c++ - Cmake 和 QT5 - Include 只接受一个参数

Question

来自这个主题: Ubuntu CMake what path to add to CMAKE_MODULE_PATH

我尝试在我的项目中运行 QT5，因为 QT4 不允许我包含 QWebView。

按照上述主题的指南，我现在有一个 CMakeList.txt:

cmake_minimum_required (VERSION 2.6 FATAL_ERROR)
project (simpleTree)
find_package(Qt5 REQUIRED COMPONENTS Widgets Core) 
find_package (VTK REQUIRED)
find_package (PCL 1.8.0 REQUIRED)

include_directories (${PCL_INCLUDE_DIRS})
link_directories (${PCL_LIBRARY_DIRS})
add_definitions (${PCL_DEFINITIONS})

set (project_SOURCES export/exportply.cpp export/writecsv.cpp main.cpp
         controller.cpp 
         gui/pclviewer.cpp
         import/importpcd.cpp 
         method/SphereFollowing.cpp 
         Model/crown.cpp 
         Model/Cylinder.cpp 
         Model/Segment.cpp 
         Model/Tree.cpp)
set (project_HEADERS controller.h 
         export/writecsv.h
         export/exportply.h
         gui/pclviewer.h
         import/importpcd.h 
         method/SphereFollowing.h 
         Model/crown.h 
         Model/Cylinder.h 
         Model/Segment.h 
         Model/Tree.h)
set (project_FORMS   gui/pclviewer.ui)
set (VTK_LIBRARIES vtkRendering vtkGraphics vtkHybrid QVTK)

QT5_WRAP_CPP (project_HEADERS_MOC   ${project_HEADERS})
QT5_WRAP_UI  (project_FORMS_HEADERS ${project_FORMS})

INCLUDE (${QT_USE_FILE})
ADD_DEFINITIONS (${QT_DEFINITIONS})
ADD_EXECUTABLE (simpleTree ${project_SOURCES}
               ${project_FORMS_HEADERS}
               ${project_HEADERS_MOC})

TARGET_LINK_LIBRARIES (simpleTree ${QT_LIBRARIES} ${PCL_LIBRARIES}       ${VTK_LIBRARIES})

将 QT4 线路切换到 QT5 后出现以下错误:

CMake Error at CMakeLists.txt:36 (INCLUDE):
include called with wrong number of arguments.  Include only takes one
file.

所以这告诉我变量 QT_USE_FILE 现在是一个列表，而以前不是。不确定这是否正确，也不确定我能做什么。

谢谢简

Answer 1

CMake Error at CMakeLists.txt:36 (INCLUDE):
include called with wrong number of arguments.  Include only takes one
file.

这意味着变量QT_USE_FILE是空的。

在带有 Qt5 的 CMake 中，您应该使用宏 qt5_use_modules而不是 QT_USE_FILE 和 QT_LIBRARIES。

因此，在您的 CMakeLists.txt 中，您需要删除以下行:
包含(${QT_USE_FILE})
换行:
TARGET_LINK_LIBRARIES(simpleTree ${QT_LIBRARIES} ${PCL_LIBRARIES} ${VTK_LIBRARIES})
在:
TARGET_LINK_LIBRARIES(简单树 ${PCL_LIBRARIES} ${VTK_LIBRARIES})
并添加行:
qt5_use_modules(simpleTree 小部件)

更新:
现在，不推荐使用 qt5_use_modules，应该改用 target_link_libraries simpleTree Qt5::Widgets(另见 this answer)。