Hi Stephen: I am addressing you directly (as well as the list) because you have been so helpful with Qt5 issues in the past.
The PLplot build system (some of whose components depend on Qt5) currently uses one of the older Qt5 support methods documented at <http://doc.qt.io/qt-5/cmake-manual.html>. But that method is complex and we are currently running into troubles with it where it uses the plain target_link_libraries command which conflicts with the keyworded version that we prefer for our build system. So I have attempted to update our Qt5 support to the latest target_link_libraries method documented at the above URL, but automoc appears not to be working correctly. I follow the advice in the above URL and set set(CMAKE_AUTOMOC ON) and also set AUTOMOC_MOC_OPTIONS to the following list: -DPLD_bmpqt;-DPLD_jpgqt;-DPLD_pngqt;-DPLD_ppmqt;-DPLD_tiffqt;-DPLD_svgqt;-DPLD_pdfqt;-DPLD_qtwidget;-DPLD_extqt;-DPLD_memqt This list is the same as I use for MOC_OPTIONS in the old working method, and these various macro definitions _must_ be defined to avoid dropping large swaths of our code from the compilation. Instead of using set(CMAKE_INCLUDE_CURRENT_DIR ON) I use instead (in the directory where the plplotqt library is built) include_directories(${CMAKE_SOURCE_DIR} ${CMAKE_BINARY_DIR} ...) Furthermore, in that same directory I use target_link_libraries(plplotqt PRIVATE plplot ${MATH_LIB} Qt5::Svg Qt5::Gui Qt5::PrintSupport) for the build. Although that build apparently works with no obvious issues, there is no sign of any of the above macros in the VERBOSE=1 output. Furthermore, I get the following near-empty result for the generated bindings/qt_gui/plplotqt_automoc.cpp file which consists just of the following two lines: /* This file is autogenerated, do not edit*/ enum some_compilers { need_more_than_nothing }; Finally, "ldd -r bindings/qt_gui/libplplotqt.st" shows missing symbols that should be defined if the above macros are defined. What am I missing? To move to a related topic, the above URL has a tutorial example for the recommended support method which builds the helloworld target from main.cpp. It would be nice for Qt5 users to learn from that tutorial example by building it themselves, but that example is incomplete since no main.cpp (presumably Qt5-related) is provided (as far as I can discover). Any chance you could provide that simple example for developers like me who don't have a lot of Qt5 or C++ expertise but who just want to build other's Qt5-related work using the best CMake-related methods? Alan __________________________ Alan W. Irwin Astronomical research affiliation with Department of Physics and Astronomy, University of Victoria (astrowww.phys.uvic.ca). Programming affiliations with the FreeEOS equation-of-state implementation for stellar interiors (freeeos.sf.net); the Time Ephemerides project (timeephem.sf.net); PLplot scientific plotting software package (plplot.sf.net); the libLASi project (unifont.org/lasi); the Loads of Linux Links project (loll.sf.net); and the Linux Brochure Project (lbproject.sf.net). __________________________ Linux-powered Science __________________________ -- Powered by www.kitware.com Please keep messages on-topic and check the CMake FAQ at: http://www.cmake.org/Wiki/CMake_FAQ Kitware offers various services to support the CMake community. For more information on each offering, please visit: CMake Support: http://cmake.org/cmake/help/support.html CMake Consulting: http://cmake.org/cmake/help/consulting.html CMake Training Courses: http://cmake.org/cmake/help/training.html Visit other Kitware open-source projects at http://www.kitware.com/opensource/opensource.html Follow this link to subscribe/unsubscribe: http://public.kitware.com/mailman/listinfo/cmake
