compilation error

[iamdrfly]

I can not figure out why I am not able to compile the package. I got the following error:

error: ‘void QAbstractButton::clicked(bool)’ is protected within this context
     QObject::connect(button, &QAbstractButton::clicked, [this]() { get(); });
                                                ^~~~~~~
In file included from /usr/include/qt4/QtGui/qcheckbox.h:45:0,
                 from /usr/include/qt4/QtGui/QCheckBox:1,
                 from /home/amosca/gepetto-viewer/src/node-property.cpp:21:
/usr/include/qt4/QtGui/qabstractbutton.h:127:10: note: declared protected here
     void clicked(bool checked = false);
          ^~~~~~~
/home/amosca/gepetto-viewer/src/node-property.cpp:158:76: error: no matching function for call to ‘gepetto::viewer::VoidProperty::connect(QPushButton*&, void (QAbstractButton::*)(bool), gepetto::viewer::VoidProperty::guiEditor()::<lambda()>)’
     QObject::connect(button, &QAbstractButton::clicked, [this]() { get(); });
                                                                            ^
In file included from /usr/include/qt4/QtCore/QObject:1:0,
                 from /home/amosca/gepetto-viewer/include/gepetto/viewer/node-property.h:29,
                 from /home/amosca/gepetto-viewer/src/node-property.cpp:17:
/usr/include/qt4/QtCore/qobject.h:204:17: note: candidate: static bool QObject::connect(const QObject*, const char*, const QObject*, const char*, Qt::ConnectionType)
     static bool connect(const QObject *sender, const char *signal,
                 ^~~~~~~
/usr/include/qt4/QtCore/qobject.h:204:17: note:   candidate expects 5 arguments, 3 provided
/usr/include/qt4/QtCore/qobject.h:217:17: note: candidate: static bool QObject::connect(const QObject*, const QMetaMethod&, const QObject*, const QMetaMethod&, Qt::ConnectionType)
     static bool connect(const QObject *sender, const QMetaMethod &signal,
                 ^~~~~~~
/usr/include/qt4/QtCore/qobject.h:217:17: note:   candidate expects 5 arguments, 3 provided
/usr/include/qt4/QtCore/qobject.h:337:13: note: candidate: bool QObject::connect(const QObject*, const char*, const char*, Qt::ConnectionType) const
 inline bool QObject::connect(const QObject *asender, const char *asignal,
             ^~~~~~~
/usr/include/qt4/QtCore/qobject.h:337:13: note:   no known conversion for argument 2 from ‘void (QAbstractButton::*)(bool)’ to ‘const char*’
src/CMakeFiles/gepetto-viewer.dir/build.make:611: recipe for target 'src/CMakeFiles/gepetto-viewer.dir/node-property.cpp.o' failed
make[2]: *** [src/CMakeFiles/gepetto-viewer.dir/node-property.cpp.o] Error 1
make[2]: uscita dalla directory "/home/amosca/gepetto-viewer/build"
CMakeFiles/Makefile2:1471: recipe for target 'src/CMakeFiles/gepetto-viewer.dir/all' failed
make[1]: *** [src/CMakeFiles/gepetto-viewer.dir/all] Error 2
make[1]: uscita dalla directory "/home/amosca/gepetto-viewer/build"
Makefile:143: recipe for target 'all' failed
make: *** [all] Error 2

The output of the cmake is the following:

-- Package version (ROS package.xml): 4.12.1
-- CMake versions older than 3.12 may warn when looking to Boost components. Custom macros are used to find it.
-- The CXX compiler identification is GNU 7.5.0
-- Check for working CXX compiler: /usr/bin/c++
-- Check for working CXX compiler: /usr/bin/c++ -- works
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Detecting CXX compile features
-- Detecting CXX compile features - done
-- Found PkgConfig: /usr/bin/pkg-config (found version "0.29.1") 
-- Performing Test R-pedantic
-- Performing Test R-pedantic - Success
-- Performing Test R-Wno-long-long
-- Performing Test R-Wno-long-long - Success
-- Performing Test R-Wall
-- Performing Test R-Wall - Success
-- Performing Test R-Wextra
-- Performing Test R-Wextra - Success
-- Performing Test R-Wcast-align
-- Performing Test R-Wcast-align - Success
-- Performing Test R-Wcast-qual
-- Performing Test R-Wcast-qual - Success
-- Performing Test R-Wformat
-- Performing Test R-Wformat - Success
-- Performing Test R-Wwrite-strings
-- Performing Test R-Wwrite-strings - Success
-- Performing Test R-Wconversion
-- Performing Test R-Wconversion - Success
-- Could NOT find Doxygen (missing: DOXYGEN_EXECUTABLE) 
CMake Warning at cmake/doxygen.cmake:496 (MESSAGE):
  Failed to find Doxygen, documentation will not be generated.
Call Stack (most recent call first):
  cmake/post-project.cmake:59 (_SETUP_PROJECT_DOCUMENTATION)
  CMakeLists.txt:41 (PROJECT)

-- Default C++ standard: 201402
-- Minimal C++ standard upgraded to 11
-- C++ standard sufficient: Minimal required 11, currently defined: 14
-- openscenegraph >= 3.2 is required.
-- Checking for module 'openscenegraph>=3.2'
--   Found openscenegraph, version 3.2.3
-- Pkg-config module openscenegraph v3.2.3 has been detected with success.
-- openthreads >= 2.6 is required.
-- Checking for module 'openthreads>=2.6'
--   Found openthreads, version 3.3.1
-- Pkg-config module openthreads v3.3.1 has been detected with success.
-- openscenegraph-osgQt is required.
-- Checking for module 'openscenegraph-osgQt'
--   Found openscenegraph-osgQt, version 3.2.3
-- Pkg-config module openscenegraph-osgQt v3.2.3 has been detected with success.
-- Looking for Q_WS_X11
-- Looking for Q_WS_X11 - found
-- Looking for Q_WS_WIN
-- Looking for Q_WS_WIN - not found
-- Looking for Q_WS_QWS
-- Looking for Q_WS_QWS - not found
-- Looking for Q_WS_MAC
-- Looking for Q_WS_MAC - not found
-- Found Qt4: /usr/bin/qmake-qt4 (found version "4.8.7") 
-- qgv is optional.
-- Checking for module 'qgv'
--   No package 'qgv' found
-- Found PythonInterp: /usr/bin/python (found version "2.7.17") 
-- PythonInterp: /usr/bin/python
-- PYTHON_INCLUDE_DIRS:/usr/include/python2.7
-- PYTHON_INCLUDE_DIR:/usr/include/python2.7
-- Found PythonLibs: /usr/lib/x86_64-linux-gnu/libpython2.7.so (found version "2.7.17") 
-- PythonLibraries: /usr/lib/x86_64-linux-gnu/libpython2.7.so
-- PythonLibraryDirs: /usr/lib/x86_64-linux-gnu
-- PythonLibVersionString: 2.7.17
-- Python site lib: lib/python2.7/dist-packages
-- Could NOT find PythonQt (missing: PYTHONQT_LIBRARY PYTHONQT_INCLUDE_DIR QtAll) 
-- Boost version: 1.65.1
-- Found the following Boost libraries:
--   unit_test_framework
-- Boost version: 1.65.1
-- Found the following Boost libraries:
--   python27
-- Boost_PYTHON_LIBRARY: /usr/lib/x86_64-linux-gnu/libboost_python-py27.so
CMake Warning (dev) in CMakeLists.txt:
  A logical block opening on the line

    /home/amosca/gepetto-viewer/CMakeLists.txt:160 (IF)

  closes on the line

    /home/amosca/gepetto-viewer/CMakeLists.txt:168 (ENDIF)

  with mis-matching arguments.
This warning is for project developers.  Use -Wno-dev to suppress it.

CMake Warning at CMakeLists.txt:163 (MESSAGE):
  neither ffmpeg nor avconv have been found.

-- Skipping PythonQt settings
-- Configuring done
CMake Warning (dev) in src/CMakeLists.txt:
  Policy CMP0071 is not set: Let AUTOMOC and AUTOUIC process GENERATED files.
  Run "cmake --help-policy CMP0071" for policy details.  Use the cmake_policy
  command to set the policy and suppress this warning.

  For compatibility, CMake is excluding the GENERATED source file(s):

    "/home/amosca/gepetto-viewer/build/src/__/include/gepetto/gui/moc_action-search-bar.cxx"
    "/home/amosca/gepetto-viewer/build/src/__/include/gepetto/gui/moc_bodytreewidget.cxx"
    "/home/amosca/gepetto-viewer/build/src/__/include/gepetto/gui/dialog/moc_configuration.cxx"
    "/home/amosca/gepetto-viewer/build/src/__/include/gepetto/gui/dialog/moc_dialogloadenvironment.cxx"
    "/home/amosca/gepetto-viewer/build/src/__/include/gepetto/gui/dialog/moc_dialogloadrobot.cxx"
    "/home/amosca/gepetto-viewer/build/src/__/include/gepetto/gui/dialog/moc_pluginmanagerdialog.cxx"
    "/home/amosca/gepetto-viewer/build/src/__/include/gepetto/gui/moc_ledindicator.cxx"
    "/home/amosca/gepetto-viewer/build/src/__/include/gepetto/gui/moc_mainwindow.cxx"
    "/home/amosca/gepetto-viewer/build/src/__/include/gepetto/gui/moc_node-action.cxx"
    "/home/amosca/gepetto-viewer/build/src/__/include/gepetto/gui/moc_osgwidget.cxx"
    "/home/amosca/gepetto-viewer/build/src/__/include/gepetto/gui/moc_selection-event.cxx"
    "/home/amosca/gepetto-viewer/build/src/__/include/gepetto/gui/moc_selection-handler.cxx"
    "/home/amosca/gepetto-viewer/build/src/__/include/gepetto/gui/moc_shortcut-factory.cxx"
    "/home/amosca/gepetto-viewer/build/src/__/include/gepetto/gui/moc_tree-item.cxx"
    "/home/amosca/gepetto-viewer/build/src/__/include/gepetto/gui/moc_windows-manager.cxx"
    "/home/amosca/gepetto-viewer/build/src/qrc_images.cxx"

  from processing by AUTOMOC and AUTOUIC.  If any of the files should be
  processed, set CMP0071 to NEW.  If any of the files should not be
  processed, explicitly exclude them by setting the source file property
  SKIP_AUTOGEN:

    set_property(SOURCE file.h PROPERTY SKIP_AUTOGEN ON)

This warning is for project developers.  Use -Wno-dev to suppress it.

-- Generating done
-- Build files have been written to: /home/amosca/gepetto-viewer/build

what am i doing wrong?

[nim65s]

Hi, I'm not sure how the Qt4 support is still working or not. Could you try with Qt5 to see if this help ?

[iamdrfly]

Hi, I have tried with Qt5 and I git this error from the cmake:

-- Package version (ROS package.xml): 4.12.1 -- CMake versions older than 3.12 may warn when looking to Boost components. Custom macros are used to find it. -- Could NOT find Doxygen (missing: DOXYGEN_EXECUTABLE) CMake Warning at cmake/doxygen.cmake:496 (MESSAGE): Failed to find Doxygen, documentation will not be generated. Call Stack (most recent call first): cmake/post-project.cmake:59 (_SETUP_PROJECT_DOCUMENTATION) CMakeLists.txt:41 (PROJECT)

-- Default C++ standard: 201402 -- C++ standard sufficient: Minimal required 11, currently defined: 14 -- openscenegraph >= 3.2 is required. -- Checking for module 'openscenegraph>=3.2' -- Found openscenegraph, version 3.2.3 -- Pkg-config module openscenegraph v3.2.3 has been detected with success. -- openthreads >= 2.6 is required. -- Checking for module 'openthreads>=2.6' -- Found openthreads, version 3.3.1 -- Pkg-config module openthreads v3.3.1 has been detected with success. -- openscenegraph-osgQt is required. -- Checking for module 'openscenegraph-osgQt' -- Found openscenegraph-osgQt, version 3.2.3 -- Pkg-config module openscenegraph-osgQt v3.2.3 has been detected with success. CMake Error at /usr/share/cmake-3.10/Modules/FindQt4.cmake:1320 (message): Found unsuitable Qt version "5.9.5" from /usr/bin/qmake, this code requires Qt 4.x Call Stack (most recent call first): cmake/package-config.cmake:97 (find_package) cmake-module/qt.cmake:3 (ADD_PROJECT_DEPENDENCY) CMakeLists.txt:123 (ADD_QT_DEPENDENCY)

-- Configuring incomplete, errors occurred! See also "/home/amosca/gepetto-viewer/build/CMakeFiles/CMakeOutput.log".

[jmirabel]

Your osg version is rather old. You must first check what Qt version this OSG version supports. If it supports Qt5, make sure it was compiled with Qt5. Then, force usage of Qt5 by switching CMake option PROJECT_USE_QT4 to FALSE. For old OSG version, this variable is true by default.

[jmirabel]

Have a look at the files in cmake-modules directory to see the logic. The files are no so numerous and they are short.

[iamdrfly]

Hi guys, many thanks for your help. @jmirabel I followed your suggestion and it worked. Many thanks.