如何在ros ubuntu中改变包中的库的目录 [英] How to change directory of a library in a package in ros ubuntu

问题描述

我已经安装opencv2.4.9（没有CUDA）通过解压opencv2.4.9.zip在家里。
许多成功的代码正在使用此库。
现在我想在另一个文件夹中重建opencv2.4.9（使用CUDA）。
我不想删除以前的文件夹，因为我不想面对任何问题，使我的旧代码不能运作。

I have installed opencv2.4.9(With No CUDA) by unzip opencv2.4.9.zip in home. Many successful codes are using this library. Now I wanna rebuild opencv2.4.9(with CUDA) in another folder. I don't wanna delete the previous folder because I don't wanna face any problem later on and make my older code can't function.

，问题是如何更改目录的名称？看起来像我们将包和库中的库链接如下：

So, the question is how to change the name of the directory? Seems like we link the package with library in CMake like below:

include_directories（$ {catkin_INCLUDE_DIRS} $ {OpenCV_INCLUDE_DIRS}）

include_directories( ${catkin_INCLUDE_DIRS} ${OpenCV_INCLUDE_DIRS} )

find_package（OpenCV REQUIRED）

find_package( OpenCV REQUIRED )

find_package（catkin必需组件cv_bridge image_transport
OpenCV roscpp rospy std_msgs）

find_package(catkin REQUIRED COMPONENTS cv_bridge image_transport OpenCV roscpp rospy std_msgs )

目录的名称只是OpenCV。
所以如果我在家里有多个OpenCV库，我们如何分别链接它们？

the name of directory is just OpenCV. So if I got more than one OpenCV library in home, how could I link them separately?

如果我们可以使c ++链接到库更改名称？

And how to make c++ link to the library if we could change the name?

add_executable(xxx src/xxx.cpp)

target_link_libraries(xxx ${catkin_LIBRARIES} ${OpenCV_LIBRARIES})

推荐答案

库可以包含并链接到 include_directories（）和 link_directories（），如下所示：

Libraries can be included and linked with include_directories() and link_directories(), like this:

cmake_minimum_required(VERSION 2.4.6)
include($ENV{ROS_ROOT}/core/rosbuild/rosbuild.cmake)
...
include_directories(${PROJECT_SOURCE_DIR})

include_directories(/path/to/opencv/OpenCV-2.4.1/include)
link_directories(/path/to/opencv/OpenCV-2.4.1/lib)
...

# Set the build type.  Options are:
#  Coverage       : w/ debug symbols, w/o op ...

所以你不应该忘记链接在 CMakeLists.txt ，也许删除标准链接到你当前的OpenCV库。

So you should not forget the linking in the CMakeLists.txt and maybe remove the standard linking to your current OpenCV libs.

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