CMake Qt UIC failed

Question

我目前正在将我的项目从qmake移植到CMake，我遇到了Qt UIC的问题，它试图处理一个不存在的UI文件，而不是我希望它处理的实际文件。

我有以下文件层次结构：

.
|___ CMakeLists.txt
|___ MyProject.pro
|___ mainwindow.ui
|___ resource.qrc
|___ source
|    |___ mainwindow.cpp
|    |___ *.cpp
|___ include
|    |___ mainwindow.h
|    |___ *.h

这是我的CMakeLists.txt：

cmake_minimum_required(VERSION 3.2)
# Project name
project(project)
# Tell CMake to compile with C++11
set(CMAKE_CXX_STANDARD 11)
# Tell CMake to run moc when needed.
set(CMAKE_AUTOMOC ON)
# Tell CMake to run uic when needed.
set(CMAKE_AUTOUIC ON)
# Tell CMake to run rcc when needed
set(CMAKE_AUTORCC ON)
# Moc generated files are located in the current dir so we need to tell CMake to look for them.
set(CMAKE_INCLUDE_CURRENT_DIR ON)
# Find Qt5
find_package(Qt5 COMPONENTS Widgets Core Gui OpenGL REQUIRED)
# Add Qt5 definitions and includes to build libraries. 
# Widgets add Widgets Core and Gui
add_definitions(${Qt5Widgets_DEFINITIONS})
include_directories(${Qt5Widgets_INCLUDES})
add_definitions(${Qt5OpenGL_DEFINITIONS})
include_directories(${Qt5OpenGL_INCLUDES})

# Find OpenGL
find_package(OpenGL REQUIRED)
# Set include directories
include_directories(${CMAKE_SOURCE_DIR}/include
    
# Use Qt5 ressources
set(RESOURCE resources.qrc)
# Use Qt5 ui
set(UI mainwindow.ui)
# Adding sources
set(SOURCES
    source/main.cpp
    source/mainwindow.cpp
    source/octree.cpp
    source/mesh.cpp
    source/pgm3d.cpp
    source/glwidget.cpp
    source/camera.cpp
    source/scene.cpp 
    source/light.cpp 
    source/obj.cpp 
    source/alignedbox3f.cpp 
    source/wireboundingbox.cpp
    include/mainwindow.h
    include/utils.h
    include/octree.h
    include/mesh.h
    include/pgm3d.h
    include/glwidget.h
    include/camera.h
    include/scene.h
    include/model3d.h
    include/light.h
    include/obj.h
    include/alignedbox3f.h
    include/wireboundingbox.h)

add_executable(${PROJECT_NAME} ${UI} ${RESOURCE} ${SOURCES} )
target_link_libraries(${PROJECT_NAME} ${Qt5Widgets_LIBRARIES} ${Qt5OpenGL_LIBRARIES} ${OPENGL_LIBRARIES})

我有以下错误：

File '/*/project/source/mainwindow.ui' is not valid
AUTOUIC: error: process for ui_mainwindow.h needed by
 "/*/project/source/mainwindow.cpp"
failed:
File '/*/project/source/mainwindow.ui' is not valid

此错误是完全合乎逻辑的，因为我的源文件夹不包含 UI 文件。我尝试包装 UI 而不是使用AUTOUIC但它也没有用。

Answer 1

目标的 AUTOUIC 属性（从创建目标时的变量CMAKE_AUTOUIC设置）定义了生成器的行为 - 启用AUTOUIC属性时 CMake 将扫描源文件以包含 UI 文件（如 #include "ui_*.h" 或 #include <ui_*.h> ），并将使用该工具自动处理uic它们。
在 CMake 3.9 中，AUTOUIC_SEARCH_PATHS添加了另一个目标属性。这里已经提出了类似的问题。

---

您的另一个选择是禁用AUTOUIC并使用具有 UI 文件完整路径的qt5_wrap_ui：

set(CMAKE_AUTOUIC OFF)
set(UI ${CMAKE_CURRENT_LIST_DIR}/mainwindow.ui)
...
qt5_wrap_ui(UI_HEADERS ${UI})
add_executable(${PROJECT_NAME} ${UI_HEADERS} ${RESOURCE} ${SOURCES} )