带有包含和源路径的 CMake - 基本设置

2021-12-26 00:00:00 cmake c++

我正在尝试建立一个看起来像我自己的项目的测试项目，只是为了让事情先运行起来，它看起来像这样:

I'm trying to set up a test project looking like my own project just to get things working first and it looks like this:

/MainProject/inc/main.h
/MainProject/src/main.cpp
/LibProject/inc/test.h
/LibProject/src/test.cpp

我找到了一些教程，但是当我有 inc 和 src 文件夹时，我无法找到如何设置它?CMakeLists.txt 文件看起来如何?我会在/中有一个，每个项目文件夹中有一个吗?好像我不需要在 inc 和 src 文件夹中有一个?

I've found some tutorials, but I cant find out how to set up this when I have the inc and src folder? How would the CMakeLists.txt files look? Would I have one in /, one in each of the project folders? It seems like I dont need to have one in the inc and src folders?

推荐答案

对于每个源子目录，您都需要一个 CMakeLists.txt.您的结构应如下所示:

You need a CMakeLists.txt for each source subdirectory. Your structure should look something like this:

root
|-MainProject
| |-inc
| | '-main.h
| |-src
| | |-main.cpp
| | '-CMakeLists.txt
| '-CMakeLists.txt 
|-LibProject
| |-inc
| | '-test.h
| |-src
| | |-test.cpp
| | '-CMakeLists.txt
| '-CMakeLists.txt
'-CMakeLists.txt

root/CMakeLists.txt 的内容:

project(MyProject)
add_subdirectory(MainProject)
add_subdirectory(LibProject)

LibProject/CMakeLists.txt 和 MainProject/CMakeLists.txt 的内容:

add_subdirectory(src)

LibProject/src/CMakeLists.txt的内容:

# Notice name prefix of this variable, set by CMake according
# to value given with "project()" in the root CMakeLists.txt.
include_directories(${MyProject_SOURCE_DIR}/LibProject/inc)
add_library(LibProject test.cpp)

MainProject/src/CMakeLists.txt的内容:

include_directories(${MyProject_SOURCE_DIR}/MainProject/inc)
# I assume you want to use LibProject as a library in MainProject.
include_directories(${MyProject_SOURCE_DIR}/LibProject/inc)
link_directories(${MyProject_SOURCE_DIR}/LibProject/src)
add_executable(MainProject main.cpp)
target_link_libraries(MainProject LibProject)

然后配置和构建:

$ cd root
$ mkdir build
$ cd build
$ cmake ..
$ make

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