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ram-lab / plycal

Extrinsic calibration of the camera and LiDAR via polygon plane
GNU General Public License v3.0
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/usr/bin/ld: cannot find -lQt5::Widgets #5

Closed Deephome closed 3 years ago

Deephome commented 3 years ago

Thank you for your great work! During compilation, I encountered the following problem:

[100%] Linking CXX executable PlyCal-qt /usr/bin/ld: cannot find -lQt5::Widgets collect2: error: ld returned 1 exit status make[2]: [PlyCal_qt/CMakeFiles/PlyCal-qt.dir/build.make:500: PlyCal_qt/PlyCal-qt] Error 1 make[1]: [CMakeFiles/Makefile2:117: PlyCal_qt/CMakeFiles/PlyCal-qt.dir/all] Error 2 make: *** [Makefile:84: all] Error 2

I have installed qt5 by apt-get or .run. But the issue cannot be fixed. what you mean about qt5 (system) in readme.md ?

liaoqinghai commented 3 years ago

May I know the Ubuntu version you tested?
I tested with Ubuntu 16.04 and it should also work with later version. Qt5 (system) means the built-in qt library of shipped with Ubuntu. For Ubuntu 16.04, the default Qt5 version is 5.5.1 For Qt and Cmake, I follow the : https://doc.qt.io/qt-5/cmake-manual.html

Deephome commented 3 years ago

@liaoqinghai Thank you for your reply. I use Ubuntu 20.04 for which the default Qt5 version is 5.12.8. In addition, I used VTK7, how about the VTK version you used? I suspect this issue is caused by VTK accoding to the following links: https://bugs.archlinux.org/task/43007 https://forum.freecadweb.org/viewtopic.php?t=15646

liaoqinghai commented 3 years ago

I adjust the cmakelist.txt and try with Ubuntu 20.04, now I can compile successfully. But it seems there is runtime problem with the GUI program.

Deephome commented 3 years ago

I adjust the cmakelist.txt and try with Ubuntu 20.04, now I can compile successfully. But it seems there is runtime problem with the GUI program. Hi, have you solved this problem?