Index: head/Mk/bsd.qt.mk
===================================================================
--- head/Mk/bsd.qt.mk
+++ head/Mk/bsd.qt.mk
@@ -313,9 +313,12 @@
 _USE_QT_ALL=	assistant dbus declarative designer doc gui help \
 				imageformats l10n linguist linguisttools multimedia \
 				network opengl pixeltool qdbusviewer qmake script \
-				scripttools sql sql-ibase sql-mysql sql-odbc sql-pgsql \
+				scripttools sql sql-mysql sql-odbc sql-pgsql \
 				sql-sqlite2 sql-sqlite3 svg testlib webkit \
 				xml xmlpatterns
+.if ${ARCH} == amd64 || ${ARCH} == i386
+_USE_QT_ALL+=	sql-ibase
+.endif
 
 _USE_QT4_ONLY=	accessible assistant-adp assistantclient clucene codecs-cn codecs-jp \
 				codecs-kr codecs-tw corelib demo graphicssystems-opengl \
Index: head/databases/qt4-ibase-plugin/Makefile
===================================================================
--- head/databases/qt4-ibase-plugin/Makefile
+++ head/databases/qt4-ibase-plugin/Makefile
@@ -7,4 +7,6 @@
 DB=		ibase
 USES=		firebird
 
+ONLY_FOR_ARCHS=	i386 amd64
+
 .include "${.CURDIR:H:H}/devel/qt4/Makefile.sqldrivers"
Index: head/devel/qt4/Makefile
===================================================================
--- head/devel/qt4/Makefile
+++ head/devel/qt4/Makefile
@@ -31,7 +31,7 @@
 NLS_USE=	l10n
 
 SQL_PLUGINS_DESC=	Install database plugins for QtSql
-SQL_PLUGINS_USE=sql-ibase sql-mysql sql-odbc sql-pgsql sql-sqlite2 \
+SQL_PLUGINS_USE=sql-mysql sql-odbc sql-pgsql sql-sqlite2 \
 		sql-sqlite3
 
 TOOLS_DESC=	Install Qt tools (qmake, moc, etc.)
@@ -43,5 +43,11 @@
 .for opt in ${OPTIONS_DEFINE}
 ${opt}_USE:=	${${opt}_USE:S/^/QT4=/:S/$/_run/}
 .endfor
+
+.include <bsd.port.options.mk>
+
+.if ${ARCH} == amd64 || ${ARCH} == i386
+SQL_PLUGINS_USE+=	sql-ibase
+.endif
 
 .include <bsd.port.mk>