diff --git a/common/build-style/sip-build.sh b/common/build-style/sip-build.sh
new file mode 100644
index 0000000000..d8b3bcea98
--- /dev/null
+++ b/common/build-style/sip-build.sh
@@ -0,0 +1,147 @@
+#
+# This helper is for templates using sip-build.
+#
+
+do_configure() {
+	local _qt=
+	local _spec=
+	local _mkspec=
+
+	: "${sip_builddir:=build}"
+	mkdir -p "$sip_builddir"
+
+	if [ ! -d /$py3_sitelib/pyqtbuild ]; then
+		: "who uses sip-build without qmake anyway?"
+	elif [ -x /usr/lib/qt6/bin/qmake ]; then
+		_qt=qt6
+	elif [ -x /usr/lib/qt5/bin/qmake ]; then
+		_qt=qt5
+	else
+		msg_error 'qmake not found\n'
+	fi
+
+	if [ ! "$_qt" ]; then
+		: "who use sip-build without qmake anyway?"
+	elif [ "$CROSS_BUILD" ]; then
+		_mkspec="usr/lib/$_qt/mkspecs"
+		_spec="$XBPS_WRAPPERDIR/sip-build/target-spec/linux-g++"
+		mkdir -p "$_spec"
+		cat >"$_spec/qmake.conf" <<-_EOF
+		MAKEFILE_GENERATOR      = UNIX
+		CONFIG                 += incremental no_qt_rpath
+		QMAKE_INCREMENTAL_STYLE = sublib
+
+		include(/$_mkspec/common/linux.conf)
+		include(/$_mkspec/common/gcc-base-unix.conf)
+		include(/$_mkspec/common/g++-unix.conf)
+
+		QMAKE_TARGET_CONFIG     = $XBPS_CROSS_BASE/$_mkspec/qconfig.pri
+		QMAKE_TARGET_MODULE     = $XBPS_CROSS_BASE/$_mkspec/qmodule.pri
+		QMAKEMODULES            = $XBPS_CROSS_BASE/$_mkspec/modules
+		QMAKE_CC                = $CC
+		QMAKE_CXX               = $CXX
+		QMAKE_LINK              = $CXX
+		QMAKE_LINK_C            = $CC
+		QMAKE_LINK_SHLIB        = $CXX
+
+		QMAKE_AR                = $XBPS_CROSS_TRIPLET-gcc-ar cqs
+		QMAKE_OBJCOPY           = $OBJCOPY
+		QMAKE_NM                = $NM -P
+		QMAKE_STRIP             = $STRIP
+
+		QMAKE_CFLAGS            = $CFLAGS -I$XBPS_CROSS_BASE/usr/include/python$py3_ver
+		QMAKE_CXXFLAGS          = $CXXFLAGS -I$XBPS_CROSS_BASE/usr/include/python$py3_ver
+		QMAKE_LFLAGS            = -L$XBPS_CROSS_BASE/usr/lib $LDFLAGS
+		load(qt_config)
+		_EOF
+
+		printf '#include "%s/%s/linux-g++/qplatformdefs.h"\n' \
+			"$XBPS_CROSS_BASE" "$_mkspec" >"$_spec/qplatformdefs.h"
+		cat >"$XBPS_WRAPPERDIR/sip-build/qt.conf" <<-_EOF
+		[Paths]
+		Sysroot=$XBPS_CROSS_BASE
+		Prefix=$XBPS_CROSS_BASE/usr
+		ArchData=$XBPS_CROSS_BASE/usr/lib/$_qt
+		Data=$XBPS_CROSS_BASE/usr/share/$_qt
+		Documentation=$XBPS_CROSS_BASE/usr/share/doc/$_qt
+		Headers=$XBPS_CROSS_BASE/usr/include/$_qt
+		Libraries=$XBPS_CROSS_BASE/usr/lib
+		LibraryExecutables=/usr/lib/$_qt/libexec
+		Binaries=/usr/lib/$_qt/bin
+		Tests=$XBPS_CROSS_BASE/usr/tests
+		Plugins=/usr/lib/$_qt/plugins
+		Imports=$XBPS_CROSS_BASE/usr/lib/$_qt/imports
+		Qml2Imports=$XBPS_CROSS_BASE/usr/lib/$_qt/qml
+		Translations=$XBPS_CROSS_BASE/usr/share/$_qt/translations
+		Settings=$XBPS_CROSS_BASE/etc/xdg
+		Examples=$XBPS_CROSS_BASE/usr/share/$_qt/examples
+		HostPrefix=/usr
+		HostData=/usr/lib/$_qt
+		HostBinaries=/usr/lib/$_qt/bin
+		HostLibraries=/usr/lib
+		HostLibraryExecutables=/usr/lib/$_qt/libexec
+		Spec=linux-g++
+		TargetSpec=$_spec
+		_EOF
+		# Call it sip-qmake to not override qmake build-helper
+		#
+		# XXX: Intentionally quote {C,CXX,LD}FLAGS here but not native.
+		# - Cross Build:
+		#   + base flags will be picked up from QMAKE_{C,CXX,LD}FLAGS
+		#   + hardening flags will be picked up from environment variables
+		# - Native Build:
+		#   + hardening flags will be picked up first (Makefile, qt.conf?)
+		#   + base flags will be picked up from QMAKE_{C,CXX,LD}FLAGS
+		# Maybe there're better workaround, I don't know.
+		cat >"$XBPS_WRAPPERDIR/sip-qmake" <<-_EOF
+		#!/bin/sh
+		exec /usr/lib/$_qt/bin/qmake "\$@" \\
+		        -qtconf "$XBPS_WRAPPERDIR/sip-build/qt.conf" \\
+		        PKG_CONFIG_EXECUTABLE=${XBPS_WRAPPERDIR}/${PKG_CONFIG} \\
+		        QMAKE_CFLAGS+="\$CFLAGS" \\
+		        QMAKE_CXXFLAGS+="\$CXXFLAGS" \\
+		        QMAKE_LFLAGS+="\$LDFLAGS"
+		_EOF
+		chmod 755 ${XBPS_WRAPPERDIR}/sip-qmake
+	else
+		cat >"${XBPS_WRAPPERDIR}/sip-qmake" <<-_EOF
+		#!/bin/sh
+		exec /usr/lib/$_qt/bin/qmake \\
+		        "\$@" \\
+		        PREFIX=/usr \\
+		        QT_INSTALL_PREFIX=/usr \\
+		        LIB=/usr/lib \\
+		        QMAKE_CC="$CC" QMAKE_CXX="$CXX" \\
+		        QMAKE_LINK="$CXX" QMAKE_LINK_C="$CC" \\
+		        QMAKE_CFLAGS+="$CFLAGS" \\
+		        QMAKE_CXXFLAGS+="$CXXFLAGS" \\
+		        QMAKE_LFLAGS+="$LDFLAGS" \\
+		        CONFIG+=no_qt_rpath
+		_EOF
+		chmod 755 ${XBPS_WRAPPERDIR}/sip-qmake
+	fi
+
+	sip-build --no-make \
+		${_qt:+--qmake "$XBPS_WRAPPERDIR/sip-qmake"} \
+		--api-dir /usr/share/$_qt/qsci/api/python \
+		$configure_args \
+		--build-dir "$sip_builddir"
+
+	if [ "$CROSS_BUILD" ]; then
+		# -I/usr/include/python$py3_ver is set by sip-build :(
+		find "$sip_builddir" -name Makefile |
+		xargs sed -i "s,-I\\(/usr/include\\),-I$XBPS_CROSS_BASE\\1,g"
+	fi
+}
+
+do_build() {
+	: "${sip_builddir:=build}"
+	make -C "${sip_builddir}" ${makejobs}
+}
+
+do_install() {
+	: "${sip_builddir:=build}"
+	make -C "${sip_builddir}" \
+		DESTDIR=${DESTDIR} INSTALL_ROOT=${DESTDIR} \
+		install
+}