Adapt to Qt6

.github/workflows/test.yaml

@@ -25,12 +25,12 @@ jobs:
         if: matrix.image.name == 'ubuntu'
         run: |
           apt-get update
-          DEBIAN_FRONTEND=noninteractive apt-get install -y --no-install-recommends dbus gtk-doc-tools intltool libaudit-dev libgcrypt20-dev libgirepository1.0-dev libglib2.0-dev libpam0g-dev libtool libxcb1-dev libxdmcp-dev libxklavier-dev python3 python3-gi python-is-python3 qtbase5-dev valac yelp-tools
+          DEBIAN_FRONTEND=noninteractive apt-get install -y --no-install-recommends dbus gtk-doc-tools intltool libaudit-dev libgcrypt20-dev libgirepository1.0-dev libglib2.0-dev libpam0g-dev libtool libxcb1-dev libxdmcp-dev libxklavier-dev python3 python3-gi python-is-python3 qt6-base-dev valac yelp-tools
 
       - name: Install dependencies (Fedora)
         if: matrix.image.name == 'fedora'
         run: |
-          dnf install -y audit-libs-devel dbus-daemon gcc gcc-c++ gobject-introspection-devel glib2-devel gtk-doc intltool libgcrypt-devel libtool libxcb-devel libxklavier-devel libXdmcp-devel make pam-devel python3-gobject qt5-qtbase-devel redhat-rpm-config vala yelp-tools
+          dnf install -y audit-libs-devel dbus-daemon gcc gcc-c++ gobject-introspection-devel glib2-devel gtk-doc intltool libgcrypt-devel libtool libxcb-devel libxklavier-devel libXdmcp-devel make pam-devel python3-gobject qt6-qtbase-devel redhat-rpm-config vala yelp-tools
 
       - name: Build and test
         run: |

configure.ac

@@ -121,6 +121,35 @@ if test x"$enable_liblightdm_qt5" != "xno"; then
 fi
 AM_CONDITIONAL(COMPILE_LIBLIGHTDM_QT5, test x"$compile_liblightdm_qt5" != "xno")
 
+AC_ARG_ENABLE(liblightdm-qt6,
+	AS_HELP_STRING([--enable-liblightdm-qt6],[Enable LightDM client Qt6 libraries [[default=auto]]]),
+	[enable_liblightdm_qt6=$enableval],
+	[enable_liblightdm_qt6="auto"])
+compile_liblightdm_qt6=no
+if test x"$enable_liblightdm_qt6" != "xno"; then
+    PKG_CHECK_MODULES(LIBLIGHTDM_QT6, [
+        Qt6Core
+        Qt6DBus
+        Qt6Gui
+    ],
+    [compile_liblightdm_qt6=yes],
+    [if test "x$enable_liblightdm_qt6" != xauto; then
+        AC_MSG_FAILURE(
+          [--enable-liblightdm-qt6 was given, but test for Qt6 failed])
+      fi
+    ])
+
+    QT6_VALIDATE_MOC(MOC6)
+    if test x$MOC6 = x; then
+        compile_liblightdm_qt6=no
+        if test "x$enable_liblightdm_qt6" != xauto; then
+            AC_MSG_FAILURE(
+              [--enable-liblightdm-qt6 was given, but MOC not found])
+        fi
+    fi
+fi
+AM_CONDITIONAL(COMPILE_LIBLIGHTDM_QT6, test x"$compile_liblightdm_qt6" != "xno")
+
 AC_ARG_ENABLE([libaudit],
     AS_HELP_STRING([--enable-libaudit],
                    [Enable libaudit logging of login and logout events [[default=auto]]]),
@@ -212,6 +241,7 @@ liblightdm-gobject/liblightdm-gobject-1.pc
 liblightdm-gobject/Makefile
 liblightdm-qt/Makefile
 liblightdm-qt/liblightdm-qt5-3.pc
+liblightdm-qt/liblightdm-qt6-3.pc
 po/Makefile.in
 src/Makefile
 tests/Makefile
@@ -237,6 +267,7 @@ echo "
         GObject introspection:    $found_introspection
         Vala bindings:            $enable_vala
         liblightdm-qt5:           $compile_liblightdm_qt5
+        liblightdm-qt6:           $compile_liblightdm_qt6
         libaudit support:         $use_libaudit
         Enable tests:             $enable_tests
 "

debian/control

@@ -23,7 +23,7 @@ Build-Depends: autoconf,
                libxdmcp-dev,
                libxklavier-dev,
                pkg-config,
-               qtbase5-dev,
+               qt6-base-dev,
                quilt,
                valac,
                yelp-tools
@@ -77,16 +77,16 @@ Depends: ${misc:Depends},
 Description: Typelib file for liblightdm-1
  A GObject based library for LightDM clients to use to interface with LightDM.
 
-Package: liblightdm-qt5-3-0
+Package: liblightdm-qt6-3-0
 Section: libs
 Architecture: any
 Multi-Arch: same
 Pre-Depends: ${misc:Pre-Depends}
 Depends: ${misc:Depends},
          ${shlibs:Depends},
 Recommends: lightdm,
-Description: LightDM Qt 5 client library
- A Qt 5 based library for LightDM clients to use to interface with LightDM.
+Description: LightDM Qt 6 client library
+ A Qt 6 based library for LightDM clients to use to interface with LightDM.
 
 Package: liblightdm-gobject-1-dev
 Section: libdevel
@@ -104,15 +104,15 @@ Description: LightDM GObject client library (development files)
  This package contains header files and development information, which
  is useful for building LightDM greeters and user switchers.
 
-Package: liblightdm-qt5-3-dev
+Package: liblightdm-qt6-3-dev
 Section: libdevel
 Architecture: any
 Multi-Arch: same
 Depends: ${misc:Depends},
-         liblightdm-qt5-3-0 (= ${binary:Version}),
-         qtbase5-dev,
-Description: LightDM Qt 5 client library (development files)
- A Qt 5 based library for LightDM clients to use to interface with LightDM.
+         liblightdm-qt6-3-0 (= ${binary:Version}),
+         qt6-base-dev,
+Description: LightDM Qt 6 client library (development files)
+ A Qt 6 based library for LightDM clients to use to interface with LightDM.
  .
  This package contains header files and development information, which
  is useful for building LightDM greeters and user switchers.

debian/liblightdm-qt6-3-0.install

@@ -0,0 +1 @@
+usr/lib/*/liblightdm-qt6-*.so.*

debian/liblightdm-qt6-3-0.symbols

@@ -0,0 +1,104 @@
+liblightdm-qt6-3.so.0 liblightdm-qt6-3-0 #MINVER#
+ (c++|regex)"^.*::qt_metacall\(QMetaObject::Call, int, void[*][*]\)@Base$" 0
+ (c++|regex)"^.*::qt_metacast\(char const[*]\)@Base$" 0
+ (c++|regex)"^.*::staticMetaObject@Base$" 0
+ (c++|regex)"^.*::metaObject\(\) const@Base$" 0
+ (c++|regex)"^typeinfo for .*@Base$" 0
+ (c++|regex)"^typeinfo name for .*@Base$" 0
+ (c++|regex)"^vtable for .*@Base$" 0
+ (c++|optional)"QByteArray::~QByteArray()@Base" 0
+ (c++|optional)"QString::~QString()@Base" 0
+ (c++|optional)"QVector<int>::~QVector()@Base" 0
+ (c++|optional)"QHash<int, QByteArray>::deleteNode2(QHashData::Node*)@Base" 0
+ (c++|optional)"QHash<int, QByteArray>::duplicateNode(QHashData::Node*, void*)@Base" 0
+ (c++|optional)"QHash<int, QByteArray>::findNode(int const&, unsigned int) const@Base" 0
+ (c++|optional)"QHash<int, QByteArray>::~QHash()@Base" 0
+ (c++|optional)"SessionItem::~SessionItem()@Base" 1.21.3
+ (c++|optional)"SessionsModelPrivate::loadSessions(QLightDM::SessionsModel::SessionType)@Base" 1.21.3
+ (c++|optional)"SessionsModelPrivate::SessionsModelPrivate(QLightDM::SessionsModel*)@Base" 1.21.3
+ (c++|optional)"QList<SessionItem>::detach_helper_grow(int, int)@Base" 1.21.3
+ (c++|optional)"QList<SessionItem>::append(SessionItem const&)@Base" 1.21.3
+ (c++|optional)"UserItem::displayName() const@Base" 1.21.3
+ (c++|optional)"UserItem::~UserItem()@Base" 1.21.3
+ (c++|optional)"QList<UserItem>::detach_helper(int)@Base" 1.21.3
+ (c++|optional)"QList<UserItem>::detach_helper_grow(int, int)@Base" 1.21.3
+ (c++|optional)"QList<UserItem>::append(UserItem const&)@Base" 1.21.3
+ (c++)"QLightDM::UsersModel::UsersModel(QObject*)@Base" 1.21.3
+ (c++)"QLightDM::UsersModel::~UsersModel()@Base" 1.21.3
+ (c++)"QLightDM::SessionsModel::SessionsModel(QLightDM::SessionsModel::SessionType, QObject*)@Base" 1.21.3
+ (c++)"QLightDM::SessionsModel::SessionsModel(QObject*)@Base" 1.21.3
+ (c++)"QLightDM::SessionsModel::SessionsModel(QLightDM::SessionsModel::SessionType, QObject*)@Base" 1.21.3
+ (c++)"QLightDM::SessionsModel::SessionsModel(QObject*)@Base" 1.21.3
+ (c++)"QLightDM::SessionsModel::~SessionsModel()@Base" 1.21.3
+ (c++)"QLightDM::GreeterPrivate::cb_showPrompt(_LightDMGreeter*, char const*, LightDMPromptType, void*)@Base" 1.21.3
+ (c++)"QLightDM::GreeterPrivate::cb_showMessage(_LightDMGreeter*, char const*, LightDMMessageType, void*)@Base" 1.21.3
+ (c++)"QLightDM::GreeterPrivate::cb_autoLoginExpired(_LightDMGreeter*, void*)@Base" 1.21.3
+ (c++)"QLightDM::GreeterPrivate::cb_authenticationComplete(_LightDMGreeter*, void*)@Base" 1.21.3
+ (c++)"QLightDM::GreeterPrivate::cb_idle(_LightDMGreeter*, void*)@Base" 1.21.3
+ (c++)"QLightDM::GreeterPrivate::cb_reset(_LightDMGreeter*, void*)@Base" 1.21.3
+ (c++)"QLightDM::GreeterPrivate::GreeterPrivate(QLightDM::Greeter*)@Base" 1.21.3
+ (c++)"QLightDM::PowerInterface::canRestart()@Base" 1.21.3
+ (c++)"QLightDM::PowerInterface::canSuspend()@Base" 1.21.3
+ (c++)"QLightDM::PowerInterface::canShutdown()@Base" 1.21.3
+ (c++)"QLightDM::PowerInterface::canHibernate()@Base" 1.21.3
+ (c++)"QLightDM::PowerInterface::PowerInterfacePrivate::PowerInterfacePrivate()@Base" 1.21.3
+ (c++)"QLightDM::PowerInterface::restart()@Base" 1.21.3
+ (c++)"QLightDM::PowerInterface::suspend()@Base" 1.21.3
+ (c++)"QLightDM::PowerInterface::shutdown()@Base" 1.21.3
+ (c++)"QLightDM::PowerInterface::hibernate()@Base" 1.21.3
+ (c++)"QLightDM::PowerInterface::PowerInterface(QObject*)@Base" 1.21.3
+ (c++)"QLightDM::PowerInterface::~PowerInterface()@Base" 1.21.3
+ (c++)"QLightDM::UsersModelPrivate::cb_userAdded(_LightDMUserList*, _LightDMUser*, void*)@Base" 1.21.3
+ (c++)"QLightDM::UsersModelPrivate::cb_userChanged(_LightDMUserList*, _LightDMUser*, void*)@Base" 1.21.3
+ (c++)"QLightDM::UsersModelPrivate::cb_userRemoved(_LightDMUserList*, _LightDMUser*, void*)@Base" 1.21.3
+ (c++)"QLightDM::UsersModelPrivate::loadUsers()@Base" 1.21.3
+ (c++)"QLightDM::UsersModelPrivate::UsersModelPrivate(QLightDM::UsersModel*)@Base" 1.21.3
+ (c++)"QLightDM::UsersModelPrivate::~UsersModelPrivate()@Base" 1.21.3
+ (c++)"QLightDM::Greeter::showPrompt(QString, QLightDM::Greeter::PromptType)@Base" 1.21.3
+ (c++)"QLightDM::Greeter::connectSync()@Base" 1.21.3
+ (c++)"QLightDM::Greeter::setLanguage(QString const&)@Base" 1.21.3
+ (c++)"QLightDM::Greeter::showMessage(QString, QLightDM::Greeter::MessageType)@Base" 1.21.3
+ (c++)"QLightDM::Greeter::authenticate(QString const&)@Base" 1.21.3
+ (c++)"QLightDM::Greeter::setResettable(bool)@Base" 1.21.3
+ (c++)"QLightDM::Greeter::cancelAutologin()@Base" 1.21.3
+ (c++)"QLightDM::Greeter::startSessionSync(QString const&)@Base" 1.21.3
+ (c++)"QLightDM::Greeter::authenticateRemote(QString const&, QString const&)@Base" 1.21.3
+ (c++)"QLightDM::Greeter::authenticateAsGuest()@Base" 1.21.3
+ (c++)"QLightDM::Greeter::connectToDaemonSync()@Base" 1.21.3
+ (c++)"QLightDM::Greeter::cancelAuthentication()@Base" 1.21.3
+ (c++)"QLightDM::Greeter::authenticateAutologin()@Base" 1.21.3
+ (c++)"QLightDM::Greeter::autologinTimerExpired()@Base" 1.21.3
+ (c++)"QLightDM::Greeter::authenticationComplete()@Base" 1.21.3
+ (c++)"QLightDM::Greeter::ensureSharedDataDirSync(QString const&)@Base" 1.21.3
+ (c++)"QLightDM::Greeter::idle()@Base" 1.21.3
+ (c++)"QLightDM::Greeter::reset()@Base" 1.21.3
+ (c++)"QLightDM::Greeter::respond(QString const&)@Base" 1.21.3
+ (c++)"QLightDM::Greeter::Greeter(QObject*)@Base" 1.21.3
+ (c++)"QLightDM::Greeter::~Greeter()@Base" 1.21.3
+ (c++)"QLightDM::UsersModel::data(QModelIndex const&, int) const@Base" 1.21.3
+ (c++)"QLightDM::UsersModel::rowCount(QModelIndex const&) const@Base" 1.21.3
+ (c++)"QLightDM::SessionsModel::data(QModelIndex const&, int) const@Base" 1.21.3
+ (c++)"QLightDM::SessionsModel::rowCount(QModelIndex const&) const@Base" 1.21.3
+ (c++)"QLightDM::Greeter::osVersionId() const@Base" 1.21.3
+ (c++)"QLightDM::Greeter::osPrettyName() const@Base" 1.21.3
+ (c++)"QLightDM::Greeter::hideUsersHint() const@Base" 1.21.3
+ (c++)"QLightDM::Greeter::selectUserHint() const@Base" 1.21.3
+ (c++)"QLightDM::Greeter::isAuthenticated() const@Base" 1.21.3
+ (c++)"QLightDM::Greeter::selectGuestHint() const@Base" 1.21.3
+ (c++)"QLightDM::Greeter::inAuthentication() const@Base" 1.21.3
+ (c++)"QLightDM::Greeter::autologinSessionHint() const@Base" 1.25.0
+ (c++)"QLightDM::Greeter::autologinUserHint() const@Base" 1.21.3
+ (c++)"QLightDM::Greeter::authenticationUser() const@Base" 1.21.3
+ (c++)"QLightDM::Greeter::autologinGuestHint() const@Base" 1.21.3
+ (c++)"QLightDM::Greeter::defaultSessionHint() const@Base" 1.21.3
+ (c++)"QLightDM::Greeter::hasGuestAccountHint() const@Base" 1.21.3
+ (c++)"QLightDM::Greeter::showManualLoginHint() const@Base" 1.21.3
+ (c++)"QLightDM::Greeter::showRemoteLoginHint() const@Base" 1.21.3
+ (c++)"QLightDM::Greeter::autologinTimeoutHint() const@Base" 1.21.3
+ (c++)"QLightDM::Greeter::motd() const@Base" 1.21.3
+ (c++)"QLightDM::Greeter::osId() const@Base" 1.21.3
+ (c++)"QLightDM::Greeter::osName() const@Base" 1.21.3
+ (c++)"QLightDM::Greeter::getHint(QString const&) const@Base" 1.21.3
+ (c++)"QLightDM::Greeter::hostname() const@Base" 1.21.3
+ (c++)"QLightDM::Greeter::lockHint() const@Base" 1.21.3
+ (c++)"QLightDM::Greeter::osVersion() const@Base" 1.21.3

debian/liblightdm-qt6-3-dev.install

@@ -0,0 +1,3 @@
+usr/include/lightdm-qt6-*
+usr/lib/*/pkgconfig/liblightdm-qt6-*.pc
+usr/lib/*/liblightdm-qt6-*.so

liblightdm-qt/Makefile.am

@@ -4,6 +4,9 @@ common_libadd = \
 liblightdm_qt5_3_la_LIBADD = \
 	$(LIBLIGHTDM_QT5_LIBS) \
 	$(common_libadd)
+liblightdm_qt6_3_la_LIBADD = \
+    $(LIBLIGHTDM_QT6_LIBS) \
+    $(common_libadd)
 
 common_cflags = \
 	$(WARN_CXXFLAGS) \
@@ -15,6 +18,11 @@ liblightdm_qt5_3_la_CXXFLAGS = \
 	-DQT_DISABLE_DEPRECATED_BEFORE="QT_VERSION_CHECK(4, 0, 0)" \
 	$(LIBLIGHTDM_QT5_CFLAGS) \
 	$(common_cflags)
+liblightdm_qt6_3_la_CXXFLAGS = \
+	-fPIC \
+	-DQT_DISABLE_DEPRECATED_BEFORE="QT_VERSION_CHECK(5, 0, 0)" \
+	$(LIBLIGHTDM_QT6_CFLAGS) \
+	$(common_cflags)
 
 common_headers = \
 	QLightDM/Greeter \
@@ -27,6 +35,7 @@ common_headers = \
 	QLightDM/usersmodel.h
 
 liblightdm_qt5_3includedir=$(includedir)/lightdm-qt5-3/QLightDM
+liblightdm_qt6_3includedir=$(includedir)/lightdm-qt6-3/QLightDM
 
 common_sources = \
 	greeter.cpp \
@@ -36,6 +45,9 @@ common_sources = \
 liblightdm_qt5_3_la_SOURCES = \
 	$(common_sources) \
 	$(liblightdm_qt5_3include_HEADERS)
+liblightdm_qt6_3_la_SOURCES = \
+	$(common_sources) \
+	$(liblightdm_qt6_3include_HEADERS)
 
 pkgconfigdir = $(libdir)/pkgconfig
 
@@ -56,9 +68,22 @@ BUILT_SOURCES += $(common_sources:.cpp=_moc5.cpp)
 pkgconfig_DATA += liblightdm-qt5-3.pc
 endif
 
+if COMPILE_LIBLIGHTDM_QT6
+lib_LTLIBRARIES += liblightdm-qt6-3.la
+liblightdm_qt6_3include_HEADERS = $(common_headers)
+BUILT_SOURCES += $(common_sources:.cpp=_moc6.cpp)
+pkgconfig_DATA += liblightdm-qt6-3.pc
+endif
+
 # Support pretty printing MOC
 AM_V_MOC5 = $(am__v_MOC5_$(V))
 am__v_MOC5_ = $(am__v_MOC5_$(AM_DEFAULT_VERBOSITY))
 am__v_MOC5_0 = @echo "  MOC5    " $@;
 %_moc5.cpp: QLightDM/%.h
 	$(AM_V_MOC5) $(MOC5) $< -o $@
+
+AM_V_MOC6 = $(am__v_MOC6_$(V))
+am__v_MOC6_ = $(am__v_MOC6_$(AM_DEFAULT_VERBOSITY))
+am__v_MOC6_0 = @echo "  MOC6    " $@;
+%_moc6.cpp: QLightDM/%.h
+	$(AM_V_MOC6) $(MOC6) $< -o $@

liblightdm-qt/greeter.cpp

@@ -328,8 +328,8 @@ QString Greeter::motd() const
     return QString::fromUtf8(lightdm_get_motd());
 }
 
-#if QT_VERSION >= QT_VERSION_CHECK(5, 0, 0)
-#include "greeter_moc5.cpp"
+#if QT_VERSION >= QT_VERSION_CHECK(6, 0, 0)
+#include "greeter_moc6.cpp"
 #else
-#include "greeter_moc4.cpp"
+#include "greeter_moc5.cpp"
 #endif

liblightdm-qt/liblightdm-qt6-3.pc.in

@@ -0,0 +1,11 @@
+prefix=@prefix@
+exec_prefix=@exec_prefix@
+libdir=@libdir@
+includedir=@includedir@
+
+Name: liblightdm-qt6
+Description: LightDM Qt6 client library
+Version: @VERSION@
+Requires: Qt6Core Qt6Gui
+Libs: -L${libdir} -llightdm-qt6-3
+Cflags: -I${includedir}/lightdm-qt6-3

liblightdm-qt/power.cpp

@@ -78,8 +78,8 @@ bool PowerInterface::restart()
     return lightdm_restart (NULL);
 }
 
-#if QT_VERSION >= QT_VERSION_CHECK(5, 0, 0)
-#include "power_moc5.cpp"
+#if QT_VERSION >= QT_VERSION_CHECK(6, 0, 0)
+#include "power_moc6.cpp"
 #else
-#include "power_moc4.cpp"
+#include "power_moc5.cpp"
 #endif

liblightdm-qt/sessionsmodel.cpp

@@ -151,8 +151,8 @@ QVariant SessionsModel::data(const QModelIndex &index, int role) const
     return QVariant();
 }
 
-#if QT_VERSION >= QT_VERSION_CHECK(5, 0, 0)
-#include "sessionsmodel_moc5.cpp"
+#if QT_VERSION >= QT_VERSION_CHECK(6, 0, 0)
+#include "sessionsmodel_moc6.cpp"
 #else
-#include "sessionsmodel_moc4.cpp"
+#include "sessionsmodel_moc5.cpp"
 #endif

liblightdm-qt/usersmodel.cpp

@@ -263,8 +263,8 @@ QVariant UsersModel::data(const QModelIndex &index, int role) const
 }
 
 
-#if QT_VERSION >= QT_VERSION_CHECK(5, 0, 0)
-#include "usersmodel_moc5.cpp"
+#if QT_VERSION >= QT_VERSION_CHECK(6, 0, 0)
+#include "usersmodel_moc6.cpp"
 #else
-#include "usersmodel_moc4.cpp"
+#include "usersmodel_moc5.cpp"
 #endif

m4/qt-validate-moc.m4

@@ -0,0 +1,33 @@
+dnl Qt6
+AC_DEFUN([QT6_IF_QT6_MOC],
+    AS_IF([$1 -v >/dev/null 2>/dev/null &&
+        (test "`$1 -v 2<&1 | grep -o 'Qt [[[0-9]]]\+'`" = "Qt 6" ||
+         test "`$1 -v 2<&1 | grep -o 'moc [[[0-9]]]\+'`" = "moc 6" ||
+         test "`$1 -v 2<&1 | grep -o 'moc-qt[[[0-9]]]\+'`" = "moc-qt6")],
+        [$2]))
+
+dnl Set MOCCMD to $1 if it is the Qt 6 "moc".
+AC_DEFUN([QT6_TRY_MOC],
+    [QT6_IF_QT6_MOC([$1], [MOCCMD="$1"])])
+
+dnl If a usable moc command is found set $1
+AC_DEFUN([QT6_VALIDATE_MOC], [
+    AC_MSG_CHECKING([the Qt 6 moc command])
+    dnl Try to find a Qt 6 'moc'
+    AS_IF([test "x$MOCCMD" = "x"],
+        [for mocpath in "moc" "qtchooser -run-tool=moc -qt=6" "moc-qt6" \
+                        "/usr/lib/qt6/moc" "/usr/lib/qt6/libexec/moc" \
+                        "/usr/lib64/qt6/moc" "/usr/lib64/qt6/libexec/moc" \
+                        "$prefix/lib/qt6/moc" "$prefix/lib/qt6/libexec/moc" \
+                        "$libexecdir/moc" "$libexecdir/qt6/moc" \
+                        "$libdir/qt6/moc" "$libdir/qt6/libexec/moc"
+        do
+            if test "x$MOCCMD" = "x" ; then
+                QT6_TRY_MOC([$mocpath])
+            fi
+        done
+        AS_IF([test "x$MOCCMD" = "x"],
+            [AC_MSG_RESULT([not found]); AC_SUBST($1,"")],
+            [AC_MSG_RESULT([$MOCCMD]); AC_SUBST($1,"$MOCCMD")])
+        MOCCMD=""],
+        [AC_MSG_ERROR(["MOCCMD should not be set"])])])