#!/bin/sh

# project-agnostic ./configure script, written by hand.

# this file is covered by COPYING.SOFORT.

set -eu

trap config_failure 1 2 EXIT

# before we begin...

mb_path="$PATH"

mb_script="$0"

mb_success=no

usage()

{

	cat "$mb_project_dir"/config.usage

	if [ _$mb_use_custom_cfgdefs = _yes ]; then

		printf '\n\n%s%s\n' \

			" ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^" \

			"^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^"

		printf '%s%s\n' \

			"| Listed above are configure's common switches " \

			"and environment variables.     |"

		printf '%s%s\n' \

			"| Found below are project-specific variables " \

			"and other customization options. |"

		printf '%s%s\n\n\n' \

			" ___________________________________________" \

			"__________________________________"

		cat "$mb_project_dir"/project/config/cfgdefs.usage

	fi

	exit 0

}

error_msg()

{

	printf '%s\n' "$@" >&2

}

warning_msg()

{

	printf '%s\n' "$@" >&2

}

output_step_prolog()

{

	mb_line_dots='.................................'

	mb_line_dots="${mb_line_dots}.${mb_line_dots}"

	mb_step_desc="${mb_package} : ${1##*/} : ${2}()  "

	mb_step_dlen="$((${#mb_line_dots} - ${#mb_step_desc}))"

	printf "configure step: ${2}()\n" >&3

	printf "%s%${mb_step_dlen}.${mb_step_dlen}s  " "${mb_step_desc}" "${mb_line_dots}"

}

output_step_epilog()

{

	printf 'OK.\n'

}

output_script_status()

{

	mb_step_name="${1##*/} : ${2}"

	mb_step_desc="${mb_package} : ${mb_step_name}"

	printf "configure info: ${2}\n" >&3

	printf "%s\n" "${mb_step_desc}"

}

output_section_break()

{

	printf ' ..\n'

}

verify_safe_path()

{

	case "$mb_safe_path_name" in

		-*)

			error_msg "$mb_safe_path_desc may not begin with a hyphen."

			exit 2

			;;

		*\ *)

			error_msg "$mb_safe_path_desc may not contain spaces."

			exit 2

			;;

	esac

}

init_log()

{

	exec 3> config.log

	printf "This is config.log, generated by sofort's configure script.\n\n" >&3

	printf '$ %s' "$mb_script" >&3

	for arg in $mb_args; do

		printf ' %s' "$arg" >&3

	done

	printf '\n\n' >&3

}

init_vars()

{

	mb_project_dir=$(cd -- "${mb_script%/*}/" ; pwd -P)

	mb_pwd=$(pwd -P)

	mb_safe_path_desc='project directory'

	mb_safe_path_name="$mb_project_dir"

	verify_safe_path

	mb_safe_path_desc='working directory'

	mb_safe_path_name="$mb_pwd"

	verify_safe_path

	mb_custom_cfgdefs_args=''

	mb_custom_cfgdefs_space=''

	mb_srcinfo='$(PROJECT_DIR)/project/srcdist/srcinfo.in'

	mb_srcsite='localhost'

	mb_pgprkey='!!VARIABLE_NOT_SET!!'

	mb_pgpskey='!!VARIABLE_NOT_SET!!'

	sfrt_impl_dir=$mb_project_dir/sofort

	sfrt_config_dir=$sfrt_impl_dir/config

	sfrt_core_dir=$sfrt_impl_dir/core

	sfrt_config_vars=$sfrt_config_dir/config.vars

	sfrt_flag_vars=$sfrt_config_dir/flag.vars

	sfrt_opt_vars=$sfrt_config_dir/opt.vars

	sfrt_cfgdefs_in=$sfrt_config_dir/cfgdefs.in

	mb_make_vars=$(< "$sfrt_config_vars" \

		grep -v -e '^#' -e '^$' | tr '[:lower:]' '[:upper:]')

	mb_impl_vars=$(< "$sfrt_config_vars" \

		grep -v -e '^#' -e '^$' | sed 's/^/mb_/g')

	mb_proj_vars=$(< "$sfrt_config_vars" \

		grep -v -e '^#' -e '^$' | sed 's/^/mb_default_/g')

	mb_flag_vars=$(< "$sfrt_flag_vars" \

		grep -v -e '^#' -e '^$')

	mb_vars="$mb_make_vars $mb_impl_vars $mb_proj_vars $mb_flag_vars"

	for mb_var in $(printf '%s' "$mb_vars") ; do

		mb_expr=$mb_var='${'$mb_var':-}'

		eval "$mb_expr"

	done

	# ccenv

	. $mb_project_dir/sofort/ccenv/ccenv.sh

	if ! [ -L ./ccenv ]; then

		if [ -d ./ccenv ]; then

			rm -f ./ccenv/host.mk

			rm -f ./ccenv/native.mk

			rmdir ./ccenv

		fi

	fi

	# config.project

	if [ -z "$mb_config" ]; then

		mb_config="$mb_project_dir/config.project"

	fi

	. "$mb_config"

	# package

	if [ -z "$mb_package" ]; then

		error_msg "$mb_script: incomplete information in $mb_config."

		error_msg "$mb_script: \$mb_package not set."

		exit 1

	fi

	# srcinfo

	if [ -n "$SOURCE_DIR" ]; then

		mb_source_dir_set=yes

	fi

	# step prolog

	output_step_prolog ${mb_script} 'init_vars'

	# project

	mb_nickname=$NICKNAME

	mb_source_dir=$SOURCE_DIR

	# dirs

	mb_prefix=$PREFIX

	mb_exec_prefix=$EXEC_PREFIX

	mb_bindir=$BINDIR

	mb_sbindir=$SBINDIR

	mb_libdir=$LIBDIR

	mb_includedir=$INCLUDEDIR

	mb_oldincludedir=$OLDINCLUDEDIR

	mb_mandir=$MANDIR

	mb_docdir=$DOCDIR

	mb_libexecdir=$LIBEXECDIR

	mb_sysconfdir=$SYSCONFDIR

	mb_sharedstatedir=$SHAREDSTATEDIR

	mb_localstatedir=$LOCALSTATEDIR

	mb_runstatedir=$RUNSTATEDIR

	mb_datarootdir=$DATAROOTDIR

	mb_datadir=$DATADIR

	mb_infodir=$INFODIR

	mb_localedir=$LOCALEDIR

	mb_htmldir=$HTMLDIR

	mb_dvidir=$DVIDIR

	mb_pdfdir=$PDFDIR

	mb_psdir=$PSDIR

	# make

	mb_make=$MAKE

	mb_makemode=$MAKEMODE

	# build

	mb_build=$BUILD

	mb_cchost=$CCHOST

	mb_cfghost=$CFGHOST

	mb_arch=$ARCH

	mb_compiler=$COMPILER

	mb_toolchain=$TOOLCHAIN

	mb_sysroot=$SYSROOT

	mb_cross_compile=$CROSS_COMPILE

	mb_shell=$SHELL

	# switches

	mb_cflags=$CFLAGS

	mb_cflags_debug=$CFLAGS_DEBUG

	mb_cflags_common=$CFLAGS_COMMON

	mb_cflags_cmdline=$CFLAGS_CMDLINE

	mb_cflags_config=$CFLAGS_CONFIG

	mb_cflags_sysroot=$CFLAGS_SYSROOT

	mb_cflags_os=$CFLAGS_OS

	mb_cflags_site=$CFLAGS_SITE

	mb_cflags_path=$CFLAGS_PATH

	mb_cflags_strict=$CFLAGS_STRICT

	mb_cflags_util=$CFLAGS_UTIL

	mb_cflags_last=$CFLAGS_LAST

	mb_cflags_once=$CFLAGS_ONCE

	mb_ldflags=$LDFLAGS

	mb_ldflags_debug=$LDFLAGS_DEBUG

	mb_ldflags_common=$LDFLAGS_COMMON

	mb_ldflags_cmdline=$LDFLAGS_CMDLINE

	mb_ldflags_config=$LDFLAGS_CONFIG

	mb_ldflags_sysroot=$LDFLAGS_SYSROOT

	mb_ldflags_path=$LDFLAGS_PATH

	mb_ldflags_strict=$LDFLAGS_STRICT

	mb_ldflags_util=$LDFLAGS_UTIL

	mb_ldflags_last=$LDFLAGS_LAST

	mb_ldflags_once=$LDFLAGS_ONCE

	mb_pe_subsystem=$PE_SUBSYSTEM

	mb_pe_image_base=$PE_IMAGE_BASE

	# overrides

	mb_user_cc=$CC

	mb_user_cpp=$CPP

	mb_user_cxx=$CXX

	mb_native_cc=$NATIVE_CC

	mb_native_cpp=$NATIVE_CPP

	mb_native_cxx=$NATIVE_CXX

	mb_native_host=$NATIVE_HOST

	mb_native_cfghost=$NATIVE_CFGHOST

	mb_native_cflags=$NATIVE_CFLAGS

	mb_native_ldflags=$NATIVE_LDFLAGS

	mb_native_pe_subsystem=$NATIVE_PE_SUBSYSTEM

	mb_native_pe_image_base=$NATIVE_PE_IMAGE_BASE

	# step epilog

	output_step_epilog

}

verify_build_directory()

{

	output_step_prolog ${mb_script} 'verify_build_directory'

	if [ "$mb_project_dir" = "$mb_pwd" ]; then

		if [ _$mb_require_out_of_tree = _yes ]; then

			error_msg "$mb_package: out-of-tree builds are required."

			error_msg "please invoke configure again from a clean build directory."

			exit 1

		else

			mb_project_dir='.'

		fi

	fi

	rm -f Makefile Makefile.host Makefile.tmp Makefile.failed

	output_step_epilog

}

verify_source_directory()

{

	output_step_prolog ${mb_script} 'verify_source_directory'

	if [ _"$mb_source_dir" != _${mb_source_dir##* } ]; then

		error_msg "source directory path contains spaces, aborting."

		exit 1

	fi

	eval mb_source_dir=$(printf '%s' "$mb_source_dir")

	if [ -z "$mb_source_dir" ]; then

		if [ _$mb_require_source_dir = _yes ]; then

			error_msg "$mb_package: specifying an external source directory is required."

			error_msg "you can set the source directory either via --source-dir=<path>,"

			error_msg "or by setting the SOURCE_DIR variable."

			exit 1

		fi

	fi

	output_step_epilog

}

verify_source_info()

{

	output_step_prolog ${mb_script} 'verify_source_info'

	if [ "${mb_source_dir_set:-}" = yes ]; then

		if [ -n "$mb_rawball" ] || [ -n "$mb_modball" ] || [ -n "$mb_srcball" ]; then

			error_msg "$mb_package: conflicting arguments: --rawball/--modball/--srcball arguments"

			error_msg "may not be used together with an explicit source-dir argument or variable."

			exit 1

		fi

	fi

	if [ -n "$mb_srcball" ]; then

		eval mb_srcball=$(printf '%s' "$mb_srcball")

		if [ -n "$mb_rawball" ] || [ -n "$mb_modball" ]; then

			error_msg "$mb_package: conflicting arguments: --rawball and/or --modball arguments"

			error_msg "may not be used together with an explicitly --srcball argument."

			exit 1

		fi

		if [ -z "$mb_srcball_sha256" ]; then

			error_msg "$mb_package: --srcball-sha256 must be provided"

			error_msg "in conjunction with --srcball."

			exit 1

		fi

		mb_srcball_sha256_test=$(sha256sum "$mb_srcball")

		mb_srcball_sha256_test="${mb_srcball_sha256_test%% *}"

		if [ "$mb_srcball_sha256_test" != "$mb_srcball_sha256" ]; then

			error_msg "$mb_package: sha256 signature of srcball $mb_srcball does not match!"

			exit 1

		fi

		mb_srcball_topdir=$(xz -c -d "$mb_srcball" | pax | sed -n '1,1p')

		mb_source_dir="./srctree/$mb_package/${mb_srcball_topdir%/}"

		mb_srcball_dirname=$(cd -- "${mb_srcball%/*}" ; pwd -P)

		mb_srcball_basename=${mb_srcball##*/}

		mb_srcball="$mb_srcball_dirname/$mb_srcball_basename"

		mkdir -p "./srctree/$mb_package"

		mb_dummy=$(cd -- "./srctree/$mb_package"; xz -c -d "$mb_srcball" | pax -r)

		mb_source_dir=$(cd -- $mb_source_dir; pwd -P)

	fi

	if [ -z "$mb_rawball" ] && [ -n "$mb_modball" ]; then

		error_msg "$mb_package: conflicting arguments: --modball argument may only be used"

		error_msg "together with an explicit --rawball argument."

		exit 1

	fi

	if [ -n "$mb_modball" ]; then

		eval mb_modball=$(printf '%s' "$mb_modball")

		if [ -z "$mb_modball_sha256" ]; then

			error_msg "$mb_package: --modball-sha256 must be provided"

			error_msg "in conjunction with --modball."

			exit 1

		fi

		mb_modball_sha256_test=$(sha256sum "$mb_modball")

		mb_modball_sha256_test="${mb_modball_sha256_test%% *}"

		if [ "$mb_modball_sha256_test" != "$mb_modball_sha256" ]; then

			error_msg "$mb_package: sha256 signature of modball $mb_modball does not match!"

			exit 1

		fi

	fi

	if [ -n "$mb_rawball" ]; then

		eval mb_rawball=$(printf '%s' "$mb_rawball")

		if [ -z "$mb_rawball_sha256" ]; then

			error_msg "$mb_package: --rawball-sha256 must be provided."

			error_msg "in conjunction with --rawball."

			exit 1

		fi

		mb_rawball_sha256_test=$(sha256sum "$mb_rawball")

		mb_rawball_sha256_test="${mb_rawball_sha256_test%% *}"

		if [ "$mb_rawball_sha256_test" != "$mb_rawball_sha256" ]; then

			error_msg "$mb_package: sha256 signature of rawball $mb_rawball does not match!"

			exit 1

		fi

		mb_rawball_topdir=$(xz -c -d "$mb_rawball" | pax | sed -n '1,1p')

		mb_source_dir="./srctree/$mb_package/${mb_rawball_topdir%/}"

		mb_rawball_dirname=$(cd -- "${mb_rawball%/*}" ; pwd -P)

		mb_rawball_basename=${mb_rawball##*/}

		mb_rawball="$mb_rawball_dirname/$mb_rawball_basename"

		mkdir -p "./srctree/$mb_package"

		mb_dummy=$(cd -- "./srctree/$mb_package"; xz -c -d "$mb_rawball" | pax -r)

		mb_source_dir=$(cd -- $mb_source_dir; pwd -P)

	fi

	if [ -n "$mb_modball" ]; then

		mb_modball_dirname=$(cd -- "${mb_modball%/*}" ; pwd -P)

		mb_modball_basename=${mb_modball##*/}

		mb_modball="$mb_modball_dirname/$mb_modball_basename"

		mb_modball_topdir="./modtree/$mb_package/$mb_modball_sha256"

		mkdir -p "$mb_modball_topdir"

		mb_modball_topdir=$(cd -- $mb_modball_topdir; pwd -P)

		mb_dummy=$(cd -- "$mb_modball_topdir"; xz -c -d "$mb_modball" | pax -r)

		if [ -d "$mb_modball_topdir/overlay" ]; then

			mb_dummy=$(cd -- "$mb_modball_topdir/overlay"; \

				cp -p -P -R . "$mb_source_dir")

		fi

		if [ -d "$mb_modball_topdir/patches" ]; then

			mb_dummy=$(cd -- "$mb_source_dir";                        \

				for p in $mb_modball_topdir/patches/*.patch; do  \

					patch -p1 < $p;                         \

				done);

		fi

	fi

	output_step_epilog

}

common_defaults()

{

	# step prolog

	output_step_prolog ${mb_script} 'common_defaults'

	# project-specific config definitions

	if [ _$mb_use_custom_cfgdefs = _yes ]; then

		cat $sfrt_cfgdefs_in > cfgdefs.mk

	else

		printf '%s %s\n\n' \

				'# this project does not include' \

				'a custom config step.'           \

			> cfgdefs.mk

		cat $sfrt_cfgdefs_in >> cfgdefs.mk

		if [ -f $mb_project_dir/project/cfgdefs.in ]; then

			cat $mb_project_dir/project/cfgdefs.in >> cfgdefs.mk

		fi

	fi

	# user build-time overrides

	touch usrdefs.mk

	# git

	if [ -n "$mb_source_dir" ]; then

		if [ -d "$mb_source_dir/.git" ]; then

			mb_git_reference_index="\$(SOURCE_DIR)/.git/index"

		fi

	elif [ -d "$mb_project_dir/.git" ]; then

		mb_git_reference_index="\$(PROJECT_DIR)/.git/index"

	fi

	# project

	[ -n "$mb_nickname" ] 		|| mb_nickname=$mb_package

	[ -n "$mb_source_dir" ] 	|| mb_source_dir=$mb_project_dir

	[ -n "$mb_avoid_version" ] 	|| mb_avoid_version='no'

	# pkgconfig

	[ -n "$mb_pkgname" ]		|| mb_pkgname="$mb_default_pkgname"

	[ -n "$mb_pkgdesc" ]		|| mb_pkgdesc="$mb_default_pkgdesc"

	[ -n "$mb_pkgusrc" ]		|| mb_pkgusrc="$mb_default_pkgusrc"

	[ -n "$mb_pkgrepo" ]		|| mb_pkgrepo="$mb_default_pkgrepo"

	[ -n "$mb_pkgpsrc" ]		|| mb_pkgpsrc="$mb_default_pkgpsrc"

	[ -n "$mb_pkgdurl" ]		|| mb_pkgdurl="$mb_default_pkgdurl"

	[ -n "$mb_pkgbugs" ]		|| mb_pkgbugs="$mb_default_pkgbugs"

	[ -n "$mb_pkghome" ]		|| mb_pkghome="$mb_default_pkghome"

	[ -n "$mb_pkgdefs" ]		|| mb_pkgdefs="$mb_default_pkgdefs"

	[ -n "$mb_pkglibs" ]		|| mb_pkglibs="$mb_default_pkglibs"

	# srcinfo

	[ -n "$mb_rawball" ]		|| mb_rawball="$mb_default_rawball"

	[ -n "$mb_rawball_url" ]	|| mb_rawball_url="$mb_default_rawball_url"

	[ -n "$mb_rawball_sha256" ]	|| mb_rawball_sha256="$mb_default_rawball_sha256"

	[ -n "$mb_modball" ]		|| mb_modball="$mb_default_modball"

	[ -n "$mb_modball_url" ]	|| mb_modball_url="$mb_default_modball_url"

	[ -n "$mb_modball_sha256" ]	|| mb_modball_sha256="$mb_default_modball_sha256"

	[ -n "$mb_srcball" ]		|| mb_srcball="$mb_default_srcball"

	[ -n "$mb_srcball_url" ]	|| mb_srcball_url="$mb_default_srcball_url"

	[ -n "$mb_srcball_sha256" ]	|| mb_srcball_sha256="$mb_default_srcball_sha256"

	# dirs

	[ -n "$mb_prefix" ] 		|| [ -n "$mb_prefix_set" ] \

					|| mb_prefix='/usr/local'

	[ -n "$mb_exec_prefix" ] 	|| [ -n "$mb_exec_prefix_set" ]	\

					|| mb_exec_prefix=$mb_prefix

	[ -n "$mb_bindir" ] 		|| [ -n "$mb_bindir_set" ] \

					|| [ -n "$mb_bindir_basename" ] \

					|| mb_bindir=$mb_exec_prefix/bin

	[ -n "$mb_bindir" ] 		|| [ -n "$mb_bindir_set" ] \

					|| mb_bindir=$mb_exec_prefix/$mb_bindir_basename

	[ -n "$mb_sbindir" ] 		|| mb_sbindir=$mb_exec_prefix/sbin

	[ -n "$mb_libdir" ] 		|| mb_libdir=$mb_exec_prefix/lib

	[ -n "$mb_includedir" ]		|| mb_includedir=$mb_prefix/include

	[ -n "$mb_oldincludedir" ]	|| mb_oldincludedir=$mb_prefix/include

	[ -n "$mb_datarootdir" ] 	|| mb_datarootdir=$mb_prefix/share

	[ -n "$mb_mandir" ] 		|| mb_mandir=$mb_datarootdir/man

	[ -n "$mb_docdir" ] 		|| mb_docdir=$mb_datarootdir/doc

	[ -n "$mb_libexecdir" ]		|| mb_libexecdir=$mb_exec_prefix/libexec

	[ -n "$mb_sysconfdir" ] 	|| mb_sysconfdir=$mb_exec_prefix/etc

	[ -n "$mb_sharedstatedir" ] 	|| mb_sharedstatedir=$mb_prefix/com

	[ -n "$mb_localstatedir" ] 	|| mb_localstatedir=$mb_prefix/var

	[ -n "$mb_runstatedir" ] 	|| mb_runstatedir=$mb_localstatedir/run

	[ -n "$mb_datarootdir" ] 	|| mb_datarootdir=$mb_prefix/share

	[ -n "$mb_datadir" ] 		|| mb_datadir=$mb_datarootdir

	[ -n "$mb_infodir" ] 		|| mb_infodir=$mb_datarootdir/info

	[ -n "$mb_localedir" ] 		|| mb_localedir=$mb_datarootdir/locale

	[ -n "$mb_htmldir" ] 		|| mb_htmldir=$mb_docdir

	[ -n "$mb_dvidir" ] 		|| mb_dvidir=$mb_docdir

	[ -n "$mb_pdfdir" ] 		|| mb_pdfdir=$mb_docdir

	[ -n "$mb_psdir" ] 		|| mb_psdir=$mb_docdir

	# switches

	[ -n "$mb_cflags_debug" ]	|| mb_cflags_debug=$mb_default_cflags_debug

	[ -n "$mb_cflags_common" ]	|| mb_cflags_common=$mb_default_cflags_common

	[ -n "$mb_cflags_cmdline" ]	|| mb_cflags_cmdline=$mb_default_cflags_cmdline

	[ -n "$mb_cflags_config" ]	|| mb_cflags_config=$mb_default_cflags_config

	[ -n "$mb_cflags_sysroot" ]	|| mb_cflags_sysroot=$mb_default_cflags_sysroot

	[ -n "$mb_cflags_os" ]		|| mb_cflags_os=$mb_default_cflags_os

	[ -n "$mb_cflags_site" ]	|| mb_cflags_site=$mb_default_cflags_site

	[ -n "$mb_cflags_path" ]	|| mb_cflags_path=$mb_default_cflags_path

	[ -n "$mb_cflags_strict" ]	|| mb_cflags_strict=$mb_default_cflags_strict

	[ -n "$mb_cflags_util" ]	|| mb_cflags_util=$mb_default_cflags_util

	[ -n "$mb_cflags_last" ]	|| mb_cflags_last=$mb_default_cflags_last

	[ -n "$mb_cflags_once" ]	|| mb_cflags_once=$mb_default_cflags_once

	[ -n "$mb_ldflags_debug" ]	|| mb_ldflags_debug=$mb_default_ldflags_debug

	[ -n "$mb_ldflags_common" ]	|| mb_ldflags_common=$mb_default_ldflags_common

	[ -n "$mb_ldflags_cmdline" ]	|| mb_ldflags_cmdline=$mb_default_ldflags_cmdline

	[ -n "$mb_ldflags_config" ]	|| mb_ldflags_config=$mb_default_ldflags_config

	[ -n "$mb_ldflags_sysroot" ]	|| mb_ldflags_sysroot=$mb_default_ldflags_sysroot

	[ -n "$mb_ldflags_path" ]	|| mb_ldflags_path=$mb_default_ldflags_path

	[ -n "$mb_ldflags_strict" ]	|| mb_ldflags_strict=$mb_default_ldflags_strict

	[ -n "$mb_ldflags_util" ]	|| mb_ldflags_util=$mb_default_ldflags_util

	[ -n "$mb_ldflags_last" ]	|| mb_ldflags_last=$mb_default_ldflags_last

	[ -n "$mb_ldflags_once" ]	|| mb_ldflags_once=$mb_default_ldflags_once

	# native switches

	[ -n "$mb_native_cflags" ]	|| mb_native_cflags=$mb_default_native_cflags

	[ -n "$mb_native_ldflags" ]	|| mb_native_ldflags=$mb_default_native_ldflags

	# config

	[ -n "$mb_all_static" ]		|| mb_all_static='no'

	[ -n "$mb_all_shared" ]		|| mb_all_shared='no'

	[ -n "$mb_disable_frontend" ]	|| mb_disable_frontend='no'

	[ -n "$mb_disable_static" ]	|| mb_disable_static='no'

	[ -n "$mb_disable_shared" ]	|| mb_disable_shared='no'

	# host/target

	[ -n "$mb_host" ] 		|| mb_host=$mb_target

	[ -n "$mb_target" ] 		|| mb_target=$mb_host

	# sysroot

	if [ -n "$mb_sysroot" ]; then

		if [ -z "$mb_cflags_sysroot" ]; then

			mb_cflags_sysroot="--sysroot=$mb_sysroot"

		fi

		if [ -z "$mb_ldflags_sysroot" ]; then

			mb_ldflags_sysroot="--sysroot=$mb_sysroot"

		fi

	fi

	# debug

	if [ _$mb_debug = _yes ]; then

		if [ -z "$mb_cflags_debug" ]; then

			mb_cflags_debug='-g3 -O0'

		fi

	fi

	# make

	if [ -z "$mb_make" ]; then

		mb_make='make'

	fi

	if [ -z "$mb_makemode" ]; then

		mb_makemode='posix'

		printf '%s\n%s\n%s\n\n%s\n\n'        \

				'ifeq (a,b)'          \

				'VAR = val'            \

				'endif'                 \

				'all:'                   \

			| ${mb_make} -s -f - 2>/dev/null  \

		&& mb_makemode='modern'

	fi

	# shell

	if [ -z "$mb_shell" ]; then

		mb_shell='/bin/sh'

	fi

	# inherited cflags & ldflags

	mb_cflags_cmdline="$mb_cflags_cmdline $mb_cflags"

	mb_ldflags_cmdline="$mb_ldflags_cmdline $mb_ldflags"

	# add the prefix's library directory to the linker library path

	mb_ldflags_last="$mb_ldflags_last -L$mb_libdir"

	# step epilog

	output_step_epilog

}

config_flags()

{

	# step prolog

	output_step_prolog ${mb_script} 'config_flags'

	mb_ldflags_tmp=" $mb_ldflags "

	mb_ldflags_libs=$(printf '%s' "$mb_ldflags_tmp" | sed 's/ -static / /g')

	if [ "$mb_ldflags_tmp" != "$mb_ldflags_libs" ]; then

		mb_ldflags="$mb_ldflags_libs"

		mb_ldflags_util="$mb_ldflags_util -static"

	fi

	# ccstrict

	if [ _$mb_ccstrict = _yes ]; then

		mb_cflags_strict='-Wall -Werror -Wextra -Wundef'

	fi

	# ldstrict

	if [ _$mb_ldstrict = _yes ]; then

		mb_ldflags_strict='-Wl,--no-undefined'

	fi

	# step epilog

	output_step_epilog

}

config_opts()

{

	if [ "$mb_avoid_version" = 'yes' ]; then

		mb_version_opt='none'

	else

		mb_version_opt='used'

	fi

	if [ "$mb_custom_install_headers" = 'yes' ]; then

		mb_install_headers_opt='custom'

	else

		mb_install_headers_opt='default'

	fi

	if [ "$mb_disable_static" = 'yes' ]; then

		mb_static_library_opt='disabled'

	else

		mb_static_library_opt='enabled'

	fi

	if [ "$mb_disable_shared" = 'yes' ]; then

		mb_shared_library_opt='disabled'

	else

		mb_shared_library_opt='enabled'

	fi

	if [ "$mb_disable_frontend" = 'yes' ]; then

		mb_app_frontend_opt='disabled'

	else

		mb_app_frontend_opt='enabled'

	fi

	if [ "$mb_all_static" = 'yes' ]; then

		mb_app_linking_opt='all_static'

	elif [ "$mb_all_shared" = 'yes' ]; then

		mb_app_linking_opt='all_shared'

	else

		mb_app_linking_opt='default'

	fi

}

config_copy()