c++ - Using CMake with Qt5 and Qt Plugins (Ubuntu 12.04) -


i'd avoid using qmake , .pro files. problem cannot cmake work nicely qt plugins. i've included code below showing interface, plugin, loader work correctly given .pro file cannot figure out how transfer functionality cmake.

plugin interface

pure virtual interface, known loader.

#include <qtcore/qglobal.h>  class helloplugininterface { public:     virtual void dosomething() const = 0; };  q_declare_interface( helloplugininterface, "com.harbrick.qt.helloplugininterface")

plugin

plugin becomes .so loaded loader.

#include <qtplugin> #include "helloplugin_global.h"  class helloplugin : public qobject, public helloplugininterface {     q_object     q_plugin_metadata( iid "com.harbrick.qt.helloplugininterface" )     q_interfaces( helloplugininterface )  public:     void dosomething() const; };

plugin loader

void mainwindow::loadplugin( const qstring& pathtolibrary ) {     qpluginloader loader( pathtolibrary );     qobject* instance = loader.instance();      if( instance )     {         helloplugininterface *plugin = qobject_cast< helloplugininterface* >( instance );         if(plugin)         {             //do stuff             ...         }         else         {             qdebug() << "not plugin: " << filename << " = " << loader.errorstring();         }     } }

cmakelists.txt

can't work

project( helloplugin ) cmake_minimum_required( version 2.8.11 )  set( cmake_include_current_dir on )  find_package(qt5widgets)  include_directories(      ${cmake_current_source_dir}  )  set( include     cmakeplugin.h     cmakeplugininterface.h )  set( sources     cmakeplugin.cpp )  add_executable(${project_name} ${include} ${sources} ${src_list})  add_library( cmakeplugin shared cmakeplugin.cpp )

qmake .pro

works

qt       += widgets  target = helloplugin template = lib  sources += helloplugin.cpp  headers += helloplugin.h \     helloplugin_global.h  config += plugin debug  installs += target


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