On 27 April 2013 at 08:29, Paul Johnson wrote: | I'm getting numerous errors when I try to create the RInside qtdensity example. | | This is my first experience with Qt so I suspect there's some simple | thing I'm not doing right. | | The first two fatal compilation errors I get are: | | --- | qtdensity.cpp:37:31: error: allocation of incomplete type 'QLineEdit' | QLineEdit *cmdEntry = new QLineEdit(m_cmd); | ^~~~~~~~~ | /usr/local/Qt-5.0.2/include/QtWidgets/qabstractspinbox.h:55:7: note: forward | declaration of 'QLineEdit' | class QLineEdit; | ^ | qtdensity.cpp:38:14: error: no matching member function for call to 'connect' | QObject::connect(cmdEntry, SIGNAL(textEdited(QString)), this,... | ~~~~~~~~~^~~~~~~ | /usr/local/Qt-5.0.2/include/QtCore/qobject.h:199:36: note: candidate function | not viable: cannot convert argument of incomplete type 'QLineEdit *' to | 'const QObject *' | static QMetaObject::Connection connect(const QObject *sender, const... | --- | | The fatal errors occur when processing Qt header files, so perhaps I | have a problem with my Qt installation.
Very likely. Here is what it looks like on my system. Not a line of output from the compiler even under -Wall: edd@max:~/svn/rinside/pkg/inst/examples/qt$ qmake && make g++ -c -m64 -pipe -I/usr/share/R/include -I/usr/local/lib/R/site-library/Rcpp/include -I/usr/local/lib/R/site-library/RInside/include -O2 -Wall -W -D_REENTRANT -DQT_WEBKIT -DQT_NO_DEBUG -DQT_SVG_LIB -DQT_GUI_LIB -DQT_CORE_LIB -DQT_SHARED -I/usr/share/qt4/mkspecs/linux-g++-64 -I. -I/usr/include/qt4/QtCore -I/usr/include/qt4/QtGui -I/usr/include/qt4/QtSvg -I/usr/include/qt4 -I. -o qtdensity.o qtdensity.cpp g++ -c -m64 -pipe -I/usr/share/R/include -I/usr/local/lib/R/site-library/Rcpp/include -I/usr/local/lib/R/site-library/RInside/include -O2 -Wall -W -D_REENTRANT -DQT_WEBKIT -DQT_NO_DEBUG -DQT_SVG_LIB -DQT_GUI_LIB -DQT_CORE_LIB -DQT_SHARED -I/usr/share/qt4/mkspecs/linux-g++-64 -I. -I/usr/include/qt4/QtCore -I/usr/include/qt4/QtGui -I/usr/include/qt4/QtSvg -I/usr/include/qt4 -I. -o main.o main.cpp /usr/bin/moc-qt4 -DQT_WEBKIT -DQT_NO_DEBUG -DQT_SVG_LIB -DQT_GUI_LIB -DQT_CORE_LIB -DQT_SHARED -I/usr/share/qt4/mkspecs/linux-g++-64 -I. -I/usr/include/qt4/QtCore -I/usr/include/qt4/QtGui -I/usr/include/qt4/QtSvg -I/usr/include/qt4 -I. qtdensity.h -o moc_qtdensity.cpp g++ -c -m64 -pipe -I/usr/share/R/include -I/usr/local/lib/R/site-library/Rcpp/include -I/usr/local/lib/R/site-library/RInside/include -O2 -Wall -W -D_REENTRANT -DQT_WEBKIT -DQT_NO_DEBUG -DQT_SVG_LIB -DQT_GUI_LIB -DQT_CORE_LIB -DQT_SHARED -I/usr/share/qt4/mkspecs/linux-g++-64 -I. -I/usr/include/qt4/QtCore -I/usr/include/qt4/QtGui -I/usr/include/qt4/QtSvg -I/usr/include/qt4 -I. -o moc_qtdensity.o moc_qtdensity.cpp g++ -m64 -Wl,-O1 -o qtdensity qtdensity.o main.o moc_qtdensity.o -L/usr/lib/x86_64-linux-gnu -L/usr/lib/R/lib -lR -lblas -llapack -L/usr/local/lib/R/site-library/RInside/lib -lRInside -Wl,-rpath,/usr/local/lib/R/site-library/RInside/lib -L/usr/local/lib/R/site-library/Rcpp/lib -lRcpp -Wl,-rpath,/usr/local/lib/R/site-library/Rcpp/lib -lQtSvg -lQtGui -lQtCore -lpthread edd@max:~/svn/rinside/pkg/inst/examples/qt$ On a less-standard system, you may need to do more legwork yourself. The setup is consistent with Qt practice, tested and maintained. And has worked just fine for a number of Qt 4.* releases. Dirk -- Dirk Eddelbuettel | [email protected] | http://dirk.eddelbuettel.com _______________________________________________ Rcpp-devel mailing list [email protected] https://lists.r-forge.r-project.org/cgi-bin/mailman/listinfo/rcpp-devel
