Hi i've tried following the instructions from this website http://robotica.unileon.es/mediawiki/index.php/Objects_recognition_and_position_calculation_(webcam)
At the part where they asked to add this :
find_package(OpenCV "VERSION" REQUIRED)
include_directories(${OpenCV_INCLUDE_DIRS})
...
target_link_libraries("PROGRAM_NAME" ${OpenCV_LIBS})
i added and tried to build the package but it resulted in the errors:
Parse error. Expected a command name, got unquoted argument with text "...".
-- Configuring incomplete, errors occurred!
make: *** [cmake_check_build_system] Error 1
Invoking "make cmake_check_build_system" failed
Could any one please help me resolve this error?
This basically describes how you're able to add OpenCV to your own program, if you're actually using CMake.
The text in quotes has to be replaced with your actual values/project names, for example, if my target is called myopencvthing and I'd want to use OpenCV 2.0 or newer, then I'd setup something like this:
# First tell CMake the minimal version of CMake expected
cmake_minimum_required(VERSION 2.8)
# Define a project
project(myopencvproject)
# Tell CMake to look for OpenCV 2.0 (and tell it that it's required, not optional)
find_package(OpenCV 2.0 REQUIRED)
# Tell CMake to add the OpenCV include directory for the preprocessor
include_directories(${OpenCV_INCLUDE_DIRS})
# Add the source files to a variable
set(SOURCES main.cpp processing.cpp somethingelse.cpp)
# Define the actual executable target and the source files
add_executable(myopencvthing ${SOURCES})
# Finally, add the dependencies of our executable (i.e. OpenCV):
target_link_libraries(myopencvthing ${OpenCV_LIBS})
Now you'll just have to run CMake to create your actual makefiles or project files and then build everything, e.g.:
cd /my/build/dir
cmake /path/to/my/source
make
If CMake fails to find the specified dependencies, then you'll have to open the CMakeCache.txt file and edit those paths by hand (or use cmake-gui in case you prefer a more visual editor).
I think you should replace "VERSION" and "PROGRAM_NAME" with the Version number and the program name.
This is
2.4 for VERSION
and
the program name by whatever you named your executable.
Related
I try using ROS with opencv, but when I 'catkin-make', it gives me this:
CMake Error at /opt/ros/kinetic/share/catkin/cmake/catkinConfig.cmake:83 (find_package):
Could not find a package configuration file provided by "OpenCV" with any
of the following names:
OpenCVConfig.cmake
opencv-config.cmake
Add the installation prefix of "OpenCV" to CMAKE_PREFIX_PATH or set
"OpenCV_DIR" to a directory containing one of the above files. If "OpenCV"
provides a separate development package or SDK, be sure it has been
installed.
Call Stack (most recent call first):
fls_package/CMakeLists.txt:10 (find_package)
-- Configuring incomplete, errors occurred!
See also "/home/vered/catkin_ws/build/CMakeFiles/CMakeOutput.log".
See also "/home/vered/catkin_ws/build/CMakeFiles/CMakeError.log".
Makefile:318: recipe for target 'cmake_check_build_system' failed
make: *** [cmake_check_build_system] Error 1
with cmake-gui, I defined:
1. CMAKE_PREFIX_PATH = /home/vered/opencv/build (where OpenCVConfig.cmake is)
2. OpenCV_DIR = /usr/local/include/opencv4/opencv2 (where opencv.hpp is)
configured, generated and then sudo make install,
and still when catkin-make, i've got the same problem.
any ideas?
It seems that i tried all the solutions in the site, except this one:
ROS "catkin_make" cannot find OpenCVConfig.cmake
and that's what worked for me...
I wanted to use the "extra" modules, that come as opencv_contrib from here for other functions of opencv 3.0. I followed the instructions as per the page, for building and compiling the modules, but am stuck with this error
Command:
cmake -DOPENCV_EXTRA_MODULES_PATH=../opencv_contrib/modules ..
Error:
<Skipping the common Cmake statements and going straight to the error>
CMake Error at opencv_contrib/modules/adas/tools/fcw_train/CMakeLists.txt:16 (ocv_include_modules_recurse):
Unknown CMake command "ocv_include_modules_recurse".
-- Configuring incomplete, errors occurred!
I checked the CMakeLists.txt as mentioned in the path and there were other lines of code that had ocv_xxx , thus it was not a rename issue (I thought they misspelt opencv).
This is my folder structure:
Opencv
- build
- opencv_contrib
This is to verify if my CMake command was correct, as I had posted above.
Can you please tell me how to rectify this error?
UPDATE 1
As per a suggestion, I tried,by putting the opencv_contrib folder outside the opencv folder structure. The new structure was like this
-Opencv
- build
-opencv_contrib
and my new command was
cmake -DOPENCV_EXTRA_MODULES_PATH=../../opencv_contrib/modules ..
the error is still the same.
Fixed it, thanks to this question. From that question, I understood that the value of the argument should be correct, to turn on the build or something like that. So I changed my command from
cmake -DOPENCV_EXTRA_MODULES_PATH=../opencv_contrib/modules ..
to
cmake -DOPENCV_EXTRA_MODULES_PATH=opencv_contrib/modules .
Plain and simple, without hierarchy information and it worked. Cheers.
I'm trying to build project that has dependency to OpenCV. I installed Opencv using macports and when I try to build project, cmake gives the following output:
CMake Error at CMakeLists.txt:47 (FIND_PACKAGE):
By not providing "FindOpenCV.cmake" in CMAKE_MODULE_PATH this project has
asked CMake to find a package configuration file provided by "OpenCV", but
CMake did not find one.
Could not find a package configuration file provided by "OpenCV" with any
of the following names:
OpenCVConfig.cmake
opencv-config.cmake
Add the installation prefix of "OpenCV" to CMAKE_PREFIX_PATH or set
"OpenCV_DIR" to a directory containing one of the above files. If "OpenCV"
provides a separate development package or SDK, be sure it has been
installed.
I searched a little bit about this problem and added the following env. variables to my $HOME/.profile file
export DYLD_LIBRARY_PATH=/opt/local/lib:$DYLD_LIBRARY_PATH
export CMAKE_PREFIX_PATH=/opt/local
without success. I checked and I have all opencv files istalled in /opt/local/lib and /opt/local/include/opencv directories. There is also OpenCVConfig.cmake in the following path:
/opt/local/lib/cmake/OpenCVConfig.cmake
How to make cmake know the path where opencv is installed? Previously I've build OpenCV on my own using cmake and installed into /usr/local and then it worked fine without any other fix. However I had some problems with ffmpeg and right now I switched to using macports.
Another option that works for me was set the env value OpenCV_DIR at the cmake opencv dir:
export OpenCV_DIR=/opt/local/lib/cmake/
macports traditionally installs OpenCV to /opt/local/ instead of the standard /usr/local/.
The solution to your problem is stated at:
Add the installation prefix of "OpenCV" to CMAKE_PREFIX_PATH or set
"OpenCV_DIR" to a directory containing one of the above files.
When building your project in the command-line, make sure you execute:
export PKG_CONFIG_PATH=$PKG_CONFIG_PATH:/opt/local/lib/pkgconfig
export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:/opt/local/lib
And then set the flag CMAKE_PREFIX_PATH for cmake:
cmake -D CMAKE_PREFIX_PATH=/opt/local ../
Not a MACPORT problem, but someone may find this helpful. Followed #hugh-pearse 's and #leszek-hanusz 's answers in this question, with a little tweak. I had installed opencv from ubuntu 12.10 repository (libopencv-)* and had the same problem. Couldn't solve it with export OpenCV_DIR=/usr/share/OpenCV/ (since my OpenCVConfig.cmake whas there). It was solved when I changed some lines on the OpenCVConfig.cmake file:
# ======================================================
# Include directories to add to the user project:
# ======================================================
# Provide the include directories to the caller
#SET(OpenCV_INCLUDE_DIRS "${OpenCV_INSTALL_PATH}/include/opencv;${OpenCV_INSTALL_PATH}/include")
SET(OpenCV_INCLUDE_DIRS "/usr/include/opencv;/usr/include/opencv2")
INCLUDE_DIRECTORIES(${OpenCV_INCLUDE_DIRS})
# ======================================================
# Link directories to add to the user project:
# ======================================================
# Provide the libs directory anyway, it may be needed in some cases.
#SET(OpenCV_LIB_DIR "${OpenCV_INSTALL_PATH}/lib")
SET(OpenCV_LIB_DIR "/usr/lib")
LINK_DIRECTORIES(${OpenCV_LIB_DIR})
And that worked on my Ubuntu 12.10. Remember to add the target_link_libraries(yourprojectname ${OpenCV_LIBS}) in your CMakeLists.txt.
I finally read the header of the OpenCVConfig.cmake file.
It instructs to include these lines to use from an external project:
find_package(OpenCV REQUIRED)
include_directories(${OpenCV_INCLUDE_DIRS})
target_link_libraries(MY_TARGET_NAME ${OpenCV_LIBS})
(adding include_directories to CMakeLists.txt fixed it for me)
Make sure you have compiled OpenCV, once you compiled, OpenCVConfig.cmake will be generated in build directory.
follow these steps to compile
then , export OpenCV_DIR=<path to build directory with OpenCVConfig.cmake>
It should work now !
I tried all the above ideas in vain.
I eventually found a way to have the compilation work: Besides using #kengregson steps, I simply renamed the folder /usr/local/include/opencv2 so that it is not chosen when compiling my cpp file.
Since I compile my own OpenCV in a multiple-users server, so I can't install the OpenCV libs in /usr/local directly, but in my home folder instead, then exactly the same issue occurs to me.
Below is how I fix it:
Flowing the steps in OpenCV official doc: Using OpenCV with gcc and CMake
Add displayImage test program, and use this CMake file
cmake_minimum_required(VERSION 2.8)
project( DisplayImage )
find_package( OpenCV)
add_executable( DisplayImage DisplayImage.cpp )
target_link_libraries( DisplayImage ${OpenCV_LIBS} )
The same error happened, so add one environment variable in my .tcshrc
setenv OpenCV_DIR "${folder where contains OpenCVConfig.cmake }"
\# mine is:
setenv OpenCV_DIR "~/local/OpenCV2.4.13/share/OpenCV"
I wrote a CMakeLists.txt for a project in C++, which uses OpenCV libraries. When I try to create the project using cmake, I get the next configuration problem:
CMake Error at CMakeLists.txt:15 (find_package):
Could not find module FindOpenCV.cmake or a configuration file for package
OpenCV.
Adjust CMAKE_MODULE_PATH to find FindOpenCV.cmake or set OpenCV_DIR to the
directory containing a CMake configuration file for OpenCV. The file will
have one of the following names:
OpenCVConfig.cmake
opencv-config.cmake
The fact is that I have an environment variable for the path which I use in Visual Studio with no problems. If I don't include OpenCV, then I can configure and generate with no problem, but I need to solve the problem. I don't understand why cmake cannot find the OpenCV path or how to fix it.
I also used the recommendations mentioned in this link:
FindOpenCV.cmake
Does anybody had this problem too?
The error you're seeing is that CMake cannot find a FindOpenCV.cmake file, because cmake doesn't include one out of the box. Therefore you need to find one and put it where cmake can find it:
You can find a good start here. If you're feeling adventurous you can also write your own.
Then add it somewhere in your project and adjust CMAKE_MODULE_PATH so that cmake can find it.
e.g., if you have
CMakeLists.txt
cmake-modules/FindOpenCV.cmake
Then you should do a
set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} ${CMAKE_CURRENT_SOURCE_DIR}/cmake-modules)
In your CMakeLists.txt file before you do a find_package(OpenCV)
If you are on Linux, you just need to fill the OpenCV_DIR variable with the path of opencv (containing the OpenCVConfig.cmake file)
export OpenCV_DIR=<path_of_opencv>
apt-get install libopencv-dev
export OpenCV_DIR=/usr/share/OpenCV
the header of cpp file should contain:
#include
#include "opencv2/highgui/highgui.hpp"
#include
#include
not original cv.h
find / -name "OpenCVConfig.cmake"
export OpenCV_DIR=/path/found/above
I had this exact same problem. I fixed it by adding the following line to my FindOpenCV.cmake file. Put it anywhere at the top before the rest of the code.
set (OpenCV_DIR /home/cmake/opencv/compiled) #change the path to match your complied directory of opencv
Basically you are telling FindOpenCV.cmake where to find opencv files assuming the other compilation can find the FindOpenCV.cmake
I faced the same error. In my case this "OpenCVConfig.cmake" file is located in /usr/local/share/OpenCV. In CMakeLists.txt add the line
set(OpenCV_DIR /usr/local/share/OpenCV)
as suggested by the error message.
if you are on windows, you can add opencv path to OpenCV_DIR yourself.
(OpenCV_DIR is in the red region)
the path is like "D:/opencv244/build".
you can find file "OpenCVConfig.cmake" under the path.
Another possibility is to denote where you can find OpenCV_DIR in the CMakeLists.txt file. For example, the following cmake scripts work for me:
cmake_minimum_required(VERSION 2.8)
project(performance_test)
set(OpenCV_STATIC ON)
set(OpenCV_CUDA OFF)
set(OpenCV_DIR "${CMAKE_SOURCE_DIR}/../install")
find_package(OpenCV REQUIRED)
include_directories(${OpenCV_INCLUDE_DIRS})
link_directories(${OpenCV_LIB_DIR})
file(GLOB my_source_files ./src/*)
add_executable( performance_test ${my_source_files})
target_link_libraries(performance_test ${OpenCV_LIBS})
Just to remind that you should set OpenCV_STATIC and OpenCV_CUDA as well before you invoke OpenCVConfig.cmake. In my case the built library is static library that does not use CUDA.
On my Fedora machine, when I typed "make" I got an error saying it could not find "cv.h". I fixed this by modifying my "OpenCVConfig.cmake" file.
Before:
SET(OpenCV_INCLUDE_DIRS "${OpenCV_INSTALL_PATH}/include/opencv;${OpenCV_INSTALL_PATH}/include")
SET(OpenCV_LIB_DIR "${OpenCV_INSTALL_PATH}/lib64")
After:
SET(OpenCV_INCLUDE_DIRS "/usr/include/opencv;/usr/include/opencv2")
SET(OpenCV_LIB_DIR "/usr/lib64")
I am using Windows and get the same error message. I find another problem which is relevant.
I defined OpenCV_DIR in my path at the end of the line. However when I typed "path" in the command line, my OpenCV_DIR was not shown. I found because Windows probably has a limit on how long the path can be, it cut my OpenCV_DIR to be only part of what I defined. So I removed some other part of the path, now it works.
I had the same error, I use windows. I add "C:\opencv\build" (opencv folder) to path at the control pannel.
So, That's Ok!!
For me (on Ubuntu), I just run:
sudo apt-get install libopencv-dev
Followed #hugh-pearse 's and #leszek-hanusz 's answers, with a little tweak. I had installed opencv from ubuntu 12.10 repository (libopencv-)* and had the same problem. Couldn't solve it with export OpenCV_DIR=/usr/share/OpenCV/ (since my OpenCVConfig.cmake whas there). It was solved when I also changed some lines on the OpenCVConfig.cmake file:
# ======================================================
# Include directories to add to the user project:
# ======================================================
# Provide the include directories to the caller
#SET(OpenCV_INCLUDE_DIRS "${OpenCV_INSTALL_PATH}/include/opencv;${OpenCV_INSTALL_PATH}/include")
SET(OpenCV_INCLUDE_DIRS "/usr/include/opencv;/usr/include/opencv2")
INCLUDE_DIRECTORIES(${OpenCV_INCLUDE_DIRS})
# ======================================================
# Link directories to add to the user project:
# ======================================================
# Provide the libs directory anyway, it may be needed in some cases.
#SET(OpenCV_LIB_DIR "${OpenCV_INSTALL_PATH}/lib")
SET(OpenCV_LIB_DIR "/usr/lib")
LINK_DIRECTORIES(${OpenCV_LIB_DIR})
And that worked on my Ubuntu 12.10. Remember to add the target_link_libraries(yourprojectname ${OpenCV_LIBS}) in your CMakeLists.txt.
When you install the libraries in the c drive (windows). the CMakeLists.txt shoud be looking like below:
cmake_minimum_required(VERSION 3.0.0)
project(test_opencv VERSION 0.1.0)
include(CTest)
enable_testing()
find_package(OpenCV REQUIRED)
include_directories(${OpenCV_INCLUDE_DIRS})
add_executable(test_opencv main.cpp)
target_link_libraries(test_opencv ${OPENCV_LIBS})
set(CPACK_PROJECT_NAME ${PROJECT_NAME})
set(CPACK_PROJECT_VERSION ${PROJECT_VERSION})
include(CPack)
finding the package and include directories
when building the project in VS code. Run the visual studio code with admin rights as the OpenCV is installed inside C drive.
I am trying to build opencv with cmake and am running into issues.
I have downloaded the Windows opencv 2.3.1 to C:/Users/chris/opencv. I open up the CMake GUI (2.8.5 version of CMake) and put the source directory as C:/Users/chris/opencv/modules and the "Where to build the binaries" at C:/temp/opencv_binaries
I hit Configure and chose Visual Studio 2010. I then hit Configure again and get the following error output:
CMake Error at calib3d/CMakeLists.txt:1 (define_opencv_module):
Unknown CMake command "define_opencv_module".
CMake Warning (dev) in CMakeLists.txt:
No cmake_minimum_required command is present. A line of code such as
cmake_minimum_required(VERSION 2.8)
should be added at the top of the file. The version specified may be lower
if you wish to support older CMake versions for this project. For more
information run "cmake --help-policy CMP0000".
This warning is for project developers. Use -Wno-dev to suppress it.
Configuring incomplete, errors occurred!
What gives? What should I do to fix this?
Unless it has changed recently, the source directory should be C:/Users/chris/opencv/ - it will be the highest-level directory with a CMakeLists.txt file in it.
This warning is for project developers. Use -Wno-dev to suppress it.
To turn -Wno-dev on you just need to select Options -> Suppress dev Warnings (-Wno-dev) in the menu of CMake GUI.
what is the content of your CMakeLists.txt file?
for avoiding the warning, insert "cmake_minimum_required(VERSION 2.8)" into the first line of your CMakeLists.txt