cpp,qt: Remove C++ and Qt bindings

* README: Update.
* configure.ac: Remove checks, variables and file generations related to
the C++/Qt bindings. Remove cpp and qt* from available_languages and
default_languages.
* lang/Makefile.am (DIST_SUBDIRS): Remove cpp and qt.
* lang/cpp, lang/qt: Remove.
* m4/ax_check_compile_flag.m4, m4/ax_cxx_compile_stdcxx.m4,
m4/ax_gcc_func_attribute.m4, m4/pkg.m4, m4/qt5.m4, m4/qt6.m4: Remove.
--

The C++ and Qt bindings have been moved to separate Git repositories:
gpgmepp and gpgmeqt.

GnuPG-bug-id: 7262

1 files changed, 0 insertions, 158 deletions

diff --git a/lang/cpp/src/eventloopinteractor.h b/lang/cpp/src/eventloopinteractor.h
deleted file mode 100644
index 79f6b632..00000000
--- a/lang/cpp/src/eventloopinteractor.h
+++ /dev/null
@@ -1,158 +0,0 @@
-/*
-  eventloopinteractor.h
-  Copyright (C) 2003,2004 Klarälvdalens Datakonsult AB
-  2016 Bundesamt für Sicherheit in der Informationstechnik
-  Software engineering by Intevation GmbH
-
-  This file is part of GPGME++.
-
-  GPGME++ is free software; you can redistribute it and/or
-  modify it under the terms of the GNU Library General Public
-  License as published by the Free Software Foundation; either
-  version 2 of the License, or (at your option) any later version.
-
-  GPGME++ is distributed in the hope that it will be useful,
-  but WITHOUT ANY WARRANTY; without even the implied warranty of
-  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-  GNU Library General Public License for more details.
-
-  You should have received a copy of the GNU Library General Public License
-  along with GPGME++; see the file COPYING.LIB.  If not, write to the
-  Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
-  Boston, MA 02110-1301, USA.
-*/
-
-// -*- c++ -*-
-#ifndef __GPGMEPP_EVENTLOOPINTERACTOR_H__
-#define __GPGMEPP_EVENTLOOPINTERACTOR_H__
-
-#include "gpgmepp_export.h"
-
-namespace GpgME
-{
-
-class Context;
-class Error;
-class TrustItem;
-class Key;
-
-/*! \file eventloopinteractor.h
-    \brief Abstract base class for gpgme's external event loop support
-
-    This class does most of the work involved with hooking GpgME++
-    up with external event loops, such as the GTK or Qt ones.
-
-    It actually provides two interfaces: An interface to the gpgme
-    IO Callback handling and one for gpgme events. The IO Callback
-    interface consists of the three methods \c actOn(), \c
-    registerWatcher() and \c unregisterWatcher(). The event
-    interface consists of the three methods \c nextTrustItemEvent(),
-    \c nextKeyEvent() and \c operationDoneEvent().
-
-    \sect General Usage
-
-    \c EventLoopInteractor is designed to be used as a
-    singleton. However, in order to make any use of it, you have to
-    subclass it and reimplement it's pure virtual methods (see
-    below). We suggest you keep the constructor protected and
-    provide a static \c instance() method that returns the single
-    instance. Alternatively, you can create an instance on the
-    stack, e.g. in \c main().
-
-    If you want \c EventLoopInteractor to manage a particular \c
-    Context, just call \c manage() on the \c Context. OTOH, if you
-    want to disable IO callbacks for a \c Context, use \c unmanage().
-
-    \sect IO Callback Interface
-
-    One part of this interface is represented by \c
-    registerWatcher() and \c unregisterWatcher(), both of which are
-    pure virtual. \c registerWatcher() should do anything necessary
-    to hook up watching of file descriptor \c fd for reading (\c dir
-    = \c Read) or writing (\c dir = Write) to the event loop you use
-    and return a tag identifying that particular watching process
-    uniquely. This could be the index into an array of objects you
-    use for that purpose or the address of such an object. E.g. in
-    Qt, you'd essentially just create a new \c QSocketNotifier:
-
-    \verbatim
-    void * registerWatcher( int fd, Direction dir ) {
-      return new QSocketNotifier( fd, dir == Read ? QSocketNotifier::Read : QSocketNotifier::Write );
-      // misses connecting to the activated() signal...
-    }
-    \endverbatim
-
-    which uses the address of the created object as unique tag. The
-    tag returned by \c registerWatcher is stored by \c
-    EventLoopInteractor and passed as argument to \c
-    unregisterWatcher(). So, in the picture above, you'd implement \c
-    unregisterWatcher() like this:
-
-    \verbatim
-    void unregisterWatcher( void * tag ) {
-      delete static_cast<QSocketNotifier*>( tag );
-    }
-    \endverbatim
-
-    The other part of the IO callback interface is \c actOn(), which
-    you should call if you receive notification from your event loop
-    about activity on file descriptor \c fd in direction \c dir. In
-    the picture above, you'd call this from the slot connected to
-    the socket notifier's \c activated() signal.
-
-    \note \c registerWatcher() as well as \c unregisterWatcher() may
-    be called from within \c actOn(), so be careful with
-    e.g. locking in threaded environments and keep in mind that the
-    object you used to find the \c fd and \c dir fo the \c actOn()
-    call might be deleted when \c actOn() returns!
-
-    \sect Event Handler Interface
-
-*/
-class GPGMEPP_EXPORT EventLoopInteractor
-{
-protected:
-    EventLoopInteractor();
-public:
-    virtual ~EventLoopInteractor();
-
-    static EventLoopInteractor *instance()
-    {
-        return mSelf;
-    }
-
-    void manage(Context *context);
-    void unmanage(Context *context);
-
-    enum Direction { Read, Write };
-protected:
-    //
-    // IO Notification Interface
-    //
-
-    /** Call this if your event loop detected activity on file
-        descriptor fd, with direction dir */
-    void actOn(int fd, Direction dir);
-
-    virtual void *registerWatcher(int fd, Direction dir, bool &ok) = 0;
-    virtual void unregisterWatcher(void *tag) = 0;
-
-    //
-    // Event Handler Interface
-    //
-
-    virtual void operationStartEvent(Context *context) = 0;
-    virtual void nextTrustItemEvent(Context *context, const TrustItem &item) = 0;
-    virtual void nextKeyEvent(Context *context, const Key &key) = 0;
-    virtual void operationDoneEvent(Context *context, const Error &e) = 0;
-
-private:
-    class Private;
-    friend class Private;
-    Private *const d;
-    static EventLoopInteractor *mSelf;
-};
-
-}
-
-#endif // __GPGMEPP_EVENTLOOPINTERACTOR_H__