build system: created skeleton.

1 files changed, 1130 insertions, 0 deletions

diff --git a/configure b/configure
new file mode 100755
index 0000000..62c2b11
--- /dev/null
+++ b/configure
@@ -0,0 +1,1130 @@
+#!/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=$sfrt_config_dir/flag.vars
+	sfrt_cfgdefs_in=$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
+		. $mb_project_dir/config.project
+	else
+		. "$mb_config"
+	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=$PSDIR
+
+
+	# build
+	mb_build=$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
+
+	# 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"
+
+	# 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_copy()
+{
+	output_step_prolog ${mb_script} 'config_copy'
+
+	mb_vars=$(cut -d'=' -f1 $sfrt_config_vars \
+			| grep -v '^#')
+
+	mb_sed_substs=" \
+		$(for __var in $(printf '%s' "$mb_vars"); do   \
+			printf '%s"$%s"%s' "-e 's^@$__var@^'" \
+				"mb_$__var" "'^g' ";           \
+		done)"
+
+	eval sed $mb_sed_substs \
+		$mb_project_dir/Makefile.in    \
+			| sed -e 's/[[:blank:]]*$//g' \
+			> $mb_pwd/Makefile.tmp
+
+	output_step_epilog
+}
+
+
+config_ccenv()
+{
+	mkdir -p ./ccenv
+	touch ./ccenv/host.mk
+	touch ./ccenv/native.mk
+
+	output_section_break
+	ccenv_set_host_variables
+
+	output_section_break
+	ccenv_set_native_variables
+
+	output_section_break
+	config_copy
+}
+
+config_custom_cfgdefs()
+{
+	. $mb_project_dir/project/config/cfgdefs.sh
+}
+
+config_custom()
+{
+	if [ _$mb_use_custom_cfgdefs = _yes ]; then
+		output_section_break
+		output_script_status ${mb_script} \
+			'invoking project-specific cfgdefs.sh'
+
+		eval config_custom_cfgdefs "$mb_custom_cfgdefs_args"
+
+		output_section_break
+		config_copy
+	fi
+
+	if [ _$mb_use_custom_usrdefs = _yes ]; then
+		output_section_break
+		output_script_status ${mb_scirpt} \
+			'invoking project-specific usrdefs.sh'
+
+		. $mb_project_dir/project/usrdefs.sh
+		output_section_break
+	fi
+}
+
+
+config_cfghost()
+{
+	output_step_prolog ${mb_script} 'config_cfghost'
+
+	if [ -z "$mb_cfghost" ]; then
+		mb_cfghost=$mb_cchost
+	fi
+
+	sed		-e 's^@cchost@^'"$mb_cchost"'^g'     \
+			-e 's^@cfghost@^'"$mb_cfghost"'^g'   \
+		$mb_pwd/Makefile.tmp > $mb_pwd/Makefile.host
+
+	rm  $mb_pwd/Makefile.tmp
+	mv  $mb_pwd/Makefile.host $mb_pwd/Makefile
+
+	output_step_epilog
+}
+
+
+config_host()
+{
+	output_step_prolog ${mb_script} 'config_host'
+
+	make -s host.tag             \
+		&& output_step_epilog \
+		&& return 0
+
+	error_msg "configure was able to generate a Makefile for the selected host,"
+	error_msg "however the host-targeting compiler was found to be missing"
+	error_msg "at least one of the required headers or features."
+	exit 2
+}
+
+
+config_status()
+{
+	output_script_status ${mb_script} \
+		'configuration completed successfully.'
+	printf '\n'
+}
+
+
+config_failure()
+{
+	if [ _$mb_success = _yes ]; then
+		return 0
+	fi
+
+	printf 'configure info: exiting due to an error.\n' >&3
+
+	exit 2
+}
+
+
+config_success()
+{
+	trap '' EXIT
+	mb_success=yes
+	exit 0
+}
+
+
+# one: init
+mb_args=
+mb_args_space=
+
+for arg ; do
+	mb_escaped_arg=\'$(printf '%s\n' "$arg" | sed -e "s/'/'\\\\''/g")\'
+	mb_args="$mb_args$mb_args_space$mb_escaped_arg"
+	mb_args_space=' '
+done
+
+init_log
+init_vars
+verify_build_directory
+
+
+# two: args
+for arg ; do
+	case "$arg" in
+		--help)
+			usage
+			;;
+		--help=ccenv)
+			ccenv_usage
+			;;
+
+		# ccenv
+		--cross-compile=*)
+			mb_cross_compile=${arg#*=}
+			;;
+		--compiler=*)
+			mb_compiler=${arg#*=}
+			;;
+		--toolchain=*)
+			mb_toolchain=${arg#*=}
+			;;
+		--zealous)
+			mb_agnostic=yes
+			mb_zealous=
+			;;
+		--zealous=*)
+			mb_zealous=${arg#*=}
+			;;
+		--ccenv=*)
+			mb_ccenv=${arg#*=}
+			;;
+
+		# dirs
+		--prefix=*)
+			mb_prefix_set=yes
+			mb_prefix=${arg#*=}
+			;;
+		--exec-prefix=*)
+			mb_exec_prefix_set=yes
+			mb_exec_prefix=${arg#*=}
+			;;
+		--bindir=*)
+			mb_bindir_set=yes
+			mb_bindir=${arg#*=}
+			;;
+		--sbindir=*)
+			mb_sbindir=${arg#*=}
+			;;
+		--libdir=*)
+			mb_libdir=${arg#*=}
+			;;
+		--includedir=*)
+			mb_includedir=${arg#*=}
+			;;
+		--oldincludedir=*)
+			mb_oldincludedir=${arg#*=}
+			;;
+		--mandir=*)
+			mb_mandir=${arg#*=}
+			;;
+		--libexecdir=*)
+			mb_libexecdir=${arg#*=}
+			;;
+
+
+		--sysconfdir=*)
+			mb_sysconfdir=${arg#*=}
+			;;
+		--sharedstatedir=*)
+			mb_sharedstatedir=${arg#*=}
+			;;
+		--localstatedir=*)
+			mb_localstatedir=${arg#*=}
+			;;
+		--runstatedir=*)
+			mb_runstatedir=${arg#*=}
+			;;
+		--datarootdir=*)
+			mb_datarootdir=${arg#*=}
+			;;
+		--datadir=*)
+			mb_datadir=${arg#*=}
+			;;
+		--infodir=*)
+			mb_infodir=${arg#*=}
+			;;
+		--localedir=*)
+			mb_localedir=${arg#*=}
+			;;
+		--htmldir=*)
+			mb_htmldir=${arg#*=}
+			;;
+		--dvidir=*)
+			mb_dvidir=${arg#*=}
+			;;
+		--pdfdir=*)
+			mb_pdfdir=${arg#*=}
+			;;
+		--psdir=*)
+			mb_psdir=${arg#*=}
+			;;
+
+
+		# build
+		--build=*)
+			mb_build=${arg#*=}
+			;;
+		--host=*)
+			mb_host=${arg#*=}
+			;;
+		--cchost=*)
+			mb_cchost=${arg#*=}
+			;;
+		--cfghost=*)
+			mb_cfghost=${arg#*=}
+			;;
+		--target=*)
+			mb_target=${arg#*=}
+			;;
+		--arch=*)
+			mb_arch=${arg#*=}
+			;;
+		--sysroot=*)
+			mb_sysroot=${arg#*=}
+			;;
+		--shell=*)
+			mb_shell=${arg#*=}
+			;;
+		--debug)
+			mb_debug=yes
+			;;
+
+		# config
+		--all-static)
+			mb_all_static=yes
+			mb_all_shared=no
+			;;
+		--all-shared)
+			mb_all_shared=yes
+			mb_all_static=no
+			;;
+		--disable-frontend)
+			mb_disable_frontend=yes
+			;;
+		--disable-app)
+			mb_disable_frontend=yes
+			;;
+		--enable-frontend)
+			mb_disable_frontend='no'
+			;;
+		--enable-app)
+			mb_disable_frontend='no'
+			;;
+		--disable-static)
+			mb_disable_static=yes
+			;;
+		--disable-shared)
+			mb_disable_shared=yes
+			;;
+		--enable-static)
+			mb_disable_static='no'
+			;;
+		--enable-shared)
+			mb_disable_shared='no'
+			;;
+
+		# convenience
+		--strict)
+			mb_ccstrict=yes
+			mb_ldstrict=yes
+			;;
+		--ccstrict)
+			mb_ccstrict=yes
+			;;
+		--ldstrict)
+			mb_ldstrict=yes
+			;;
+
+		# project
+		--nickname=*)
+			mb_nickname=${arg#*=}
+			;;
+		--program-prefix=*)
+			mb_program_prefix=${arg#*=}
+			;;
+		--avoid-version)
+			mb_avoid_version=yes
+			;;
+		--source-dir=*)
+			mb_source_dir=${arg#*=}
+			mb_source_dir_set=yes
+			;;
+		--srcdir=*)
+			mb_source_dir=${arg#*=}
+			mb_source_dir_set=yes
+			;;
+
+		# pkgconfig
+		--pkgname=*)
+			mb_pkgname=${arg#*=}
+			;;
+
+		--pkgdesc=*)
+			mb_pkgdesc=${arg#*=}
+			;;
+
+		--pkgusrc=*)
+			mb_pkgusrc=${arg#*=}
+			;;
+
+		--pkgrepo=*)
+			mb_pkgrepo=${arg#*=}
+			;;
+
+		--pkgpsrc=*)
+			mb_pkgpsrc=${arg#*=}
+			;;
+
+		--pkgdurl=*)
+			mb_pkgdurl=${arg#*=}
+			;;
+
+		--pkgbugs=*)
+			mb_pkgbugs=${arg#*=}
+			;;
+
+		--pkghome=*)
+			mb_pkghome=${arg#*=}
+			;;
+
+		--pkgdefs=*)
+			mb_pkgdefs=${arg#*=}
+			;;
+
+		--pkglibs=*)
+			mb_pkglibs=${arg#*=}
+			;;
+
+		# srcinfo
+		--srcinfo=*)
+			mb_srcinfo=${arg#*=}
+			;;
+
+		--srcsite=*)
+			mb_srcsite=${arg#*=}
+			;;
+
+		--pgprkey=*)
+			mb_pgprkey=${arg#*=}
+			;;
+
+		--pgpskey=*)
+			mb_pgpskey=${arg#*=}
+			;;
+
+		--rawball=*)
+			mb_rawball=${arg#*=}
+			;;
+
+		--rawball-url=*)
+			mb_rawball_url=${arg#*=}
+			;;
+
+		--rawball-sha256=*)
+			mb_rawball_sha256=${arg#*=}
+			;;
+
+		--modball=*)
+			mb_modball=${arg#*=}
+			;;
+
+		--modball-url=*)
+			mb_modball_url=${arg#*=}
+			;;
+
+		--modball-sha256=*)
+			mb_modball_sha256=${arg#*=}
+			;;
+
+		--srcball=*)
+			mb_srcball=${arg#*=}
+			;;
+
+		--srcball-url=*)
+			mb_srcball_url=${arg#*=}
+			;;
+
+		--srcball-sha256=*)
+			mb_srcball_sha256=${arg#*=}
+			;;
+
+		# compatibility
+		--enable-dependency-tracking)
+			;;
+		--disable-dependency-tracking)
+			;;
+
+		*)
+			if [ _$mb_use_custom_cfgdefs = _yes ]; then
+				mb_escaped_arg=\'$(printf '%s\n' "$arg" | sed -e "s/'/'\\\\''/g")\'
+				mb_escaped_arg="$mb_custom_cfgdefs_space$mb_escaped_arg"
+				mb_custom_cfgdefs_args="$mb_custom_cfgdefs_args$mb_escaped_arg"
+				mb_custom_cfgdefs_space=' '
+			else
+				error_msg ${arg#}: "unsupported config argument."
+				exit 2
+			fi
+			;;
+	esac
+
+	mb_safe_path_desc='source directory'
+	mb_safe_path_name="$mb_source_dir"
+	verify_safe_path
+done
+
+
+
+# three: validation
+verify_source_directory
+verify_source_info
+
+if ! [ -z "$mb_program_prefix" ]; then
+	error_msg "--program-prefix is not yet fully support (must be null)."
+fi
+
+
+
+# four: defaults
+common_defaults
+
+
+# five: config
+config_flags
+config_copy
+config_ccenv
+config_custom
+config_cfghost
+config_host
+config_status
+
+
+# all done
+config_success