无法编译OpenCV代码（C ++） [英] Cannot compile OpenCV code (C++)

问题描述

好吧，所以我一直在寻找这个问题一段时间，我仍然没有如何解决它。

我试图运行此处提供的示例代码： http://docs.opencv.org/trunk/d1/dc5/tutorial_background_subtraction.html 。
我理解代码。我只是不能得到它编译！问题出在库包含。这是我的 Makefile ：

  CFLAGS =`pkg-config --cflags opencv` 
 LIBS =`pkg-config --libs opencv` 
 
％：％.cpp 
 g ++ $（CFLAGS）$（LIBS）-o $ @ $& 
  

以下是错误：

  prakhar @ inS4n3〜/ dev /性别识别$ make bs 
 g ++`pkg-config --cflags opencv``pkg-config --libs opencv` o bs bs.cpp 
 bs.cpp：2：33：fatal error：opencv2 / imgcodecs.hpp：没有这样的文件或目录
 #includeopencv2 / imgcodecs.hpp
 ^ 
编译终止。 
 Makefile：5：目标'bs'失败的食谱
 make：*** [bs]错误1 
  

如果我（暂时）注释掉这个文件，我得到类似的错误与 imgproc.hpp 。在我的 OpenCV 代码的另一个下面的编译完全：

  #includeopencv2 / core / core.hpp
 #includeopencv2 / contrib / contrib.hpp
 #includeopencv2 / highgui / highgui.hpp
  

就我所知，替换 opencv2 / core.hpp 用 opencv2 / core / core.hpp 或替换 opencv2 / imgproc.hpp opencv2 / imgproc / imgproc.hpp

$

所以我看起来更深，这是我的 opencv2 资料夹：

  prakhar @ inS4n3 / usr / include / opencv2 $ ll 
 total 84 
 drwxr-xr-x 2 root root 4096 Nov 14 19:42 calib3d 
 drwxr-xr-x 2 root root 4096 Nov 14 19:42 contrib 
 drwxr-xr-x 2 root root 4096 Nov 14 19:42核心
 drwxr-xr-x 2 root root 4096 Nov 14 19:42 features2d 
 drwxr-xr-x 2 root root 4096 Nov 14 19:42 flann 
 drwxr-xr- x 3 root root 4096 Nov 14 19:42 gpu 
 drwxr-xr-x 2 root root 4096 Nov 14 19:42 highgui 
 drwxr-xr-x 2 root root 4096 Nov 14 19:42 imgproc 
 drwxr-xr-x 2 root root 4096 Nov 14 19:42 legacy 
 drwxr-xr-x 2 root root 4096 Nov 14 19:42 ml 
 drwxr-xr-x 2 root root 4096 Nov 14 19:42 nonfree 
 drwxr-xr-x 2 root root 4096 Nov 14 19:42 objdetect 
 drwxr-xr-x 2 root root 4096 Nov 14 19:42 ocl 
 -rw -r  -  r-- 1 root root 2751 Oct 1 2014 opencv.hpp 
 -rw-r  -  r-- 1 root root 672 Nov 12 00:02 opencv_modules.hpp 
 drwxr-xr- x 2 root root 4096 Nov 14 19:42 photo 
 drwxr-xr-x 3 root root 4096 Nov 14 19:42 stitching 
 drwxr-xr-x 2 root root 4096 Nov 14 19:42 superres 
 drwxr-xr-x 2 root root 4096 Nov 14 19:42 ts 
 drwxr-xr-x 2 root root 4096 Nov 14 19:42 video 
 drwxr-xr-x 2 root root 4096 11月14日19:42 videostab 
  

任何人都能告诉我为什么会发生这种情况，我得到 imgcodecs.hpp 和 videoio.hpp 模块？
我使用 OpenCV 2.4.10-2 ，在Arch Linux上。

解决方案

好吧，在@Micka的帮助下，我终于意识到，文档是为OpenCV 3.0 beta ，而不是 2.4.10 。因此，在此中进行更改可以解决问题。

但是，我只是安装了3.0 beta版，效果不错。

这是转换指南，对我来说很难找到（仍然不知道为什么！）。 / p>

Okay, so I have been searching for this problem for a while, and I still am clueless as to how to solve it.

I am trying to run the sample code available here: http://docs.opencv.org/trunk/d1/dc5/tutorial_background_subtraction.html. I understand the code. I just cannot get it to compile! The problem is with library includes. Here's my Makefile:

CFLAGS = `pkg-config --cflags opencv`
LIBS = `pkg-config --libs opencv`

% : %.cpp
    g++ $(CFLAGS) $(LIBS) -o $@ $<

Here's the error:

prakhar@inS4n3 ~/dev/gender recognition $ make bs
g++ `pkg-config --cflags opencv` `pkg-config --libs opencv` -o bs bs.cpp
bs.cpp:2:33: fatal error: opencv2/imgcodecs.hpp: No such file or directory
 #include "opencv2/imgcodecs.hpp"
                                 ^
compilation terminated.
Makefile:5: recipe for target 'bs' failed
make: *** [bs] Error 1

If I (for the time being) comment out this file, I get a similar error with imgproc.hpp. In another of my OpenCV code, the following compiles prefectly:

#include "opencv2/core/core.hpp"
#include "opencv2/contrib/contrib.hpp"
#include "opencv2/highgui/highgui.hpp"

As far as I can tell, replacing opencv2/core.hpp with opencv2/core/core.hpp or replacing opencv2/imgproc.hpp with opencv2/imgproc/imgproc.hpp does the job.

So I looked deeper and here's my opencv2 folder:

prakhar@inS4n3 /usr/include/opencv2 $ ll
total 84
drwxr-xr-x 2 root root 4096 Nov 14 19:42 calib3d
drwxr-xr-x 2 root root 4096 Nov 14 19:42 contrib
drwxr-xr-x 2 root root 4096 Nov 14 19:42 core
drwxr-xr-x 2 root root 4096 Nov 14 19:42 features2d
drwxr-xr-x 2 root root 4096 Nov 14 19:42 flann
drwxr-xr-x 3 root root 4096 Nov 14 19:42 gpu
drwxr-xr-x 2 root root 4096 Nov 14 19:42 highgui
drwxr-xr-x 2 root root 4096 Nov 14 19:42 imgproc
drwxr-xr-x 2 root root 4096 Nov 14 19:42 legacy
drwxr-xr-x 2 root root 4096 Nov 14 19:42 ml
drwxr-xr-x 2 root root 4096 Nov 14 19:42 nonfree
drwxr-xr-x 2 root root 4096 Nov 14 19:42 objdetect
drwxr-xr-x 2 root root 4096 Nov 14 19:42 ocl
-rw-r--r-- 1 root root 2751 Oct  1  2014 opencv.hpp
-rw-r--r-- 1 root root  672 Nov 12 00:02 opencv_modules.hpp
drwxr-xr-x 2 root root 4096 Nov 14 19:42 photo
drwxr-xr-x 3 root root 4096 Nov 14 19:42 stitching
drwxr-xr-x 2 root root 4096 Nov 14 19:42 superres
drwxr-xr-x 2 root root 4096 Nov 14 19:42 ts
drwxr-xr-x 2 root root 4096 Nov 14 19:42 video
drwxr-xr-x 2 root root 4096 Nov 14 19:42 videostab

Can anyone tell me why this is happening, and how do I get the imgcodecs.hpp and videoio.hpp modules? I am using OpenCV 2.4.10-2, on Arch Linux.

解决方案

Okay, with help from @Micka, I finally realized that the doc is for OpenCV 3.0 beta, not 2.4.10. As such, making the changes in this solves the problem.

However, I simply installed the 3.0 beta, and that worked fine.

Here's the transtition guide, which for me was hard-to-find (still don't know why!).

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