Note: No relevant classes found. No output generated.

本文介绍了一个Qt项目在使用Unicode格式文件时遇到的编译问题。主要表现为编译警告和链接错误,通过将文件格式从Unicode转换为ASCII解决了问题。

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Qt编译是,unicode文件格式会导致编译失败

最近编译一个Qt工程时总提示如下一个警告和链接错误。发现moc_mainwindow.cpp文件内容是空的,在命令行用moc mainwindow.h -o mainwindow.cpp提示一样,问题依旧。

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


1>mainwindow.obj : error LNK2001: 无法解析的外部符号 "public: virtual struct QMetaObject const * __thiscall MainWindow::metaObject(void)const " (?metaObject@MainWindow@@UBEPBUQMetaObject@@XZ)

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


网上搜了搜都解决不了,后来发现警告中mainwindow.h(0):后面用括号括起来的0,难道是文件第一个字节问题?于是发现了问题:

该文件是我从Qt Create工程中转换到VS2010的,后来中文就无法在QtCreate中正常显示了,于是把.h和.cpp转换成unicode格式,都能正常显示。

unicode格式文件第一二个字符是0xfeff,难道是该问题弄的?于是把文件全部转换回ascii格式。编译通过。问题解决。


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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