使用CMAKE将两种溶液合并在一起

Combining two solutions in one using cmake

本文关键字：合并 在一起 两种 CMAKE 使用      更新时间：2023-10-16

我有两个独立的Visual Studio 2013 Solutions，我想将它们迁移到一个解决方案中，因为第一个解决方案（使用QT）是第二个解决方案的GUI。

>

最后，我想拥有一个具有这样结构的解决方案：

--Solution
-------All Build
-------Project 1
----------------External Dependencies
----------------header files
----------------Source files 
-------Project 2
----------------External Dependencies
----------------header files
----------------Source files

第一个项目的CMakeLists.txt是：

cmake_minimum_required(VERSION 2.8.5 FATAL_ERROR)
if(POLICY CMP0025)
  cmake_policy(SET CMP0025 NEW) # CMake 3.0
endif()
if(POLICY CMP0053)
  cmake_policy(SET CMP0053 NEW) # CMake 3.1
endif()
project (Project1)
set(CMAKE_MODULE_PATH 
    ${CMAKE_SOURCE_DIR}/CMake
)
find_package(VTK REQUIRED)
include(${VTK_USE_FILE})
find_package(OpenVR REQUIRED)
find_package(SDL2 REQUIRED)
include_directories(${OPENVR_INCLUDE_DIRS})
include_directories(${SDL2_INCLUDE_DIR})
include_directories(${CMAKE_SOURCE_DIR})
set(HEADER_FILES
    ...
)
set(CODE_FILES
    ...
)

# Copy the obj file to the build directory
file(COPY Data/***.*** DESTINATION ${PROJECT_BINARY_DIR}/Data)
file(COPY Data/***.*** DESTINATION ${PROJECT_BINARY_DIR}/Data)
file(COPY Data/***.*** DESTINATION ${PROJECT_BINARY_DIR}/Data)
#QT5_ADD_RESOURCES(visualization_RCS resources.qrc)
if(VTK_LIBRARIES)
add_executable(${PROJECT_NAME} ${CODE_FILES} ${HEADER_FILES})
  target_link_libraries(${PROJECT_NAME} ${VTK_LIBRARIES} ${SDL2_LIBRARY})  
else()
  message("Specific Libs")
endif()

第二个项目的CMakeLists.txt是：

cmake_minimum_required(VERSION 2.8.12)
project(Project2)
find_package(Qt5Widgets)
set(MyProjectLib_src ${PROJECT_SOURCE_DIR}/gui.cpp)
set(MyProjectLib_hdr ${PROJECT_SOURCE_DIR}/gui.h)
set(MyProjectLib_ui  ${PROJECT_SOURCE_DIR}/gui.ui)
set(MyProjectBin_src ${PROJECT_SOURCE_DIR}/main.cpp)
qt5_wrap_cpp(MyProjectLib_hdr_moc ${MyProjectLib_hdr})
qt5_wrap_ui (MyProjectLib_ui_moc  ${MyProjectLib_ui})
include_directories(${PROJECT_SOURCE_DIR})
include_directories(${PROJECT_BINARY_DIR})
add_library(MyProjectLib STATIC 
    ${MyProjectLib_src}
    ${MyProjectLib_hdr_moc}
    ${MyProjectLib_ui_moc}
)
target_link_libraries(MyProjectLib Qt5::Widgets)
add_executable(MyProject ${MyProjectBin_src})
target_link_libraries(MyProject MyProjectLib)

问题是我无法将两个CMakeLists.txt组合到一个文件中。从几天开始，我就可以按照此代码进行库存 

cmake_minimum_required(VERSION 2.8.12 FATAL_ERROR)
if(POLICY CMP0025)
  cmake_policy(SET CMP0025 NEW) # CMake 3.0
endif()
if(POLICY CMP0053)
  cmake_policy(SET CMP0053 NEW) # CMake 3.1
endif()
project (project1)
set(CMAKE_MODULE_PATH 
    ${CMAKE_SOURCE_DIR}/CMake
)
find_package(VTK REQUIRED)
include(${VTK_USE_FILE})
find_package (Qt5Widgets REQUIRED)
find_package(OpenVR REQUIRED)
find_package(SDL2 REQUIRED)
include_directories(${OPENVR_INCLUDE_DIRS})
include_directories(${SDL2_INCLUDE_DIR})
include_directories(${CMAKE_SOURCE_DIR})
set(HEADER_FILES
    GPU/header.h
    ...
    ...
)
set(CODE_FILES
    GPU/sourcefile.cxx
    ...
)

#QT5_ADD_RESOURCES(visualization_RCS resources.qrc)
project (project2)

find_package (Qt5Widgets)

set (GuiLib_src Gui/gui.cpp)
set (GuiLib_hdr Gui/gui.h)
set (GuiLib_ui  Gui/gui.ui)
set (GuiBin_src Gui/main.cpp)

qt5_wrap_cpp(GuiLib_hdr_moc ${GuiLib_hdr})
qt5_wrap_ui (GuiLib_ui_moc  ${GuiLib_ui})

include_directories (${PROJECT_SOURCE_DIR})
include_directories (${PROJECT_BINARY_DIR})

add_library (GuiLib STATIC 
    ${GuiLib_src}
    ${GuiLib_hdr_moc}
    ${GuiLib_ui_moc}
)
target_link_libraries (GuiLib Qt5::Widgets)

if(VTK_LIBRARIES)
  add_executable(${PROJECT_NAME} ${CODE_FILES} ${HEADER_FILES})
  target_link_libraries(${PROJECT_NAME} ${VTK_LIBRARIES} ${SDL2_LIBRARY})  #Qt5::Core Qt5::Gui
  add_executable(Gui ${GuiBin_src})
  target_link_libraries (Gui GuiLib)
else()
  message("Specific Libs")
endif()

值得一提的是，project1使用VTK，OpenVR和SDL，而project2仅使用QT5。

问题中最简单的解决方案是您在问题中概述的要求是在Solution/CMakeLists.txt中引入一个新的CMakelist文件：

cmake_minimum_required(VERSION 2.8.12)
project(NameForTheCombinedProject)
add_subdirectory(path/to/project1/dir)
add_subdirectory(path/to/project2/dir)

此外，您必须分别将项目中的所有引用分别更改为CMAKE_CURRENT_SOURCE_DIR和CMAKE_BINARY_DIR的CC_9和CMAKE_CURRENT_BINARY_DIR。特别是，这会影响项目1中的命令set(CMAKE_MODULE_PATH ...)和file(COPY ...)。

原因是现在CMAKE_SOURCE_DIR和CMAKE_BINARY_DIR将参考Toplevel（新创建）项目的目录。

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