【调试解决方案】Note: No relevant classes found. No output generated. && QVTKWidget添加Q_OBJECT出现错误

错误场景

在VS2017+Qt5.12.0环境中调用PCL,类PclVisualizer继承自类QMainWindow,在类PclVisualizer中添加了QVTKWidget之后,只要添加Q_OBJECT就会出现编译错误。

错误提示

1.编译过程输出

PclVisualizer.h(0): Note: No relevant classes found. No output generated.

2.编译后报错

1>PclVisualizer.obj : error LNK2001: 无法解析的外部符号 "public: virtual struct QMetaObject const * __thiscall PclVisualizer::metaObject(void)const " (?metaObject@PclVisualizer@@UBEPBUQMetaObject@@XZ)
1>PclVisualizer.obj : error LNK2001: 无法解析的外部符号 “public: virtual void * __thiscall PclVisualizer::qt_metacast(char const *)” (?qt_metacast@PclVisualizer@@UAEPAXPBD@Z)
1>PclVisualizer.obj : error LNK2001: 无法解析的外部符号 “public: virtual int __thiscall PclVisualizer::qt_metacall(enum QMetaObject::Call,int,void * *)” (?qt_metacall@PclVisualizer@@UAEHW4Call@QMetaObject@@HPAPAX@Z)
1>PclVisualizer.obj : error LNK2001: 无法解析的外部符号 “public: static struct QMetaObject const MdiChild::staticMetaObject” (?staticMetaObject@MdiChild@@2UQMetaObject@@B)

错误原因

PclVisualizer所在的PclVisualizer.h文件为Unicode编码格式。而编译Qt程序时,Unicode文件格式可能会导致编译失败。因此需要将Unicode编码的文件转换为UTF-8编码格式。

解决办法:

在VS中将上述项目关闭,将Unicode编码的文件用Notepad++文本编辑软件打开,选择“编码->使用UTF-8编码”,然后重新保存文件。再次在VS中打开上述项目,发现添加Q_OBJECT后也可以成功编译、运行。

qwe@qwe-MS-Challenger-H610ITX-2LAN-V3:~/Desktop/catkin_ws$ catkin_make Base path: /home/qwe/Desktop/catkin_ws Source space: /home/qwe/Desktop/catkin_ws/src Build space: /home/qwe/Desktop/catkin_ws/build Devel space: /home/qwe/Desktop/catkin_ws/devel Install space: /home/qwe/Desktop/catkin_ws/install #### #### Running command: "make cmake_check_build_system" in "/home/qwe/Desktop/catkin_ws/build" #### #### #### Running command: "make -j12 -l12" in "/home/qwe/Desktop/catkin_ws/build" #### [ 4%] Generating ui_main_window.h Scanning dependencies of target _handmsg_generate_messages_check_deps_handtarget Scanning dependencies of target _handmsg_generate_messages_check_deps_handPosCaliData Scanning dependencies of target _handmsg_generate_messages_check_deps_igh Scanning dependencies of target std_msgs_generate_messages_py Scanning dependencies of target hand_igh_v2_node Scanning dependencies of target _handmsg_generate_messages_check_deps_handstatus [ 6%] Generating include/hand_gui_2/moc_qnode.cpp Scanning dependencies of target _handmsg_generate_messages_check_deps_HandPlanPoint [ 4%] Generating ui_lrhandform.h [ 4%] Generating qrc_images.cpp Scanning dependencies of target _handmsg_generate_messages_check_deps_tactile [ 7%] Built target std_msgs_generate_messages_py [ 7%] Generating include/hand_gui_2/moc_finger.cpp [ 9%] Generating include/hand_gui_2/moc_lrhandform.cpp [ 11%] Generating include/hand_gui_2/moc_main_window.cpp /home/qwe/Desktop/catkin_ws/src/qtros/include/hand_gui_2/finger.hpp:0: Note: No relevant classes found. No output generated. [ 12%] Building CXX object hand_igh_v2/CMakeFiles/hand_igh_v2_node.dir/src/main.cpp.o [ 12%] Built target _handmsg_generate_messages_check_deps_handstatus [ 14%] Building CXX object hand_igh_v2/CMakeFiles/hand_igh_v2_node.dir/src/pdos.cpp.o cc1plus: error: ‘-Werror=volatile’: no option -Wvolatile cc1plus: error: ‘-Werror=volatile’: no option -Wvolatile make[2]: *** [hand_igh_v2/CMakeFiles/hand_igh_v2_node.dir/build.make:76: hand_igh_v2/CMakeFiles/hand_igh_v2_node.dir/src/pdos.cpp.o] Error 1 make[2]: *** Waiting for unfinished jobs.... make[2]: *** [hand_igh_v2/CMakeFiles/hand_igh_v2_node.dir/build.make:63: hand_igh_v2/CMakeFiles/hand_igh_v2_node.dir/src/main.cpp.o] Error 1 [ 14%] Built target _handmsg_generate_messages_check_deps_tactile [ 15%] Built target _handmsg_generate_messages_check_deps_handtarget [ 15%] Building CXX object hand_igh_v2/CMakeFiles/hand_igh_v2_node.dir/src/callback.cpp.o [ 15%] Built target _handmsg_generate_messages_check_deps_igh Scanning dependencies of target std_msgs_generate_messages_nodejs cc1plus: error: ‘-Werror=volatile’: no option -Wvolatile make[2]: *** [hand_igh_v2/CMakeFiles/hand_igh_v2_node.dir/build.make:89: hand_igh_v2/CMakeFiles/hand_igh_v2_node.dir/src/callback.cpp.o] Error 1 make[1]: *** [CMakeFiles/Makefile2:940: hand_igh_v2/CMakeFiles/hand_igh_v2_node.dir/all] Error 2 make[1]: *** Waiting for unfinished jobs.... [ 15%] Built target _handmsg_generate_messages_check_deps_handPosCaliData Scanning dependencies of target std_msgs_generate_messages_eus Scanning dependencies of target std_msgs_generate_messages_cpp Scanning dependencies of target _demo_py_generate_messages_check_deps_nn [ 15%] Built target std_msgs_generate_messages_nodejs Scanning dependencies of target std_msgs_generate_messages_lisp [ 15%] Built target _handmsg_generate_messages_check_deps_HandPlanPoint [ 15%] Built target std_msgs_generate_messages_cpp [ 15%] Built target std_msgs_generate_messages_eus [ 15%] Built target std_msgs_generate_messages_lisp [ 15%] Built target _demo_py_generate_messages_check_deps_nn Scanning dependencies of target hand_gui_2 [ 17%] Building CXX object qtros/CMakeFiles/hand_gui_2.dir/src/lrhandform.cpp.o [ 19%] Building CXX object qtros/CMakeFiles/hand_gui_2.dir/src/finger.cpp.o [ 20%] Building CXX object qtros/CMakeFiles/hand_gui_2.dir/qrc_images.cpp.o [ 23%] Building CXX object qtros/CMakeFiles/hand_gui_2.dir/src/main.cpp.o [ 23%] Building CXX object qtros/CMakeFiles/hand_gui_2.dir/src/main_window.cpp.o [ 25%] Building CXX object qtros/CMakeFiles/hand_gui_2.dir/src/qnode.cpp.o [ 26%] Building CXX object qtros/CMakeFiles/hand_gui_2.dir/include/hand_gui_2/moc_finger.cpp.o [ 28%] Building CXX object qtros/CMakeFiles/hand_gui_2.dir/include/hand_gui_2/moc_lrhandform.cpp.o [ 31%] Building CXX object qtros/CMakeFiles/hand_gui_2.dir/include/hand_gui_2/moc_qnode.cpp.o [ 31%] Building CXX object qtros/CMakeFiles/hand_gui_2.dir/include/hand_gui_2/moc_main_window.cpp.o cc1plus: error: ‘-Werror=volatile’: no option -Wvolatile cc1plus: error: ‘-Werror=volatile’: no option -Wvolatile cc1plus: error: ‘-Werror=volatile’: no option -Wvolatile cc1plus: error: ‘-Werror=volatile’: no option -Wvolatile make[2]: *** [qtros/CMakeFiles/hand_gui_2.dir/build.make:119: qtros/CMakeFiles/hand_gui_2.dir/src/main.cpp.o] Error 1 make[2]: *** Waiting for unfinished jobs.... make[2]: *** [qtros/CMakeFiles/hand_gui_2.dir/build.make:93: qtros/CMakeFiles/hand_gui_2.dir/src/finger.cpp.o] Error 1 make[2]: *** [qtros/CMakeFiles/hand_gui_2.dir/build.make:132: qtros/CMakeFiles/hand_gui_2.dir/src/main_window.cpp.o] Error 1 cc1plus: error: ‘-Werror=volatile’: no option -Wvolatile make[2]: *** [qtros/CMakeFiles/hand_gui_2.dir/build.make:106: qtros/CMakeFiles/hand_gui_2.dir/src/lrhandform.cpp.o] Error 1 make[2]: *** [qtros/CMakeFiles/hand_gui_2.dir/build.make:145: qtros/CMakeFiles/hand_gui_2.dir/src/qnode.cpp.o] Error 1 cc1plus: error: ‘-Werror=volatile’: no option -Wvolatile make[2]: *** [qtros/CMakeFiles/hand_gui_2.dir/build.make:171: qtros/CMakeFiles/hand_gui_2.dir/include/hand_gui_2/moc_finger.cpp.o] Error 1 cc1plus: error: ‘-Werror=volatile’: no option -Wvolatile cc1plus: error: ‘-Werror=volatile’: no option -Wvolatile cc1plus: error: ‘-Werror=volatile’: no option -Wvolatile make[2]: *** [qtros/CMakeFiles/hand_gui_2.dir/build.make:197: qtros/CMakeFiles/hand_gui_2.dir/include/hand_gui_2/moc_main_window.cpp.o] Error 1 cc1plus: error: ‘-Werror=volatile’: no option -Wvolatile make[2]: *** [qtros/CMakeFiles/hand_gui_2.dir/build.make:158: qtros/CMakeFiles/hand_gui_2.dir/qrc_images.cpp.o] Error 1 make[2]: *** [qtros/CMakeFiles/hand_gui_2.dir/build.make:210: qtros/CMakeFiles/hand_gui_2.dir/include/hand_gui_2/moc_qnode.cpp.o] Error 1 make[2]: *** [qtros/CMakeFiles/hand_gui_2.dir/build.make:184: qtros/CMakeFiles/hand_gui_2.dir/include/hand_gui_2/moc_lrhandform.cpp.o] Error 1 make[1]: *** [CMakeFiles/Makefile2:697: qtros/CMakeFiles/hand_gui_2.dir/all] Error 2 make: *** [Makefile:141: all] Error 2 Invoking "make -j12 -l12" failed
最新发布
07-12
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