Index: head/databases/akonadi/Makefile
===================================================================
--- head/databases/akonadi/Makefile	(revision 521758)
+++ head/databases/akonadi/Makefile	(revision 521759)
@@ -1,64 +1,87 @@
 # $FreeBSD$
 
 PORTNAME=	akonadi
 DISTVERSION=	${KDE_APPLICATIONS_VERSION}
+PORTREVISION=	1
 CATEGORIES=	databases kde kde-applications
 
 MAINTAINER=	kde@FreeBSD.org
 COMMENT=	Storage server for KDE-Pim
 
 LICENSE=	LGPL21
 
 LIB_DEPENDS=	libboost_thread.so:devel/boost-libs
 # Let process generate meaningful backtrace on core dump.
 BUILD_DEPENDS=	xsltproc:textproc/libxslt
 
 CONFLICTS=	akonadi-[0-9]* akonadi-kf5-git-[0-9]*
 
 USES=		cmake compiler:c++11-lib gettext gnome kde:5 qt:5 \
 		shared-mime-info tar:xz
 USE_GNOME=	libxml2
 USE_KDE=	auth codecs completion config configwidgets coreaddons crash \
 		dbusaddons ecm guiaddons i18n iconthemes itemmodels itemviews \
 		kio service windowsystem widgetsaddons xmlgui \
 		designerplugin_build designerplugin_run
 USE_QT=		concurrent core dbus designer gui network sql testlib widgets xml \
 		buildtools_build qmake_build
 CMAKE_ARGS+=	-DCMAKE_REQUIRED_INCLUDES:STRING="${LOCALBASE}/include"
 
 USE_LDCONFIG=	yes
 
+OPTIONS_DEFINE=	DOCS
 OPTIONS_MULTI=		DB
 OPTIONS_MULTI_DB=	MYSQL PGSQL SQLITE
 OPTIONS_SUB=		yes
+OPTIONS_DEFAULT=	MYSQL
 
 MYSQL_DESC=		Install MySQL Qt plugin and server
 MYSQL_USES=	mysql:server qt:5
 MYSQL_USE=		QT=sql-mysql_run
+MYSQL_CMAKE_BOOL=	AKONADI_BUILD_MYSQL
 
 PGSQL_DESC=		Install PostgreSQL Qt plugin
 # Do not add a dependency on PostgreSQL server as someone preferring
 # it over MySQL might like to use some advanced configuration, like a
 # remote server.
 #PGSQL_USE=	PGSQL=server
 PGSQL_USES=	qt:5
 PGSQL_USE=		QT=sql-pgsql_run
+PGSQL_CMAKE_BOOL=	AKONADI_BUILD_PGSQL
 
 SQLITE_DESC=		Enable SQLite backend
 SQLITE_USES=		qt:5 sqlite:3
 SQLITE_USE=		QT=sql-sqlite3_run
-SQLITE_CMAKE_ON=	-DAKONADI_BUILD_QSQLITE:BOOL=ON
-SQLITE_CMAKE_OFF=	-DAKONADI_BUILD_QSQLITE:BOOL=OFF
+SQLITE_CMAKE_BOOL=	AKONADI_BUILD_QSQLITE
 
-OPTIONS_DEFAULT=	MYSQL
+.include <bsd.port.options.mk>
 
-OPTIONS_DEFINE=	DOCS
+# Multiple backends may be enabled, but there can be only
+# one default. Set a default (the user can change it locally)
+# based on the selected backends, preferring MySQL (if enabled).
+#
+# If you build this port with only a single backend selected,
+# that one will be the default. This is useful for users of SQLite.
+.if ${PORT_OPTIONS:MMYSQL}
+CMAKE_ARGS+=	-DDATABASE_BACKEND=MYSQL
+.else
+.  if ${PORT_OPTIONS:MPGSQL}
+CMAKE_ARGS+=	-DDATABASE_BACKEND=POSTGRES
+.  else
+.    if ${PORT_OPTIONS:MSQLITE}
+CMAKE_ARGS+=	-DDATABASE_BACKEND=SQLITE
+.    else
+# Nothing else selected, very odd
+CMAKE_ARGS+=	-DDATABASE_BACKEND=MYSQL
+.    endif
+.  endif
+.endif
 
 post-patch:
 # To avoid overflow, MySQL settings need to be lower than
 # INT_MAX / kern.hz. This setting assumes kern.hz=2000, and
 # it's nothing but a temporary hack.
 	${REINPLACE_CMD} -e '/wait_timeout/ s|31536000|1073741|' \
 		${PATCH_WRKSRC}/src/server/storage/*.conf
 
 .include <bsd.port.mk>