对具有子/外部项目/依赖项的项目使用cmake [英] Using cmake for a project with sub/external projects/dependencies

问题描述

我实际上正在通过一个使用 PocoProject 作为提供框架的项目来提高我的c ++技能一个简单的rest网络服务器和json解析以及mongodb驱动程序.

I am actually imroving my c++ skills with a project that uses PocoProject as a framework for supplying a simple rest webserver and json parsing as well as a mongodb driver.

我正在使用cmake/make编译项目

I am compiling my project with cmake/make

我的目录结构是:

root
 - pocoproject
 - helloworld.cpp
 - CMakeLists.txt

要测试cmake，我有一个简单的cpp文件(取自poco示例)，它启动一个http服务器.包括以下内容:

To test cmake, I have a simple cpp file (taken from the poco examples) that starts a http-server. the includes are the following:

#include "Poco/Net/HTTPServer.h"
#include "Poco/Net/HTTPRequestHandler.h"
...
#include "Poco/Util/HelpFormatter.h"
#include <iostream>

我的CMakeLists.txt如下:

My CMakeLists.txt look like:

cmake_minimum_required (VERSION 2.6)
project (Hello)
add_executable(Hello helloworld.cpp)

问题:

如何将所需的库从pocoproject添加到我的可执行文件中?如何正确引用标题?

Question:

How do I add the needed libraries from pocoproject to to my executable? How do I reference the headers correctly?

推荐答案

您需要让CMake项目知道从哪里查找依赖项，例如Poco.您需要设置变量 CMAKE_PREFIX_PATH .可以使用 cmake-gui 或在命令行上完成:

You need let your CMake project know where to look for the dependencies, such as Poco. You need to set the variable CMAKE_PREFIX_PATH. It can be done with cmake-gui or on the command line:

cmake ... -DCMAKE_PREFIX_PATH=<path> ...

< path> 是您复制或安装Poco库的位置，因此Poco标头中的路径将类似于< path>/include/Poco/AbstractCache.h 等...，像< path>/lib/libPocoFoundation.* 之类的库，最重要的是，必须在< path>/lib/cmake中找到配置模块/Poco/PocoConfig.cmake.

The <path> is where you copied or installed the Poco library, so the Poco headers will have paths like <path>/include/Poco/AbstractCache.h, etc..., libraries like <path>/lib/libPocoFoundation.* and most importantly, the config-module must be found at <path>/lib/cmake/Poco/PocoConfig.cmake.

在您的 CMakeLists.txt 中，您需要使用以下内容找到Poco软件包:

In your CMakeLists.txt you need to find the Poco package with

find_package(Poco REQUIRED Foundation Util Net)

并使用

target_link_libraries(Hello Poco::Foundation Poco::Util Poco::Net)

这篇关于对具有子/外部项目/依赖项的项目使用cmake的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！