安装了两个OpenCV（有不同的版本），我不能删除过去的所有痕迹 [英] Two OpenCV's are installed (with different versions) and I can't delete all traces of the past one

问题描述

我是Linux系统的新手，但我真的需要这个项目，所以我真的需要你的帮助。

这是发生了什么：我已经有OpenCV 2.4在linux系统上，我还安装了另一个库libv4l。由于某种原因，此安装后，cmake无法找到OpenCv。所以我这次安装OpenCV 3.0，希望这是一个兼容性问题或某事。

但是，OpenCV 2.4安装在/ usr / lib默认情况下，make，make install）和OpenCV 3.0安装在/ usr / local / lib。

现在当我尝试cmake时，

 无法为目标< projectname>生成安全的运行时搜索路径。 
，因为某些目录中的文件可能与
隐式目录中的库冲突：
 ...存在于usr / lib和usr / local / lib中的文件列表
  

当我忽略警告并继续make时，我得到以下错误：

 没有规则使目标< an opencv file> 
  

my CMakeLists如下：

  cmake_minimum_required（version 2.8）
 project（camera_test）
 
 find_package（OpenCV 3.0.0）#also试过没有3.0.0 
 set CMAKE_MODULE_PATHusr / local / lib / cmake / $ {CMAKE_MODULE_PATH}）
 find_package（raspicam REQUIRED）
 target_link_libraries（camera_test $ {raspicam_LIBS}）
 target_link_libraries（camera_test $ {opencv_LIBS}）
  

我认为我的问题与以下页面相同：

删除所有已安装的OpenCV库

http ：//answers.opencv.org/question/52921/how-to-uninstall-opencv249-completely-in-ubuntu-1404/

但是在这里是最后一个catch：

我为openCV 3.0做了make uninstall，然后使用

  sudo find / -name* opencv *-exec rm {} \; 
  

并重新安装openCV 3.0

它没有解决我的问题。它仍然认为在usr / lib有文件，虽然我找不到任何文件了。

请给我建议一个解决方案，如果你能告诉我我这个东西的逻辑。我的意思是，它是如何知道有一个安装opencv在usr / lib，我离开什么跟踪？在这种情况下，我需要寻找/执行的基本文件/命令是什么。

非常感谢您的帮助。

编辑：以下是完整的CMakeLists文件：

  cmake_minimum_required（VERSION 2.8）
 project（raspicam_test）
 
 find_package（OpenCV 3.0.0）
 set（CMAKE_MODULE_PATH/ usr / local / lib / cmake / $ {CMAKE_MODULE_PATH}）
 find_package需要）
 
 IF（OpenCV_FOUND和raspicam_CV_FOUND）
 MESSAGE（状态COMPILING OPENCV TESTS）
 add_executable（simpletest_raspicam_cv simpletest_raspicam_cv.cpp）
 target_link_libraries（simpletest_raspicam_cv $ {raspicam_CV_LIBS } 
 target_link_libraries（simpletest_raspicam_cv $ {OpenCV_LIBS}）
 ELSE（）
 MESSAGE（FATAL_ERROROPENCV NOT FOUND IN YOUR SYSTEM）
 ENDIF（）
  




解决方案

可能的原因：

  sudo find / -name* opencv *-exec rm {} \; 
  

不会删除目录。但在

中有一些cmake文件

  / usr / share / opencv 
  pre> 
 
 
因此不会被删除，包含您以前的OpenCV安装的已弃用的信息。
 
 
 
如果这些文件存在于您的文件系统中？
 
I am new to Linux systems but I really need this for my project, so I really need your help.

Here is what happened: I have had OpenCV 2.4 on a linux system and I also installed another library called libv4l. For some reason after this install, cmake was unable to find OpenCv. So I installed OpenCV 3.0 this time, hoping that it was a compatibility problem or something.

However, OpenCV 2.4 was installed at /usr/lib by default (I used cmake, make, make install) and OpenCV 3.0 was installed at /usr/local/lib.

Now when I try to cmake, I get this warning:
Cannot generate a safe runtime search path for target <projectname>
because files in some directories may conflict with libraries in
implicit directories:
...list of files that exist both in usr/lib and usr/local/lib
and when I ignore the warning and proceed with make, I get the following error:
No rule to make target <an opencv file> 
my CMakeLists is as follows:
cmake_minimum_required (version 2.8)
project(camera_test)

find_package(OpenCV 3.0.0) #also tried without 3.0.0
set(CMAKE_MODULE_PATH "usr/local/lib/cmake/${CMAKE_MODULE_PATH}")
find_package(raspicam REQUIRED)
target_link_libraries (camera_test ${raspicam_LIBS})
target_link_libraries (camera_test ${opencv_LIBS})
I think my problem is the same with the following pages:

Removing all installed OpenCV libs

http://answers.opencv.org/question/52921/how-to-uninstall-opencv249-completely-in-ubuntu-1404/

However here is the final catch:

I did "make uninstall" for openCV 3.0, then used
sudo find / -name "*opencv*" -exec rm {} \;
and re installed openCV 3.0

but it did not fix my problem. It still thinks there are files at usr/lib although I cant find any files there anymore.

Please suggest me a solution, and I would really appreciate if you can tell briefly me the logic of this thing. I mean, How does it know there was an installed opencv at usr/lib, what trace did I leave? What are the essential files/commands I need to be looking for/executing in such cases.

Thanks a lot, I really appreciate your help.

Edit: Here is the complete CMakeLists file:
cmake_minimum_required (VERSION 2.8)
project (raspicam_test)

find_package(OpenCV 3.0.0)
set(CMAKE_MODULE_PATH "/usr/local/lib/cmake/${CMAKE_MODULE_PATH}")
find_package(raspicam REQUIRED)

IF ( OpenCV_FOUND AND raspicam_CV_FOUND )
    MESSAGE(STATUS "COMPILING OPENCV TESTS")
    add_executable (simpletest_raspicam_cv simpletest_raspicam_cv.cpp)
    target_link_libraries (simpletest_raspicam_cv ${raspicam_CV_LIBS} )
    target_link_libraries (simpletest_raspicam_cv ${OpenCV_LIBS})
ELSE()
    MESSAGE(FATAL_ERROR "OPENCV NOT FOUND IN YOUR SYSTEM")
ENDIF()

解决方案
Possible cause:
sudo find / -name "*opencv*" -exec rm {} \;
won't delete directories. But there are some cmake files in 
/usr/share/opencv
which would therefore not be deleted, containing deprecated infos to your previous OpenCV install.

Can you check if these files exist in your filesystem?

                        
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