build.sh: 2nd refactoring pt. I.

build/{gcc,musl}.*.build: refactored into vars/{gcc,musl}.*.build.
build/pkg.build: merged w/ build.sh (structurally) and refactored into subr/pkg_*.subr (implementations.)
patches/gcc_native_x86_64_w64_mingw32.local.patch: fix wrong filename.
subr/build.subr: merges source_scripts() into build.sh.
subr/pkg.subr: accept either of ${PKG_..._{URL,VERSION}} when checking for missing entries in var/build.vars.
vars/build.vars: adds vars for {gcc,musl}_*.
vars/psxstub.vars: convert to pkg_..._all(); call pkg_fetch().

42 files changed, 986 insertions, 621 deletions

diff --git a/build.sh b/build.sh
index 3448fac9..0f3411ca 100755
--- a/build.sh
+++ b/build.sh
@@ -81,7 +81,7 @@ for BUILD_TARGET_LC in $(subst_tgts ${BUILD_TARGETS_META}); do
 					"$(get_var_unsafe PKG_${BUILD_PACKAGE}_URL)"		\
 					"$(get_var_unsafe PKG_${BUILD_PACKAGE}_URL_TYPE)";
 			else
-				check_pkg_updates "${BUILD_PACKAGE_LC}"			\
+				check_pkg_updates "${BUILD_PACKAGE_LC}"				\
 					"$(get_var_unsafe PKG_${BUILD_PACKAGE}_VERSION)"	\
 					"$(get_var_unsafe PKG_${BUILD_PACKAGE}_URL)"		\
 					"$(get_var_unsafe PKG_${BUILD_PACKAGE}_URL_TYPE)";
@@ -94,17 +94,48 @@ for BUILD_TARGET_LC in $(subst_tgts ${BUILD_TARGETS_META}); do
 			log_msg vnfo "Skipped \`${BUILD_PACKAGE_LC}' (already built.)";
 			: $((BUILD_NSKIP+=1)); BUILD_SCRIPT_RC=0; continue;
 		fi;
-		if [ -e build/${BUILD_PACKAGE_LC}.build ]; then
-			BUILD_SCRIPT_FNAME=build/${BUILD_PACKAGE_LC}.build;
-		else
-			BUILD_SCRIPT_FNAME=build/pkg.build;
+		if [ -n "${ARG_RESTART}" ]; then
+			log_msg vnfo "Forcing package \`${BUILD_PACKAGE_LC}'.";
 		fi;
-		log_msg vnfo "Invoking build script \`${BUILD_SCRIPT_FNAME}'${ARG_RESTART:+ (forcibly)} for package \`${BUILD_PACKAGE_LC}'.";
 		(set -o errexit -o noglob;
-		 MIDIPIX_BUILD_PWD=$(pwd); PKG_BUILD=${BUILD}; PKG_TARGET=${TARGET};
-		 PKG_PREFIX=$(get_vars_unsafe ${BUILD_TARGET}_PREFIX			\
-			PKG_${BUILD_PACKAGE%%.*}_PREFIX);				
-		 cd ${WORKDIR}; source_scripts);
+		MIDIPIX_BUILD_PWD=$(pwd);
+		PKG_BUILD=${BUILD};
+		PKG_PREFIX=$(get_vars_unsafe ${BUILD_TARGET}_PREFIX PKG_${BUILD_PACKAGE%%.*}_PREFIX);				
+		PKG_TARGET=${TARGET};
+		cd ${WORKDIR};
+		for SCRIPT_SOURCE in vars/${BUILD_PACKAGE_LC%.*}.vars; do
+			if [ -f ${MIDIPIX_BUILD_PWD}/${SCRIPT_SOURCE} ]; then
+				if [ ${ARG_DRYRUN:-0} -eq 1 ]; then
+					echo . ${MIDIPIX_BUILD_PWD}/${SCRIPT_SOURCE};
+				else
+					. ${MIDIPIX_BUILD_PWD}/${SCRIPT_SOURCE};
+				fi;
+			fi;
+		done;
+		parse_with_pkg_name ${BUILD_PACKAGE_LC%.*};
+		for __ in all disabled fetch extract build_dir patch_pre autoconf patch setup	\
+				configure clean build install; do
+			case ${__} in
+			all)
+				if test_cmd pkg_${PKG_NAME}_all; then
+					pkg_${PKG_NAME}_all; exit 0;
+				fi;
+				;;
+			disabled|build_dir|setup)
+				pkg_${__};
+				;;
+			*)	if ! is_build_script_done ${__}; then
+					if test_cmd pkg_${PKG_NAME}_${__}; then
+						pkg_${PKG_NAME}_${__};
+					else
+						pkg_${__};
+					fi;
+				fi;
+				;;
+			esac;
+		done;
+		set_build_script_done finish;
+		);
 		BUILD_SCRIPT_RC=${?}; case ${BUILD_SCRIPT_RC} in
 		0) log_msg succ "Finished \`${BUILD_PACKAGE_LC}' build.";
 			: $((BUILD_NFINI+=1)); continue; ;;
diff --git a/build/gcc.full.build b/build/gcc.full.build
deleted file mode 100644
index ee597167..00000000
--- a/build/gcc.full.build
+++ /dev/null
@@ -1,198 +0,0 @@
-#
-# . ./build.vars and set -o errexit -o noglob are assumed.
-#
-
-if [ "${3}" = mingw_w64 ]; then
-	TARGET=x86_64-w64-mingw32;
-	PKG_TARGET=x86_64-w64-mingw32;
-	if [ ! -L ${PREFIX}/${TARGET}/mingw ]; then
-		secure_rm ${PREFIX}/${TARGET}/mingw;
-		ln -sf . ${PREFIX}/${TARGET}/mingw;
-	fi;
-fi;
-
-# Order: stage1, runtime, full, native
-
-export MAKE="make LIBTOOL=slibtool";
-if [ "${2}" = runtime ]\
-||   [ "${2}" = libstdc++-v3 ]\
-||   [ "${2}" = full ]; then
-	set_build_dir cbb-gcc-${PKG_GCC_VERSION} cross;
-	cd ${PKG_BUILD_DIR};
-	if [ "${2}" = runtime ]; then
-		# GCC, compiler runtime.
-		if ! is_build_script_done build; then
-			make ${MAKEFLAGS} all-target-libgcc;
-			set_build_script_done build -install;
-		fi;
-		if ! is_build_script_done install; then
-			make ${MAKEFLAGS} install-target-libgcc;
-			set_build_script_done install finish;
-		fi;
-	elif [ "${2}" = libstdc++-v3 ]; then
-		# GCC, libstdc++-v3.
-		if ! is_build_script_done build; then
-			make ${MAKEFLAGS} all-target-libstdc++-v3;
-			set_build_script_done build -install;
-		fi;
-		if ! is_build_script_done install; then
-			make ${MAKEFLAGS} install-target-libstdc++-v3;
-			set_build_script_done install finish;
-		fi;
-	elif [ "${2}" = full ]; then
-		# GCC, everything else.
-		if ! is_build_script_done build; then
-			make ${MAKEFLAGS};
-			set_build_script_done build -install;
-		fi;
-		if ! is_build_script_done install; then
-			make ${MAKEFLAGS} install;
-			set_build_script_done install finish;
-		fi;
-	fi;
-else
-	if [ "${2}" = stage1 ]\
-	|| [ "${2}" = host ]; then
-		# GCC, stage1.
-		if ! is_build_script_done fetch; then
-			fetch_git cbb-gcc-${PKG_GCC_VERSION}		\
-				${GITROOT}/cbb/cbb-gcc-${PKG_GCC_VERSION};
-			set_build_script_done fetch -configure;
-		fi;
-		set_build_dir cbb-gcc-${PKG_GCC_VERSION} cross;
-		export	cbb_ldflags_for_target=--sysroot=${PKG_PREFIX}	\
-			cbb_sysroot_for_libgcc=${PKG_PREFIX}		\
-			cbb_target=${TARGET}				\
-			cbb_neutral_libiberty=no			\
-			cbb_xgcc_for_specs=${WORKDIR}/${PKG_BUILD_DIR}/gcc/xgcc;
-		GCCTARGET_FLAGS="-DIN_TARGET_LIBRARY_BUILD --sysroot=${PKG_PREFIX}";
-	elif [ "${2}" = native ]; then
-		# GCC, native.
-		set_build_dir cbb-gcc-${PKG_GCC_VERSION} native;
-		export 	cbb_ldflags_for_target=--sysroot=${PKG_PREFIX}	\
-			cbb_sysroot_for_libgcc=${PKG_PREFIX}		\
-			cbb_target=${TARGET}				\
-			cbb_xgcc_for_specs=${TARGET}-gcc		\
-			sysroot_headers_suffix=${PKG_PREFIX};
-		GCCTARGET_FLAGS="-DIN_TARGET_LIBRARY_BUILD --sysroot=${PKG_PREFIX}";
-	fi;
-	GCCFLAGS="${CFLAGS:+${CFLAGS} }--include $(readlink -f ${WORKDIR}/cbb-gcc-${PKG_GCC_VERSION}/libc/cbb-musl-pe.h)";
-	for __ in CFLAGS CFLAGS_FOR_BUILD CPPFLAGS_FOR_BUILD CXXFLAGS CXXFLAGS_FOR_BUILD; do
-		export "${__}=${GCCFLAGS}";
-	done;
-	for __ in CFLAGS_FOR_TARGET CPPFLAGS_FOR_TARGET CXXFLAGS_FOR_TARGET LIBCFLAGS_FOR_TARGET XGCC_FLAGS_FOR_TARGET; do
-		export "${__}=${GCCTARGET_FLAGS}";
-	done;
-	for __ in cbb_cflags_for_stage1 cbb_cflags_for_stage2 cbb_cflags_for_stage3 cbb_cflags_for_stage4; do
-		export "${__}=${CFLAGS_FOR_BUILD}" ;
-	done;
-	export CFLAGS CXXFLAGS CFLAGS_FOR_BUILD CPPFLAGS_FOR_BUILD CXXFLAGS_FOR_BUILD CFLAGS_FOR_TARGET XGCC_FLAGS_FOR_TARGET CPPFLAGS_FOR_TARGET CXXFLAGS_FOR_TARGET LIBCFLAGS_FOR_TARGET;
-	if ! is_build_script_done configure; then
-		if [ "${2}" = stage1 ]\
-		|| [ "${2}" = host ]; then
-			insecure_mkdir ${PKG_PREFIX}/include;
-			[ \! -d ${PKG_PREFIX}/usr ] &&			\
-				ln -s -- . ${PKG_PREFIX}/usr;
-			_configure_args="--prefix=${PREFIX} --with-sysroot=${PKG_PREFIX}";
-		elif [ "${2}" = native ]; then
-			insecure_mkdir ${PKG_PREFIX}/${TARGET};
-			if [ \! -d ${PKG_PREFIX}/${TARGET}/usr ]; then
-				ln -s -- . ${PKG_PREFIX}/${TARGET}/usr;
-			fi;
-			if [ "${ARCH}" = nt32 ]; then
-				_configure_args="--host=i686-nt32-midipix";
-			else
-				_configure_args="--host=x86_64-nt64-midipix";
-			fi;
-			_configure_args="${_configure_args}	\
-				--prefix=/			\
-				--with-elf=${PKG_PREFIX}	\
-				--with-gmp=${PKG_PREFIX}	\
-				--with-mpc=${PKG_PREFIX}	\
-				--with-mpfr=${PKG_PREFIX}	\
-				--with-sysroot=";
-		fi;
-		if [ "${TARGET#*mingw*}" != "${TARGET}" ]; then
-			_configure_args="${_configure_args}	\
-				--enable-sjlj-exceptions";
-			if [ "${2}" != host ]; then
-				_configure_args="${_configure_args}	\
-					--host=${TARGET}		\
-					--without-headers";
-				export AR=${PKG_TARGET}-ar;
-				export AS=${PKG_TARGET}-as;
-				export CC=${PKG_TARGET}-gcc;
-				export CXX=${PKG_TARGET}-c++;
-				export RANLIB=${PKG_TARGET}-ranlib;
-			fi;
-		else
-			_configure_args="${_configure_args}	\
-				--disable-sjlj-exceptions";
-		fi;
-		if [ "${3}" = mingw_w64 ]\
-		&& [ -r ${MIDIPIX_BUILD_PWD}/patches/${PKG_NAME}.${2}.${3}.local.patch ]; then
-			patch -b -d ${PKG_SUBDIR} -p1 < ${MIDIPIX_BUILD_PWD}/patches/${PKG_NAME}.${2}.${3}.local.patch;
-		fi;
-		secure_rm ${PKG_BUILD_DIR};
-		insecure_mkdir ${PKG_BUILD_DIR};
-		secure_cd ${PKG_BUILD_DIR};
-		../cbb-gcc-${PKG_GCC_VERSION}/configure		\
-			--disable-bootstrap			\
-			--disable-libmudflap			\
-			--disable-multilib			\
-			--disable-nls				\
-			--disable-obsolete			\
-			--disable-symvers			\
-			--enable-canonical-system-headers	\
-			--enable-__cxa_atexit			\
-			--enable-debug				\
-			--enable-gnu-indirect-function		\
-			--enable-gnu-unique-object		\
-			--enable-initfini-array			\
-			--enable-languages=c,c++,objc,lto	\
-			--enable-libstdcxx-debug		\
-			--enable-lto				\
-			--enable-multiarch			\
-			--enable-secureplt			\
-			--enable-shared				\
-			--enable-threads=posix			\
-			--target=${TARGET}			\
-			--with-fpmath=sse			\
-			${_configure_args};
-		set_build_script_done configure clean -build;
-	else
-		cd ${PKG_BUILD_DIR};
-	fi;
-	if ! is_build_script_done clean; then
-		make ${MAKEFLAGS} clean;
-		set_build_script_done clean -build;
-	fi;
-	if ! is_build_script_done build; then
-		if [ "${2}" = stage1 ]\
-		|| [ "${2}" = host ]; then
-			make ${MAKEFLAGS} all-gcc;
-		elif [ "${2}" = native ]; then
-			make ${MAKEFLAGS} all-gcc;
-			make ${MAKEFLAGS} all-target-libgcc;
-			make ${MAKEFLAGS} all-target-libstdc++-v3;
-			make ${MAKEFLAGS} all;
-		fi;
-		set_build_script_done build -install;
-	fi;
-	if ! is_build_script_done install; then
-		if [ "${2}" = stage1 ]\
-		|| [ "${2}" = host ]; then
-			make ${MAKEFLAGS} install-gcc;
-			__="$(uname -s)";
-			if [ "${__#*CYGWIN*}" != "${__}" ]; then
-				ln -s -- ${PREFIX}/libexec/gcc/${TARGET}/${PKG_GCC_VERSION}/liblto_plugin.dll.a	\
-					ln -s -- ${PREFIX}/libexec/gcc/${TARGET}/${PKG_GCC_VERSION}/liblto_plugin.so;
-			fi;
-		elif [ "${2}" = native ]; then
-			make ${MAKEFLAGS} DESTDIR=${PKG_PREFIX} install;
-		fi;
-		set_build_script_done install finish;
-	fi;
-fi;
-
-# vim:filetype=sh
diff --git a/build/gcc.host.mingw_w64.build b/build/gcc.host.mingw_w64.build
deleted file mode 120000
index b809d40d..00000000
--- a/build/gcc.host.mingw_w64.build
+++ /dev/null
@@ -1 +0,0 @@
-gcc.full.build
\ No newline at end of file
diff --git a/build/gcc.libstdc++-v3.build b/build/gcc.libstdc++-v3.build
deleted file mode 120000
index b809d40d..00000000
--- a/build/gcc.libstdc++-v3.build
+++ /dev/null
@@ -1 +0,0 @@
-gcc.full.build
\ No newline at end of file
diff --git a/build/gcc.native.build b/build/gcc.native.build
deleted file mode 120000
index b809d40d..00000000
--- a/build/gcc.native.build
+++ /dev/null
@@ -1 +0,0 @@
-gcc.full.build
\ No newline at end of file
diff --git a/build/gcc.runtime.build b/build/gcc.runtime.build
deleted file mode 120000
index b809d40d..00000000
--- a/build/gcc.runtime.build
+++ /dev/null
@@ -1 +0,0 @@
-gcc.full.build
\ No newline at end of file
diff --git a/build/gcc.stage1.build b/build/gcc.stage1.build
deleted file mode 120000
index b809d40d..00000000
--- a/build/gcc.stage1.build
+++ /dev/null
@@ -1 +0,0 @@
-gcc.full.build
\ No newline at end of file
diff --git a/build/gcc.stage1.mingw_w64.build b/build/gcc.stage1.mingw_w64.build
deleted file mode 120000
index b809d40d..00000000
--- a/build/gcc.stage1.mingw_w64.build
+++ /dev/null
@@ -1 +0,0 @@
-gcc.full.build
\ No newline at end of file
diff --git a/build/musl.full.build b/build/musl.full.build
deleted file mode 100644
index 35d1de28..00000000
--- a/build/musl.full.build
+++ /dev/null
@@ -1,68 +0,0 @@
-#
-# . ./build.vars and set -o errexit -o noglob are assumed.
-#
-
-# Order: no-complex, native
-
-# Git clone what we need.
-fetch_git lazy ${GITROOT}/lazy;
-
-export lz_arch=${ARCH} lz_cflags_debug=-O2 lz_target=${TARGET};
-
-if [ "${2}" = no-complex ]; then
-	# Musl: build (no-complex)
-	_install=install_no_complex;
-	set_build_dir musl-${PKG_MUSL_VERSION}-${2} cross;
-	if ! is_build_script_done fetch; then
-		fetch http://www.musl-libc.org/releases/musl-${PKG_MUSL_VERSION}.tar.gz	\
-			${PKG_MUSL_SHA256SUM};
-		secure_rm mmglue;
-		fetch_git mmglue ${GITROOT}/mmglue;
-		set_build_script_done fetch -extract;
-	fi;
-	if ! is_build_script_done extract; then
-		secure_rm musl-${PKG_MUSL_VERSION};
-		tar -xf ${DLCACHEDIR}/musl-${PKG_MUSL_VERSION}.tar.gz;
-		set +o noglob; cp -R -- mmglue/* musl-${PKG_MUSL_VERSION}/; set -o noglob;
-		set_build_script_done extract -configure;
-	fi;
-elif [ "${2}" = native ]; then
-	# Musl: build (full)
-	_install=install;
-	set_build_dir musl-${PKG_MUSL_VERSION} "${2}";
-elif [ "${2}" = full ]; then
-	# Musl: build (full)
-	_install=install;
-	set_build_dir musl-${PKG_MUSL_VERSION} cross;
-fi;
-if ! is_build_script_done configure; then
-	secure_rm ${PKG_BUILD_DIR};
-	insecure_mkdir ${PKG_BUILD_DIR};
-	secure_cd ${PKG_BUILD_DIR};
-	env	lz_cflags_cmdline="${PKG_MUSL_CFLAGS_CONFIGURE_EXTRA}"	\
-		lz_debug="yes"						\
-	../lazy/lazy				\
-		-a ${ARCH}			\
-		-c gcc				\
-		-f ${PKG_PREFIX}		\
-		-n musl				\
-		-p ../musl-${PKG_MUSL_VERSION}	\
-		-t ${lz_target}			\
-		-x config;
-	set_build_script_done configure clean -build;
-else
-	cd ${PKG_BUILD_DIR};
-fi;
-if ! is_build_script_done clean; then
-	make ${MAKEFLAGS} clean;
-	set_build_script_done clean -build;
-fi;
-if ! is_build_script_done build; then
-	./lazy	-e ${_install}			\
-		-x build;
-	[ "${2}" = native ] &&			\
-		ln -sf -- ../lib/libc.so ${PKG_PREFIX}/bin/ldd;
-	set_build_script_done build finish;
-fi;
-
-# vim:filetype=sh
diff --git a/build/musl.native.build b/build/musl.native.build
deleted file mode 120000
index 2ed15f0d..00000000
--- a/build/musl.native.build
+++ /dev/null
@@ -1 +0,0 @@
-musl.full.build
\ No newline at end of file
diff --git a/build/musl.no-complex.build b/build/musl.no-complex.build
deleted file mode 120000
index 2ed15f0d..00000000
--- a/build/musl.no-complex.build
+++ /dev/null
@@ -1 +0,0 @@
-musl.full.build
\ No newline at end of file
diff --git a/build/pkg.build b/build/pkg.build
deleted file mode 100644
index 029980b4..00000000
--- a/build/pkg.build
+++ /dev/null
@@ -1,295 +0,0 @@
-#
-# . ./build.vars and set -o errexit -o noglob are assumed.
-#
-
-parse_with_pkg_name ${1};
-if [ ${PKG_DISABLED:-0} -eq 1 ]; then
-	exit 0;
-elif ! is_build_script_done fetch; then
-	if test_cmd pkg_${PKG_NAME}_fetch; then
-		pkg_${PKG_NAME}_fetch;
-	else
-		if [ "${PKG_URL_TYPE:-wget}" = wget ]; then
-			fetch "${PKG_URL}" ${PKG_SHA256SUM};
-		else
-			fetch_git ${PKG_SUBDIR} ${PKG_URL} ${PKG_GIT_BRANCH};
-		fi;
-	fi;
-	if test_cmd pkg_${PKG_NAME}_fetch_post; then
-		pkg_${PKG_NAME}_fetch_post;
-	fi;
-	set_build_script_done fetch -extract;
-fi;
-if test_cmd pkg_${PKG_NAME}_finish; then
-	pkg_${PKG_NAME}_finish; exit 0;
-elif [ "${PKG_URL_TYPE:-wget}" = wget ] &&\
-! is_build_script_done extract; then
-	secure_rm ${PKG_SUBDIR};
-	if [ ${PKG_SUBDIR_CREATE:-0} -eq 1 ]; then
-		insecure_mkdir ${PKG_SUBDIR};
-	fi;
-	if [ "${PKG_FNAME##*.tar.}" = "bz2" ]; then
-		bunzip2 -d < ${DLCACHEDIR}/${PKG_FNAME} | tar ${PKG_SUBDIR_CREATE:+-C ${PKG_SUBDIR}} -xf -;
-	elif [ "${PKG_FNAME##*.tar.}" = "gz" ]; then
-		gunzip -d < ${DLCACHEDIR}/${PKG_FNAME} | tar ${PKG_SUBDIR_CREATE:+-C ${PKG_SUBDIR}} -xf -;
-	elif [ "${PKG_FNAME##*.tar.}" = "xz" ]; then
-		xz -d < ${DLCACHEDIR}/${PKG_FNAME} | tar ${PKG_SUBDIR_CREATE:+-C ${PKG_SUBDIR}} -xf -;
-	elif [ "${PKG_FNAME##*.t}" = "bz2" ]; then
-		bunzip2 -d < ${DLCACHEDIR}/${PKG_FNAME} | tar ${PKG_SUBDIR_CREATE:+-C ${PKG_SUBDIR}} -xf -;
-	elif [ "${PKG_FNAME##*.t}" = "gz" ]; then
-		gunzip -d < ${DLCACHEDIR}/${PKG_FNAME} | tar ${PKG_SUBDIR_CREATE:+-C ${PKG_SUBDIR}} -xf -;
-	elif [ "${PKG_FNAME##*.t}" = "xz" ]; then
-		xz -d < ${DLCACHEDIR}/${PKG_FNAME} | tar ${PKG_SUBDIR_CREATE:+-C ${PKG_SUBDIR}} -xf -;
-	else
-		tar ${PKG_SUBDIR_CREATE:+-C ${PKG_SUBDIR}} -xf ${DLCACHEDIR}/${PKG_FNAME};
-	fi;
-	if test_cmd pkg_${PKG_NAME}_extract_post; then
-		pkg_${PKG_NAME}_extract_post;
-	fi;
-	set_build_script_done extract -build_dir;
-fi;
-if [ -z "${PKG_BUILD_DIR}" ]; then
-	set_build_dir ${PKG_SUBDIR} ${PKG_BUILD_TYPE:-native};
-fi;
-if ! is_build_script_done build_dir; then
-	[ "${PKG_SUBDIR}" != "${PKG_BUILD_DIR}" ] &&\
-		secure_rm ${PKG_BUILD_DIR};
-		insecure_mkdir ${PKG_BUILD_DIR};
-	set_build_script_done build_dir -patch_pre;
-fi;
-if ! is_build_script_done patch_pre; then
-	for __ in 											\
-			${MIDIPIX_BUILD_PWD}/../${PKG_SUBDIR}_pre.local.patch				\
-			${MIDIPIX_BUILD_PWD}/../${PKG_SUBDIR}_pre.local@${BUILD_HNAME}.patch		\
-			${WORKDIR}/chainport/${PKG_SUBDIR}_pre.midipix.patch				\
-			${MIDIPIX_BUILD_PWD}/patches/${PKG_SUBDIR}_pre.local.patch			\
-			${MIDIPIX_BUILD_PWD}/patches/${PKG_SUBDIR}_pre.local@${BUILD_HNAME}.patch; do
-		if [ -r "${__}" ]; then
-			patch -b -d ${PKG_SUBDIR} -p1 < ${__};
-		fi;
-	done; unset __;
-	if test_cmd pkg_${PKG_NAME}_patch_pre_post; then
-		pkg_${PKG_NAME}_patch_pre_post;
-	fi;
-	set_build_script_done patch_pre -autoconf;
-fi;
-if [ -e ${PKG_SUBDIR}/configure -o							\
-     -e ${PKG_SUBDIR}/configure.ac -o							\
-     -e ${PKG_SUBDIR}/configure.in -o							\
-     -e ${PKG_SUBDIR}/config.guess ]							\
-&& ! is_build_script_done autoconf; then
-	find ${PKG_SUBDIR} -name config.sub						\
-		-exec echo mv -- {} {}.orig \;						\
-		-exec mv -- {} {}.orig \;						\
-		-exec echo install -m 0700 ${MIDIPIX_BUILD_PWD}/etc/config.sub {} \;	\
-		-exec install -m 0700 ${MIDIPIX_BUILD_PWD}/etc/config.sub {} \;;
-	if [ -e ${PKG_SUBDIR}/configure.ac -a						\
-	   ! -e ${PKG_SUBDIR}/configure ]; then
-		if [ -e ${PKG_SUBDIR}/autogen.sh ]; then
-			for __ in ${PKG_SUBDIR}/build-aux ${PKG_SUBDIR}; do
-				if [ -e ${__} ]; then
-					echo install -m 0700				\
-						${MIDIPIX_BUILD_PWD}/etc/config.sub 	\
-						${__}/config.sub;
-					install -m 0700					\
-						${MIDIPIX_BUILD_PWD}/etc/config.sub	\
-						${__}/config.sub;
-					break;
-				fi;
-			done;
-			(cd ${PKG_SUBDIR} && ${SHELL} ./autogen.sh) || exit 1;
-		else
-			(cd ${PKG_SUBDIR} && autoconf) || exit 1;
-		fi;
-	fi;
-	for __ in ${PKG_BUILD_DIR} ${PKG_CONFIG_CACHE_EXTRA}; do
-		echo cp -- ${MIDIPIX_BUILD_PWD}/etc/config.cache ${__}/;
-		cp -- ${MIDIPIX_BUILD_PWD}/etc/config.cache ${__}/;
-	done;
-	set_build_script_done autoconf -patch;
-fi;
-if ! is_build_script_done patch; then
-	if [ -d ${MIDIPIX_BUILD_PWD}/patches/${PKG_NAME} ]; then
-		set +o noglob;
-		for __patch_fname in ${MIDIPIX_BUILD_PWD}/patches/${PKG_NAME}/*.patch; do
-			patch -b -d ${PKG_SUBDIR} -p1 < ${__patch_fname};
-		done;
-		set -o noglob;
-	fi;
-	for __patch_fname in 									\
-			${MIDIPIX_BUILD_PWD}/../${PKG_SUBDIR}.local.patch			\
-			${MIDIPIX_BUILD_PWD}/../${PKG_SUBDIR}.local@${BUILD_HNAME}.patch	\
-			${WORKDIR}/chainport/${PKG_SUBDIR}.midipix.patch			\
-			${MIDIPIX_BUILD_PWD}/patches/${PKG_SUBDIR}.local.patch			\
-			${MIDIPIX_BUILD_PWD}/patches/${PKG_SUBDIR}.local@${BUILD_HNAME}.patch; do
-		if [ -r "${__patch_fname}" ]; then
-			patch -b -d ${PKG_SUBDIR} -p1 < ${__patch_fname};
-		fi;
-	done; unset __patch_fname;
-	if test_cmd pkg_${PKG_NAME}_patch_post; then
-		pkg_${PKG_NAME}_patch_post;
-	fi;
-	set_build_script_done patch -configure;
-fi;
-PKG_SUBDIR_PATH=${PWD}/${PKG_SUBDIR#/};
-if [ -z "${PKG_CONFIGURE}" ]; then
-	PKG_CONFIGURE=${PKG_SUBDIR_PATH}/configure;
-else
-	PKG_CONFIGURE=${PWD}/${PKG_CONFIGURE#/};
-fi;
-cd ${PKG_BUILD_DIR};
-if [ "${PKG_BUILD_TYPE}" = "host" ]; then
-	export AR=ar;
-	export CC=gcc;
-	export CXX=g++;
-	export RANLIB=ranlib;
-else
-	export AR=${PKG_TARGET}-ar;
-	export CC=${PKG_TARGET}-gcc;
-	export CXX=${PKG_TARGET}-g++;
-	export RANLIB=${PKG_TARGET}-ranlib;
-fi;
-if [ -x ${PKG_CONFIGURE} ]; then
-	export CFLAGS_FOR_BUILD="${HOST_TOOLCHAIN_CFLAGS_CONFIGURE_DEFAULT}";
-fi;
-if [ -x ${PKG_CONFIGURE} ]\
-|| test_cmd pkg_${PKG_NAME}_configure\
-&& ! is_build_script_done configure; then
-	if test_cmd pkg_${PKG_NAME}_configure; then
-		pkg_${PKG_NAME}_configure;
-	else
-		if test_cmd pkg_${PKG_NAME}_configure_pre; then
-			pkg_${PKG_NAME}_configure_pre;
-		fi;
-		CFLAGS="${PKG_CFLAGS_CONFIGURE}${PKG_CFLAGS_CONFIGURE_EXTRA:+ ${PKG_CFLAGS_CONFIGURE_EXTRA}}"\
-		LDFLAGS="${PKG_LDFLAGS_CONFIGURE}${PKG_LDFLAGS_CONFIGURE_EXTRA:+ ${PKG_LDFLAGS_CONFIGURE_EXTRA}}"\
-		${PKG_CONFIGURE}								\
-			${PKG_CONFIGURE_ARGS} ${PKG_CONFIGURE_ARGS_EXTRA} ${PKG_CONFIGURE_ARGS_EXTRA_DEBUG};
-	fi;
-	set_build_script_done configure clean -build;
-else
-	__no_autoconf=1;
-	set_build_script_done clean -build;
-fi;
-if ! is_build_script_done clean; then
-	make clean;
-	set_build_script_done clean -build;
-fi;
-if ! is_build_script_done build; then
-	if test_cmd pkg_${PKG_NAME}_build; then
-		pkg_${PKG_NAME}_build;
-	elif [ -n "${PKG_BUILD_CMDLINE}" ]; then
-		${PKG_BUILD_CMDLINE};
-	elif [ ${PKG_NO_MAKE_BUILD:-0} -eq 0 ]; then
-		if [ "${PKG_SLIBTOOL}" != "default" ]; then
-			export MAKE="make LIBTOOL=${PKG_SLIBTOOL:-slibtool}";
-		fi;
-		# N.B.	We only specify CC= here if the current package does not use GNU
-		#	autoconf as it often abuses it by appending -std={gnu99,...} to it
-		#	instead of amending CFLAGS.
-		run_cmd_unsplit make							\
-			${PKG_MAKEFLAGS_BUILD}						\
-			${PKG_MAKEFLAGS_BUILD_EXTRA}					\
-			AR=${AR} ${__no_autoconf:+CC=${CC}} RANLIB=${RANLIB}		\
-			"${PKG_CFLAGS_BUILD:+CFLAGS=${PKG_CFLAGS_BUILD}}"		\
-			"${CFLAGS_FOR_BUILD:+CFLAGS_FOR_BUILD=${CFLAGS_FOR_BUILD}}"	\
-			"${PKG_CFLAGS_BUILD_EXTRA:+CFLAGS+=${PKG_CFLAGS_BUILD_EXTRA}}"	\
-			"${PKG_LDFLAGS_BUILD:+LDFLAGS=${PKG_LDFLAGS_BUILD}}"		\
-			"${PKG_LDFLAGS_BUILD_EXTRA:+LDFLAGS+=${PKG_LDFLAGS_BUILD_EXTRA}}";
-		unset __no_autoconf;
-	fi;
-	set_build_script_done build -install;
-fi;
-if ! is_build_script_done install; then
-	if test_cmd pkg_${PKG_NAME}_install; then
-		pkg_${PKG_NAME}_install;
-	else
-		if [ ${PKG_NO_MAKE_INSTALL:-0} -eq 0 ]; then
-			run_cmd_unsplit make					\
-				${PKG_MAKEFLAGS_INSTALL}			\
-				${PKG_MAKEFLAGS_INSTALL_EXTRA}			\
-				AR=${AR} CC=${CC} RANLIB=${RANLIB}		\
-				"${PKG_CFLAGS_INSTALL:+CFLAGS=${PKG_CFLAGS_INSTALL}}"				\
-				"${PKG_CFLAGS_INSTALL_EXTRA:+CFLAGS+=${PKG_CFLAGS_INSTALL_EXTRA}}"		\
-				"${PKG_LDFLAGS_INSTALL:+LDFLAGS=${PKG_LDFLAGS_INSTALL}}"			\
-				"${PKG_LDFLAGS_INSTALL_EXTRA:+LDFLAGS+=${PKG_LDFLAGS_INSTALL_EXTRA}}"		\
-				"${PKG_RANLIB_INSTALL:+RANLIB=${PKG_RANLIB_INSTALL}}"				\
-				${PKG_INSTALL_TARGET:=install};
-			if [ -n "${PKG_PREFIX_EXTRA}" ]; then
-				run_cmd_unsplit make				\
-					${PKG_MAKEFLAGS_INSTALL}		\
-					${PKG_MAKEFLAGS_INSTALL_EXTRA}		\
-					AR=${AR} CC=${CC} RANLIB=${RANLIB}	\
-					"${PKG_CFLAGS_INSTALL:+CFLAGS=${PKG_CFLAGS_INSTALL}}"			\
-					"${PKG_CFLAGS_INSTALL_EXTRA:+CFLAGS+=${PKG_CFLAGS_INSTALL_EXTRA}}"	\
-					"${PKG_LDFLAGS_INSTALL:+LDFLAGS=${PKG_LDFLAGS_INSTALL}}"		\
-					"${PKG_LDFLAGS_INSTALL_EXTRA:+LDFLAGS+=${PKG_LDFLAGS_INSTALL_EXTRA}}"	\
-					"${PKG_RANLIB_INSTALL:+RANLIB=${PKG_RANLIB_INSTALL}}"			\
-					${PKG_INSTALL_TARGET_EXTRA:=install}	\
-					DESTDIR=${PKG_PREFIX_EXTRA};
-			fi;
-		fi;
-		if test_cmd pkg_${PKG_NAME}_install_post; then
-			pkg_${PKG_NAME}_install_post;
-		fi;
-	fi;
-	if [ -d ${PKG_PREFIX}/lib ]; then
-		for __ in $(find ${PKG_PREFIX}/lib -type f -name \*.la); do
-			secure_rm ${__};
-		done;
-	fi;
-	if [ -n "${PKG_INSTALL_FILES}" ]; then
-		(set -- ${PKG_INSTALL_FILES};
-		while [ ${#} -gt 0 ]; do
-		case "${1}" in
-		@*=*)
-			__ln_target="${1%=*}";
-			__ln_target="${__ln_target#@}";
-			__ln_fname="${1#*=}";
-			echo ln -sf -- ${__ln_target} ${PKG_PREFIX}/${__ln_fname};
-			ln -sf -- ${__ln_target} ${PKG_PREFIX}/${__ln_fname};
-			;;
-		/=*)
-			__mkdir_fname="${1#/=}";
-			insecure_mkdir ${PKG_PREFIX}/${__mkdir_fname};
-			;;
-		*)
-			__file_fname_src="${1%=*}";
-			__file_fname_dst="${1#*=}";
-			echo cp -pP -- ${__file_fname_src} ${PKG_PREFIX}/${__file_fname_dst};
-			cp -pP -- ${__file_fname_src} ${PKG_PREFIX}/${__file_fname_dst};
-			;;
-		esac; shift;
-		done);
-	fi;
-	if [ "${PKG_BUILD_TYPE}" != "host" ]						\
-	&& test_cmd perk								\
-	&& test_cmd ${PKG_TARGET}-dlltool; then
-		for __so_fname in							\
-			$(find	\( -name "*.so"						\
-				-or -name "*.so.[0-9]"					\
-				-or -name "*.so.[0-9].[0-9]"				\
-				-or -name "*.so.[0-9].[0-9].[0-9]" \) -printf '%P\n');
-		do
-			if [ \( -e ${__so_fname%.so}.lib.a \) -o			\
-			     \( ! -e ${PKG_PREFIX}/lib/$(basename ${__so_fname}) \) ];
-			then
-				continue;
-			else
-				__so_name="${__so_fname%.so}";
-				echo perk -epdlltool ${__so_fname} \> ${__so_fname%.so}.def;
-				perk -epdlltool ${__so_fname} > ${__so_fname%.so}.def;
-				echo ${PKG_TARGET}-dlltool -l ${__so_fname%.so}.lib.a	\
-					-D ${__so_fname} -d ${__so_fname%.so}.def;
-				${PKG_TARGET}-dlltool -l ${__so_fname%.so}.lib.a	\
-					-D ${__so_fname} -d ${__so_fname%.so}.def;
-				echo cp -- ${__so_fname%.so}.lib.a "${PKG_PREFIX}/lib";
-				cp -- ${__so_fname%.so}.lib.a "${PKG_PREFIX}/lib";
-			fi;
-		done;
-	fi;
-	set_build_script_done install -finish;
-fi;
-set_build_script_done finish;
-
-# vim:filetype=sh
diff --git a/patches/gcc.stage1.mingw_w64.local.patch b/patches/gcc_native_x86_64_w64_mingw32.local.patch
index ac886cf2..ac886cf2 100644
--- a/patches/gcc.stage1.mingw_w64.local.patch
+++ b/patches/gcc_native_x86_64_w64_mingw32.local.patch
diff --git a/subr/build.subr b/subr/build.subr
index 1f67257c..3020a002 100644
--- a/subr/build.subr
+++ b/subr/build.subr
@@ -121,23 +121,6 @@ init_build_vars() {
 	BUILD_TIMES_SECS=$(command date +%s);
 };
 
-source_scripts() {
-	_ss_pkg_name="${BUILD_PACKAGE_LC%.*}";
-	_ss_arg1="${BUILD_PACKAGE_LC#*.}";
-	_ss_arg1="${_ss_arg1%%.*}";
-	_ss_arg2="${BUILD_PACKAGE_LC##*.}";
-	set -- ${_ss_pkg_name} ${_ss_arg1} ${_ss_arg2};
-	for SCRIPT_SOURCE in vars/${BUILD_PACKAGE_LC}.vars ${BUILD_SCRIPT_FNAME}; do
-		if [ -f ${MIDIPIX_BUILD_PWD}/${SCRIPT_SOURCE} ]; then
-			if [ ${ARG_DRYRUN:-0} -eq 1 ]; then
-				echo . ${MIDIPIX_BUILD_PWD}/${SCRIPT_SOURCE};
-			else
-				. ${MIDIPIX_BUILD_PWD}/${SCRIPT_SOURCE};
-			fi;
-		fi;
-	done;
-};
-
 source_vars() {
 	for __ in ${HOME}/midipix_build.vars ../midipix_build.vars ./vars/build.vars; do
 		[ -e ${__} ] && . ${__};
diff --git a/subr/pkg.subr b/subr/pkg.subr
index 315bbfdd..da36f35e 100644
--- a/subr/pkg.subr
+++ b/subr/pkg.subr
@@ -92,7 +92,8 @@ log_env_vars() {
 parse_with_pkg_name() {
 	PKG_NAME=${1}; shift;
 	_pwpn_pkg_name_uc=$(echo ${PKG_NAME} | tr a-z A-Z);
-	if [ -z "$(get_var_unsafe PKG_${_pwpn_pkg_name_uc}_URL)" ]; then
+	if [ -z "$(get_var_unsafe PKG_${_pwpn_pkg_name_uc}_URL)" ]\
+	&& [ -z "$(get_var_unsafe PKG_${_pwpn_pkg_name_uc}_VERSION)" ]; then
 		unset _pwpn_pkg_name_uc;
 		log_msg failexit "Error: package \`${PKG_NAME}' missing in build.vars.";
 	else
diff --git a/subr/pkg_all.subr b/subr/pkg_all.subr
new file mode 100644
index 00000000..df96e00f
--- /dev/null
+++ b/subr/pkg_all.subr
@@ -0,0 +1,10 @@
+#
+# . ./build.vars and set -o errexit -o noglob are assumed.
+# See warning at the top of build.vars.
+#
+
+pkg_all() {
+	:;
+};
+
+# vim:filetype=sh
diff --git a/subr/pkg_autoconf.subr b/subr/pkg_autoconf.subr
new file mode 100644
index 00000000..1896fc1c
--- /dev/null
+++ b/subr/pkg_autoconf.subr
@@ -0,0 +1,43 @@
+#
+# . ./build.vars and set -o errexit -o noglob are assumed.
+# See warning at the top of build.vars.
+#
+
+pkg_autoconf() {
+	if [ -e ${PKG_SUBDIR}/configure -o							\
+	     -e ${PKG_SUBDIR}/configure.ac -o							\
+	     -e ${PKG_SUBDIR}/configure.in -o							\
+	     -e ${PKG_SUBDIR}/config.guess ]; then
+		find ${PKG_SUBDIR} -name config.sub						\
+			-exec echo mv -- {} {}.orig \;						\
+			-exec mv -- {} {}.orig \;						\
+			-exec echo install -m 0700 ${MIDIPIX_BUILD_PWD}/etc/config.sub {} \;	\
+			-exec install -m 0700 ${MIDIPIX_BUILD_PWD}/etc/config.sub {} \;;
+		if [ -e ${PKG_SUBDIR}/configure.ac -a						\
+		   ! -e ${PKG_SUBDIR}/configure ]; then
+			if [ -e ${PKG_SUBDIR}/autogen.sh ]; then
+				for __ in ${PKG_SUBDIR}/build-aux ${PKG_SUBDIR}; do
+					if [ -e ${__} ]; then
+						echo install -m 0700				\
+							${MIDIPIX_BUILD_PWD}/etc/config.sub 	\
+							${__}/config.sub;
+						install -m 0700					\
+							${MIDIPIX_BUILD_PWD}/etc/config.sub	\
+							${__}/config.sub;
+						break;
+					fi;
+				done;
+				(cd ${PKG_SUBDIR} && ${SHELL} ./autogen.sh) || exit 1;
+			else
+				(cd ${PKG_SUBDIR} && autoconf) || exit 1;
+			fi;
+		fi;
+		for __ in ${PKG_BUILD_DIR} ${PKG_CONFIG_CACHE_EXTRA}; do
+			echo cp -- ${MIDIPIX_BUILD_PWD}/etc/config.cache ${__}/;
+			cp -- ${MIDIPIX_BUILD_PWD}/etc/config.cache ${__}/;
+		done;
+	fi;
+	set_build_script_done autoconf -patch;
+};
+
+# vim:filetype=sh
diff --git a/subr/pkg_build.subr b/subr/pkg_build.subr
new file mode 100644
index 00000000..d9b1e684
--- /dev/null
+++ b/subr/pkg_build.subr
@@ -0,0 +1,30 @@
+#
+# . ./build.vars and set -o errexit -o noglob are assumed.
+# See warning at the top of build.vars.
+#
+
+pkg_build() {
+	if [ -n "${PKG_BUILD_CMDLINE}" ]; then
+		${PKG_BUILD_CMDLINE};
+	elif [ ${PKG_NO_MAKE_BUILD:-0} -eq 0 ]; then
+		if [ "${PKG_SLIBTOOL}" != "default" ]; then
+			export MAKE="make LIBTOOL=${PKG_SLIBTOOL:-slibtool}";
+		fi;
+		# N.B.	We only specify CC= here if the current package does not use GNU
+		#	autoconf as it often abuses it by appending -std={gnu99,...} to it
+		#	instead of amending CFLAGS.
+		run_cmd_unsplit make							\
+			${PKG_MAKEFLAGS_BUILD}						\
+			${PKG_MAKEFLAGS_BUILD_EXTRA}					\
+			AR=${AR} ${__no_autoconf:+CC=${CC}} RANLIB=${RANLIB}		\
+			"${PKG_CFLAGS_BUILD:+CFLAGS=${PKG_CFLAGS_BUILD}}"		\
+			"${CFLAGS_FOR_BUILD:+CFLAGS_FOR_BUILD=${CFLAGS_FOR_BUILD}}"	\
+			"${PKG_CFLAGS_BUILD_EXTRA:+CFLAGS+=${PKG_CFLAGS_BUILD_EXTRA}}"	\
+			"${PKG_LDFLAGS_BUILD:+LDFLAGS=${PKG_LDFLAGS_BUILD}}"		\
+			"${PKG_LDFLAGS_BUILD_EXTRA:+LDFLAGS+=${PKG_LDFLAGS_BUILD_EXTRA}}";
+		unset __no_autoconf;
+	fi;
+	set_build_script_done build -install;
+};
+
+# vim:filetype=sh
diff --git a/subr/pkg_build_dir.subr b/subr/pkg_build_dir.subr
new file mode 100644
index 00000000..1e46323e
--- /dev/null
+++ b/subr/pkg_build_dir.subr
@@ -0,0 +1,16 @@
+#
+# . ./build.vars and set -o errexit -o noglob are assumed.
+# See warning at the top of build.vars.
+#
+
+pkg_build_dir() {
+	if [ -z "${PKG_BUILD_DIR}" ]; then
+		set_build_dir ${PKG_SUBDIR} ${PKG_BUILD_TYPE:-native};
+	fi;
+	[ "${PKG_SUBDIR}" != "${PKG_BUILD_DIR}" ] &&\
+		secure_rm ${PKG_BUILD_DIR};
+		insecure_mkdir ${PKG_BUILD_DIR};
+	set_build_script_done build_dir -patch_pre;
+};
+
+# vim:filetype=sh
diff --git a/subr/pkg_clean.subr b/subr/pkg_clean.subr
new file mode 100644
index 00000000..bd0e1d93
--- /dev/null
+++ b/subr/pkg_clean.subr
@@ -0,0 +1,11 @@
+#
+# . ./build.vars and set -o errexit -o noglob are assumed.
+# See warning at the top of build.vars.
+#
+
+pkg_clean() {
+	make clean;
+	set_build_script_done clean -build;
+};
+
+# vim:filetype=sh
diff --git a/subr/pkg_configure.subr b/subr/pkg_configure.subr
new file mode 100644
index 00000000..501ad710
--- /dev/null
+++ b/subr/pkg_configure.subr
@@ -0,0 +1,19 @@
+#
+# . ./build.vars and set -o errexit -o noglob are assumed.
+# See warning at the top of build.vars.
+#
+
+pkg_configure() {
+	if [ ${__no_autoconf:-0} -eq 0 ]; then
+		if test_cmd pkg_${PKG_NAME}_configure_pre; then
+			pkg_${PKG_NAME}_configure_pre;
+		fi;
+		CFLAGS="${PKG_CFLAGS_CONFIGURE}${PKG_CFLAGS_CONFIGURE_EXTRA:+ ${PKG_CFLAGS_CONFIGURE_EXTRA}}"\
+		LDFLAGS="${PKG_LDFLAGS_CONFIGURE}${PKG_LDFLAGS_CONFIGURE_EXTRA:+ ${PKG_LDFLAGS_CONFIGURE_EXTRA}}"\
+		${PKG_CONFIGURE}								\
+			${PKG_CONFIGURE_ARGS} ${PKG_CONFIGURE_ARGS_EXTRA} ${PKG_CONFIGURE_ARGS_EXTRA_DEBUG};
+	fi;
+	set_build_script_done configure clean -build;
+};
+
+# vim:filetype=sh
diff --git a/subr/pkg_disabled.subr b/subr/pkg_disabled.subr
new file mode 100644
index 00000000..9fb3f2f0
--- /dev/null
+++ b/subr/pkg_disabled.subr
@@ -0,0 +1,12 @@
+#
+# . ./build.vars and set -o errexit -o noglob are assumed.
+# See warning at the top of build.vars.
+#
+
+pkg_disabled() {
+	if [ ${PKG_DISABLED:-0} -eq 1 ]; then
+		exit 0;
+	fi;
+};
+
+# vim:filetype=sh
diff --git a/subr/pkg_extract.subr b/subr/pkg_extract.subr
new file mode 100644
index 00000000..1bee8835
--- /dev/null
+++ b/subr/pkg_extract.subr
@@ -0,0 +1,34 @@
+#
+# . ./build.vars and set -o errexit -o noglob are assumed.
+# See warning at the top of build.vars.
+#
+
+pkg_extract() {
+	if [ "${PKG_URL_TYPE:-wget}" = wget ]; then
+		secure_rm ${PKG_SUBDIR};
+		if [ ${PKG_SUBDIR_CREATE:-0} -eq 1 ]; then
+			insecure_mkdir ${PKG_SUBDIR};
+		fi;
+		if [ "${PKG_FNAME##*.tar.}" = "bz2" ]; then
+			bunzip2 -d < ${DLCACHEDIR}/${PKG_FNAME} | tar ${PKG_SUBDIR_CREATE:+-C ${PKG_SUBDIR}} -xf -;
+		elif [ "${PKG_FNAME##*.tar.}" = "gz" ]; then
+			gunzip -d < ${DLCACHEDIR}/${PKG_FNAME} | tar ${PKG_SUBDIR_CREATE:+-C ${PKG_SUBDIR}} -xf -;
+		elif [ "${PKG_FNAME##*.tar.}" = "xz" ]; then
+			xz -d < ${DLCACHEDIR}/${PKG_FNAME} | tar ${PKG_SUBDIR_CREATE:+-C ${PKG_SUBDIR}} -xf -;
+		elif [ "${PKG_FNAME##*.t}" = "bz2" ]; then
+			bunzip2 -d < ${DLCACHEDIR}/${PKG_FNAME} | tar ${PKG_SUBDIR_CREATE:+-C ${PKG_SUBDIR}} -xf -;
+		elif [ "${PKG_FNAME##*.t}" = "gz" ]; then
+			gunzip -d < ${DLCACHEDIR}/${PKG_FNAME} | tar ${PKG_SUBDIR_CREATE:+-C ${PKG_SUBDIR}} -xf -;
+		elif [ "${PKG_FNAME##*.t}" = "xz" ]; then
+			xz -d < ${DLCACHEDIR}/${PKG_FNAME} | tar ${PKG_SUBDIR_CREATE:+-C ${PKG_SUBDIR}} -xf -;
+		else
+			tar ${PKG_SUBDIR_CREATE:+-C ${PKG_SUBDIR}} -xf ${DLCACHEDIR}/${PKG_FNAME};
+		fi;
+		if test_cmd pkg_${PKG_NAME}_extract_post; then
+			pkg_${PKG_NAME}_extract_post;
+		fi;
+	fi;
+	set_build_script_done extract -build_dir;
+};
+
+# vim:filetype=sh
diff --git a/subr/pkg_fetch.subr b/subr/pkg_fetch.subr
new file mode 100644
index 00000000..705e4936
--- /dev/null
+++ b/subr/pkg_fetch.subr
@@ -0,0 +1,18 @@
+#
+# . ./build.vars and set -o errexit -o noglob are assumed.
+# See warning at the top of build.vars.
+#
+
+pkg_fetch() {
+	if [ "${PKG_URL_TYPE:-wget}" = wget ]; then
+		fetch "${PKG_URL}" ${PKG_SHA256SUM};
+	else
+		fetch_git ${PKG_SUBDIR} ${PKG_URL} ${PKG_GIT_BRANCH};
+	fi;
+	if test_cmd pkg_${PKG_NAME}_fetch_post; then
+		pkg_${PKG_NAME}_fetch_post;
+	fi;
+	set_build_script_done fetch -extract;
+};
+
+# vim:filetype=sh
diff --git a/subr/pkg_install.subr b/subr/pkg_install.subr
new file mode 100644
index 00000000..67df0fd6
--- /dev/null
+++ b/subr/pkg_install.subr
@@ -0,0 +1,97 @@
+#
+# . ./build.vars and set -o errexit -o noglob are assumed.
+# See warning at the top of build.vars.
+#
+
+pkg_install() {
+	if test_cmd pkg_${PKG_NAME}_install; then
+		pkg_${PKG_NAME}_install;
+	else
+		if [ ${PKG_NO_MAKE_INSTALL:-0} -eq 0 ]; then
+			run_cmd_unsplit make					\
+				${PKG_MAKEFLAGS_INSTALL}			\
+				${PKG_MAKEFLAGS_INSTALL_EXTRA}			\
+				AR=${AR} CC=${CC} RANLIB=${RANLIB}		\
+				"${PKG_CFLAGS_INSTALL:+CFLAGS=${PKG_CFLAGS_INSTALL}}"				\
+				"${PKG_CFLAGS_INSTALL_EXTRA:+CFLAGS+=${PKG_CFLAGS_INSTALL_EXTRA}}"		\
+				"${PKG_LDFLAGS_INSTALL:+LDFLAGS=${PKG_LDFLAGS_INSTALL}}"			\
+				"${PKG_LDFLAGS_INSTALL_EXTRA:+LDFLAGS+=${PKG_LDFLAGS_INSTALL_EXTRA}}"		\
+				"${PKG_RANLIB_INSTALL:+RANLIB=${PKG_RANLIB_INSTALL}}"				\
+				${PKG_INSTALL_TARGET:=install};
+			if [ -n "${PKG_PREFIX_EXTRA}" ]; then
+				run_cmd_unsplit make				\
+					${PKG_MAKEFLAGS_INSTALL}		\
+					${PKG_MAKEFLAGS_INSTALL_EXTRA}		\
+					AR=${AR} CC=${CC} RANLIB=${RANLIB}	\
+					"${PKG_CFLAGS_INSTALL:+CFLAGS=${PKG_CFLAGS_INSTALL}}"			\
+					"${PKG_CFLAGS_INSTALL_EXTRA:+CFLAGS+=${PKG_CFLAGS_INSTALL_EXTRA}}"	\
+					"${PKG_LDFLAGS_INSTALL:+LDFLAGS=${PKG_LDFLAGS_INSTALL}}"		\
+					"${PKG_LDFLAGS_INSTALL_EXTRA:+LDFLAGS+=${PKG_LDFLAGS_INSTALL_EXTRA}}"	\
+					"${PKG_RANLIB_INSTALL:+RANLIB=${PKG_RANLIB_INSTALL}}"			\
+					${PKG_INSTALL_TARGET_EXTRA:=install}	\
+					DESTDIR=${PKG_PREFIX_EXTRA};
+			fi;
+		fi;
+		if test_cmd pkg_${PKG_NAME}_install_post; then
+			pkg_${PKG_NAME}_install_post;
+		fi;
+	fi;
+	if [ -d ${PKG_PREFIX}/lib ]; then
+		for __ in $(find ${PKG_PREFIX}/lib -type f -name \*.la); do
+			secure_rm ${__};
+		done;
+	fi;
+	if [ -n "${PKG_INSTALL_FILES}" ]; then
+		(set -- ${PKG_INSTALL_FILES};
+		while [ ${#} -gt 0 ]; do
+		case "${1}" in
+		@*=*)
+			__ln_target="${1%=*}";
+			__ln_target="${__ln_target#@}";
+			__ln_fname="${1#*=}";
+			echo ln -sf -- ${__ln_target} ${PKG_PREFIX}/${__ln_fname};
+			ln -sf -- ${__ln_target} ${PKG_PREFIX}/${__ln_fname};
+			;;
+		/=*)
+			__mkdir_fname="${1#/=}";
+			insecure_mkdir ${PKG_PREFIX}/${__mkdir_fname};
+			;;
+		*)
+			__file_fname_src="${1%=*}";
+			__file_fname_dst="${1#*=}";
+			echo cp -pP -- ${__file_fname_src} ${PKG_PREFIX}/${__file_fname_dst};
+			cp -pP -- ${__file_fname_src} ${PKG_PREFIX}/${__file_fname_dst};
+			;;
+		esac; shift;
+		done);
+	fi;
+	if [ "${PKG_BUILD_TYPE}" != "host" ]						\
+	&& test_cmd perk								\
+	&& test_cmd ${PKG_TARGET}-dlltool; then
+		for __so_fname in							\
+			$(find	\( -name "*.so"						\
+				-or -name "*.so.[0-9]"					\
+				-or -name "*.so.[0-9].[0-9]"				\
+				-or -name "*.so.[0-9].[0-9].[0-9]" \) -printf '%P\n');
+		do
+			if [ \( -e ${__so_fname%.so}.lib.a \) -o			\
+			     \( ! -e ${PKG_PREFIX}/lib/$(basename ${__so_fname}) \) ];
+			then
+				continue;
+			else
+				__so_name="${__so_fname%.so}";
+				echo perk -epdlltool ${__so_fname} \> ${__so_fname%.so}.def;
+				perk -epdlltool ${__so_fname} > ${__so_fname%.so}.def;
+				echo ${PKG_TARGET}-dlltool -l ${__so_fname%.so}.lib.a	\
+					-D ${__so_fname} -d ${__so_fname%.so}.def;
+				${PKG_TARGET}-dlltool -l ${__so_fname%.so}.lib.a	\
+					-D ${__so_fname} -d ${__so_fname%.so}.def;
+				echo cp -- ${__so_fname%.so}.lib.a "${PKG_PREFIX}/lib";
+				cp -- ${__so_fname%.so}.lib.a "${PKG_PREFIX}/lib";
+			fi;
+		done;
+	fi;
+	set_build_script_done install -finish;
+};
+
+# vim:filetype=sh
diff --git a/subr/pkg_patch.subr b/subr/pkg_patch.subr
new file mode 100644
index 00000000..089c0c16
--- /dev/null
+++ b/subr/pkg_patch.subr
@@ -0,0 +1,30 @@
+#
+# . ./build.vars and set -o errexit -o noglob are assumed.
+# See warning at the top of build.vars.
+#
+
+pkg_patch() {
+	if [ -d ${MIDIPIX_BUILD_PWD}/patches/${PKG_NAME} ]; then
+		set +o noglob;
+		for __patch_fname in ${MIDIPIX_BUILD_PWD}/patches/${PKG_NAME}/*.patch; do
+			patch -b -d ${PKG_SUBDIR} -p1 < ${__patch_fname};
+		done;
+		set -o noglob;
+	fi;
+	for __patch_fname in 									\
+			${MIDIPIX_BUILD_PWD}/../${PKG_SUBDIR}.local.patch			\
+			${MIDIPIX_BUILD_PWD}/../${PKG_SUBDIR}.local@${BUILD_HNAME}.patch	\
+			${WORKDIR}/chainport/${PKG_SUBDIR}.midipix.patch			\
+			${MIDIPIX_BUILD_PWD}/patches/${PKG_SUBDIR}.local.patch			\
+			${MIDIPIX_BUILD_PWD}/patches/${PKG_SUBDIR}.local@${BUILD_HNAME}.patch; do
+		if [ -r "${__patch_fname}" ]; then
+			patch -b -d ${PKG_SUBDIR} -p1 < ${__patch_fname};
+		fi;
+	done; unset __patch_fname;
+	if test_cmd pkg_${PKG_NAME}_patch_post; then
+		pkg_${PKG_NAME}_patch_post;
+	fi;
+	set_build_script_done patch -setup;
+};
+
+# vim:filetype=sh
diff --git a/subr/pkg_patch_pre.subr b/subr/pkg_patch_pre.subr
new file mode 100644
index 00000000..2671d32c
--- /dev/null
+++ b/subr/pkg_patch_pre.subr
@@ -0,0 +1,23 @@
+#
+# . ./build.vars and set -o errexit -o noglob are assumed.
+# See warning at the top of build.vars.
+#
+
+pkg_patch_pre() {
+	for __ in 											\
+			${MIDIPIX_BUILD_PWD}/../${PKG_SUBDIR}_pre.local.patch				\
+			${MIDIPIX_BUILD_PWD}/../${PKG_SUBDIR}_pre.local@${BUILD_HNAME}.patch		\
+			${WORKDIR}/chainport/${PKG_SUBDIR}_pre.midipix.patch				\
+			${MIDIPIX_BUILD_PWD}/patches/${PKG_SUBDIR}_pre.local.patch			\
+			${MIDIPIX_BUILD_PWD}/patches/${PKG_SUBDIR}_pre.local@${BUILD_HNAME}.patch; do
+		if [ -r "${__}" ]; then
+			patch -b -d ${PKG_SUBDIR} -p1 < ${__};
+		fi;
+	done; unset __;
+	if test_cmd pkg_${PKG_NAME}_patch_pre_post; then
+		pkg_${PKG_NAME}_patch_pre_post;
+	fi;
+	set_build_script_done patch_pre -autoconf;
+};
+
+# vim:filetype=sh
diff --git a/subr/pkg_setup.subr b/subr/pkg_setup.subr
new file mode 100644
index 00000000..242541ad
--- /dev/null
+++ b/subr/pkg_setup.subr
@@ -0,0 +1,33 @@
+#
+# . ./build.vars and set -o errexit -o noglob are assumed.
+# See warning at the top of build.vars.
+#
+
+pkg_setup() {
+	PKG_SUBDIR_PATH=${PWD}/${PKG_SUBDIR#/};
+	if [ -z "${PKG_CONFIGURE}" ]; then
+		PKG_CONFIGURE=${PKG_SUBDIR_PATH}/configure;
+	else
+		PKG_CONFIGURE=${PWD}/${PKG_CONFIGURE#/};
+	fi;
+	cd ${PKG_BUILD_DIR};
+	if [ "${PKG_BUILD_TYPE}" = "host" ]; then
+		export AR=ar;
+		export CC=gcc;
+		export CXX=g++;
+		export RANLIB=ranlib;
+	else
+		export AR=${PKG_TARGET}-ar;
+		export CC=${PKG_TARGET}-gcc;
+		export CXX=${PKG_TARGET}-g++;
+		export RANLIB=${PKG_TARGET}-ranlib;
+	fi;
+	if [ -x ${PKG_CONFIGURE} ]; then
+		export CFLAGS_FOR_BUILD="${HOST_TOOLCHAIN_CFLAGS_CONFIGURE_DEFAULT}";
+	else
+		__no_autoconf=1;
+	fi;
+	set_build_script_done setup -configure;
+};
+
+# vim:filetype=sh
diff --git a/vars/build.vars b/vars/build.vars
index 13606a86..f7f84a0b 100644
--- a/vars/build.vars
+++ b/vars/build.vars
@@ -87,7 +87,7 @@ INVARIANTS_PACKAGES="chainport";
 HOST_TOOLCHAIN_BUILD_TYPE="host";
 HOST_TOOLCHAIN_CFLAGS_CONFIGURE="${HOST_TOOLCHAIN_CFLAGS_CONFIGURE_DEFAULT}";
 HOST_TOOLCHAIN_CONFIGURE_ARGS="-C --disable-nls --host=${TARGET} --prefix= --target=${TARGET}";
-HOST_TOOLCHAIN_PACKAGES="slibtool_host perk_host binutils_host gcc.stage1 psxstub musl.no-complex gcc.runtime musl.full gcc.libstdc++-v3 gcc.full pkgconf_host file_host binutils_host_mingw_w64 gcc.host.mingw_w64 mdso_host";
+HOST_TOOLCHAIN_PACKAGES="slibtool_host perk_host binutils_host binutils_host_x86_64_w64_mingw32 gcc_stage1_x86_64_w64_mingw32 gcc_stage1 psxstub musl_no_complex gcc_runtime musl_full gcc_libstdcpp_v3 gcc_full file_host mdso_host pkgconf_host";
 HOST_TOOLCHAIN_PREFIX="${PREFIX_CROSS}";
 : ${PKG_SLIBTOOL_HOST_URL:=${GITROOT}/slibtool};
 : ${PKG_SLIBTOOL_HOST_URL_TYPE:=git};
@@ -104,29 +104,37 @@ HOST_TOOLCHAIN_PREFIX="${PREFIX_CROSS}";
 : ${PKG_BINUTILS_HOST_URL:=ftp://sourceware.org/pub/binutils/snapshots/binutils-${PKG_BINUTILS_HOST_VERSION}.tar.bz2};
 : ${PKG_BINUTILS_HOST_CONFIGURE_ARGS:=--disable-werror --prefix=${PREFIX} --target=${TARGET} --with-sysroot=${PREFIX_CROSS}};
 : ${PKG_BINUTILS_HOST_SLIBTOOL:=slibtool-static};
-: ${PKG_BINUTILS_HOST_MINGW_W64_SHA256SUM:=250d3b2925c6b211fb16173b0b25bc091c58829fbcad3eb849645e0af52cf7fa};
-: ${PKG_BINUTILS_HOST_MINGW_W64_VERSION:=2.24.51};
-: ${PKG_BINUTILS_HOST_MINGW_W64_URL:=ftp://sourceware.org/pub/binutils/snapshots/binutils-${PKG_BINUTILS_HOST_MINGW_W64_VERSION}.tar.bz2};
-: ${PKG_BINUTILS_HOST_MINGW_W64_CONFIGURE_ARGS:=--disable-werror --prefix=${PREFIX} --target=x86_64-w64-mingw32 --with-sysroot=${PREFIX_CROSS}};
-: ${PKG_BINUTILS_HOST_MINGW_W64_SLIBTOOL:=slibtool-static};
-: ${PKG_BINUTILS_HOST_MINGW_W64_TARGET:=x86_64-w64-mingw32};
+: ${PKG_BINUTILS_HOST_X86_64_W64_MINGW32_SHA256SUM:=250d3b2925c6b211fb16173b0b25bc091c58829fbcad3eb849645e0af52cf7fa};
+: ${PKG_BINUTILS_HOST_X86_64_W64_MINGW32_VERSION:=2.24.51};
+: ${PKG_BINUTILS_HOST_X86_64_W64_MINGW32_URL:=ftp://sourceware.org/pub/binutils/snapshots/binutils-${PKG_BINUTILS_HOST_X86_64_W64_MINGW32_VERSION}.tar.bz2};
+: ${PKG_BINUTILS_HOST_X86_64_W64_MINGW32_CONFIGURE_ARGS:=--disable-werror --prefix=${PREFIX} --target=x86_64-w64-mingw32 --with-sysroot=${PREFIX_CROSS}};
+: ${PKG_BINUTILS_HOST_X86_64_W64_MINGW32_SLIBTOOL:=slibtool-static};
+: ${PKG_BINUTILS_HOST_X86_64_W64_MINGW32_TARGET:=x86_64-w64-mingw32};
+: ${PKG_GCC_STAGE1_VERSION:=4.6.4};
+: ${PKG_PSXSTUB_URL:=${GITROOT}/psxstub};
+: ${PKG_PSXSTUB_URL_TYPE:=git};
+: ${PKG_PSXSTUB_URL:=${GITROOT}/psxstub};
+: ${PKG_MUSL_NO_COMPLEX_VERSION:=1.1.12};
+: ${PKG_GCC_RUNTIME_VERSION:=4.6.4};
+: ${PKG_MUSL_FULL_VERSION:=1.1.12};
+: ${PKG_GCC_LIBSTDCPP_V3_VERSION:=4.6.4};
+: ${PKG_GCC_FULL_VERSION:=4.6.4};
+: ${PKG_GCC_STAGE1_X86_64_W64_MINGW32_VERSION:=4.6.4};
+: ${PKG_FILE_HOST_SHA256SUM:=ea661277cd39bf8f063d3a83ee875432cc3680494169f952787e002bdd3884c0};
+: ${PKG_FILE_HOST_VERSION:=5.29};
+: ${PKG_FILE_HOST_URL:=ftp://ftp.astron.com/pub/file/file-${PKG_FILE_HOST_VERSION}.tar.gz};
+: ${PKG_FILE_HOST_CONFIGURE_ARGS:="-C --prefix=${PREFIX}"};
 : ${PKG_MDSO_HOST_URL:=${GITROOT}/mdso};
 : ${PKG_MDSO_HOST_URL_TYPE:=git};
 : ${PKG_MDSO_HOST_CONFIGURE_ARGS:="--prefix=/usr"};
 : ${PKG_MDSO_HOST_INSTALL_FILES:="@mdso=bin/${TARGET}-mdso"};
 : ${PKG_MDSO_HOST_MAKEFLAGS_INSTALL:="DESTDIR=${PREFIX}"};
 : ${PKG_MDSO_HOST_PREFIX:=${PREFIX}};
-: ${PKG_PSXSTUB_URL:=${GITROOT}/psxstub};
-: ${PKG_PSXSTUB_URL_TYPE:=git};
 : ${PKG_PKGCONF_HOST_SHA256SUM:=7ec8b516e655e247f4ba976837cee808134785819ab8f538f652fe919cc6c09f};
 : ${PKG_PKGCONF_HOST_VERSION:=0.9.12};
 : ${PKG_PKGCONF_HOST_URL:=https://github.com/pkgconf/pkgconf/releases/download/pkgconf-${PKG_PKGCONF_HOST_VERSION}/pkgconf-${PKG_PKGCONF_HOST_VERSION}.tar.bz2};
 : ${PKG_PKGCONF_HOST_CONFIGURE_ARGS:="-C --prefix=${PREFIX_NATIVE}"};
 : ${PKG_PKGCONF_HOST_MAKEFLAGS_INSTALL_EXTRA:=prefix=${PREFIX}};
-: ${PKG_FILE_HOST_SHA256SUM:=ea661277cd39bf8f063d3a83ee875432cc3680494169f952787e002bdd3884c0};
-: ${PKG_FILE_HOST_VERSION:=5.29};
-: ${PKG_FILE_HOST_URL:=ftp://ftp.astron.com/pub/file/file-${PKG_FILE_HOST_VERSION}.tar.gz};
-: ${PKG_FILE_HOST_CONFIGURE_ARGS:="-C --prefix=${PREFIX}"};
 
 #
 # Build target native_toolchain
@@ -134,7 +142,7 @@ HOST_TOOLCHAIN_PREFIX="${PREFIX_CROSS}";
 NATIVE_TOOLCHAIN_CFLAGS_CONFIGURE="${NATIVE_TOOLCHAIN_CFLAGS_CONFIGURE_DEFAULT}";
 NATIVE_TOOLCHAIN_CONFIGURE_ARGS="--disable-nls --host=${TARGET} --prefix=/ --target=${TARGET}";
 NATIVE_TOOLCHAIN_MAKEFLAGS_INSTALL="DESTDIR=${PREFIX_NATIVE}";
-NATIVE_TOOLCHAIN_PACKAGES="slibtool perk pkgconf gmp mpfr mpc libelf binutils binutils_native_mingw_w64 musl.native gcc.native mdso gcc.stage1.mingw_w64";
+NATIVE_TOOLCHAIN_PACKAGES="slibtool perk pkgconf gmp mpfr mpc libelf binutils binutils_x86_64_w64_mingw32 musl_native gcc_native mdso";
 NATIVE_TOOLCHAIN_PREFIX="${PREFIX_NATIVE}";
 : ${PKG_SLIBTOOL_URL:=git://midipix.org/slibtool};
 : ${PKG_SLIBTOOL_URL_TYPE:=git};
@@ -172,15 +180,15 @@ NATIVE_TOOLCHAIN_PREFIX="${PREFIX_NATIVE}";
 : ${PKG_BINUTILS_URL:=ftp://sourceware.org/pub/binutils/snapshots/binutils-${PKG_BINUTILS_VERSION}.tar.bz2};
 : ${PKG_BINUTILS_CONFIGURE_ARGS_EXTRA:=--with-libelf=${PREFIX_NATIVE} --with-gmp=${PREFIX_NATIVE} --with-mpc=${PREFIX_NATIVE} --with-mpfr=${PREFIX_NATIVE} --with-sysroot=/};
 : ${PKG_BINUTILS_SLIBTOOL:=slibtool-static};
-: ${PKG_BINUTILS_NATIVE_MINGW_W64_SHA256SUM:=250d3b2925c6b211fb16173b0b25bc091c58829fbcad3eb849645e0af52cf7fa};
-: ${PKG_BINUTILS_NATIVE_MINGW_W64_VERSION:=2.24.51};
-: ${PKG_BINUTILS_NATIVE_MINGW_W64_URL:=ftp://sourceware.org/pub/binutils/snapshots/binutils-${PKG_BINUTILS_NATIVE_MINGW_W64_VERSION}.tar.bz2};
-: ${PKG_BINUTILS_NATIVE_MINGW_W64_CONFIGURE_ARGS:="--disable-nls --host=${TARGET} --prefix=/ --target=x86_64-w64-mingw32 --with-libelf=${PREFIX_NATIVE} --with-gmp=${PREFIX_NATIVE} --with-mpc=${PREFIX_NATIVE} --with-mpfr=${PREFIX_NATIVE} --with-sysroot=/"};
-: ${PKG_BINUTILS_NATIVE_MINGW_W64_SLIBTOOL:=slibtool-static};
-: ${PKG_MUSL_SHA256SUM:=720b83c7e276b4b679c0bffe9509340d5f81fd601508e607e708177df0d31c0e};
-: ${PKG_MUSL_VERSION:=1.1.12};
-: ${PKG_MUSL_URL:=http://www.musl-libc.org/releases/musl-${PKG_MUSL_VERSION}.tar.gz};
-: ${PKG_GCC_VERSION:=4.6.4};
+: ${PKG_BINUTILS_X86_64_W64_MINGW32_SHA256SUM:=250d3b2925c6b211fb16173b0b25bc091c58829fbcad3eb849645e0af52cf7fa};
+: ${PKG_BINUTILS_X86_64_W64_MINGW32_VERSION:=2.24.51};
+: ${PKG_BINUTILS_X86_64_W64_MINGW32_URL:=ftp://sourceware.org/pub/binutils/snapshots/binutils-${PKG_BINUTILS_X86_64_W64_MINGW32_VERSION}.tar.bz2};
+: ${PKG_BINUTILS_X86_64_W64_MINGW32_CONFIGURE_ARGS:="--disable-nls --host=${TARGET} --prefix=/ --target=x86_64-w64-mingw32 --with-libelf=${PREFIX_NATIVE} --with-gmp=${PREFIX_NATIVE} --with-mpc=${PREFIX_NATIVE} --with-mpfr=${PREFIX_NATIVE} --with-sysroot=/"};
+: ${PKG_BINUTILS_X86_64_W64_MINGW32_SLIBTOOL:=slibtool-static};
+: ${PKG_MUSL_NATIVE_SHA256SUM:=720b83c7e276b4b679c0bffe9509340d5f81fd601508e607e708177df0d31c0e};
+: ${PKG_MUSL_NATIVE_VERSION:=1.1.12};
+: ${PKG_MUSL_NATIVE_URL:=http://www.musl-libc.org/releases/musl-${PKG_MUSL_NATIVE_VERSION}.tar.gz};
+: ${PKG_GCC_NATIVE_VERSION:=4.6.4};
 : ${PKG_MDSO_URL:=${GITROOT}/mdso};
 : ${PKG_MDSO_URL_TYPE:=git};
 : ${PKG_MDSO_CONFIGURE_ARGS:="--prefix=/usr --target=${TARGET}"};
diff --git a/vars/gcc.vars b/vars/gcc.vars
new file mode 100644
index 00000000..b62ccebd
--- /dev/null
+++ b/vars/gcc.vars
@@ -0,0 +1,413 @@
+#
+# . ./build.vars and set -o errexit -o noglob are assumed.
+# Order: stage1, runtime, libstdcpp_v3, full, native
+# Order: stage1_x86_64_w64_mingw32, native_x86_64_w64_mingw32
+#
+
+pkg_gcc_stage1_all() {
+	PKG_GCC_VERSION="${PKG_GCC_STAGE1_VERSION}";
+	export MAKE="make LIBTOOL=slibtool";
+	# GCC, stage1.
+	if ! is_build_script_done fetch; then
+		fetch_git cbb-gcc-${PKG_GCC_VERSION}		\
+			${GITROOT}/cbb/cbb-gcc-${PKG_GCC_VERSION};
+		set_build_script_done fetch -configure;
+	fi;
+	set_build_dir cbb-gcc-${PKG_GCC_VERSION} cross;
+	export	cbb_ldflags_for_target=--sysroot=${PKG_PREFIX}	\
+		cbb_sysroot_for_libgcc=${PKG_PREFIX}		\
+		cbb_target=${PKG_TARGET}			\
+		cbb_neutral_libiberty=no			\
+		cbb_xgcc_for_specs=${WORKDIR}/${PKG_BUILD_DIR}/gcc/xgcc;
+	GCCTARGET_FLAGS="-DIN_TARGET_LIBRARY_BUILD --sysroot=${PKG_PREFIX}";
+	GCCFLAGS="${CFLAGS:+${CFLAGS} }--include $(readlink -f ${WORKDIR}/cbb-gcc-${PKG_GCC_VERSION}/libc/cbb-musl-pe.h)";
+	for __ in CFLAGS CFLAGS_FOR_BUILD CPPFLAGS_FOR_BUILD CXXFLAGS CXXFLAGS_FOR_BUILD; do
+		export "${__}=${GCCFLAGS}";
+	done;
+	for __ in CFLAGS_FOR_TARGET CPPFLAGS_FOR_TARGET CXXFLAGS_FOR_TARGET LIBCFLAGS_FOR_TARGET XGCC_FLAGS_FOR_TARGET; do
+		export "${__}=${GCCTARGET_FLAGS}";
+	done;
+	for __ in cbb_cflags_for_stage1 cbb_cflags_for_stage2 cbb_cflags_for_stage3 cbb_cflags_for_stage4; do
+		export "${__}=${CFLAGS_FOR_BUILD}" ;
+	done;
+	export CFLAGS CXXFLAGS CFLAGS_FOR_BUILD CPPFLAGS_FOR_BUILD CXXFLAGS_FOR_BUILD CFLAGS_FOR_TARGET XGCC_FLAGS_FOR_TARGET CPPFLAGS_FOR_TARGET CXXFLAGS_FOR_TARGET LIBCFLAGS_FOR_TARGET;
+	if ! is_build_script_done configure; then
+		insecure_mkdir ${PKG_PREFIX}/include;
+		[ \! -d ${PKG_PREFIX}/usr ] &&			\
+			ln -s -- . ${PKG_PREFIX}/usr;
+		_configure_args="				\
+			--disable-sjlj-exceptions		\
+			--prefix=${PREFIX}			\
+			--with-sysroot=${PREFIX}/${PKG_TARGET}";
+		secure_rm ${PKG_BUILD_DIR};
+		insecure_mkdir ${PKG_BUILD_DIR};
+		secure_cd ${PKG_BUILD_DIR};
+		../cbb-gcc-${PKG_GCC_VERSION}/configure		\
+			--disable-bootstrap			\
+			--disable-libmudflap			\
+			--disable-multilib			\
+			--disable-nls				\
+			--disable-obsolete			\
+			--disable-symvers			\
+			--enable-canonical-system-headers	\
+			--enable-__cxa_atexit			\
+			--enable-debug				\
+			--enable-gnu-indirect-function		\
+			--enable-gnu-unique-object		\
+			--enable-initfini-array			\
+			--enable-languages=c,c++,objc,lto	\
+			--enable-libstdcxx-debug		\
+			--enable-lto				\
+			--enable-multiarch			\
+			--enable-secureplt			\
+			--enable-shared				\
+			--enable-threads=posix			\
+			--target=${PKG_TARGET}			\
+			--with-fpmath=sse			\
+			${_configure_args};
+		set_build_script_done configure clean -build;
+	else
+		cd ${PKG_BUILD_DIR};
+	fi;
+	if ! is_build_script_done clean; then
+		make ${MAKEFLAGS} clean;
+		set_build_script_done clean -build;
+	fi;
+	if ! is_build_script_done build; then
+		make ${MAKEFLAGS} all-gcc;
+		set_build_script_done build -install;
+	fi;
+	if ! is_build_script_done install; then
+		make ${MAKEFLAGS} install-gcc;
+		__="$(uname -s)";
+		if [ "${__#*CYGWIN*}" != "${__}" ]; then
+			ln -s -- ${PREFIX}/libexec/gcc/${PKG_TARGET}/${PKG_GCC_VERSION}/liblto_plugin.dll.a	\
+				ln -s -- ${PREFIX}/libexec/gcc/${PKG_TARGET}/${PKG_GCC_VERSION}/liblto_plugin.so;
+		fi;
+		set_build_script_done install finish;
+	fi;
+};
+
+pkg_gcc_runtime_all() {
+	PKG_GCC_VERSION="${PKG_GCC_RUNTIME_VERSION}";
+	export MAKE="make LIBTOOL=slibtool";
+	set_build_dir cbb-gcc-${PKG_GCC_VERSION} cross;
+	cd ${PKG_BUILD_DIR};
+	# GCC, compiler runtime.
+	if ! is_build_script_done build; then
+		make ${MAKEFLAGS} all-target-libgcc;
+		set_build_script_done build -install;
+	fi;
+	if ! is_build_script_done install; then
+		make ${MAKEFLAGS} install-target-libgcc;
+		set_build_script_done install finish;
+	fi;
+};
+
+pkg_gcc_libstdcpp_v3_all() {
+	PKG_GCC_VERSION="${PKG_GCC_LIBSTDCPP_V3_VERSION}";
+	export MAKE="make LIBTOOL=slibtool";
+	set_build_dir cbb-gcc-${PKG_GCC_VERSION} cross;
+	cd ${PKG_BUILD_DIR};
+	# GCC, libstdc++-v3.
+	if ! is_build_script_done build; then
+		make ${MAKEFLAGS} all-target-libstdc++-v3;
+		set_build_script_done build -install;
+	fi;
+	if ! is_build_script_done install; then
+		make ${MAKEFLAGS} install-target-libstdc++-v3;
+		set_build_script_done install finish;
+	fi;
+};
+
+pkg_gcc_full_all() {
+	PKG_GCC_VERSION="${PKG_GCC_FULL_VERSION}";
+	export MAKE="make LIBTOOL=slibtool";
+	set_build_dir cbb-gcc-${PKG_GCC_VERSION} cross;
+	cd ${PKG_BUILD_DIR};
+	# GCC, everything else.
+	if ! is_build_script_done build; then
+		make ${MAKEFLAGS};
+		set_build_script_done build -install;
+	fi;
+	if ! is_build_script_done install; then
+		make ${MAKEFLAGS} install;
+		set_build_script_done install finish;
+	fi;
+};
+
+pkg_gcc_native_all() {
+	PKG_GCC_VERSION="${PKG_GCC_NATIVE_VERSION}";
+	export MAKE="make LIBTOOL=slibtool";
+	# GCC, native.
+	set_build_dir cbb-gcc-${PKG_GCC_VERSION} native;
+	export 	cbb_ldflags_for_target=--sysroot=${PKG_PREFIX}	\
+		cbb_sysroot_for_libgcc=${PKG_PREFIX}		\
+		cbb_target=${PKG_TARGET}			\
+		cbb_xgcc_for_specs=${PKG_TARGET}-gcc		\
+		sysroot_headers_suffix=${PKG_PREFIX};
+	GCCTARGET_FLAGS="-DIN_TARGET_LIBRARY_BUILD --sysroot=${PKG_PREFIX}";
+	GCCFLAGS="${CFLAGS:+${CFLAGS} }--include $(readlink -f ${WORKDIR}/cbb-gcc-${PKG_GCC_VERSION}/libc/cbb-musl-pe.h)";
+	for __ in CFLAGS CFLAGS_FOR_BUILD CPPFLAGS_FOR_BUILD CXXFLAGS CXXFLAGS_FOR_BUILD; do
+		export "${__}=${GCCFLAGS}";
+	done;
+	for __ in CFLAGS_FOR_TARGET CPPFLAGS_FOR_TARGET CXXFLAGS_FOR_TARGET LIBCFLAGS_FOR_TARGET XGCC_FLAGS_FOR_TARGET; do
+		export "${__}=${GCCTARGET_FLAGS}";
+	done;
+	for __ in cbb_cflags_for_stage1 cbb_cflags_for_stage2 cbb_cflags_for_stage3 cbb_cflags_for_stage4; do
+		export "${__}=${CFLAGS_FOR_BUILD}" ;
+	done;
+	export CFLAGS CXXFLAGS CFLAGS_FOR_BUILD CPPFLAGS_FOR_BUILD CXXFLAGS_FOR_BUILD CFLAGS_FOR_TARGET XGCC_FLAGS_FOR_TARGET CPPFLAGS_FOR_TARGET CXXFLAGS_FOR_TARGET LIBCFLAGS_FOR_TARGET;
+	if ! is_build_script_done configure; then
+		insecure_mkdir ${PKG_PREFIX}/${PKG_TARGET};
+		if [ \! -d ${PKG_PREFIX}/${PKG_TARGET}/usr ]; then
+			ln -s -- . ${PKG_PREFIX}/${PKG_TARGET}/usr;
+		fi;
+		if [ "${ARCH}" = nt32 ]; then
+			_configure_args="--host=i686-nt32-midipix";
+		else
+			_configure_args="--host=x86_64-nt64-midipix";
+		fi;
+		_configure_args="${_configure_args}	\
+			--disable-sjlj-exceptions	\
+			--prefix=/			\
+			--with-elf=${PKG_PREFIX}	\
+			--with-gmp=${PKG_PREFIX}	\
+			--with-mpc=${PKG_PREFIX}	\
+			--with-mpfr=${PKG_PREFIX}	\
+			--with-sysroot=";
+		secure_rm ${PKG_BUILD_DIR};
+		insecure_mkdir ${PKG_BUILD_DIR};
+		secure_cd ${PKG_BUILD_DIR};
+		../cbb-gcc-${PKG_GCC_VERSION}/configure		\
+			--disable-bootstrap			\
+			--disable-libmudflap			\
+			--disable-multilib			\
+			--disable-nls				\
+			--disable-obsolete			\
+			--disable-symvers			\
+			--enable-canonical-system-headers	\
+			--enable-__cxa_atexit			\
+			--enable-debug				\
+			--enable-gnu-indirect-function		\
+			--enable-gnu-unique-object		\
+			--enable-initfini-array			\
+			--enable-languages=c,c++,objc,lto	\
+			--enable-libstdcxx-debug		\
+			--enable-lto				\
+			--enable-multiarch			\
+			--enable-secureplt			\
+			--enable-shared				\
+			--enable-threads=posix			\
+			--target=${PKG_TARGET}			\
+			--with-fpmath=sse			\
+			${_configure_args};
+		set_build_script_done configure clean -build;
+	else
+		cd ${PKG_BUILD_DIR};
+	fi;
+	if ! is_build_script_done clean; then
+		make ${MAKEFLAGS} clean;
+		set_build_script_done clean -build;
+	fi;
+	if ! is_build_script_done build; then
+		make ${MAKEFLAGS} all-gcc;
+		make ${MAKEFLAGS} all-target-libgcc;
+		make ${MAKEFLAGS} all-target-libstdc++-v3;
+		make ${MAKEFLAGS} all;
+		set_build_script_done build -install;
+	fi;
+	if ! is_build_script_done install; then
+		make ${MAKEFLAGS} DESTDIR=${PKG_PREFIX} install;
+		set_build_script_done install finish;
+	fi;
+};
+
+pkg_gcc_stage1_x86_64_w64_mingw32_all() {
+	if [ ! -L ${PREFIX}/${PKG_TARGET}/mingw ]; then
+		secure_rm ${PREFIX}/${PKG_TARGET}/mingw;
+		ln -sf . ${PREFIX}/${PKG_TARGET}/mingw;
+	fi;
+	if [ ! -d ${PREFIX}/${PKG_TARGET}/mingw/include ]; then
+		secure_rm ${PREFIX}/${PKG_TARGET}/mingw/include;
+		insecure_mkdir ${PREFIX}/${PKG_TARGET}/mingw/include;
+	fi;
+	PKG_GCC_VERSION="${PKG_GCC_STAGE1_X86_64_W64_MINGW32_VERSION}";
+	export MAKE="make LIBTOOL=slibtool";
+	# GCC, stage1.
+	if ! is_build_script_done fetch; then
+		fetch_git cbb-gcc-${PKG_GCC_VERSION}		\
+			${GITROOT}/cbb/cbb-gcc-${PKG_GCC_VERSION};
+		set_build_script_done fetch -configure;
+	fi;
+	set_build_dir cbb-gcc-${PKG_GCC_VERSION}_x86_64_w64_mingw32 cross;
+	export	cbb_ldflags_for_target=--sysroot=${PKG_PREFIX}	\
+		cbb_sysroot_for_libgcc=${PKG_PREFIX}		\
+		cbb_target=${PKG_TARGET}			\
+		cbb_neutral_libiberty=no			\
+		cbb_xgcc_for_specs=${WORKDIR}/${PKG_BUILD_DIR}/gcc/xgcc;
+	GCCTARGET_FLAGS="-DIN_TARGET_LIBRARY_BUILD --sysroot=${PKG_PREFIX}";
+	GCCFLAGS="${CFLAGS:+${CFLAGS} }--include $(readlink -f ${WORKDIR}/cbb-gcc-${PKG_GCC_VERSION}/libc/cbb-musl-pe.h)";
+	for __ in CFLAGS CFLAGS_FOR_BUILD CPPFLAGS_FOR_BUILD CXXFLAGS CXXFLAGS_FOR_BUILD; do
+		export "${__}=${GCCFLAGS}";
+	done;
+	for __ in CFLAGS_FOR_TARGET CPPFLAGS_FOR_TARGET CXXFLAGS_FOR_TARGET LIBCFLAGS_FOR_TARGET XGCC_FLAGS_FOR_TARGET; do
+		export "${__}=${GCCTARGET_FLAGS}";
+	done;
+	for __ in cbb_cflags_for_stage1 cbb_cflags_for_stage2 cbb_cflags_for_stage3 cbb_cflags_for_stage4; do
+		export "${__}=${CFLAGS_FOR_BUILD}" ;
+	done;
+	export CFLAGS CXXFLAGS CFLAGS_FOR_BUILD CPPFLAGS_FOR_BUILD CXXFLAGS_FOR_BUILD CFLAGS_FOR_TARGET XGCC_FLAGS_FOR_TARGET CPPFLAGS_FOR_TARGET CXXFLAGS_FOR_TARGET LIBCFLAGS_FOR_TARGET;
+	if ! is_build_script_done configure; then
+		insecure_mkdir ${PKG_PREFIX}/include;
+		[ \! -d ${PKG_PREFIX}/usr ] &&			\
+			ln -s -- . ${PKG_PREFIX}/usr;
+		_configure_args="				\
+			--enable-sjlj-exceptions		\
+			--prefix=${PREFIX}			\
+			--with-sysroot=${PREFIX}/${PKG_TARGET}	\
+			--without-headers";
+		secure_rm ${PKG_BUILD_DIR};
+		insecure_mkdir ${PKG_BUILD_DIR};
+		secure_cd ${PKG_BUILD_DIR};
+		../cbb-gcc-${PKG_GCC_VERSION}/configure		\
+			--disable-bootstrap			\
+			--disable-libmudflap			\
+			--disable-multilib			\
+			--disable-nls				\
+			--disable-obsolete			\
+			--disable-symvers			\
+			--enable-canonical-system-headers	\
+			--enable-__cxa_atexit			\
+			--enable-debug				\
+			--enable-gnu-indirect-function		\
+			--enable-gnu-unique-object		\
+			--enable-initfini-array			\
+			--enable-languages=c,c++,objc,lto	\
+			--enable-libstdcxx-debug		\
+			--enable-lto				\
+			--enable-multiarch			\
+			--enable-secureplt			\
+			--enable-shared				\
+			--enable-threads=posix			\
+			--target=${PKG_TARGET}			\
+			--with-fpmath=sse			\
+			${_configure_args};
+		set_build_script_done configure clean -build;
+	else
+		cd ${PKG_BUILD_DIR};
+	fi;
+	if ! is_build_script_done clean; then
+		make ${MAKEFLAGS} clean;
+		set_build_script_done clean -build;
+	fi;
+	if ! is_build_script_done build; then
+		make ${MAKEFLAGS} all-gcc;
+		set_build_script_done build -install;
+	fi;
+	if ! is_build_script_done install; then
+		make ${MAKEFLAGS} install-gcc;
+		__="$(uname -s)";
+		if [ "${__#*CYGWIN*}" != "${__}" ]; then
+			ln -s -- ${PREFIX}/libexec/gcc/${PKG_TARGET}/${PKG_GCC_VERSION}/liblto_plugin.dll.a	\
+				ln -s -- ${PREFIX}/libexec/gcc/${PKG_TARGET}/${PKG_GCC_VERSION}/liblto_plugin.so;
+		fi;
+		set_build_script_done install finish;
+	fi;
+};
+
+pkg_gcc_native_x86_64_w64_mingw32_all() {
+	if [ ! -L ${PREFIX}/${PKG_TARGET}/mingw ]; then
+		secure_rm ${PREFIX}/${PKG_TARGET}/mingw;
+		ln -sf . ${PREFIX}/${PKG_TARGET}/mingw;
+	fi;
+	if [ ! -d ${PREFIX}/${PKG_TARGET}/mingw/include ]; then
+		secure_rm ${PREFIX}/${PKG_TARGET}/mingw/include;
+		insecure_mkdir ${PREFIX}/${PKG_TARGET}/mingw/include;
+	fi;
+	PKG_GCC_VERSION="${PKG_GCC_NATIVE_X86_W64_MINGW32_VERSION}";
+	export MAKE="make LIBTOOL=slibtool";
+	# GCC, native.
+	set_build_dir cbb-gcc-${PKG_GCC_VERSION}_x86_64_w64_mingw32 native;
+	export 	cbb_ldflags_for_target=--sysroot=${PKG_PREFIX}	\
+		cbb_sysroot_for_libgcc=${PKG_PREFIX}		\
+		cbb_target=${PKG_TARGET}			\
+		cbb_xgcc_for_specs=${PKG_TARGET}-gcc		\
+		sysroot_headers_suffix=${PKG_PREFIX};
+	GCCTARGET_FLAGS="-DIN_TARGET_LIBRARY_BUILD --sysroot=${PKG_PREFIX}";
+	GCCFLAGS="${CFLAGS:+${CFLAGS} }--include $(readlink -f ${WORKDIR}/cbb-gcc-${PKG_GCC_VERSION}/libc/cbb-musl-pe.h)";
+	for __ in CFLAGS CFLAGS_FOR_BUILD CPPFLAGS_FOR_BUILD CXXFLAGS CXXFLAGS_FOR_BUILD; do
+		export "${__}=${GCCFLAGS}";
+	done;
+	for __ in CFLAGS_FOR_TARGET CPPFLAGS_FOR_TARGET CXXFLAGS_FOR_TARGET LIBCFLAGS_FOR_TARGET XGCC_FLAGS_FOR_TARGET; do
+		export "${__}=${GCCTARGET_FLAGS}";
+	done;
+	for __ in cbb_cflags_for_stage1 cbb_cflags_for_stage2 cbb_cflags_for_stage3 cbb_cflags_for_stage4; do
+		export "${__}=${CFLAGS_FOR_BUILD}" ;
+	done;
+	export CFLAGS CXXFLAGS CFLAGS_FOR_BUILD CPPFLAGS_FOR_BUILD CXXFLAGS_FOR_BUILD CFLAGS_FOR_TARGET XGCC_FLAGS_FOR_TARGET CPPFLAGS_FOR_TARGET CXXFLAGS_FOR_TARGET LIBCFLAGS_FOR_TARGET;
+	if ! is_build_script_done configure; then
+		insecure_mkdir ${PKG_PREFIX}/${PKG_TARGET};
+		if [ \! -d ${PKG_PREFIX}/${PKG_TARGET}/usr ]; then
+			ln -s -- . ${PKG_PREFIX}/${PKG_TARGET}/usr;
+		fi;
+		_configure_args="${_configure_args}	\
+			--build=x86_64-unknown-linux-gnu\
+			--host=x86_64-nt64-midipix	\
+			--without-headers		\
+			--enable-sjlj-exceptions	\
+			--prefix=/			\
+			--with-elf=${PKG_PREFIX}	\
+			--with-gmp=${PKG_PREFIX}	\
+			--with-mpc=${PKG_PREFIX}	\
+			--with-mpfr=${PKG_PREFIX}	\
+			--with-sysroot=";
+		patch -b -d ${PKG_SUBDIR} -p1 < ${MIDIPIX_BUILD_PWD}/patches/${PKG_NAME}.local.patch;
+		secure_rm ${PKG_BUILD_DIR};
+		insecure_mkdir ${PKG_BUILD_DIR};
+		secure_cd ${PKG_BUILD_DIR};
+		../cbb-gcc-${PKG_GCC_VERSION}/configure		\
+			--disable-bootstrap			\
+			--disable-libmudflap			\
+			--disable-multilib			\
+			--disable-nls				\
+			--disable-obsolete			\
+			--disable-symvers			\
+			--enable-canonical-system-headers	\
+			--enable-__cxa_atexit			\
+			--enable-debug				\
+			--enable-gnu-indirect-function		\
+			--enable-gnu-unique-object		\
+			--enable-initfini-array			\
+			--enable-languages=c,c++,objc,lto	\
+			--enable-libstdcxx-debug		\
+			--enable-lto				\
+			--enable-multiarch			\
+			--enable-secureplt			\
+			--enable-shared				\
+			--enable-threads=posix			\
+			--target=${PKG_TARGET}			\
+			--with-fpmath=sse			\
+			${_configure_args};
+		set_build_script_done configure clean -build;
+	else
+		cd ${PKG_BUILD_DIR};
+	fi;
+	if ! is_build_script_done clean; then
+		make ${MAKEFLAGS} clean;
+		set_build_script_done clean -build;
+	fi;
+	if ! is_build_script_done build; then
+		make ${MAKEFLAGS} all-gcc;
+		make ${MAKEFLAGS} all-target-libgcc;
+		make ${MAKEFLAGS} all-target-libstdc++-v3;
+		make ${MAKEFLAGS} all;
+		set_build_script_done build -install;
+	fi;
+	if ! is_build_script_done install; then
+		make ${MAKEFLAGS} DESTDIR=${PKG_PREFIX} install;
+		set_build_script_done install finish;
+	fi;
+};
+
+# vim:filetype=sh
diff --git a/vars/gcc_full.vars b/vars/gcc_full.vars
new file mode 120000
index 00000000..55c0ef10
--- /dev/null
+++ b/vars/gcc_full.vars
@@ -0,0 +1 @@
+gcc.vars
\ No newline at end of file
diff --git a/vars/gcc_libstdcpp_v3.vars b/vars/gcc_libstdcpp_v3.vars
new file mode 120000
index 00000000..55c0ef10
--- /dev/null
+++ b/vars/gcc_libstdcpp_v3.vars
@@ -0,0 +1 @@
+gcc.vars
\ No newline at end of file
diff --git a/vars/gcc_native.vars b/vars/gcc_native.vars
new file mode 120000
index 00000000..55c0ef10
--- /dev/null
+++ b/vars/gcc_native.vars
@@ -0,0 +1 @@
+gcc.vars
\ No newline at end of file
diff --git a/vars/gcc_native_x86_64_w64_mingw32.vars b/vars/gcc_native_x86_64_w64_mingw32.vars
new file mode 120000
index 00000000..55c0ef10
--- /dev/null
+++ b/vars/gcc_native_x86_64_w64_mingw32.vars
@@ -0,0 +1 @@
+gcc.vars
\ No newline at end of file
diff --git a/vars/gcc_runtime.vars b/vars/gcc_runtime.vars
new file mode 120000
index 00000000..55c0ef10
--- /dev/null
+++ b/vars/gcc_runtime.vars
@@ -0,0 +1 @@
+gcc.vars
\ No newline at end of file
diff --git a/vars/gcc_stage1.vars b/vars/gcc_stage1.vars
new file mode 120000
index 00000000..55c0ef10
--- /dev/null
+++ b/vars/gcc_stage1.vars
@@ -0,0 +1 @@
+gcc.vars
\ No newline at end of file
diff --git a/vars/gcc_stage1_x86_64_w64_mingw32.vars b/vars/gcc_stage1_x86_64_w64_mingw32.vars
new file mode 120000
index 00000000..55c0ef10
--- /dev/null
+++ b/vars/gcc_stage1_x86_64_w64_mingw32.vars
@@ -0,0 +1 @@
+gcc.vars
\ No newline at end of file
diff --git a/vars/musl.vars b/vars/musl.vars
new file mode 100644
index 00000000..bec1e06c
--- /dev/null
+++ b/vars/musl.vars
@@ -0,0 +1,111 @@
+#
+# . ./build.vars and set -o errexit -o noglob are assumed.
+# Order: no_complex, native, full
+#
+
+pkgp_musl_configure() {
+	secure_rm ${PKG_BUILD_DIR};
+	insecure_mkdir ${PKG_BUILD_DIR};
+	secure_cd ${PKG_BUILD_DIR};
+	env	lz_cflags_cmdline=""		\
+		lz_debug="yes"			\
+	../lazy/lazy				\
+		-a ${ARCH}			\
+		-c gcc				\
+		-f ${PKG_PREFIX}		\
+		-n musl				\
+		-p ../musl-${PKG_MUSL_VERSION}	\
+		-t ${lz_target}			\
+		-x config;
+};
+
+pkg_musl_no_complex_all() {
+	PKG_MUSL_VERSION="${PKG_MUSL_NO_COMPLEX_VERSION}";
+	# Git clone what we need.
+	fetch_git lazy ${GITROOT}/lazy;
+	export lz_arch=${ARCH} lz_cflags_debug=-O2 lz_target=${TARGET};
+	# Musl: build (no-complex)
+	_install=install_no_complex;
+	set_build_dir musl-${PKG_MUSL_VERSION}-${2} cross;
+	if ! is_build_script_done fetch; then
+		fetch http://www.musl-libc.org/releases/musl-${PKG_MUSL_VERSION}.tar.gz	\
+			${PKG_MUSL_NO_COMPLEX_SHA256SUM};
+		secure_rm mmglue;
+		fetch_git mmglue ${GITROOT}/mmglue;
+		set_build_script_done fetch -extract;
+	fi;
+	if ! is_build_script_done extract; then
+		secure_rm musl-${PKG_MUSL_VERSION};
+		tar -xf ${DLCACHEDIR}/musl-${PKG_MUSL_VERSION}.tar.gz;
+		set +o noglob; cp -R -- mmglue/* musl-${PKG_MUSL_VERSION}/; set -o noglob;
+		set_build_script_done extract -configure;
+	fi;
+	if ! is_build_script_done configure; then
+		pkgp_musl_configure;
+		set_build_script_done configure clean -build;
+	else
+		cd ${PKG_BUILD_DIR};
+	fi;
+	if ! is_build_script_done clean; then
+		make ${MAKEFLAGS} clean;
+		set_build_script_done clean -build;
+	fi;
+	if ! is_build_script_done build; then
+		./lazy	-e ${_install}			\
+			-x build;
+		set_build_script_done build finish;
+	fi;
+};
+
+pkg_musl_native_all() {
+	PKG_MUSL_VERSION="${PKG_MUSL_NATIVE_VERSION}";
+	# Git clone what we need.
+	fetch_git lazy ${GITROOT}/lazy;
+	export lz_arch=${ARCH} lz_cflags_debug=-O2 lz_target=${TARGET};
+	# Musl: build (full)
+	_install=install;
+	set_build_dir musl-${PKG_MUSL_VERSION} native;
+	if ! is_build_script_done configure; then
+		pkgp_musl_configure;
+		set_build_script_done configure clean -build;
+	else
+		cd ${PKG_BUILD_DIR};
+	fi;
+	if ! is_build_script_done clean; then
+		make ${MAKEFLAGS} clean;
+		set_build_script_done clean -build;
+	fi;
+	if ! is_build_script_done build; then
+		./lazy	-e ${_install}			\
+			-x build;
+		ln -sf -- ../lib/libc.so ${PKG_PREFIX}/bin/ldd;
+		set_build_script_done build finish;
+	fi;
+};
+
+pkg_musl_full_all() {
+	PKG_MUSL_VERSION="${PKG_MUSL_FULL_VERSION}";
+	# Git clone what we need.
+	fetch_git lazy ${GITROOT}/lazy;
+	export lz_arch=${ARCH} lz_cflags_debug=-O2 lz_target=${TARGET};
+	# Musl: build (full)
+	_install=install;
+	set_build_dir musl-${PKG_MUSL_VERSION} cross;
+	if ! is_build_script_done configure; then
+		pkgp_musl_configure;
+		set_build_script_done configure clean -build;
+	else
+		cd ${PKG_BUILD_DIR};
+	fi;
+	if ! is_build_script_done clean; then
+		make ${MAKEFLAGS} clean;
+		set_build_script_done clean -build;
+	fi;
+	if ! is_build_script_done build; then
+		./lazy	-e ${_install}			\
+			-x build;
+		set_build_script_done build finish;
+	fi;
+};
+
+# vim:filetype=sh
diff --git a/vars/musl_full.vars b/vars/musl_full.vars
new file mode 120000
index 00000000..aed756b9
--- /dev/null
+++ b/vars/musl_full.vars
@@ -0,0 +1 @@
+musl.vars
\ No newline at end of file
diff --git a/vars/musl_native.vars b/vars/musl_native.vars
new file mode 120000
index 00000000..aed756b9
--- /dev/null
+++ b/vars/musl_native.vars
@@ -0,0 +1 @@
+musl.vars
\ No newline at end of file
diff --git a/vars/musl_no_complex.vars b/vars/musl_no_complex.vars
new file mode 120000
index 00000000..aed756b9
--- /dev/null
+++ b/vars/musl_no_complex.vars
@@ -0,0 +1 @@
+musl.vars
\ No newline at end of file
diff --git a/vars/psxstub.vars b/vars/psxstub.vars
index cf18c4b1..2dad9c4e 100644
--- a/vars/psxstub.vars
+++ b/vars/psxstub.vars
@@ -2,7 +2,8 @@
 # . ./build.vars and set -o errexit -o noglob are assumed.
 #
 
-pkg_psxstub_finish() {
+pkg_psxstub_all() {
+	pkg_fetch;
 	if ! is_build_script_done install; then
 		if [ "${TARGET}" = i686-nt32-midipix ]	\
 		|| [ "${TARGET}" = x86_64-nt64-midipix ]; then