从cmake为QT5生成的MOC文件中出错_Qt_Cmake_Qt5_Moc

从cmake为QT5生成的MOC文件中出错

qt cmake

从cmake为QT5生成的MOC文件中出错,qt,cmake,qt5,moc,Qt,Cmake,Qt5,Moc,我使用 set (CMAKE_AUTOMOC ON) set(CMAKE_INCLUDE_CURRENT_DIR ON) 然后我使用 SET(SRC src/main.cpp src/video_widget_surface.cpp src/video_widget.cpp src/video_player.cpp #moc files moc/moc_video_player.cpp moc/moc_video_widget.cpp moc/moc_video_w

我使用

set (CMAKE_AUTOMOC ON)
set(CMAKE_INCLUDE_CURRENT_DIR ON)

然后我使用

SET(SRC
  src/main.cpp
  src/video_widget_surface.cpp
  src/video_widget.cpp
  src/video_player.cpp
#moc files
  moc/moc_video_player.cpp
  moc/moc_video_widget.cpp
  moc/moc_video_widget_surface.cpp

最后，我使用

add_executable(somegui ${SRC})

但我在moc文件中发现错误，如：

/other/workspace/perception/somestuff/moc/moc_video_widget.cpp:54:6: error: 'VideoWidget' has not been declared
/other/workspace/perception/somestuff/moc/moc_video_widget.cpp:62:19: error: 'VideoWidget' has not been declared
/other/workspace/perception/somestuff/moc/moc_video_widget.cpp:68:20: error: 'VideoWidget' has not been declared
/other/workspace/perception/somestuff/moc/moc_video_widget.cpp:68:46: error: non-member function 'const QMetaObject* metaObject()' cannot have cv-qualifier
/other/Qt5.0.1/5.0.1/gcc_64/include/QtCore/qobject.h: In function 'const QMetaObject* metaObject()':
/other/Qt5.0.1/5.0.1/gcc_64/include/QtCore/qobject.h:401:33: error: 'QScopedPointer<QObjectData> QObject::d_ptr' is protected
/other/workspace/perception/somestuff/moc/moc_video_widget.cpp:70:21: error: within this context
/other/Qt5.0.1/5.0.1/gcc_64/include/QtCore/qobject.h:401:33: error: invalid use of non-static data member 'QObject::d_ptr'
/other/workspace/perception/somestuff/moc/moc_video_widget.cpp:70:21: error: from this location
/other/Qt5.0.1/5.0.1/gcc_64/include/QtCore/qobject.h:401:33: error: 'QScopedPointer<QObjectData> QObject::d_ptr' is protected
/other/workspace/perception/somestuff/moc/moc_video_widget.cpp:70:50: error: within this context
/other/Qt5.0.1/5.0.1/gcc_64/include/QtCore/qobject.h:401:33: error: invalid use of non-static data member 'QObject::d_ptr'
/other/workspace/perception/somestuff/moc/moc_video_widget.cpp:70:50: error: from this location
/other/workspace/perception/somestuff/moc/moc_video_widget.cpp: At global scope:
/other/workspace/perception/somestuff/moc/moc_video_widget.cpp:73:7: error: 'VideoWidget' has not been declared
/other/workspace/perception/somestuff/moc/moc_video_widget.cpp: In function 'void* qt_metacast(const char*)':
/other/workspace/perception/somestuff/moc/moc_video_widget.cpp:77:47: error: expected type-specifier before 'VideoWidget'
/other/workspace/perception/somestuff/moc/moc_video_widget.cpp:77:47: error: expected '>' before 'VideoWidget'
/other/workspace/perception/somestuff/moc/moc_video_widget.cpp:77:47: error: expected '(' before 'VideoWidget'
/other/workspace/perception/somestuff/moc/moc_video_widget.cpp:77:47: error: 'VideoWidget' was not declared in this scope
/other/workspace/perception/somestuff/moc/moc_video_widget.cpp:77:59: error: expected primary-expression before '>' token
/other/workspace/perception/somestuff/moc/moc_video_widget.cpp:77:61: error: invalid use of 'this' in non-member function
/other/workspace/perception/somestuff/moc/moc_video_widget.cpp:77:67: error: expected ')' before ';' token
/other/workspace/perception/somestuff/moc/moc_video_widget.cpp:78:40: error: cannot call member function 'virtual void* QWidget::qt_metacast(const char*)' without object
/other/workspace/perception/somestuff/moc/moc_video_widget.cpp: At global scope:
/other/workspace/perception/somestuff/moc/moc_video_widget.cpp:81:5: error: 'VideoWidget' has not been declared
/other/workspace/perception/somestuff/moc/moc_video_widget.cpp: In function 'int qt_metacall(QMetaObject::Call, int, void**)':
/other/workspace/perception/somestuff/moc/moc_video_widget.cpp:83:43: error: cannot call member function 'virtual int QWidget::qt_metacall(QMetaObject::Call, int, void**)' without object
/other/workspace/perception/somestuff/moc/moc_video_widget.cpp: In function 'void* qt_metacast(const char*)':
/other/workspace/perception/somestuff/moc/moc_video_widget.cpp:79:1: warning: control reaches end of non-void function [-Wreturn-type]
/other/workspace/perception/somestuff/moc/moc_video_widget.cpp: In function 'const QMetaObject* metaObject()':
/other/workspace/perception/somestuff/moc/moc_video_widget.cpp:71:1: warning: control reaches end of non-void function [-Wreturn-type]
make[2]: *** [CMakeFiles/somestuff.dir/moc/moc_video_widget.cpp.o] Error 1
make[1]: *** [CMakeFiles/somestuff.dir/all] Error 2
make: *** [all] Error 2

/other/workspace/perception/somestuff/moc/moc\u video\u widget.cpp:54:6:错误：“VideoWidget”尚未声明
/其他/workspace/perception/something/moc/moc_video_widget.cpp:62:19:错误：“VideoWidget”尚未声明
/其他/workspace/perception/something/moc/moc_video_widget.cpp:68:20:错误：“VideoWidget”尚未声明
/other/workspace/perception/somestuff/moc/moc_video_widget.cpp:68:46:错误：非成员函数“const QMetaObject*metaObject（）”不能有cv限定符
/其他/Qt5.0.1/5.0.1/gcc_64/include/QtCore/qobject.h:在函数“const QMetaObject*metaObject（）”中：
/其他/Qt5.0.1/5.0.1/gcc_64/include/QtCore/qobject.h:401:33:错误：“QScopedPointer qobject:：d_ptr”受保护
/other/workspace/perception/something/moc/moc_video_widget.cpp:70:21:错误：在此上下文中
/其他/Qt5.0.1/5.0.1/gcc_64/include/QtCore/qobject.h:401:33:错误：无效使用非静态数据成员'qobject:：d_ptr'
/其他/workspace/perception/something/moc/moc_video_widget.cpp:70:21:错误：来自此位置
/其他/Qt5.0.1/5.0.1/gcc_64/include/QtCore/qobject.h:401:33:错误：“QScopedPointer qobject:：d_ptr”受保护
/other/workspace/perception/something/moc/moc_video_widget.cpp:70:50:错误：在此上下文中
/其他/Qt5.0.1/5.0.1/gcc_64/include/QtCore/qobject.h:401:33:错误：无效使用非静态数据成员'qobject:：d_ptr'
/其他/workspace/perception/something/moc/moc_video_widget.cpp:70:50:错误：来自此位置
/其他/workspace/perception/something/moc/moc_video_widget.cpp：在全球范围内：
/其他/workspace/perception/something/moc/moc_video_widget.cpp:73:7:错误：“VideoWidget”尚未声明
/other/workspace/perception/somestuff/moc/moc_video_widget.cpp:在函数“void*qt_metacast（const char*）”中：
/其他/workspace/perception/something/moc/moc_video_widget.cpp:77:47:错误：在“VideoWidget”之前需要类型说明符
/其他/workspace/perception/something/moc/moc_video_widget.cpp:77:47:错误：在“VideoWidget”之前应为“>”
/其他/workspace/perception/somestuff/moc/moc_video_widget.cpp:77:47：错误：应为“（”在“VideoWidget”之前）
/其他/workspace/perception/something/moc/moc_video_widget.cpp:77:47:错误：“VideoWidget”未在此范围内声明
/other/workspace/perception/somestuff/moc/moc_video_widget.cpp:77:59:错误：在“>”标记之前应该有主表达式
/其他/workspace/perception/something/moc/moc_video_widget.cpp:77:61:错误：在非成员函数中无效使用“this”
/other/workspace/perception/somestuff/moc/moc_video_widget.cpp:77:67:error:expected'）before'；'代币
/other/workspace/perception/something/moc/moc_video_widget.cpp:78:40:错误：无法在没有对象的情况下调用成员函数“virtual void*QWidget:：qt_metacast（const char*）”
/其他/workspace/perception/something/moc/moc_video_widget.cpp：在全球范围内：
/其他/workspace/perception/something/moc/moc_video_widget.cpp:81:5:错误：“VideoWidget”尚未声明
/other/workspace/perception/somestuff/moc/moc_video_widget.cpp：在函数“int qt_metacall（QMetaObject:：Call，int，void**）”中：
/other/workspace/perception/somestuff/moc/moc_video_widget.cpp:83:43:错误：无法在没有对象的情况下调用成员函数“virtual int QWidget:：qt_metacall（QMetaObject:：call，int，void**）”
/other/workspace/perception/somestuff/moc/moc_video_widget.cpp:在函数“void*qt_metacast（const char*）”中：
/其他/workspace/perception/something/moc/moc_video_widget.cpp:79:1：警告：控件到达非无效函数的末尾[-Wreturn类型]
/other/workspace/perception/something/moc/moc_video_widget.cpp:在函数“const QMetaObject*metaObject（）”中：
/other/workspace/perception/somestuff/moc/moc_video_widget.cpp:71:1：警告：控件到达非无效函数的末尾[-Wreturn类型]
make[2]：***[CMakeFiles/somestuff.dir/moc/moc\u video\u widget.cpp.o]错误1
make[1]：***[CMakeFiles/somestuff.dir/all]错误2
make:**[全部]错误2

我的理解是，创建的moc文件中存在一些错误。但我无法控制它是如何产生的。现在我该如何解决这个bug呢？

CMake文档并没有那么糟糕，请不要忽视阅读它。您误解了的概念：

AUTOMOC是一个布尔值，指定CMake是否自动处理Qt

moc

预处理器，即不必使用

QT4\u WRAP\u CPP（）

宏。目前支持Qt4。当此属性设置为

TRUE

时，CMake将在生成时扫描源文件，并相应地调用

moc

。如果找到像

#include“moc_foo.cpp”

这样的

#include

语句，则头文件中应包含

Q#u对象

类声明，并且在头文件上运行

moc

。如果找到像

#include“foo.moc”

这样的

#include

语句，则在当前源文件中需要一个

Q#u对象

，并在文件本身上运行

moc

。此外，所有头文件都会被解析为

Q_OBJECT

宏，如果找到，还会对这些文件执行

moc

因此，首先，您应该not将生成的

moc

文件显式添加到源代码中，并将其推入可执行编译。换句话说，您只推送您的来源：

SET(SRC
  src/main.cpp
  src/video_widget_surface.cpp
  src/video_widget.cpp
  src/video_player.cpp)

而

moc

则由CMake自动处理

第二，如文件所述：

如果
```
Q_对象
```
在
```
foo.h
```
中（即
```
QObject
```
在头文件中声明），然后在相应的
```
foo.cpp
```
不要忘记添加
```
#最好在末尾添加“moc_foo.cpp”
```
档案的完整性
如果
```
Q_对象
```
在
```
foo.cpp
```
中（即
```
QO														
```