "${@}" "${_OH_BUILDSYSTEM_BUILD_TARGET}"
		rc=${?}
	elif [ "x${targets}" != 'x' ]; then
		for target in ${targets}; do
			# If the target is defined, ...
			if make -n "${target}" >/dev/null 2>&1; then
				# ... then update it.
				make "${@}" "${target}"
				rc=${?}
				break
			fi
		done
	else
		make "${@}"
		rc=${?}
	fi

	cd "${_OH_BUILDSYSTEM_WORK_AREA}"

	return ${rc}
}