如何在构建目录中使用CMake文件（GLOB SRCS *。） [英] how to use CMake file (GLOB SRCS *. ) with a build directory

问题描述

这是我当前的CMakeLists.txt文件

this is my current CMakeLists.txt file

cmake_minimum_required(VERSION 3.3)
set(CMAKE_C_FLAGS " -Wall -g ")
project( bmi )
file( GLOB SRCS *.cpp *.h )
add_executable( bmi ${SRCS}) 

这是从我的源目录构建的，但是之后我必须清理所有多余的文件。我的问题是，如果我所有的源文件都在同一源目录中，该如何从构建目录中构建此文件？

This builds from my source directory, but I have to clean up all the extra files after. My question is how do I build this from a build directory if all my source files are in the same source directory?

谢谢

推荐答案

如果您确实需要使用file（GLOB …），此CMakeLists.txt应该可以正常工作：

If you really need to use file(GLOB …), this CMakeLists.txt should work :

cmake_minimum_required(VERSION 3.3)
project(bmi)
add_definitions("-Wall" "-g")
include_directories(${PROJECT_SOURCE_DIR})
file(GLOB SRC_FILES ${PROJECT_SOURCE_DIR}/*.cpp)
add_executable(bmi ${SRC_FILES})

在这种情况下，每次添加或删除文件时，都必须从构建目录中启动cmake。源文件：

In this case you have to launch cmake from your build directory every time you add or delete a source file :

cmake <your_source_dir> -G <your_build_generator>

正如Phil提醒的那样，CMake文档不建议这种GLOB用法。但是也有一些例外。您将在此帖子中获得更多信息。

As Phil reminds, CMake documentation doesn't recommend this use of GLOB. But there are some exceptions. You'll get more information on this post.

如果您没有遇到这些例外，则宁愿列出您的源文件，也不愿使用GLOB：

If you don't meet those exceptions, you'd rather list your source files than use GLOB :

set(SRC_FILES ${PROJECT_SOURCE_DIR}/main.cpp
              ${PROJECT_SOURCE_DIR}/bmi.cpp
              … )

NB：如果您将.h文件包含在.cpp文件中，那么我看不出有任何理由将它们放入add_executable中，需要使用include_directories指定包含目录。

NB : if you have #include of your .h files in .cpp files, I don't see any reason to put them in add_executable, you just need to specify include directory with include_directories.

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