build system: created skeleton.

35 files changed, 4109 insertions, 0 deletions

diff --git a/COPYING.SOFORT b/COPYING.SOFORT
new file mode 100644
index 0000000..14e1f1b
--- /dev/null
+++ b/COPYING.SOFORT
@@ -0,0 +1,56 @@
+/*****************************************************************************/
+/*                                                                           */
+/*  sofort: portable software project skeleton                               */
+/*                                                                           */
+/*  Copyright (C) 2015--2020  Z. Gilboa                                      */
+/*                                                                           */
+/*  sofort provides a build system that can be incorporated into Works       */
+/*  which may or may not be covered by a copyleft license. THE FOLLOWING     */
+/*  LICENSE THEREFORE GOVERNS ONLY THOSE FILES WHICH ARE EXPLICITLY          */
+/*  LISTED HEREWITHIN.                                                       */
+/*                                                                           */
+/* ./configure                                                               */
+/* ./config.usage                                                            */
+/* ./Makefile.in                                                             */
+/*                                                                           */
+/* ./sofort/ccenv/ccenv.in                                                   */
+/* ./sofort/ccenv/ccenv.usage                                                */
+/* ./sofort/ccenv/ccenv.vars                                                 */
+/* ./sofort/ccenv/pedefs.in                                                  */
+/* ./sofort/ccenv/ccenv.sh                                                   */
+/* ./sofort/cfgtest/cfgtest.sh                                               */
+/* ./sofort/config/cfgdefs.in                                                */
+/* ./sofort/config/config.vars                                               */
+/* ./sofort/config/flag.vars                                                 */
+/* ./sofort/core/defs.mk                                                     */
+/* ./sofort/core/flavor.mk                                                   */
+/* ./sofort/core/pkgconf.mk                                                  */
+/* ./sofort/core/version.mk                                                  */
+/* ./sofort/exrules/default.mk                                               */
+/* ./sofort/exrules/pe-common.mk                                             */
+/* ./sofort/exrules/pe-dlltool.mk                                            */
+/* ./sofort/exrules/pe-mdso.mk                                               */
+/* ./sofort/exrules/pe-version.mk                                            */
+/* ./sofort/tools/pkgconf.sh                                                 */
+/* ./sofort/tools/version.sh                                                 */
+/*                                                                           */
+/*  Permission is hereby granted, free of charge, to any person obtaining    */
+/*  a copy of this software and associated documentation files (the          */
+/*  "Software"), to deal in the Software without restriction, including      */
+/*  without limitation the rights to use, copy, modify, merge, publish,      */
+/*  distribute, sublicense, and/or sell copies of the Software, and to       */
+/*  permit persons to whom the Software is furnished to do so, subject to    */
+/*  the following conditions:                                                */
+/*                                                                           */
+/*  The above copyright notice and this permission notice shall be included  */
+/*  in all copies or substantial portions of the Software.                   */
+/*                                                                           */
+/*  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS  */
+/*  OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF               */
+/*  MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.   */
+/*  IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY     */
+/*  CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,     */
+/*  TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE        */
+/*  SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                   */
+/*                                                                           */
+/*****************************************************************************/
diff --git a/Makefile.in b/Makefile.in
new file mode 100644
index 0000000..aacac6a
--- /dev/null
+++ b/Makefile.in
@@ -0,0 +1,332 @@
+# Makefile.in: primary common build logic.
+# this file is covered by COPYING.SOFORT.
+
+PACKAGE 		= @package@
+NICKNAME 		= @nickname@
+PROJECT_DIR 		= @project_dir@
+SOURCE_DIR 		= @source_dir@
+GIT_REFERENCE_INDEX	= @git_reference_index@
+CUSTOM_INSTALL_HEADERS  = @custom_install_headers@
+AVOID_VERSION		= @avoid_version@
+
+PKGNAME			= @pkgname@
+PKGDESC			= @pkgdesc@
+PKGUSRC			= @pkgusrc@
+PKGREPO			= @pkgrepo@
+PKGPSRC			= @pkgpsrc@
+PKGDURL			= @pkgdurl@
+PKGBUGS			= @pkgbugs@
+PKGHOME			= @pkghome@
+PKGDEFS			= @pkgdefs@
+PKGLIBS			= @pkglibs@
+
+SRCINFO			= @srcinfo@
+SRCSITE			= @srcsite@
+
+PGPRKEY			= @pgprkey@
+PGPSKEY			= @pgpskey@
+
+RAWBALL			= @rawball@
+RAWBALL_URL		= @rawball_url@
+RAWBALL_SHA256		= @rawball_sha256@
+MODBALL			= @modball@
+MODBALL_URL		= @modball_url@
+MODBALL_SHA256		= @modball_sha256@
+SRCBALL			= @srcball@
+SRCBALL_URL		= @srcball_url@
+SRCBALL_SHA256		= @srcball_sha256@
+
+BUILD 			= @build@
+HOST 			= @host@
+CCHOST 			= @cchost@
+CFGHOST 		= @cfghost@
+TARGET 			= @target@
+ARCH 			= @arch@
+COMPILER 		= @compiler@
+TOOLCHAIN		= @toolchain@
+SYSROOT 		= @sysroot@
+CROSS_COMPILE 		= @cross_compile@
+SHELL 			= @shell@
+
+PREFIX 			= @prefix@
+EXEC_PREFIX 		= @exec_prefix@
+BINDIR 			= @bindir@
+SBINDIR 		= @sbindir@
+LIBDIR 			= @libdir@
+INCLUDEDIR 		= @includedir@
+OLDINCLUDEDIR 		= @oldincludedir@
+MANDIR 			= @mandir@
+DOCDIR 			= @docdir@
+LIBEXECDIR 		= @libexecdir@
+
+SYSCONFDIR		= @sysconfdir@
+SHAREDSTATEDIR		= @sharedstatedir@
+LOCALSTATEDIR		= @localstatedir@
+RUNSTATEDIR		= @runstatedir@
+DATAROOTDIR		= @datarootdir@
+DATADIR			= @datadir@
+INFODIR			= @infodir@
+LOCALEDIR		= @localedir@
+HTMLDIR			= @htmldir@
+DVIDIR			= @dvidir@
+PDFDIR			= @pdfdir@
+PSDIR			= @psdir@
+
+CFLAGS_COMMON 		+= @cflags_common@
+CFLAGS_DEBUG 		+= @cflags_debug@
+CFLAGS_CMDLINE 		+= @cflags_cmdline@
+CFLAGS_CONFIG 		+= @cflags_config@
+CFLAGS_SYSROOT 		+= @cflags_sysroot@
+CFLAGS_OS		+= @cflags_os@
+CFLAGS_SITE		+= @cflags_site@
+CFLAGS_PATH 		+= @cflags_path@
+CFLAGS_STRICT 		+= @cflags_strict@
+CFLAGS_UTIL 		+= @cflags_util@
+CFLAGS_LAST 		+= @cflags_last@
+CFLAGS_ONCE 		+= @cflags_once@
+
+LDFLAGS_COMMON 		+= @ldflags_common@
+LDFLAGS_DEBUG 		+= @ldflags_debug@
+LDFLAGS_CMDLINE 	+= @ldflags_cmdline@
+LDFLAGS_CONFIG 		+= @ldflags_config@
+LDFLAGS_SYSROOT 	+= @ldflags_sysroot@
+LDFLAGS_PATH 		+= @ldflags_path@
+LDFLAGS_STRICT 		+= @ldflags_strict@
+LDFLAGS_UTIL 		+= @ldflags_util@
+LDFLAGS_LAST 		+= @ldflags_last@
+LDFLAGS_ONCE 		+= @ldflags_once@
+
+USER_CC                 = @user_cc@
+USER_CPP                = @user_cpp@
+USER_CXX                = @user_cxx@
+
+NATIVE_HOST		= @native_host@
+NATIVE_CFGHOST		= @native_cfghost@
+NATIVE_CFLAGS		= @native_cflags@
+NATIVE_LDFLAGS		= @native_ldflags@
+
+ALL_SHARED              = @all_shared@
+ALL_STATIC              = @all_static@
+DISABLE_FRONTEND	= @disable_frontend@
+DISABLE_SHARED          = @disable_shared@
+DISABLE_STATIC          = @disable_static@
+
+USE_CUSTOM_CFGDEFS      = @use_custom_cfgdefs@
+USE_CUSTOM_USRDEFS      = @use_custom_usrdefs@
+
+.cflags-host:
+	@printf '%s' "$(CFLAGS)"
+
+.cflags-native:
+	@printf '%s' "$(NATIVE_CFLAGS)"
+
+.SUFFIXES:
+
+all:
+install:
+shared:
+static:
+
+install-extras:
+install-app-extras:
+
+include ./ccenv/host.mk
+include ./ccenv/native.mk
+
+include ./cfgdefs.mk
+include ./usrdefs.mk
+
+include $(PROJECT_DIR)/sofort/core/defs.mk
+include $(PROJECT_DIR)/sofort/core/pkgconf.mk
+include $(PROJECT_DIR)/sofort/core/version.mk
+include $(PROJECT_DIR)/sofort/core/flavor.mk
+
+include $(PROJECT_DIR)/project/osforce.mk
+include $(PROJECT_DIR)/project/tree.mk
+include $(PROJECT_DIR)/project/depends.mk
+include $(PROJECT_DIR)/project/headers.mk
+include $(PROJECT_DIR)/project/common.mk
+include $(PROJECT_DIR)/project/arch.mk
+include $(PROJECT_DIR)/project/extras.mk
+include $(PROJECT_DIR)/project/overrides.mk
+
+
+$(APP_SRCS:%.c=%.o): CFLAGS_STATIC = $(CFLAGS_APP)
+
+src/%.lo: 	$(SOURCE_DIR)/src/%.c $(ALL_HEADERS) host.tag tree.tag
+		$(CC) -c -o $@ $< $(CFLAGS_SHARED)
+
+src/%.o: 	$(SOURCE_DIR)/src/%.c $(ALL_HEADERS) host.tag tree.tag
+		$(CC) -c -o $@ $< $(CFLAGS_STATIC)
+
+lib/%$(OS_LIB_PREFIXED_SUFFIX)$(VER_XYZ)$(OS_LIB_SUFFIXED_SUFFIX):
+		$(CC) -shared -o $@ $^ $(LDFLAGS_SHARED)
+
+lib/%$(OS_ARCHIVE_EXT):
+		mkdir -p lib
+		rm -f $@
+		$(AR) rcs $@ $^
+
+
+
+all:		package-shared package-static app
+
+install:	package-install-app
+install:	package-install-extras
+install:	install-libs
+
+app:		app-tag
+
+app.tag:
+		cp $(PACKAGE_APP) $(APP)
+		touch app.tag
+
+install-libs:	package-install-shared
+install-libs:	package-install-static
+
+install-headers-default:
+		mkdir -p $(DESTDIR)$(INCLUDEDIR)/$(PACKAGE)
+		cp $(API_HEADERS) $(DESTDIR)$(INCLUDEDIR)/$(PACKAGE)
+
+install-shared:	shared install-lib install-implib
+install-shared: package-install-soname package-install-solink
+install-shared: install-headers
+
+install-lib:	shared
+		mkdir -p $(DESTDIR)$(LIBDIR)
+		cp $(SHARED_LIB) $(DESTDIR)$(LIBDIR)
+
+install-static:	static install-headers
+		mkdir -p $(DESTDIR)$(LIBDIR)
+		cp $(STATIC_LIB) $(DESTDIR)$(LIBDIR)
+
+install-app:	app install-app-extras
+		mkdir -p $(DESTDIR)$(BINDIR)
+		cp $(APP) $(DESTDIR)$(BINDIR)
+
+install-static-app:	static-app install-app-extras
+			mkdir -p $(DESTDIR)$(BINDIR)
+			cp $(STATIC_APP) $(DESTDIR)$(BINDIR)/$(NICKNAME)$(OS_APP_SUFFIX)
+
+
+
+shared:		shared-lib implib
+shared:		package-shared-soname package-shared-solink
+
+static:		static-lib
+
+shared-lib:	shared-objs $(SHARED_LIB)
+
+shared-soname:	shared-lib $(SHARED_SONAME)
+
+shared-solink:	shared-lib $(SHARED_SOLINK)
+
+static-lib:	static-objs $(STATIC_LIB)
+
+
+
+default-app:	version.tag static-objs $(DEFAULT_APP)
+
+shared-app:	version.tag shared $(SHARED_APP)
+
+static-app:	version.tag static-objs $(STATIC_APP)
+
+
+
+shared-objs:	dirs $(SHARED_OBJS)
+
+static-objs:	dirs $(STATIC_OBJS)
+
+app-objs:	dirs $(APP_OBJS)
+
+
+
+$(SHARED_LIB):	$(SHARED_OBJS)
+$(SHARED_LIB):	LDFLAGS_SHARED += $(LDFLAGS_IMPLIB)
+
+$(STATIC_LIB):	$(STATIC_OBJS)
+
+$(APP):		$(PACKAGE_APP)
+
+$(DEFAULT_APP):	$(STATIC_OBJS) $(APP_OBJS)
+		rm -f app.tag
+		$(CC) -o $@ $^ $(LDFLAGS_APP)
+
+$(SHARED_APP):	$(DSO_REF_SOLINK) $(APP_OBJS) $(SHARED_SOLINK)
+		rm -f app.tag
+		$(CC) -o $@ $(APP_OBJS) $(LDFLAGS_APP) -l$(PACKAGE)
+
+$(STATIC_APP):	$(STATIC_OBJS) $(APP_OBJS)
+		rm -f app.tag
+		$(CC) -static -o $@ $^ $(LDFLAGS_STATIC)
+
+
+dirs: 		dirs.tag
+
+dirs.tag:
+		mkdir -p build
+		mkdir -p bin
+		mkdir -p lib
+		touch dirs.tag
+
+host.tag:	Makefile
+		$(CC) $(CFLAGS) -dumpmachine > host.tmp
+		mv host.tmp host.tag
+
+version.tag:	$(GIT_REFERENCE_INDEX) dirs.tag
+		$(PROJECT_DIR)/sofort/tools/version.sh	\
+			-s $(SOURCE_DIR)		\
+			-o build/$(PACKAGE)_version.h	\
+			-p $(PACKAGE)
+		touch version.tag
+
+distclean:	clean
+		rm -f ccenv/host.mk
+		rm -f ccenv/native.mk
+		rm -f cfgdefs.mk
+		rm -f usrdefs.mk
+		rm -f config.log
+		rm -f Makefile
+		rmdir build ccenv bin lib 2>&1 || true
+
+clean:		clean-implib
+		rm -f tree.tag
+		rm -f dirs.tag
+		rm -f host.tag
+		rm -f host.tmp
+		rm -f version.tag
+		rm -f app.tag
+		rm -f $(SHARED_OBJS)
+		rm -f $(STATIC_OBJS)
+		rm -f $(APP_OBJS)
+		rm -f $(SHARED_LIB)
+		rm -f $(SHARED_SONAME)
+		rm -f $(SHARED_SOLINK)
+		rm -f $(STATIC_LIB)
+		rm -f $(APP)
+		rm -f $(DEFAULT_APP)
+		rm -f $(SHARED_APP)
+		rm -f $(STATIC_APP)
+		rm -f build/$(PACKAGE)_version.h
+		rm -f build/$(PACKAGE).pc
+
+
+.PHONY:		package-app \
+		all install shared static app \
+		shared-objs shared-lib \
+		shared-soname shared-solink \
+		package-shared-soname package-shared-solink \
+		static-objs static-lib \
+		default-app shared-app static-app \
+		install-shared install-static \
+		install-soname install-solink \
+		package-install-soname package-install-solink \
+		install-headers install-app \
+		install-headers-default install-headers-custom \
+		clean distclean clean-implib version \
+		.display .conf \
+		.display-project .display-env .display-tools .display-flags \
+		.display-pe .display-dirs .display-build \
+		implib implib-ver implib-soname implib-solink \
+		install-implib install-implib-ver \
+		install-implib-soname install-implib-solink
diff --git a/config.project b/config.project
new file mode 100644
index 0000000..c921c48
--- /dev/null
+++ b/config.project
@@ -0,0 +1,61 @@
+# project
+mb_package=tpax
+mb_require_out_of_tree=no
+mb_custom_install_headers=no
+mb_avoid_version=no
+
+# config
+mb_all_static=
+mb_all_shared=
+mb_disable_frontend=yes
+mb_disable_static=yes
+mb_disable_shared=yes
+
+# custom config step
+mb_use_custom_cfgdefs=no
+mb_use_custom_cfgtest=no
+
+# pkgconfig
+mb_pkgname='tpax'
+mb_pkgdesc='tpax'
+mb_pkgusrc=
+mb_pkgrepo='https://git.foss21.org/tpax'
+mb_pkgpsrc=
+mb_pkgdurl=
+mb_pkgdefs=
+mb_pkglibs=
+
+# ccenv
+mb_ccenv_create_log=
+mb_ccenv_skip_native=
+
+# switches
+mb_default_cflags_common="-std=c99 -D_XOPEN_SOURCE=700"
+mb_default_cflags_common="$mb_default_cflags_common -I\$(SOURCE_DIR)/src/internal"
+mb_default_cflags_common="$mb_default_cflags_common -I\$(SOURCE_DIR)/include"
+mb_default_cflags_common="$mb_default_cflags_common -Ibuild"
+
+mb_default_cflags_debug=
+mb_default_cflags_cmdline=
+mb_default_cflags_config=
+mb_default_cflags_sysroot=
+mb_default_cflags_path=
+mb_default_cflags_strict=
+mb_default_cflags_util=
+mb_default_cflags_last=
+mb_default_cflags_once=
+
+mb_default_ldflags_common="-Llib"
+mb_default_ldflags_debug=
+mb_default_ldflags_cmdline=
+mb_default_ldflags_config=
+mb_default_ldflags_sysroot=
+mb_default_ldflags_path=
+mb_default_ldflags_strict=
+mb_default_ldflags_util=
+mb_default_ldflags_last=
+mb_default_ldflags_once=
+
+# native
+mb_default_native_cflags="-std=c99 -D_XOPEN_SOURCE=700"
+mb_default_native_ldflags=
diff --git a/config.usage b/config.usage
new file mode 100644
index 0000000..5074221
--- /dev/null
+++ b/config.usage
@@ -0,0 +1,179 @@
+configure: common usage
+
+supported switches:
+-------------------
+	--help
+
+	--nickname
+	--program-prefix
+	--avoid-version
+	--source-dir
+	--srcdir
+
+	--pkgname
+	--pkgdesc
+	--pkgusrc
+	--pkgrepo
+	--pkgpsrc
+	--pkgdurl
+	--pkgdefs
+	--pkglibs
+
+	--srcinfo
+	--srcsite
+
+	--pgprkey
+	--pgpskey
+
+	--rawball
+	--rawball-url
+	--rawball-sha256
+	--modball
+	--modball-url
+	--modball-sha256
+	--srcball
+	--srcball-url
+	--srcball-sha256
+
+	--prefix
+	--exec-prefix
+	--bindir
+	--sbindir
+	--libdir
+	--includedir
+	--oldincludedir
+	--mandir
+	--docdir
+	--libexecdir
+
+	--sysconfdir
+	--sharedstatedir
+	--localstatedir
+	--runstatedir
+	--datarootdir
+	--datadir
+	--infodir
+	--localedir
+	--htmldir
+	--dvidir
+	--pdfdir
+	--psdir
+
+	--build
+	--host
+	--cchost
+	--cfghost
+	--target
+	--arch
+	--compiler
+	--toolchain
+	--sysroot
+	--cross-compile
+	--shell
+	--debug
+
+	--strict
+	--ccstrict
+	--ldstrict
+
+	--all-static
+	--all-shared
+	--enable-static
+	--enable-shared
+	--disable-static
+	--disable-shared
+
+	--enable-app
+	--enable-frontend
+	--disable-app
+	--disable-frontend
+
+	--enable-dependency-tracking
+	--disable-dependency-tracking
+
+
+supported variables:
+--------------------
+	NICKNAME
+	SOURCE_DIR
+
+	PREFIX
+	EXEC_PREFIX
+	BINDIR
+	SBINDIR
+	LIBDIR
+	INCLUDEDIR
+	MANDIR
+	DOCDIR
+	LIBEXECDIR
+
+	SYSCONFDIR
+	SHAREDSTATEDIR
+	LOCALSTATEDIR
+	RUNSTATEDIR
+	DATAROOTDIR
+	DATADIR
+	INFODIR
+	LOCALEDIR
+	HTMLDIR
+	DVIDIR
+	PDFDIR
+	PSDIR
+
+	CC
+	CPP
+	CXX
+
+	BUILD
+	HOST
+	CCHOST
+	CFGHOST
+	TARGET
+	ARCH
+	COMPILER
+	TOOLCHAIN
+	SYSROOT
+	CROSS_COMPILE
+	SHELL
+
+	CFLAGS
+	CFLAGS_DEBUG
+	CFLAGS_COMMON
+	CFLAGS_CMDLINE
+	CFLAGS_CONFIG
+	CFLAGS_SYSROOT
+	CFLAGS_OS
+	CFLAGS_SITE
+	CFLAGS_PATH
+	CFLAGS_STRICT
+	CFLAGS_UTIL
+	CFLAGS_LAST
+	CFLAGS_ONCE
+
+	LDFLAGS
+	LDFLAGS_DEBUG
+	LDFLAGS_COMMON
+	LDFLAGS_CMDLINE
+	LDFLAGS_CONFIG
+	LDFLAGS_SYSROOT
+	LDFLAGS_PATH
+	LDFLAGS_STRICT
+	LDFLAGS_UTIL
+	LDFLAGS_LAST
+	LDFLAGS_ONCE
+
+	PE_SUBSYSTEM
+	PE_IMAGE_BASE
+
+	NATIVE_CC
+	NATIVE_CPP
+	NATIVE_CXX
+
+	NATIVE_HOST
+	NATIVE_CFGHOST
+	NATIVE_CFLAGS
+	NATIVE_LDFLAGS
+
+	NATIVE_OS
+	NATIVE_OS_BITS
+	NATIVE_OS_UNDERSCORE
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
diff --git a/include/empty.dir b/include/empty.dir
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/include/empty.dir
diff --git a/project/arch.mk b/project/arch.mk
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/project/arch.mk
diff --git a/project/common.mk b/project/common.mk
new file mode 100644
index 0000000..4b72987
--- /dev/null
+++ b/project/common.mk
@@ -0,0 +1,7 @@
+API_SRCS = \
+
+INTERNAL_SRCS = \
+
+APP_SRCS = \
+
+COMMON_SRCS = $(API_SRCS) $(INTERNAL_SRCS)
diff --git a/project/depends.mk b/project/depends.mk
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/project/depends.mk
diff --git a/project/extras.mk b/project/extras.mk
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/project/extras.mk
diff --git a/project/headers.mk b/project/headers.mk
new file mode 100644
index 0000000..9d50ee3
--- /dev/null
+++ b/project/headers.mk
@@ -0,0 +1,5 @@
+API_HEADERS = \
+
+INTERNAL_HEADERS = \
+
+ALL_HEADERS = $(API_HEADERS) $(INTERNAL_HEADERS)
diff --git a/project/osforce.mk b/project/osforce.mk
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/project/osforce.mk
diff --git a/project/overrides.mk b/project/overrides.mk
new file mode 100644
index 0000000..4ac3b36
--- /dev/null
+++ b/project/overrides.mk
@@ -0,0 +1 @@
+src/$(PACKAGE).o: CFLAGS_CONFIG += -Wno-unused-parameter
diff --git a/project/tagver.mk b/project/tagver.mk
new file mode 100644
index 0000000..6a5d8d6
--- /dev/null
+++ b/project/tagver.mk
@@ -0,0 +1,5 @@
+VER_NAMESPACE	=
+
+VER_MAJOR	= 0
+VER_MINOR	= 0
+VER_PATCH	= 0
diff --git a/project/tree.mk b/project/tree.mk
new file mode 100644
index 0000000..ed9e1f8
--- /dev/null
+++ b/project/tree.mk
@@ -0,0 +1,10 @@
+TREE_DIRS     = bin src lib
+
+tree.tag:
+		mkdir -p $(TREE_DIRS)
+		touch tree.tag
+
+tree-distclean:
+		rmdir $(TREE_DIRS) 2> /dev/null || true
+
+distclean:	tree-distclean
diff --git a/sofort/ccenv/ccenv.in b/sofort/ccenv/ccenv.in
new file mode 100644
index 0000000..f12c78e
--- /dev/null
+++ b/sofort/ccenv/ccenv.in
@@ -0,0 +1,86 @@
+# @ccenv_cfgtype@ system flavor
+OS                              = @ccenv_os@
+OS_SEMANTICS                    = @ccenv_os_semantics@
+
+OS_DSO_EXRULES                  = @ccenv_os_dso_exrules@
+OS_DSO_LINKAGE                  = @ccenv_os_dso_linkage@
+
+OS_APP_PREFIX                   = @ccenv_os_app_prefix@
+OS_APP_SUFFIX                   = @ccenv_os_app_suffix@
+
+OS_LIB_PREFIX                   = @ccenv_os_lib_prefix@
+OS_LIB_SUFFIX                   = @ccenv_os_lib_suffix@
+
+OS_IMPLIB_EXT                   = @ccenv_os_implib_ext@
+OS_LIBDEF_EXT                   = @ccenv_os_libdef_ext@
+
+OS_ARCHIVE_EXT                  = @ccenv_os_archive_ext@
+OS_SONAME                       = @ccenv_os_soname@
+
+OS_LIB_PREFIXED_SUFFIX          = @ccenv_os_lib_prefixed_suffix@
+OS_LIB_SUFFIXED_SUFFIX          = @ccenv_os_lib_suffixed_suffix@
+
+# @ccenv_cfgtype@ characteristics
+CC_HOST                         = @ccenv_cc_host@
+CC_BITS                         = @ccenv_cc_bits@
+
+CC_BINFMT                       = @ccenv_cc_binfmt@
+CC_UNDERSCORE                   = @ccenv_cc_underscore@
+
+CC_ARCH_BFD                     = @ccenv_cc_arch_bfd@
+CC_ARCH_LLVM                    = @ccenv_cc_arch_llvm@
+
+# incompatible tool variants
+AS_ASM                          = @ccenv_as_asm@
+AS_LL                           = @ccenv_as_ll@
+AS_MC                           = @ccenv_as_mc@
+
+LD_BFD                          = @ccenv_ld_bfd@
+LD_GOLD                         = @ccenv_ld_gold@
+LD_LLD                          = @ccenv_ld_lld@
+
+OBJDUMP_BFD                     = @ccenv_objdump_bfd@
+OBJDUMP_LLVM                    = @ccenv_objdump_llvm@
+
+READELF_BFD                     = @ccenv_readelf_bfd@
+READELF_LLVM                    = @ccenv_readelf_llvm@
+
+# @ccenv_cfgtype@ primary tools
+CC                              = @ccenv_cc@
+CPP                             = @ccenv_cpp@
+CXX                             = @ccenv_cxx@
+
+AR                              = @ccenv_ar@
+NM                              = @ccenv_nm@
+OBJDUMP                         = @ccenv_objdump@
+RANLIB                          = @ccenv_ranlib@
+SIZE                            = @ccenv_size@
+STRIP                           = @ccenv_strip@
+STRINGS                         = @ccenv_strings@
+
+ADDR2LINE                       = @ccenv_addr2line@
+COV                             = @ccenv_cov@
+CXXFILT                         = @ccenv_cxxfilt@
+OBJCOPY                         = @ccenv_objcopy@
+
+ELFEDIT                         = @ccenv_elfedit@
+READELF                         = @ccenv_readelf@
+READOBJ                         = @ccenv_readobj@
+
+PERK                            = @ccenv_perk@
+MDSO                            = @ccenv_mdso@
+DLLTOOL                         = @ccenv_dlltool@
+
+WINDMC                          = @ccenv_windmc@
+WINDRC                          = @ccenv_windrc@
+
+# @ccenv_cfgtype@ secondary tools
+# note: the direct use of $(@ccenv_makevar_prefix@LD) is highly discouraged
+AS                              = @ccenv_as@
+LD                              = @ccenv_ld@
+
+# @ccenv_cfgtype@ cflags
+CFLAGS_OS                      += -DOS_LIB_SUFFIX=\"@ccenv_os_lib_suffix@\"
+CFLAGS_OS                      += @ccenv_cflags_os@
+CFLAGS_PIC                     += @ccenv_cflags_pic@
+
diff --git a/sofort/ccenv/ccenv.sh b/sofort/ccenv/ccenv.sh
new file mode 100644
index 0000000..a376eb7
--- /dev/null
+++ b/sofort/ccenv/ccenv.sh
@@ -0,0 +1,1321 @@
+# ccenv.sh: sofort's tool-finding bits,
+# invoked from within the project-agnostic configure script.
+
+# this file is covered by COPYING.SOFORT.
+
+# invocation and names of binary tools:
+# agnostic names (ar, nm, objdump, ...);
+# target-prefixed agnostic names (x86_64-nt64-midipix-ar, ...);
+# branded names (llvm-ar, llvm-nm, llvm-objdump, ...);
+# target-prefixed branded names (x86_64-linux-gnu-gcc-ar, ...);
+# target-specifying branded tools (llvm-ar --target=x86_64-linux, ...).
+
+# cross-compilation: default search order:
+# target-prefixed agnostic tools;
+# target-prefixed branded tools, starting with the prefix
+# most commonly associated with the selected compiler (that is,
+# ``gcc'' when using gcc, and ``llvm'' when using clang);
+# target-speficying branded tools, starting once again with the
+# prefix most commonly associated with the selected compiler.
+
+# internal variables of interest:
+# ccenv_cfgtype: the type of host being tested (host/native)
+# ccenv_cfgfile: the configuration file for the host being tested
+# ccenv_cflags:  the comprehensive cflags for the host being tested
+# ccenv_cchost:  the host being tested, as reported by -dumpmachine
+
+
+ccenv_usage()
+{
+	cat "$mb_project_dir"/sofort/ccenv/ccenv.usage
+	exit 0
+}
+
+
+ccenv_newline()
+{
+	printf '\n' >> "$ccenv_cfgfile"
+}
+
+
+ccenv_comment()
+{
+	ccenv_internal_str='#'
+
+	for ccenv_internal_arg ; do
+		ccenv_internal_str="$ccenv_internal_str $ccenv_internal_arg"
+	done
+
+	printf '%s\n' "$ccenv_internal_str" >> "$ccenv_cfgfile"
+}
+
+
+ccenv_tool_prolog()
+{
+	ccenv_line_dots='.....................................'
+	ccenv_tool_desc=" == checking for ${1}"
+	ccenv_tool_dlen="${#ccenv_line_dots}"
+
+	printf '\n%s\n' '________________________' >&3
+	printf "ccenv: checking for ${1}\n\n" >&3
+	printf "%${ccenv_tool_dlen}.${ccenv_tool_dlen}s" \
+		"${ccenv_tool_desc}  ${mb_line_dots}"
+}
+
+
+ccenv_tool_epilog()
+{
+	ccenv_line_dots='................................'
+	ccenv_tool_dlen="$((${#ccenv_line_dots} - ${#1}))"
+
+	printf "%${ccenv_tool_dlen}.${ccenv_tool_dlen}s  %s.\n" \
+		"${ccenv_line_dots}" "${1}"
+
+	if [ "${1}" = 'false' ]; then
+		printf '\n\nccenv: not (yet) found.\n' >&3
+	else
+		printf "\n\nccenv : found $(command -v ${1}).\n" >&3
+	fi
+
+	printf '%s\n' '------------------------' >&3
+}
+
+
+ccenv_tool_variant_epilog()
+{
+	ccenv_expr=${1}='${'${1}':-false}'
+	eval "$ccenv_expr"
+
+	ccenv_expr='${'${1}'}'
+	eval ccenv_tool_epilog "$ccenv_expr"
+}
+
+
+ccenv_attr_prolog()
+{
+	ccenv_line_dots=' .....................................'
+	ccenv_attr_desc=" == detect ${ccenv_cfgtype} ${1}"
+	ccenv_attr_dlen="${#ccenv_line_dots}"
+
+	printf "%${ccenv_attr_dlen}.${ccenv_attr_dlen}s" \
+		"${ccenv_attr_desc} ${ccenv_line_dots}"
+
+	printf '\n%s\n' '________________________' >&3
+	printf "ccenv: detecting ${1}\n\n" >&3
+}
+
+
+ccenv_attr_epilog()
+{
+	ccenv_line_dots='................................'
+	ccenv_tool_dlen="$((${#ccenv_line_dots} - 1 - ${#1}))"
+
+	printf "%${ccenv_tool_dlen}.${ccenv_tool_dlen}s  %s.\n" \
+		"${ccenv_line_dots}" "${1}"
+
+	printf '\n\nccenv: detected result: %s\n' "${1}" >&3
+	printf '%s\n' '------------------------' >&3
+}
+
+
+ccenv_find_tool()
+{
+	if [ -z "$ccenv_prefixes" ]; then
+		for ccenv_candidate in $(printf '%s' "$ccenv_candidates"); do
+			if [ -z ${@:-} ]; then
+				if command -v "$ccenv_candidate" > /dev/null; then
+					ccenv_tool="$ccenv_candidate"
+					return 0
+				fi
+			else
+				if command -v "$ccenv_candidate" > /dev/null; then
+					if "$ccenv_candidate" $@ > /dev/null 2>&3; then
+						ccenv_tool="$ccenv_candidate"
+						return 0
+					fi
+				fi
+			fi
+		done
+
+		ccenv_tool=false
+
+		return 0
+	fi
+
+	for ccenv_prefix in $(printf '%s' "$ccenv_prefixes"); do
+		for ccenv_candidate in $(printf '%s' "$ccenv_candidates"); do
+			ccenv_tool="$ccenv_prefix$ccenv_candidate"
+
+			if command -v "$ccenv_tool" > /dev/null; then
+				return 0
+			fi
+		done
+	done
+
+	for ccenv_candidate in $(printf '%s' "$ccenv_candidates"); do
+		if command -v "$ccenv_candidate" > /dev/null; then
+			ccenv_tool="$ccenv_candidate"
+			return 0
+		fi
+	done
+
+	ccenv_tool=false
+
+	return 0
+}
+
+
+ccenv_set_primary_tools()
+{
+	ccenv_core_tools="ar nm objdump ranlib size strip strings objcopy"
+	ccenv_hack_tools="addr2line cov elfedit readelf readobj otool"
+	ccenv_peep_tools="perk mdso dlltool windmc windres"
+
+	for __tool in $(printf '%s' "$ccenv_core_tools $ccenv_hack_tools $ccenv_peep_tools"); do
+		ccenv_tool_prolog "$__tool"
+
+		if [ -n "$mb_agnostic" ]; then
+			ccenv_candidates=" $__tool"
+
+		elif [ -n "$mb_zealous" ]; then
+			ccenv_candidates="$mb_zealous-$__tool"
+
+		elif [ "$mb_toolchain" = 'gcc' ]; then
+			ccenv_candidates="gcc-$__tool"
+			ccenv_candidates="$ccenv_candidates $__tool"
+			ccenv_candidates="$ccenv_candidates llvm-$__tool"
+
+		elif [ "$mb_toolchain" = 'llvm' ]; then
+			ccenv_candidates="llvm-$__tool"
+			ccenv_candidates="$ccenv_candidates $__tool"
+			ccenv_candidates="$ccenv_candidates gcc-$__tool"
+
+		elif [ -n "$mb_toolchain" ]; then
+			ccenv_candidates="$mb_toolchain-$__tool"
+			ccenv_candidates="$ccenv_candidates $__tool"
+			ccenv_candidates="$ccenv_candidates gcc-$__tool"
+			ccenv_candidates="$ccenv_candidates llvm-$__tool"
+
+		else
+			ccenv_candidates="$__tool"
+			ccenv_candidates="$ccenv_candidates gcc-$__tool"
+			ccenv_candidates="$ccenv_candidates llvm-$__tool"
+		fi
+
+		if [ "$ccenv_cfgtype" = 'host' ]; then
+			ccenv_var_prefix='mb_'
+		else
+			ccenv_var_prefix='mb_native_'
+		fi
+
+		ccenv_var_name=$ccenv_var_prefix$__tool
+		ccenv_var_expr='${'$ccenv_var_name':-}'
+		eval ccenv_var_val=$ccenv_var_expr
+
+		if [ -n "$ccenv_var_val" ]; then
+			eval ccenv_$__tool="$ccenv_var_val"
+		else
+			ccenv_find_tool
+			eval ccenv_$__tool="$ccenv_tool"
+		fi
+
+		ccenv_tool_epilog "$ccenv_tool"
+	done
+
+	# windrc
+	ccenv_windrc="$ccenv_windres"
+}
+
+ccenv_set_tool_variants()
+{
+	# as (asm)
+	ccenv_tool_prolog 'as (asm)'
+	ccenv_candidates=as
+	ccenv_find_tool
+
+	if [ "$ccenv_tool" = false ]; then
+		ccenv_as_asm=
+	else
+		$ccenv_tool --help | grep -i '.bc assembler' \
+		|| ccenv_as_asm="$ccenv_tool"
+	fi
+
+	ccenv_tool_variant_epilog 'ccenv_as_asm'
+
+	# as (ll)
+	ccenv_tool_prolog 'as (ll)'
+	ccenv_candidates=llvm-as
+	ccenv_find_tool
+
+	if [ "$ccenv_tool" != false ]; then
+		ccenv_as_ll="$ccenv_tool"
+	fi
+
+	ccenv_tool_variant_epilog 'ccenv_as_ll'
+
+	# as (mc)
+	ccenv_tool_prolog 'as (mc)'
+	ccenv_candidates=llvm-mc
+	ccenv_find_tool
+
+	if [ "$ccenv_tool" != false ]; then
+		ccenv_as_mc="$ccenv_tool"
+	fi
+
+	ccenv_tool_variant_epilog 'ccenv_as_mc'
+
+	# ld (bfd)
+	ccenv_tool_prolog 'ld (bfd)'
+	ccenv_candidates=ld.bfd
+	ccenv_find_tool
+
+	if [ "$ccenv_tool" != false ]; then
+		ccenv_ld_bfd="$ccenv_tool"
+	fi
+
+	ccenv_tool_variant_epilog 'ccenv_ld_bfd'
+
+	# ld (gold)
+	ccenv_tool_prolog 'ld (gold)'
+	ccenv_candidates=ld.gold
+	ccenv_find_tool
+
+	if [ "$ccenv_tool" != false ]; then
+		ccenv_ld_gold="$ccenv_tool"
+	fi
+
+	ccenv_tool_variant_epilog 'ccenv_ld_gold'
+
+	# ld (lld)
+	ccenv_tool_prolog 'ld (lld)'
+	ccenv_candidates=lld
+	ccenv_find_tool
+
+	if [ "$ccenv_tool" != false ]; then
+		ccenv_ld_lld="$ccenv_tool"
+	fi
+
+	ccenv_tool_variant_epilog 'ccenv_ld_lld'
+
+	# objdump (bfd)
+	ccenv_tool_prolog 'objdump (bfd)'
+	ccenv_candidates=objdump
+	ccenv_find_tool
+
+	if $ccenv_tool --version | grep -i Binutils > /dev/null; then
+		ccenv_objdump_bfd="$ccenv_tool"
+	fi
+
+	ccenv_tool_variant_epilog 'ccenv_objdump_bfd'
+
+	# objdump (llvm)
+	ccenv_tool_prolog 'objdump (llvm)'
+	ccenv_candidates=llvm-objdump
+	ccenv_find_tool
+
+	if $ccenv_tool --version | grep -i LLVM > /dev/null; then
+		ccenv_objdump_llvm="$ccenv_tool"
+	fi
+
+	ccenv_tool_variant_epilog 'ccenv_objdump_llvm'
+
+	# readelf (bfd)
+	ccenv_tool_prolog 'readelf (bfd)'
+	ccenv_candidates=readelf
+	ccenv_find_tool
+
+	if $ccenv_tool --version | grep -i Binutils > /dev/null; then
+		ccenv_readelf_bfd="$ccenv_tool"
+	fi
+
+	ccenv_tool_variant_epilog 'ccenv_readelf_bfd'
+
+	# readelf (llvm)
+	ccenv_tool_prolog 'readelf (llvm)'
+	ccenv_candidates=llvm-readelf
+	ccenv_find_tool
+
+	if $ccenv_tool --version | grep -i LLVM > /dev/null; then
+		ccenv_readelf_llvm="$ccenv_tool"
+	fi
+
+	ccenv_tool_variant_epilog 'ccenv_readelf_llvm'
+
+	# as
+	if [ -n "$ccenv_cc" ]; then
+		ccenv_as='$('"$ccenv_makevar_prefix"'CC) -c -x assembler'
+	elif [ -n "$mb_agnostic" ]; then
+		ccenv_as='$('"$ccenv_makevar_prefix"'AS_ASM)'
+	elif [ "$mb_zealous" = 'gcc' ]; then
+		ccenv_as='$('"$ccenv_makevar_prefix"'AS_ASM)'
+	elif [ -n "$mb_zealous" = 'llvm' ]; then
+		ccenv_as='$('"$ccenv_makevar_prefix"'AS_MC)'
+	elif [ "$mb_toolchain" = 'gcc' ]; then
+		ccenv_as='$('"$ccenv_makevar_prefix"'AS_ASM)'
+	elif [ "$mb_toolchain" = 'llvm' ]; then
+		ccenv_as='$('"$ccenv_makevar_prefix"'AS_MC)'
+	fi
+
+	# ld
+	if [ -n "$ccenv_cc" ]; then
+		ccenv_ld='$('"$ccenv_makevar_prefix"'CC) -nostdlib -nostartfiles'
+	fi
+}
+
+ccenv_set_c_compiler_candidates()
+{
+	if   [ -n "$mb_compiler" ]; then
+		ccenv_candidates="$mb_compiler"
+
+	elif [ -n "$mb_agnostic" ]; then
+		ccenv_candidates="c99 c11 cc"
+
+	elif [ "$mb_zealous" = 'gcc' ]; then
+		ccenv_candidates="gcc"
+
+	elif [ "$mb_zealous" = 'llvm' ]; then
+		ccenv_candidates="clang"
+
+	elif [ "$mb_toolchain" = 'gcc' ]; then
+		ccenv_candidates="gcc c99 c11 cc clang"
+
+	elif [ "$mb_toolchain" = 'llvm' ]; then
+		ccenv_candidates="clang c99 c11 cc gcc"
+
+	elif [ -n "$mb_toolchain" ]; then
+		ccenv_candidates="$mb_toolchain c99 c11 cc gcc clang"
+
+	else
+		ccenv_candidates="c99 c11 cc gcc clang"
+	fi
+}
+
+
+ccenv_set_cc()
+{
+	ccenv_tool_prolog 'C compiler'
+
+	if [ -z "$ccenv_cc" ]; then
+		ccenv_set_c_compiler_candidates
+		ccenv_find_tool -dumpmachine
+		ccenv_cc="$ccenv_tool"
+	fi
+
+	if [ "$ccenv_cc" = false ] && [ -n "$mb_compiler" ]; then
+		ccenv_cc="$mb_compiler"
+	fi
+
+	ccenv_cc_cmd="$ccenv_cc"
+	ccenv_errors=
+
+	if [ "$ccenv_cfgtype" = 'native' ]; then
+		ccenv_host=$($ccenv_cc $(printf '%s' "$ccenv_cflags") -dumpmachine 2>&3)
+		ccenv_cchost=$ccenv_host
+		ccenv_tool_epilog "$ccenv_cc"
+		return 0
+	fi
+
+	if [ -n "$mb_cchost" ]; then
+		ccenv_host="$mb_cchost"
+	elif [ -n "$mb_host" ]; then
+		ccenv_host="$mb_host"
+	else
+		ccenv_host=
+	fi
+
+	if [ -z "$ccenv_host" ]; then
+		ccenv_host=$($ccenv_cc $(printf '%s' "$ccenv_cflags") -dumpmachine 2>&3)
+		ccenv_cchost=$ccenv_host
+	else
+		ccenv_tmp=$(mktemp ./tmp_XXXXXXXXXXXXXXXX)
+		ccenv_cmd="$ccenv_cc --target=$ccenv_host -E -xc -"
+
+		if [ -z "$mb_user_cc" ]; then
+			$(printf %s "$ccenv_cmd") < /dev/null > /dev/null \
+				2>"$ccenv_tmp" || true
+
+			ccenv_errors=$(cat "$ccenv_tmp")
+
+			if [ -z "$ccenv_errors" ]; then
+				ccenv_tflags="--target=$ccenv_host"
+				ccenv_cc="$ccenv_cc $ccenv_tflags"
+			else
+				printf '%s' "$ccenv_errors" >&3
+			fi
+		fi
+
+		rm -f "$ccenv_tmp"
+		unset ccenv_tmp
+
+		ccenv_cchost=$($ccenv_cc $(printf '%s' "$ccenv_cflags") -dumpmachine 2>&3)
+	fi
+
+	if [ "$ccenv_cchost" != "$ccenv_host" ]; then
+		printf 'error!\n' >&2
+		printf 'ccenv:\n' >&2
+		printf 'ccenv: ccenv_host:   %s \n' $ccenv_host >&2
+		printf 'ccenv: ccenv_cchost: %s \n' $ccenv_cchost >&2
+
+		if [ -z "$ccenv_tflags" ]; then
+			printf 'ccenv:\n' >&2
+			printf 'ccenv: ccenv_host and ccenv_cchost do not match, most likely because:\n' >&2
+			printf 'ccenv: (1) you explicitly set CC (or passed --compiler=...)\n' >&2
+			printf 'ccenv: (2) the selected compiler does not accept --target=...\n' >&2
+			printf 'ccenv: (3) the host reported by -dumpmachine differs from the one you requested.\n' >&2
+		fi
+
+		if [ -n "$ccenv_errors" ]; then
+			printf 'ccenv:\n' >&2
+			printf 'ccenv: something went wrong, see the command and compiler message below.\n\n' >&2
+			printf 'cmd: %s < /dev/null > /dev/null\n' "$ccenv_cmd" >&2
+			printf '%s\n\n' "$ccenv_errors" >&2
+		else
+			printf 'ccenv:\n' >&2
+			printf 'ccenv: something went wrong, bailing out.\n\n' >&2
+		fi
+
+		return 2
+	fi
+
+	ccenv_tool_epilog "$ccenv_cc"
+}
+
+ccenv_set_cpp()
+{
+	ccenv_tool_prolog 'C pre-processor'
+
+	case "$ccenv_cc_cmd" in
+		cc | c99 | c11 | gcc)
+			ccenv_cpp_prefix=
+			ccenv_candidates="cpp" ;;
+
+		clang )
+			ccenv_cpp_prefix=
+			ccenv_candidates="clang-cpp" ;;
+
+		*-cc )
+			ccenv_cpp_prefix=${ccenv_cc_cmd%-cc*}-
+			ccenv_candidates="${ccenv_cpp_prefix}cpp" ;;
+
+		*-c99 )
+			ccenv_cpp_prefix=${ccenv_cc_cmd%-c99*}-
+			ccenv_candidates="${ccenv_cpp_prefix}cpp" ;;
+
+		*-c11 )
+			ccenv_cpp_prefix=${ccenv_cc_cmd%-c11*}-
+			ccenv_candidates="${ccenv_cpp_prefix}cpp" ;;
+
+		*-gcc )
+			ccenv_cpp_prefix=${ccenv_cc_cmd%-gcc*}-
+			ccenv_candidates="${ccenv_cpp_prefix}cpp" ;;
+
+		*-clang )
+			ccenv_cpp_prefix=${ccenv_cc_cmd%-clang*}-
+			ccenv_candidates="${ccenv_cpp_prefix}clang-cpp" ;;
+
+		* )
+			ccenv_cpp="$ccenv_cc -E"
+			ccenv_tool_epilog "$ccenv_cpp"
+			return 0
+	esac
+
+	ccenv_find_tool
+
+	if [ "$ccenv_tool" = false ]; then
+		ccenv_cpp="$ccenv_cc -E"
+	elif [ -n "$ccenv_tflags" ]; then
+		ccenv_cpp="$ccenv_tool $ccenv_tflags"
+	else
+		ccenv_cpp="$ccenv_tool"
+	fi
+
+	ccenv_tool_epilog "$ccenv_cpp"
+}
+
+ccenv_set_cxx()
+{
+	ccenv_tool_prolog 'C++ compiler'
+
+	case "$ccenv_cc_cmd" in
+		cc | c99 | c11 )
+			ccenv_cxx_prefix=
+			ccenv_candidates="cxx c++" ;;
+
+		gcc )
+			ccenv_cxx_prefix=
+			ccenv_candidates="g++" ;;
+
+		clang )
+			ccenv_cxx_prefix=
+			ccenv_candidates="clang++" ;;
+
+		*-gcc )
+			ccenv_cpp_prefix=${ccenv_cc_cmd%-gcc*}-
+			ccenv_candidates="${ccenv_cpp_prefix}g++" ;;
+
+		*-clang )
+			ccenv_cpp_prefix=${ccenv_cc_cmd%-clang*}-
+			ccenv_candidates="${ccenv_cpp_prefix}clang++" ;;
+
+		*cc )
+			ccenv_cxx_prefix=${ccenv_cc_cmd%cc*}
+			ccenv_candidates="${ccenv_cpp_prefix}++" ;;
+
+		* )
+			ccenv_cxx="$ccenv_cc -xc++"
+			ccenv_tool_epilog "$ccenv_cxx"
+			return 0
+	esac
+
+	ccenv_find_tool
+
+	if [ "$ccenv_tool" = false ]; then
+		ccenv_cxx="$ccenv_cc -xc++"
+	elif [ -n "$ccenv_tflags" ]; then
+		ccenv_cxx="$ccenv_tool $ccenv_tflags"
+	else
+		ccenv_cxx="$ccenv_tool"
+	fi
+
+	ccenv_tool_epilog "$ccenv_cxx"
+}
+
+ccenv_set_cc_host()
+{
+	ccenv_attr_prolog 'system'
+	ccenv_cc_host="$ccenv_cchost"
+	ccenv_attr_epilog "$ccenv_cc_host"
+}
+
+ccenv_set_cc_bits()
+{
+	ccenv_attr_prolog 'bits'
+
+	ccenv_internal_size=
+	ccenv_internal_type='void *'
+	ccenv_internal_test='char x[(sizeof(%s) == %s/8) ? 1 : -1];'
+
+	for ccenv_internal_guess in 64 32 128; do
+		if [ -z $ccenv_internal_size ]; then
+			ccenv_internal_str=$(printf "$ccenv_internal_test"  \
+				"$ccenv_internal_type"                      \
+				"$ccenv_internal_guess")
+
+			printf '%s' "$ccenv_internal_str"                   \
+					| $ccenv_cc -S -xc - -o -           \
+					  $(printf '%s' "$ccenv_cflags")    \
+				> /dev/null 2>&3                            \
+			&& ccenv_internal_size=$ccenv_internal_guess
+		fi
+	done
+
+	ccenv_cc_bits=$ccenv_internal_size
+
+	ccenv_attr_epilog "$ccenv_cc_bits"
+}
+
+ccenv_set_cc_underscore()
+{
+	ccenv_attr_prolog 'prepended underscores'
+
+	ccenv_fn_name='ZmYaXyWbVe_UuTnSdReQrPsOcNoNrLe'
+	ccenv_fn_code='int %s(void){return 0;}'
+
+	if printf "$ccenv_fn_code" $ccenv_fn_name  \
+			| $ccenv_cc -xc - -S -o -  \
+			| grep "^_$ccenv_fn_name:" \
+				> /dev/null; then
+		ccenv_cc_underscore='_'
+		ccenv_attr_epilog 'yes'
+	fi
+
+	ccenv_attr_epilog 'no'
+
+	return 0
+}
+
+ccenv_create_framework_executable()
+{
+	if [ -f $ccenv_image ]; then
+		mv $ccenv_image $ccenv_image.tmp
+		rm -f $ccenv_image.tmp
+	fi
+
+	printf 'int main(void){return 0;}'  \
+		| $ccenv_cc -xc -           \
+			-o $ccenv_image     \
+	|| return 1
+
+	return 0
+}
+
+ccenv_create_freestanding_executable()
+{
+	if [ -f $ccenv_image ]; then
+		mv $ccenv_image $ccenv_image.tmp
+		rm -f $ccenv_image.tmp
+	fi
+
+	if [ -z "ccenv_cc_underscore" ]; then
+		ccenv_start_fn='_start'
+	else
+		ccenv_start_fn='start'
+	fi
+
+	printf 'int %s(void){return 0;}' "$ccenv_start_fn"  \
+		| $ccenv_cc -xc -                           \
+			-ffreestanding                      \
+			-nostdlib -nostartfiles             \
+			-o $ccenv_image                     \
+	|| return 1
+
+	ccenv_freestd=yes
+
+	return 0
+}
+
+ccenv_set_cc_binfmt_error()
+{
+	ccenv_attr_epilog '(unable to create executable)'
+}
+
+ccenv_set_cc_binfmt()
+{
+	ccenv_use_perk=
+	ccenv_use_otool=
+	ccenv_use_readelf=
+	ccenv_use_readobj=
+	ccenv_use_bfd_objdump=
+	ccenv_use_llvm_objdump=
+
+	ccenv_attr_prolog 'binary format'
+
+	ccenv_create_framework_executable               \
+		|| ccenv_create_freestanding_executable \
+		|| ccenv_set_cc_binfmt_error            \
+		|| return 0
+
+	# PE / perk
+	if [ -n "$ccenv_perk" ]; then
+		if $ccenv_perk $ccenv_image 2>&3; then
+			ccenv_cc_binfmt='PE'
+			ccenv_use_perk=yes
+		fi
+	fi
+
+	# ELF / readelf
+	if [ -n "$ccenv_readelf" ] && [ -z "$ccenv_cc_binfmt" ]; then
+		if $ccenv_readelf -h $ccenv_image 2>&3               \
+				| grep 'Magic:' | sed -e 's/[ ]*//g' \
+				| grep 'Magic:7f454c46'              \
+					> /dev/null; then
+			ccenv_cc_binfmt='ELF'
+			ccenv_use_readelf=yes
+		fi
+	fi
+
+	# a marble of astonishing design:
+	# llvm-readelf also parses PE and Mach-O
+
+	if [ -n "$ccenv_readelf_llvm" ]; then
+		ccenv_readany="$ccenv_readelf_llvm"
+	else
+		ccenv_readany="$ccenv_readelf"
+	fi
+
+	# PE / readelf
+	if [ -n "$ccenv_readany" ] && [ -z "$ccenv_cc_binfmt" ]; then
+		if $ccenv_readany -h $ccenv_image 2>&3               \
+				| grep 'Magic:' | sed -e 's/[ ]*//g' \
+				| grep 'Magic:MZ'                    \
+					> /dev/null; then
+			ccenv_cc_binfmt='PE'
+			ccenv_use_readelf=yes
+		fi
+	fi
+
+	# MACHO-64 / otool
+	if [ -n "$ccenv_otool" ] && [ -z "$ccenv_cc_binfmt" ]; then
+		if $ccenv_otool -hv $ccenv_image 2>&3        \
+				| grep -i 'MH_MAGIC_64'      \
+					> /dev/null; then
+			ccenv_cc_binfmt='MACHO'
+			ccenv_use_otool=yes
+		fi
+	fi
+
+	# MACHO-32 / otool
+	if [ -n "$ccenv_otool" ] && [ -z "$ccenv_cc_binfmt" ]; then
+		if $ccenv_otool -hv $ccenv_image 2>&3        \
+				| grep -i 'MH_MAGIC'         \
+					> /dev/null; then
+			ccenv_cc_binfmt='MACHO'
+			ccenv_use_otool=yes
+		fi
+	fi
+
+	# MACHO-64 / readelf
+	if [ -n "$ccenv_readany" ] && [ -z "$ccenv_cc_binfmt" ]; then
+		if $ccenv_readany -h $ccenv_image 2>&3                    \
+				| grep -i 'Magic:' | sed -e 's/[ ]*//g'   \
+				| grep -i '(0xfeedfacf)'                  \
+					> /dev/null; then
+			ccenv_cc_binfmt='MACHO'
+			ccenv_use_readelf=yes
+		fi
+	fi
+
+	# MACHO-32 / readelf
+	if [ -n "$ccenv_readany" ] && [ -z "$ccenv_cc_binfmt" ]; then
+		if $ccenv_readany -h $ccenv_image 2>&3                    \
+				| grep -i 'Magic:' | sed -e 's/[ ]*//g'   \
+				| grep -i '(0xcafebabe)'                  \
+					> /dev/null; then
+			ccenv_cc_binfmt='MACHO'
+			ccenv_use_readelf=yes
+		fi
+	fi
+
+	# MACHO / readobj
+	if [ -n "$ccenv_readobj" ] && [ -z "$ccenv_cc_binfmt" ]; then
+		if $ccenv_readobj $ccenv_image 2>&3                  \
+				| grep -i 'Format:' | sed 's/ /_/g'  \
+				| grep -i '_Mach-O_'                 \
+					> /dev/null; then
+			ccenv_cc_binfmt='MACHO'
+			ccenv_use_readobj=yes
+		fi
+	fi
+
+	# MACHO / objdump (llvm)
+	if [ -n "$ccenv_objdump" ] && [ -z "$ccenv_cc_binfmt" ]; then
+		if $ccenv_objdump -section-headers $ccenv_image  \
+					2>&3                     \
+				| grep -i 'file format Mach-O'   \
+					> /dev/null; then
+			ccenv_cc_binfmt='MACHO'
+			ccenv_use_objdump=yes
+		fi
+	fi
+
+	# MACHO / objdump (bfd)
+	if [ -n "$ccenv_objdump" ] && [ -z "$ccenv_cc_binfmt" ]; then
+		$ccenv_objdump -h  $ccenv_image 2>&3              \
+			| grep -i 'file format Mach-O'            \
+				> /dev/null                       \
+		&& ccenv_cc_binfmt='MACHO'                        \
+		&& ccenv_use_objdump=yes
+	fi
+
+	# PE / objdump (bfd)
+	if [ -n "$ccenv_objdump" ] && [ -z "$ccenv_cc_binfmt" ]; then
+		if $ccenv_objdump -h  $ccenv_image 2>&3        \
+				| grep -i 'file format pei-'   \
+					> /dev/null; then
+			ccenv_cc_binfmt='PE'
+			ccenv_use_bfd_objdump=yes
+		fi
+	fi
+
+	ccenv_attr_epilog "$ccenv_cc_binfmt"
+}
+
+ccenv_set_os_pe()
+{
+	if [ -n "$ccenv_freestd" ]; then
+		case "$ccenv_cchost" in
+			*-midipix | *-midipix-* )
+				ccenv_os='midipix' ;;
+			*-mingw | *-mingw32 | *-mingw64 )
+				ccenv_os='mingw' ;;
+			*-mingw-* | *-mingw32-* | *-mingw64 )
+				ccenv_os='mingw' ;;
+			*-msys | *-msys2 | *-msys-* | *-msys2-* )
+				ccenv_os='msys' ;;
+			*-cygwin | *-cygwin-* )
+				ccenv_os='cygwin' ;;
+		esac
+	fi
+
+	if [ -n "$ccenv_os" ]; then
+		return 0
+	fi
+
+	if [ -n "$ccenv_use_perk" ]; then
+		ccenv_framework=$($ccenv_perk -y $ccenv_image)
+		ccenv_os=${ccenv_framework#*-*-*-*}
+	fi
+
+	if [ -z "$ccenv_os" ] && [ -n "$ccenv_objdump_bfd" ]; then
+		$ccenv_objdump_bfd -x $ccenv_image | grep -i 'DLL Name' \
+			| grep 'cygwin1.dll' > /dev/null                \
+		&& ccenv_os='cygwin'
+	fi
+
+	if [ -z "$ccenv_os" ] && [ -n "$ccenv_objdump_bfd" ]; then
+		$ccenv_objdump_bfd -x $ccenv_image | grep -i 'DLL Name' \
+			| grep 'msys-2.0.dll' > /dev/null               \
+		&& ccenv_os='msys'
+	fi
+
+	if [ -z "$ccenv_os" ] && [ -n "$ccenv_objdump_bfd" ]; then
+		$ccenv_objdump_bfd -x $ccenv_image          \
+			| grep -i 'DLL Name' | grep '.CRT'  \
+				> /dev/null                 \
+		&& $ccenv_objdump_bfd -x $ccenv_image       \
+			| grep -i 'DLL Name' | grep '.bss'  \
+				> /dev/null                 \
+		&& $ccenv_objdump_bfd -x $ccenv_image       \
+			| grep -i 'DLL Name' | grep '.tls'  \
+				> /dev/null                 \
+		&& ccenv_os='mingw'
+	fi
+}
+
+ccenv_set_os_macho()
+{
+	case "$ccenv_cchost" in
+		*-apple-darwin* )
+			ccenv_os='darwin' ;;
+	esac
+}
+
+ccenv_set_os()
+{
+	ccenv_attr_prolog 'os name'
+
+	case "$ccenv_cc_binfmt" in
+		PE )
+			ccenv_set_os_pe ;;
+		MACHO )
+			ccenv_set_os_macho ;;
+	esac
+
+	if [ -n "$ccenv_os" ]; then
+		ccenv_attr_epilog "$ccenv_os"
+		return 0
+	fi
+
+	case "$ccenv_cchost" in
+		*-*-*-* )
+			ccenv_tip=${ccenv_cchost%-*}
+			ccenv_os=${ccenv_tip#*-*-}
+			;;
+		*-*-musl | *-*-gnu )
+			ccenv_tip=${ccenv_cchost%-*}
+			ccenv_os=${ccenv_tip#*-}
+			;;
+		*-*-* )
+			ccenv_os=${ccenv_cchost#*-*-}
+			;;
+		*-* )
+			ccenv_os=${ccenv_cchost#*-}
+			;;
+	esac
+
+	if [ -z "$ccenv_os" ]; then
+		ccenv_os='anyos'
+	fi
+
+	ccenv_attr_epilog "$ccenv_os"
+}
+
+ccenv_set_os_flags()
+{
+	case "$ccenv_os" in
+		darwin )
+			ccenv_cflags_os='-D_DARWIN_C_SOURCE'
+			ccenv_cflags_pic='-fPIC'
+			;;
+		midipix )
+			ccenv_cflags_os=
+			ccenv_cflags_pic='-fPIC'
+			;;
+		cygwin )
+			ccenv_cflags_os=
+			ccenv_cflags_pic=
+			;;
+		msys | msys* | mingw | mingw* )
+			ccenv_cflags_os='-U__STRICT_ANSI__'
+			ccenv_cflags_pic=
+			;;
+		* )
+			ccenv_cflags_os=
+			ccenv_cflags_pic='-fPIC'
+			;;
+	esac
+}
+
+ccenv_set_os_semantics()
+{
+	# binary_format - core_api - ex_api - dependency_resolution
+
+	ccenv_attr_prolog 'os semantics'
+
+	case "$ccenv_os" in
+		linux )
+			ccenv_os_semantics='elf-posix-linux-ldso'
+			;;
+		bsd )
+			ccenv_os_semantics='elf-posix-bsd-ldso'
+			;;
+		darwin )
+			ccenv_os_semantics='macho-posix-osx-ldso'
+			;;
+		midipix )
+			ccenv_os_semantics='pe-posix-winnt-ldso'
+			;;
+		cygwin )
+			ccenv_os_semantics='pe-hybrid-winnt-unsafe'
+			;;
+		msys )
+			ccenv_os_semantics='pe-hybrid-winnt-unsafe'
+			;;
+		mingw )
+			ccenv_os_semantics='pe-win32-winnt-unsafe'
+			;;
+	esac
+
+	if [ -n "$ccenv_os_semantics" ]; then
+		ccenv_attr_epilog "$ccenv_os_semantics"
+		return 0
+	fi
+
+	if [ -n "$ccenv_cc_binfmt" ]; then
+		ccenv_os_semantics_pattern='%s-posix-anyos-unknown'
+		ccenv_os_semantics=$(printf                   \
+				"$ccenv_os_semantics_pattern"  \
+				"$ccenv_cc_binfmt"              \
+			| tr '[:upper:]' '[:lower:]')
+	else
+		ccenv_os_semantics='unknown-posix-anyos-unknown'
+	fi
+
+	ccenv_attr_epilog "$ccenv_os_semantics"
+}
+
+ccenv_set_os_dso_exrules()
+{
+	ccenv_attr_prolog 'os dso exrules'
+
+	case "$ccenv_os" in
+		midipix )
+			ccenv_os_dso_exrules='pe-mdso'
+			;;
+		* )
+			if [ "$ccenv_cc_binfmt" = 'PE' ]; then
+				ccenv_os_dso_exrules='pe-dlltool'
+			else
+				ccenv_os_dso_exrules='default'
+			fi
+	esac
+
+	ccenv_attr_epilog "$ccenv_os_dso_exrules"
+}
+
+ccenv_set_os_dso_linkage()
+{
+	# todo: PIC, PIE, and friends
+	ccenv_attr_prolog 'os linkage'
+	ccenv_os_dso_linkage='default'
+	ccenv_attr_epilog "$ccenv_os_dso_linkage"
+}
+
+ccenv_set_os_dso_patterns_darwin()
+{
+	ccenv_os_app_prefix=
+	ccenv_os_app_suffix=
+
+	ccenv_os_lib_prefix=lib
+	ccenv_os_lib_suffix=.dylib
+
+	ccenv_os_implib_ext=.invalid
+	ccenv_os_libdef_ext=.invalid
+
+	ccenv_os_archive_ext=.a
+	ccenv_os_soname=symlink
+
+	ccenv_os_lib_prefixed_suffix=
+	ccenv_os_lib_suffixed_suffix='$(OS_LIB_SUFFIX)'
+}
+
+ccenv_set_os_dso_patterns_mdso()
+{
+	ccenv_os_app_prefix=
+	ccenv_os_app_suffix=
+
+	ccenv_os_lib_prefix=lib
+	ccenv_os_lib_suffix=.so
+
+	ccenv_os_implib_ext=.lib.a
+	ccenv_os_libdef_ext=.so.def
+
+	ccenv_os_archive_ext=.a
+	ccenv_os_soname=symlink
+
+	ccenv_os_lib_prefixed_suffix='$(OS_LIB_SUFFIX)'
+	ccenv_os_lib_suffixed_suffix=
+}
+
+ccenv_set_os_dso_patterns_dlltool()
+{
+	ccenv_os_app_prefix=
+	ccenv_os_app_suffix=.exe
+
+	ccenv_os_lib_prefix=lib
+	ccenv_os_lib_suffix=.dll
+
+	ccenv_os_implib_ext=.dll.a
+	ccenv_os_libdef_ext=.def
+
+	ccenv_os_archive_ext=.a
+	ccenv_os_soname=copy
+
+	ccenv_os_lib_prefixed_suffix='$(OS_LIB_SUFFIX)'
+	ccenv_os_lib_suffixed_suffix=
+}
+
+ccenv_set_os_dso_patterns_default()
+{
+	ccenv_os_app_prefix=
+	ccenv_os_app_suffix=
+
+	ccenv_os_lib_prefix=lib
+	ccenv_os_lib_suffix=.so
+
+	ccenv_os_implib_ext=.invalid
+	ccenv_os_libdef_ext=.invalid
+
+	ccenv_os_archive_ext=.a
+	ccenv_os_soname=symlink
+
+	ccenv_os_lib_prefixed_suffix='$(OS_LIB_SUFFIX)'
+	ccenv_os_lib_suffixed_suffix=
+}
+
+ccenv_set_os_dso_patterns()
+{
+	# sover: .so.x.y.z
+	# verso: .x.y.z.so
+
+	case "$ccenv_os" in
+		darwin )
+			ccenv_set_os_dso_patterns_darwin
+			;;
+		midipix )
+			ccenv_set_os_dso_patterns_mdso
+			;;
+		cygwin | msys | mingw )
+			ccenv_set_os_dso_patterns_dlltool
+			;;
+		* )
+			ccenv_set_os_dso_patterns_default
+			;;
+	esac
+}
+
+ccenv_set_os_pe_switches()
+{
+	if [ "$ccenv_cc_binfmt" = 'PE' ] && [ -z "$ccenv_pe_subsystem" ]; then
+		case "$ccenv_os" in
+			midipix | mingw )
+				ccenv_pe_subsystem='windows'
+				;;
+			* )
+				ccenv_pe_subsystem='console'
+				;;
+		esac
+	fi
+}
+
+ccenv_output_defs()
+{
+	ccenv_in="$mb_project_dir/sofort/ccenv/ccenv.in"
+	ccenv_mk="$mb_pwd/ccenv/$ccenv_cfgtype.mk"
+	ccenv_tmp=
+
+	if [ "$ccenv_cc_binfmt" = 'PE' ]; then
+		ccenv_pe="$mb_project_dir/sofort/ccenv/pedefs.in"
+		ccenv_in="$ccenv_in $ccenv_pe"
+	fi
+
+	if [ $ccenv_cfgtype = 'native' ]; then
+
+		ccenv_tmp=$(mktemp ./tmp_XXXXXXXXXXXXXXXX)
+
+		sed                             \
+				-e 's/^\s*$/@/g' \
+				-e 's/^/NATIVE_/' \
+				-e 's/NATIVE_@//g' \
+				-e 's/NATIVE_#/#/g' \
+				-e 's/       =/=/g'  \
+				-e 's/       +=/+=/g' \
+			$ccenv_in > "$ccenv_tmp"
+
+		ccenv_in="$ccenv_tmp"
+	else
+		unset ccenv_tmp
+	fi
+
+	ccenv_vars=$(cut -d'=' -f1 "$mb_project_dir/sofort/ccenv/ccenv.vars" \
+			| grep -v '^#')
+
+	ccenv_exvars="ccenv_cfgtype ccenv_makevar_prefix"
+
+	ccenv_sed_substs=" \
+		$(for __var in $(printf '%s' "$ccenv_vars $ccenv_exvars"); do \
+			printf '%s"$%s"%s' "-e 's/@$__var@/'" \
+				"$__var" "'/g' ";              \
+		done)"
+
+	eval sed $ccenv_sed_substs $ccenv_in   \
+			| sed -e 's/[[:blank:]]*$//g' \
+		> "$ccenv_mk"
+
+	if [ "$ccenv_cfgtype" = 'host' ]; then
+		for __var in $(printf '%s' "$ccenv_vars"); do
+			ccenv_src_var=$__var
+			ccenv_dst_var=mb_${__var#*ccenv_}
+			ccenv_var_expr='${'$ccenv_src_var':-}'
+			eval $ccenv_dst_var=$ccenv_var_expr
+
+		done
+
+		mb_host=$ccenv_host
+		mb_cchost=$ccenv_cchost
+	else
+		for __var in $(printf '%s' "$ccenv_vars"); do
+			ccenv_src_var=$__var
+			ccenv_dst_var=mb_native_${__var#*ccenv_}
+			ccenv_var_expr='${'$ccenv_src_var':-}'
+			eval "$ccenv_dst_var=$ccenv_var_expr"
+		done
+
+		mb_native_host=$ccenv_host
+		mb_native_cchost=$ccenv_cchost
+	fi
+
+	if [ -n "${ccenv_tmp:-}" ]; then
+		rm -f "$ccenv_tmp"
+		unset ccenv_tmp
+	fi
+}
+
+ccenv_dso_verify()
+{
+	ccenv_str='int foo(int x){return ++x;}'
+	ccenv_cmd="$ccenv_cc -xc - -shared -o a.out"
+
+	rm -f a.out
+
+	printf '%s' "$ccenv_str" | $(printf %s "$ccenv_cmd") \
+		> /dev/null 2>&3              \
+	|| mb_disable_shared=yes
+
+	rm -f a.out
+}
+
+ccenv_clean_up()
+{
+	rm -f $ccenv_image
+}
+
+ccenv_common_init()
+{
+	. "$mb_project_dir/sofort/ccenv/ccenv.vars"
+
+	ccenv_cfgtype=$1
+	ccenv_cfgfile="$mb_pwd/ccenv/$ccenv_cfgtype.mk"
+	ccenv_freestd=
+	ccenv_cchost=
+
+	if [ $ccenv_cfgtype = 'native' ]; then
+		ccenv_makevar_prefix='NATIVE_'
+		ccenv_image='./ccenv/native.a.out'
+	else
+		ccenv_makevar_prefix=
+		ccenv_image='./ccenv/host.a.out'
+	fi
+
+	if [ $ccenv_cfgtype = 'native' ]; then
+		ccenv_prefixes=
+	elif [ -n "$mb_cross_compile" ]; then
+		ccenv_prefixes="$mb_cross_compile"
+	elif [ -n "$mb_host" ]; then
+		ccenv_prefixes="$mb_host-"
+	else
+		ccenv_prefixes=
+	fi
+
+	if [ $ccenv_cfgtype = 'host' ]; then
+		ccenv_tflags=
+		ccenv_cflags=$(make -s -f "$mb_pwd/Makefile.tmp" .cflags-host)
+
+		ccenv_cc="$mb_user_cc"
+		ccenv_cpp="$mb_user_cpp"
+		ccenv_cxx="$mb_user_cxx"
+
+		ccenv_pe_subsystem="$mb_pe_subsystem"
+		ccenv_pe_image_base="$mb_pe_image_base"
+	else
+		ccenv_tflags=
+		ccenv_cflags=$(make -s -f "$mb_pwd/Makefile.tmp" .cflags-native)
+		ccenv_cc="$mb_native_cc"
+		ccenv_cpp="$mb_native_cpp"
+		ccenv_cxx="$mb_native_cxx"
+
+		ccenv_pe_subsystem="$mb_native_pe_subsystem"
+		ccenv_pe_image_base="$mb_native_pe_image_base"
+	fi
+}
+
+ccenv_set_characteristics()
+{
+	ccenv_set_cc_host
+	ccenv_set_cc_bits
+	ccenv_set_cc_binfmt
+	ccenv_set_cc_underscore
+}
+
+ccenv_set_toolchain_variables()
+{
+	ccenv_common_init $1
+	ccenv_set_cc
+	ccenv_set_cpp
+	ccenv_set_cxx
+	ccenv_set_primary_tools
+	ccenv_set_tool_variants
+	ccenv_set_characteristics
+
+	ccenv_set_os
+	ccenv_set_os_flags
+	ccenv_set_os_semantics
+	ccenv_set_os_dso_exrules
+	ccenv_set_os_dso_linkage
+	ccenv_set_os_dso_patterns
+	ccenv_set_os_pe_switches
+
+	ccenv_output_defs
+	ccenv_clean_up
+
+	eval 'ccenv_'${ccenv_cfgtype}'_cc'=\'$ccenv_cc\'
+}
+
+ccenv_set_host_variables()
+{
+	output_script_status ${mb_script} \
+		'detect and query host (targeted) system'
+
+	ccenv_set_toolchain_variables 'host'
+	ccenv_dso_verify
+}
+
+ccenv_set_native_variables()
+{
+	output_script_status ${mb_script} \
+		'detect and query native (local build) system'
+
+	if [ _$mb_ccenv_skip_native != _yes ]; then
+		ccenv_set_toolchain_variables 'native'
+	fi
+}
diff --git a/sofort/ccenv/ccenv.usage b/sofort/ccenv/ccenv.usage
new file mode 100644
index 0000000..8eab780
--- /dev/null
+++ b/sofort/ccenv/ccenv.usage
@@ -0,0 +1,78 @@
+A few words on sofort's tool-finding logic
+==========================================
+
+# the goals of sofort's tool-finding logic are:
+- follow a clear, transparent, and consistent logic
+- allow users to easily specify per-build preferences
+- allow distros to easily and cleanly use site-wide settings
+
+
+# three-way terminology:
+- native machine: where make(1) will be running.
+- host machine:   where the package's program or libraries will execute.
+- target machine: where code generated by the host package will execute.
+
+! NOTE, however, that the host/target distinction is only relevant
+  when building a code-generating utility (e.g. a compiler), and that
+  the two are otherwise rather synonymous. Moreover, in practice it
+  is much more common to see configure scripts being invoked with a
+  --target=<machine> argument specifying the host, than with a
+  --host=<machine> argument.
+
+
+# invocation and names of binary tools:
+- agnostic names (ar, nm, objdump, ...)
+- branded names (llvm-ar, llvm-nm, llvm-objdump, ...)
+- machine-prefixed agnostic names (x86_64-nt64-midipix-ar, ...)
+- machine-prefixed branded names (x86_64-linux-gnu-gcc-ar, ...)
+- machine-specifying branded tools, as in
+  llvm-ar --target=x86_64-linux.
+
+
+# cross-compilation: default search order:
+- machine-prefixed agnostic tools
+- machine-prefixed branded tools, starting with the prefix
+  most commonly associated with the selected compiler (that is,
+  ``gcc'' when using gcc, and ``llvm'' when using clang)
+- (machine-specifying) agnostic tools
+- (machine-speficying) branded tools, starting once again with the
+  prefix most commonly associated with the selected compiler
+
+
+# native builds: default search order:
+- agnostic tools
+- machine-prefixed agnostic tools
+- machine-prefixed branded tools
+- branded tools
+
+
+# using an alternate search order:
+- --toolchain=<prefix> (e.g. --toolchain=llvm) --> search for tools
+  that begin with <prefix> before searching for agnostic tools
+
+
+# restricting which tools may be searched:
+- --zealous          --> only search for agnostic tools
+- --zealous=<prefix> --> only search for <prefix>-branded tools
+
+
+# per-tool overrides, by example of the ``ar'' tool:
+- AR=ar          --> set AR to $(command -v ar)
+- AR=/path/to/ar --> set AR to the specified absolute path
+
+
+# host generated config file and variable names:
+- ccenv/host.mk
+- AR, NM, OBJDUMP, ...
+
+
+# native generated config file and variable names:
+- ccenv/native.mk
+- NATIVE_AR, NATIVE_NM, NATIVE_OBJDUMP, ...
+
+
+# distro: site-wide preferences
+- --ccenv=/path/to/site-specific/ccenv
+- use the above to create ccenv as a symlink to
+  /path/to/site-specific/ccenv, and to accordingly
+  skip configure's tool-finding step.
diff --git a/sofort/ccenv/ccenv.vars b/sofort/ccenv/ccenv.vars
new file mode 100644
index 0000000..4775b37
--- /dev/null
+++ b/sofort/ccenv/ccenv.vars
@@ -0,0 +1,86 @@
+# system flavor
+ccenv_os=
+ccenv_os_semantics=
+
+ccenv_os_dso_exrules=
+ccenv_os_dso_linkage=
+
+ccenv_os_app_prefix=
+ccenv_os_app_suffix=
+
+ccenv_os_lib_prefix=
+ccenv_os_lib_suffix=
+
+ccenv_os_implib_ext=
+ccenv_os_libdef_ext=
+
+ccenv_os_archive_ext=
+ccenv_os_soname=
+
+ccenv_os_lib_prefixed_suffix=
+ccenv_os_lib_suffixed_suffix=
+
+# characteristics
+ccenv_cc_host=
+ccenv_cc_bits=
+
+ccenv_cc_binfmt=
+ccenv_cc_underscore=
+
+ccenv_cc_arch_bfd=
+ccenv_cc_arch_llvm=
+
+# incompatible tool variants
+ccenv_as_asm=
+ccenv_as_ll=
+ccenv_as_mc=
+
+ccenv_ld_bfd=
+ccenv_ld_gold=
+ccenv_ld_lld=
+
+ccenv_objdump_bfd=
+ccenv_objdump_llvm=
+
+ccenv_readelf_bfd=
+ccenv_readelf_llvm=
+
+# tool variables
+ccenv_cc=
+ccenv_cpp=
+ccenv_cxx=
+
+ccenv_as=
+ccenv_ld=
+
+ccenv_ar=
+ccenv_nm=
+ccenv_objdump=
+ccenv_ranlib=
+ccenv_size=
+ccenv_strip=
+ccenv_strings=
+
+ccenv_addr2line=
+ccenv_cov=
+ccenv_cxxfilt=
+ccenv_objcopy=
+
+ccenv_elfedit=
+ccenv_readelf=
+ccenv_readobj=
+
+ccenv_perk=
+ccenv_mdso=
+ccenv_dlltool=
+
+ccenv_windmc=
+ccenv_windrc=
+
+# cflags
+ccenv_cflags_os=
+ccenv_cflags_pic=
+
+# pe
+ccenv_pe_subsystem=
+ccenv_pe_image_base=
diff --git a/sofort/ccenv/pedefs.in b/sofort/ccenv/pedefs.in
new file mode 100644
index 0000000..300d990
--- /dev/null
+++ b/sofort/ccenv/pedefs.in
@@ -0,0 +1,4 @@
+# @ccenv_cfgtype@ pe switches
+PE_SUBSYSTEM                    = @ccenv_pe_subsystem@
+PE_IMAGE_BASE                   = @ccenv_pe_image_base@
+
diff --git a/sofort/config/cfgdefs.in b/sofort/config/cfgdefs.in
new file mode 100644
index 0000000..fd4b947
--- /dev/null
+++ b/sofort/config/cfgdefs.in
@@ -0,0 +1,6 @@
+# changes made to this file will be gone the next time
+#   you run ./configure.
+
+# for persistent post-configure, ad-hoc changes to the
+#   build project, use usrdefs.mk instead.
+
diff --git a/sofort/config/config.vars b/sofort/config/config.vars
new file mode 100644
index 0000000..524b746
--- /dev/null
+++ b/sofort/config/config.vars
@@ -0,0 +1,133 @@
+package
+nickname
+project_dir
+source_dir
+git_reference_index
+custom_install_headers
+avoid_version
+
+ccenv
+ccenv_create_log
+ccenv_skip_native
+
+pkgname
+pkgdesc
+pkgusrc
+pkgrepo
+pkgpsrc
+pkgdurl
+pkgbugs
+pkghome
+pkgdefs
+pkglibs
+
+srcinfo
+srcsite
+
+pgprkey
+pgpskey
+
+rawball
+rawball_url
+rawball_sha256
+modball
+modball_url
+modball_sha256
+srcball
+srcball_url
+srcball_sha256
+
+build
+host
+cchost
+cfghost
+target
+arch
+compiler
+toolchain
+zealous
+sysroot
+cross_compile
+shell
+
+prefix
+exec_prefix
+bindir
+sbindir
+libdir
+includedir
+oldincludedir
+mandir
+docdir
+libexecdir
+
+sysconfdir
+sharedstatedir
+localstatedir
+runstatedir
+datarootdir
+datadir
+infodir
+localedir
+htmldir
+dvidir
+pdfdir
+psdir
+
+cflags
+cflags_common
+cflags_debug
+cflags_cmdline
+cflags_config
+cflags_sysroot
+cflags_os
+cflags_site
+cflags_path
+cflags_strict
+cflags_util
+cflags_last
+cflags_once
+
+ldflags
+ldflags_common
+ldflags_debug
+ldflags_cmdline
+ldflags_config
+ldflags_sysroot
+ldflags_path
+ldflags_strict
+ldflags_util
+ldflags_last
+ldflags_once
+
+cc
+cpp
+cxx
+
+user_cc
+user_cpp
+user_cxx
+
+pe_subsystem
+pe_image_base
+
+native_cc
+native_cpp
+native_cxx
+
+native_host
+native_cfghost
+native_cflags
+native_ldflags
+
+native_pe_subsystem
+native_pe_image_base
+
+all_shared
+all_static
+disable_frontend
+disable_shared
+disable_static
+
+use_custom_cfgdefs
+use_custom_usrdefs
diff --git a/sofort/config/flag.vars b/sofort/config/flag.vars
new file mode 100644
index 0000000..4229e3e
--- /dev/null
+++ b/sofort/config/flag.vars
@@ -0,0 +1,25 @@
+# configure
+mb_config
+mb_debug
+
+mb_ccstrict
+mb_ldstrict
+
+mb_program_prefix
+mb_require_source_dir
+
+mb_prefix_set
+mb_bindir_set
+mb_exec_prefix_set
+
+mb_bindir_basename
+
+# ccenv
+mb_agnostic
+
+# cfgtest
+mb_cfgtest_cc
+mb_cfgtest_cflags
+mb_cfgtest_cfgtype
+mb_cfgtest_makevar
+mb_cfgtest_headers
diff --git a/sofort/core/defs.mk b/sofort/core/defs.mk
new file mode 100644
index 0000000..7e120bc
--- /dev/null
+++ b/sofort/core/defs.mk
@@ -0,0 +1,66 @@
+SHARED_LIB_DEPS    +=
+SHARED_APP_DEPS    +=
+STATIC_APP_DEPS    +=
+
+COMMON_LOBJS	   += $(COMMON_SRCS:.c=.lo)
+COMMON_OBJS	   += $(COMMON_SRCS:.c=.o)
+
+ARCH_LOBJS	   += $(ARCH_SRCS:.c=.lo)
+ARCH_OBJS	   += $(ARCH_SRCS:.c=.o)
+
+APP_LOBJS	   += $(APP_SRCS:.c=.lo)
+APP_OBJS	   += $(APP_SRCS:.c=.o)
+
+SHARED_OBJS	   += $(COMMON_LOBJS) $(ARCH_LOBJS)
+STATIC_OBJS	   += $(COMMON_OBJS)  $(ARCH_OBJS)
+
+STATIC_LIB_NAME     = $(OS_LIB_PREFIX)$(PACKAGE)$(OS_ARCHIVE_EXT)
+STATIC_LIB          = lib/$(STATIC_LIB_NAME)
+
+DSO_VER             = $(OS_LIB_PREFIX)$(PACKAGE)$(OS_LIB_PREFIXED_SUFFIX)$(VER_XYZ)$(OS_LIB_SUFFIXED_SUFFIX)
+DSO_SONAME          = $(OS_LIB_PREFIX)$(PACKAGE)$(OS_LIB_PREFIXED_SUFFIX)$(VER_SONAME)$(OS_LIB_SUFFIXED_SUFFIX)
+DSO_SOLINK          = $(OS_LIB_PREFIX)$(PACKAGE)$(OS_LIB_SUFFIX)
+
+SHARED_LIB          = lib/$(DSO_VER)
+SHARED_SONAME       = lib/$(DSO_SONAME)
+SHARED_SOLINK       = lib/$(DSO_SOLINK)
+
+IMP_DEF             = $(OS_LIB_PREFIX)$(PACKAGE)$(VER_XYZ)$(OS_LIBDEF_EXT)
+IMP_VER             = $(OS_LIB_PREFIX)$(PACKAGE)$(VER_XYZ)$(OS_IMPLIB_EXT)
+IMP_SONAME          = $(OS_LIB_PREFIX)$(PACKAGE)$(VER_SONAME)$(OS_IMPLIB_EXT)
+IMP_SOLINK          = $(OS_LIB_PREFIX)$(PACKAGE)$(OS_IMPLIB_EXT)
+
+IMPLIB_DEF          = lib/$(IMP_DEF)
+IMPLIB_VER          = lib/$(IMP_VER)
+IMPLIB_SONAME       = lib/$(IMP_SONAME)
+IMPLIB_SOLINK       = lib/$(IMP_SOLINK)
+
+APP                 = bin/$(OS_APP_PREFIX)$(NICKNAME)$(OS_APP_SUFFIX)
+DEFAULT_APP         = bin/$(OS_APP_PREFIX)$(NICKNAME)-default$(OS_APP_SUFFIX)
+SHARED_APP          = bin/$(OS_APP_PREFIX)$(NICKNAME)-shared$(OS_APP_SUFFIX)
+STATIC_APP          = bin/$(OS_APP_PREFIX)$(NICKNAME)-static$(OS_APP_SUFFIX)
+
+CFLAGS              = $(CFLAGS_DEBUG)   $(CFLAGS_CONFIG)  $(CFLAGS_SYSROOT) \
+                      $(CFLAGS_COMMON)  $(CFLAGS_CMDLINE) $(CFLAGS_HOST)     \
+                      $(CFLAGS_PATH)    $(CFLAGS_OS)      $(CFLAGS_SITE)      \
+                      $(CFLAGS_VERSION) $(CFLAGS_STRICT)                       \
+                      $(CFLAGS_LAST)    $(CFLAGS_ONCE)
+
+CFLAGS_SHARED       = $(CFLAGS) $(CFLAGS_PIC) $(CFLAGS_SHARED_ATTR)
+CFLAGS_STATIC       = $(CFLAGS) $(CFLAGS_OBJ) $(CFLAGS_STATIC_ATTR)
+CFLAGS_APP          = $(CFLAGS) $(CFLAGS_OBJ) $(CFLAGS_APP_ATTR) $(CFLAGS_UTIL)
+
+LDFLAGS_SHARED      = $(LDFLAGS_DEBUG)   $(LDFLAGS_CONFIG)  $(LDFLAGS_SYSROOT) \
+                      $(LDFLAGS_COMMON)  $(LDFLAGS_CMDLINE) $(LDFLAGS_HOST)     \
+                      $(LDFLAGS_PATH)    $(SHARED_LIB_DEPS) $(LDFLAGS_STRICT)    \
+                      $(LDFLAGS_LAST)    $(LDFLAGS_ONCE)
+
+LDFLAGS_APP         = $(LDFLAGS_DEBUG)   $(LDFLAGS_CONFIG)  $(LDFLAGS_SYSROOT) \
+                      $(LDFLAGS_COMMON)  $(LDFLAGS_CMDLINE) $(LDFLAGS_HOST)     \
+                      $(LDFLAGS_PATH)    $(SHARED_APP_DEPS) $(LDFLAGS_STRICT)    \
+                      $(LDFLAGS_UTIL)    $(LDFLAGS_LAST)    $(LDFLAGS_ONCE)
+
+LDFLAGS_STATIC      = $(LDFLAGS_DEBUG)   $(LDFLAGS_CONFIG)  $(LDFLAGS_SYSROOT) \
+                      $(LDFLAGS_COMMON)  $(LDFLAGS_CMDLINE) $(LDFLAGS_HOST)     \
+                      $(LDFLAGS_PATH)    $(STATIC_APP_DEPS) $(LDFLAGS_STRICT)    \
+                      $(LDFLAGS_LAST)    $(LDFLAGS_ONCE)
diff --git a/sofort/core/flavor.mk b/sofort/core/flavor.mk
new file mode 100644
index 0000000..85c41a2
--- /dev/null
+++ b/sofort/core/flavor.mk
@@ -0,0 +1,73 @@
+# flavor.mk: top-level handling of build flavors.
+# this file is covered by COPYING.SOFORT.
+
+ifneq ($(OS_DSO_EXRULES),)
+include $(PROJECT_DIR)/sofort/exrules/$(OS_DSO_EXRULES).mk
+endif
+
+ifeq ($(DISABLE_STATIC),yes)
+package-static:
+package-install-static:
+else
+package-static:		static
+package-install-static:	install-static
+endif
+
+ifeq ($(DISABLE_SHARED),yes)
+package-shared:
+package-install-shared:
+else
+package-shared:		shared
+package-install-shared:	install-shared
+endif
+
+
+
+ifeq ($(DISABLE_FRONTEND),yes)
+app-tag:
+package-install-app:
+package-install-extras:
+else
+app-tag:		package-app app.tag
+package-install-app:	install-app
+package-install-extras:	install-extras
+endif
+
+
+
+ifeq ($(ALL_STATIC),yes)
+
+package-app:	static-app
+app:		PACKAGE_APP = $(STATIC_APP)
+app-tag:	PACKAGE_APP = $(STATIC_APP)
+app.tag:	$(STATIC_APP)
+
+
+else ifeq ($(ALL_SHARED),yes)
+
+package-app:	shared-app
+app:		PACKAGE_APP = $(SHARED_APP)
+app-tag:	PACKAGE_APP = $(SHARED_APP)
+app.tag:	$(SHARED_APP)
+
+
+else
+
+package-app:	default-app
+app:		PACKAGE_APP = $(DEFAULT_APP)
+app-tag:	PACKAGE_APP = $(DEFAULT_APP)
+app.tag:	$(DEFAULT_APP)
+
+endif
+
+
+
+ifeq ($(CUSTOM_INSTALL_HEADERS),yes)
+
+install-headers:install-headers-custom
+
+else
+
+install-headers:install-headers-default
+
+endif
diff --git a/sofort/core/pkgconf.mk b/sofort/core/pkgconf.mk
new file mode 100644
index 0000000..0edc395
--- /dev/null
+++ b/sofort/core/pkgconf.mk
@@ -0,0 +1,45 @@
+# pkgconf.mk: rules for pkgconf manifest generation.
+# this file is covered by COPYING.SOFORT.
+
+ifeq ($(PKGCONF),no)
+
+install-pkgconf:
+
+else
+
+PKGCONF_VERSION = $(VER_MAJOR).$(VER_MINOR).$(VER_PATCH)
+
+build/$(PACKAGE).pc: .pkgconf dirs.tag
+
+build/$(PACKAGE).pc:
+	@touch $@
+	@chmod 0644 $@
+		PKGCONF_NAME='$(PKGNAME)' \
+		PKGCONF_DESC='$(PKGDESC)' \
+		PKGCONF_USRC='$(PKGUSRC)' \
+		PKGCONF_REPO='$(PKGREPO)' \
+		PKGCONF_PSRC='$(PKGPSRC)' \
+		PKGCONF_DURL='$(PKGDURL)' \
+		PKGCONF_BUGS='$(PKGBUGS)' \
+		PKGCONF_HOME='$(PKGHOME)' \
+		PKGCONF_DEFS='$(PKGDEFS)' \
+		PKGCONF_LIBS='$(PKGLIBS)' \
+					  \
+		PKGCONF_EXEC_PREFIX='$(EXEC_PREFIX)' \
+		PKGCONF_PREFIX='$(PREFIX)'           \
+		PKGCONF_LIBDIR='$(LIBDIR)'           \
+		PKGCONF_INCLUDEDIR='$(INCLUDEDIR)'   \
+		PKGCONF_VERSION='$(PKGCONF_VERSION)' \
+	$(PROJECT_DIR)/sofort/tools/pkgconf.sh > $@
+
+install-pkgconf: build/$(PACKAGE).pc
+	mkdir -p $(DESTDIR)$(LIBDIR)/pkgconfig
+	cp -p build/$(PACKAGE).pc    $(DESTDIR)$(LIBDIR)/pkgconfig
+
+install-shared: install-pkgconf
+
+install-static: install-pkgconf
+
+.PHONY: .pkgconf install-pkgconf
+
+endif
diff --git a/sofort/core/version.mk b/sofort/core/version.mk
new file mode 100644
index 0000000..eb6c2f2
--- /dev/null
+++ b/sofort/core/version.mk
@@ -0,0 +1,66 @@
+# version.mk: handling of shared library versioning schemes.
+# this file is covered by COPYING.SOFORT.
+
+include $(PROJECT_DIR)/project/tagver.mk
+
+CFLAGS_VERSION	+= -D$(VER_NAMESPACE)_TAG_VER_MAJOR=$(VER_MAJOR)
+CFLAGS_VERSION	+= -D$(VER_NAMESPACE)_TAG_VER_MINOR=$(VER_MINOR)
+CFLAGS_VERSION	+= -D$(VER_NAMESPACE)_TAG_VER_PATCH=$(VER_PATCH)
+
+ifeq ($(AVOID_VERSION),yes)
+
+VER_XYZ		=
+VER_SONAME	=
+
+package-shared-soname:
+package-shared-solink:
+package-install-soname:
+package-install-solink:
+
+else
+
+VER_XYZ		= .$(VER_MAJOR).$(VER_MINOR).$(VER_PATCH)
+VER_SONAME	= .$(VER_MAJOR)
+
+package-shared-soname:	shared-soname
+package-shared-solink:	shared-solink
+package-install-soname:	install-soname
+package-install-solink:	install-solink
+
+
+
+# libfoo.so (common)
+install-solink:		install-lib
+			rm -f $(SHARED_SOLINK).tmp
+			ln -s $(DSO_VER) $(SHARED_SOLINK).tmp
+			mv $(SHARED_SOLINK).tmp $(DESTDIR)$(LIBDIR)/$(DSO_SOLINK)
+
+$(SHARED_SOLINK):	$(SHARED_LIB)
+			rm -f $@.tmp
+			ln -s $(DSO_VER) $@.tmp
+			mv $@.tmp $@
+
+# libfoo.so.x (symlink)
+ifeq ($(OS_SONAME),symlink)
+$(SHARED_SONAME):	$(SHARED_LIB)
+			rm -f $@.tmp
+			ln -s $(DSO_VER) $@.tmp
+			mv $@.tmp $@
+
+install-soname:		install-lib
+			rm -f $(SHARED_SONAME).tmp
+			ln -s $(DSO_VER) $(SHARED_SONAME).tmp
+			mv $(SHARED_SONAME).tmp $(DESTDIR)$(LIBDIR)/$(DSO_SONAME)
+endif
+
+
+# libfoo.so.x (copy)
+ifeq ($(OS_SONAME),copy)
+install-soname:		install-lib
+			cp $(SHARED_LIB) $(DESTDIR)$(LIBDIR)/$(DSO_SONAME)
+
+$(SHARED_SONAME):	$(SHARED_LIB)
+			cp $(SHARED_LIB) $(SHARED_SONAME)
+endif
+
+endif
diff --git a/sofort/exrules/default.mk b/sofort/exrules/default.mk
new file mode 100644
index 0000000..b830cd0
--- /dev/null
+++ b/sofort/exrules/default.mk
@@ -0,0 +1,11 @@
+# default.mk: default shared library rules.
+# this file is covered by COPYING.SOFORT.
+
+DSO_REF_VER      = $(SHARED_LIB)
+DSO_REF_SONAME   = $(SHARED_SONAME)
+DSO_REF_SOLINK   = $(SHARED_SOLINK)
+
+LDFLAGS_SHARED  += -Wl,-soname
+LDFLAGS_SHARED  += -Wl,$(DSO_SONAME)
+
+.PHONY:         $(IMPLIB_DEF) $(IMPLIB_VER) $(IMPLIB_SONAME) $(IMPLIB_SOLINK)
diff --git a/sofort/exrules/pe-common.mk b/sofort/exrules/pe-common.mk
new file mode 100644
index 0000000..3e132a9
--- /dev/null
+++ b/sofort/exrules/pe-common.mk
@@ -0,0 +1,42 @@
+# pe-common.mk: common PE shared library rules.
+# this file is covered by COPYING.SOFORT.
+
+DSO_REF_VER      = $(IMPLIB_VER)
+DSO_REF_SONAME   = $(IMPLIB_SONAME)
+DSO_REF_SOLINK   = $(IMPLIB_SOLINK)
+
+LDFLAGS_IMPLIB	+= -Wl,--output-def
+LDFLAGS_IMPLIB	+= -Wl,$(IMPLIB_DEF)
+
+LDFLAGS_SONAME	+= -Wl,-soname
+LDFLAGS_SONAME	+= -Wl,$(DSO_SONAME)
+LDFLAGS_SHARED	+= $(LDFLAGS_SONAME)
+
+DSO_LIBPATH	?= loader
+PE_SUBSYSTEM	?= windows
+LDFLAGS_COMMON	+= -Wl,--subsystem=$(PE_SUBSYSTEM)
+
+implib:			implib-ver package-implib-soname package-implib-solink
+
+implib-ver:		shared-lib $(IMPLIB_VER)
+
+implib-soname:		shared-lib $(IMPLIB_SONAME)
+
+implib-solink:		shared-lib $(IMPLIB_SOLINK)
+
+$(IMPLIB_DEF):		shared-lib
+
+install-implib:		install-implib-ver \
+			package-install-implib-soname \
+			package-install-implib-solink
+
+install-implib-ver:	implib-ver
+			mkdir -p $(DESTDIR)$(LIBDIR)
+			cp $(IMPLIB_VER) $(DESTDIR)$(LIBDIR)
+
+clean-implib:
+			rm -f $(SHARED_LIB)
+			rm -f $(IMPLIB_DEF)
+			rm -f $(IMPLIB_VER)
+			rm -f $(IMPLIB_SONAME)
+			rm -f $(IMPLIB_SOLINK)
diff --git a/sofort/exrules/pe-dlltool.mk b/sofort/exrules/pe-dlltool.mk
new file mode 100644
index 0000000..0fc1adf
--- /dev/null
+++ b/sofort/exrules/pe-dlltool.mk
@@ -0,0 +1,18 @@
+# pe-dlltool.mk: PE shared library rules for targets using dlltool.
+# this file is covered by COPYING.SOFORT.
+
+include $(PROJECT_DIR)/sofort/exrules/pe-common.mk
+
+$(IMPLIB_VER):		$(IMPLIB_DEF)
+			$(DLLTOOL) -l $(IMPLIB_VER) -d $(IMPLIB_DEF) -D $(DSO_VER)
+
+ifeq ($(AVOID_VERSION),yes)
+
+else
+
+$(IMPLIB_SONAME):	$(IMPLIB_DEF)
+			$(DLLTOOL) -l $(IMPLIB_SONAME) -d $(IMPLIB_DEF) -D $(DSO_SONAME)
+
+endif
+
+include $(PROJECT_DIR)/sofort/exrules/pe-version.mk
diff --git a/sofort/exrules/pe-mdso.mk b/sofort/exrules/pe-mdso.mk
new file mode 100644
index 0000000..9a3b941
--- /dev/null
+++ b/sofort/exrules/pe-mdso.mk
@@ -0,0 +1,18 @@
+# pe-mdso.mk: PE shared library rules for targets using mdso.
+# this file is covered by COPYING.SOFORT.
+
+include $(PROJECT_DIR)/sofort/exrules/pe-common.mk
+
+$(IMPLIB_VER):		$(IMPLIB_DEF)
+			$(MDSO) -m $(CC_BITS) -i $(IMPLIB_VER) -n $(DSO_VER) -l $(DSO_LIBPATH) $<
+
+ifeq ($(AVOID_VERSION),yes)
+
+else
+
+$(IMPLIB_SONAME):	$(IMPLIB_DEF)
+			$(MDSO) -m $(CC_BITS) -i $(IMPLIB_SONAME) -n $(DSO_SONAME) $(IMPLIB_DEF)
+
+endif
+
+include $(PROJECT_DIR)/sofort/exrules/pe-version.mk
diff --git a/sofort/exrules/pe-version.mk b/sofort/exrules/pe-version.mk
new file mode 100644
index 0000000..97ad4ca
--- /dev/null
+++ b/sofort/exrules/pe-version.mk
@@ -0,0 +1,34 @@
+# pe-version.mk: handling of PE shared library versioning schemes.
+# this file is covered by COPYING.SOFORT.
+
+ifeq ($(AVOID_VERSION),yes)
+
+package-implib-soname:
+package-implib-solink:
+package-install-implib-soname:
+package-install-implib-solink:
+
+else
+
+package-implib-soname:		implib-soname
+package-implib-solink:		implib-solink
+package-install-implib-soname:	install-implib-soname
+package-install-implib-solink:	install-implib-solink
+
+
+$(IMPLIB_SOLINK):	$(IMPLIB_SONAME)
+			rm -f $(IMPLIB_SOLINK).tmp
+			ln -s $(IMP_SONAME) $(IMPLIB_SOLINK).tmp
+			mv $(IMPLIB_SOLINK).tmp $(IMPLIB_SOLINK)
+
+install-implib-soname:	implib-soname
+			mkdir -p $(DESTDIR)$(LIBDIR)
+			cp $(IMPLIB_SONAME) $(DESTDIR)$(LIBDIR)
+
+install-implib-solink:	implib-soname
+			mkdir -p $(DESTDIR)$(LIBDIR)
+			rm -f $(IMPLIB_SOLINK).tmp
+			ln -s $(IMP_SONAME) $(IMPLIB_SOLINK).tmp
+			mv $(IMPLIB_SOLINK).tmp $(DESTDIR)$(LIBDIR)/$(IMP_SOLINK)
+
+endif
diff --git a/sofort/tools/pkgconf.sh b/sofort/tools/pkgconf.sh
new file mode 100755
index 0000000..a69c25b
--- /dev/null
+++ b/sofort/tools/pkgconf.sh
@@ -0,0 +1,136 @@
+#!/bin/sh
+
+# pkgconf.sh: generate a pkgconf manifest file.
+# this file is covered by COPYING.SOFORT.
+
+set -eu
+
+# prefix, exec_prefix
+if [ "$PKGCONF_PREFIX" = "$PKGCONF_EXEC_PREFIX" ]; then
+	pkgconf_prefix="${PKGCONF_PREFIX}"
+	pkgconf_exec_prefix='${prefix}'
+else
+	pkgconf_prefix="${PKGCONF_PREFIX}"
+	pkgconf_exec_prefix="${PKGCONF_EXEC_PREFIX}"
+fi
+
+
+# (relative) includedir
+if [ -z "$PKGCONF_INCLUDEDIR" ]; then
+	pkgconf_includedir=
+	pkgconf_cflags=
+else
+	prefix=$(dirname "$PKGCONF_INCLUDEDIR")
+	base=$(basename "$PKGCONF_INCLUDEDIR")
+
+	if [ "$prefix" = '/' ]; then
+		prefix=
+	fi
+
+	if [ "$prefix/$base" = "$PKGCONF_PREFIX/$base" ]; then
+		pkgconf_includedir='${prefix}/'"${base}"
+		pkgconf_cflags='-I${includedir}'
+	else
+		pkgconf_includedir="${PKGCONF_INCLUDEDIR}"
+		pkgconf_cflags='-I${includedir}'
+	fi
+fi
+
+
+# (relative) libdir (blank unless needed)
+if [ -z "$PKGCONF_LIBDIR" ]; then
+	pkgconf_libdir=
+else
+	prefix=$(dirname "$PKGCONF_LIBDIR")
+	base=$(basename "$PKGCONF_LIBDIR")
+
+	if [ "$prefix" = '/' ]; then
+		prefix=
+	fi
+
+	if [ "$prefix/$base" = "$PKGCONF_EXEC_PREFIX/$base" ]; then
+		pkgconf_libdir='${exec_prefix}/'"${base}"
+	else
+		pkgconf_libdir='${prefix}/'"${PKGCONF_LIBDIR}"
+	fi
+fi
+
+
+# ldflags (--libs)
+if [ -n "$pkgconf_libdir" ] &&  [ -n "${PKGCONF_NAME}" ]; then
+	pkgconf_ldflags='-L${libdir}'" -l${PKGCONF_NAME}"
+elif [ -n "${PKGCONF_NAME}" ]; then
+	pkgconf_ldflags="-l${PKGCONF_NAME}"
+else
+	pkgconf_ldflags='-L${libdir}'
+fi
+
+
+# cflags
+if [ -n "$pkgconf_cflags" ] || [ -n "${PKGCONF_DEFS}" ]; then
+	pkgconf_cflags="$pkgconf_cflags ${PKGCONF_DEFS}"
+	pkgconf_cflags=$(printf '%s' "$pkgconf_cflags" | sed -e 's/^[ \t]*//g')
+fi
+
+
+# repo (optional)
+if [ -z "${PKGCONF_REPO}" ]; then
+	pkgconf_repo='#'
+else
+	pkgconf_repo="Repo:        ${PKGCONF_REPO}"
+fi
+
+# patches (optional)
+if [ -z "${PKGCONF_PSRC}" ]; then
+	pkgconf_psrc='#'
+else
+	pkgconf_psrc="Patches:     ${PKGCONF_PSRC}"
+fi
+
+# distro (optional)
+if [ -z "${PKGCONF_DURL}" ]; then
+	pkgconf_durl='#'
+else
+	pkgconf_durl="Distro:      ${PKGCONF_DURL}"
+fi
+
+# bug reports (optional)
+if [ -z "${PKGCONF_BUGS}" ]; then
+	pkgconf_bugs='#'
+else
+	pkgconf_bugs="Bug reports: ${PKGCONF_BUGS}"
+fi
+
+# project home page (optional)
+if [ -z "${PKGCONF_HOME}" ]; then
+	pkgconf_home='#'
+else
+	pkgconf_home="Home page:   ${PKGCONF_HOME}"
+fi
+
+
+# output (without trailing spaces)
+cat << _EOF | grep -v '^#' | sed 's/[ \t]*$//'
+###
+prefix=$pkgconf_prefix
+exec_prefix=$pkgconf_exec_prefix
+includedir=$pkgconf_includedir
+libdir=$pkgconf_libdir
+
+Name:        ${PKGCONF_NAME}
+Description: ${PKGCONF_DESC}
+URL:         ${PKGCONF_USRC}
+Version:     ${PKGCONF_VERSION}
+$pkgconf_repo
+$pkgconf_psrc
+$pkgconf_durl
+$pkgconf_bugs
+$pkgconf_home
+
+Cflags:      $pkgconf_cflags
+Libs:        $pkgconf_ldflags
+###
+_EOF
+
+# all done
+exit 0
diff --git a/sofort/tools/version.sh b/sofort/tools/version.sh
new file mode 100755
index 0000000..8c49cb3
--- /dev/null
+++ b/sofort/tools/version.sh
@@ -0,0 +1,75 @@
+#!/bin/sh
+
+# version.sh: detect git repository info, output defs as a C header.
+# this file is covered by COPYING.SOFORT.
+
+set -eu
+
+usage()
+{
+cat << EOF >&2
+
+Usage:
+  -h            show this HELP message
+  -s  SRCDIR    set source directory
+  -o  OUTPUT    set output header
+  -p  PREFIX    set macro prefix
+
+EOF
+exit 1
+}
+
+
+# one
+workdir=$(pwd -P)
+srcdir=
+output=
+prefix=
+
+
+while getopts "hs:o:p:" opt; do
+	case $opt in
+	h)
+  		usage
+  		;;
+	s)
+    		srcdir="$OPTARG"
+    		;;
+	o)
+    		output="$OPTARG"
+    		;;
+	p)
+    		prefix="$OPTARG"
+    		;;
+	\?)
+		printf 'Invalid option: -%s' "$OPTARG" >&2
+    		usage
+    		;;
+	esac
+done
+
+
+# two
+if [ -z "$srcdir" ] || [ -z "$output" ] || [ -z "$prefix" ]; then
+	usage
+fi
+
+cd -- "$srcdir"
+
+gitver=$(git rev-parse --verify HEAD      2>/dev/null) || gitver="unknown"
+cvdate=$(git show -s --format=%ci $gitver 2>/dev/null) || cvdate=$(date)
+
+vmacro=$(printf '%s' "$prefix"'_GIT_VERSION' | tr '[:lower:]' '[:upper:]')
+dmacro=$(printf '%s' "$prefix"'_GIT_DATE   ' | tr '[:lower:]' '[:upper:]')
+
+cd -- "$workdir"
+
+
+# three
+printf '#define %s "%s"\n#define %s "%s"\n' \
+		"$vmacro" "$gitver" \
+		"$dmacro" "$cvdate" \
+	> "$output"
+
+# all done
+exit 0
diff --git a/src/empty.dir b/src/empty.dir
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/src/empty.dir