[CMake] Using different installs/versions of the OpenCV library
Hello list,
To compile and link my code with the OpenCV library, I use
find_package( OpenCV REQUIRED )
...
add_executable(framecountertest framecountertest.cpp)
target_link_libraries(framecountertest ${OpenCV_LIBS})
and this works just fine: the OpenCV library that got installed using my
package management system on Ubuntu 12.10 is being used.
However, under the directory /tmp/opencv_install I have another manual
installation of a more recent OpenCV library, and I would like to use
that one instead of the default on my system, or easily switch between
the two versions. How should I specify that in my CMakeLists.txt file?
I have tried
set(OpenCV_FOUND 1)
set(OpenCV_INCLUDE_DIR
/home/bart/Git/Research/fat/inc/TraficonOpenCv/opencv)
set(OpenCV_LIBS
opencv_gpu;opencv_contrib;opencv_legacy;opencv_objdetect;opencv_calib3d;opencv_features2d;opencv_video;opencv_highgui;opencv_ml;opencv_imgproc;opencv_flann;opencv_core)
include_directories(${OpenCV_INCLUDE_DIR})
...
add_executable(framecountertest framecountertest.cpp)
target_link_libraries(framecountertest ${OpenCV_LIBS})
but even with these commands, still the default libs on my system are
being used...
What is the correct way to specify that I want to build with the install
under /tmp/opencv_install ? And how can I easily switch between
versions without needing to remove one or the other version?
Thanks!
Bart
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Re: [CMake] Using different installs/versions of the OpenCV library
Have you tried specifying the version?
FIND_PACKAGE(OpenCV 2.2.0 EXACT REQUIRED)
FIND_PACKAGE(OpenCV 2.4.0 EXACT REQUIRED)
Not sure if the FindOpenCV script can handle the version argument.
Andreas
On 14.02.2013 11:42, Bart Vandewoestyne wrote:
Hello list,
To compile and link my code with the OpenCV library, I use
find_package( OpenCV REQUIRED )
...
add_executable(framecountertest framecountertest.cpp)
target_link_libraries(framecountertest ${OpenCV_LIBS})
and this works just fine: the OpenCV library that got installed using my
package management system
on Ubuntu 12.10 is being used.
However, under the directory /tmp/opencv_install I have another manual
installation of a more recent
OpenCV library, and I would like to use that one instead of the default on my
system, or easily
switch between the two versions. How should I specify that in my
CMakeLists.txt file? I have tried
set(OpenCV_FOUND 1)
set(OpenCV_INCLUDE_DIR /home/bart/Git/Research/fat/inc/TraficonOpenCv/opencv)
set(OpenCV_LIBS
opencv_gpu;opencv_contrib;opencv_legacy;opencv_objdetect;opencv_calib3d;opencv_features2d;opencv_video;opencv_highgui;opencv_ml;opencv_imgproc;opencv_flann;opencv_core)
include_directories(${OpenCV_INCLUDE_DIR})
...
add_executable(framecountertest framecountertest.cpp)
target_link_libraries(framecountertest ${OpenCV_LIBS})
but even with these commands, still the default libs on my system are being
used...
What is the correct way to specify that I want to build with the install under
/tmp/opencv_install
? And how can I easily switch between versions without needing to remove one
or the other version?
Thanks!
Bart
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Re: [CMake] Using different installs/versions of the OpenCV library
On 02/14/2013 11:47 AM, Andreas Haferburg wrote: Have you tried specifying the version? FIND_PACKAGE(OpenCV 2.2.0 EXACT REQUIRED) FIND_PACKAGE(OpenCV 2.4.0 EXACT REQUIRED) Not sure if the FindOpenCV script can handle the version argument. Andreas Doesn't seem to work. I have 2.4.3 installed under /tmp/opencv_install and I now used find_package( OpenCV 2.4.3 EXACT REQUIRED ) in my CMakeLists.txt, but I get: CMake Error at CMakeLists.txt:7 (find_package): Could not find a configuration file for package OpenCV that exactly matches requested version 2.4.3. The following configuration files were considered but not accepted: /usr/share/OpenCV/OpenCVConfig.cmake, version: 2.3.1 -- Configuring incomplete, errors occurred! Any other suggestions? It would really be nice for me to be able to easily switch between different OpenCV installs... Regards, Bart -- Powered by www.kitware.com Visit other Kitware open-source projects at http://www.kitware.com/opensource/opensource.html Please keep messages on-topic and check the CMake FAQ at: http://www.cmake.org/Wiki/CMake_FAQ Follow this link to subscribe/unsubscribe: http://www.cmake.org/mailman/listinfo/cmake
Re: [CMake] Using different installs/versions of the OpenCV library
Hi Bart. When you look into the documentation of find_package() (in its Configure mode), you'll find a list of paths and prefixes the find machanism uses. You should be able to set some of those prefixes to where your local installation of OpenCV is. Petr On Thu, Feb 14, 2013 at 12:09 PM, Bart Vandewoestyne bart.vandewoest...@telenet.be wrote: On 02/14/2013 11:47 AM, Andreas Haferburg wrote: Have you tried specifying the version? FIND_PACKAGE(OpenCV 2.2.0 EXACT REQUIRED) FIND_PACKAGE(OpenCV 2.4.0 EXACT REQUIRED) Not sure if the FindOpenCV script can handle the version argument. Andreas Doesn't seem to work. I have 2.4.3 installed under /tmp/opencv_install and I now used find_package( OpenCV 2.4.3 EXACT REQUIRED ) in my CMakeLists.txt, but I get: CMake Error at CMakeLists.txt:7 (find_package): Could not find a configuration file for package OpenCV that exactly matches requested version 2.4.3. The following configuration files were considered but not accepted: /usr/share/OpenCV/OpenCVConfig.cmake, version: 2.3.1 -- Configuring incomplete, errors occurred! Any other suggestions? It would really be nice for me to be able to easily switch between different OpenCV installs... Regards, Bart -- Powered by www.kitware.com Visit other Kitware open-source projects at http://www.kitware.com/opensource/opensource.html Please keep messages on-topic and check the CMake FAQ at: http://www.cmake.org/Wiki/CMake_FAQ Follow this link to subscribe/unsubscribe: http://www.cmake.org/mailman/listinfo/cmake -- Powered by www.kitware.com Visit other Kitware open-source projects at http://www.kitware.com/opensource/opensource.html Please keep messages on-topic and check the CMake FAQ at: http://www.cmake.org/Wiki/CMake_FAQ Follow this link to subscribe/unsubscribe: http://www.cmake.org/mailman/listinfo/cmake
Re: [CMake] Using different installs/versions of the OpenCV library
Does CMake find 2.4.3 if you remove 2.3.1? CMake probably doesn't even look in /tmp/. You could try moving it to /usr/share/OpenCV-2.4.3/. If the version arg doesn't work, I think your best bet is to use a naming convention for the library directories (or create symlinks), e.g. lib-version-arch, then use that directory in the find script. Andreas On 14.02.2013 12:09, Bart Vandewoestyne wrote: On 02/14/2013 11:47 AM, Andreas Haferburg wrote: Have you tried specifying the version? FIND_PACKAGE(OpenCV 2.2.0 EXACT REQUIRED) FIND_PACKAGE(OpenCV 2.4.0 EXACT REQUIRED) Not sure if the FindOpenCV script can handle the version argument. Andreas Doesn't seem to work. I have 2.4.3 installed under /tmp/opencv_install and I now used find_package( OpenCV 2.4.3 EXACT REQUIRED ) in my CMakeLists.txt, but I get: CMake Error at CMakeLists.txt:7 (find_package): Could not find a configuration file for package OpenCV that exactly matches requested version 2.4.3. The following configuration files were considered but not accepted: /usr/share/OpenCV/OpenCVConfig.cmake, version: 2.3.1 -- Configuring incomplete, errors occurred! Any other suggestions? It would really be nice for me to be able to easily switch between different OpenCV installs... Regards, Bart -- Powered by www.kitware.com Visit other Kitware open-source projects at http://www.kitware.com/opensource/opensource.html Please keep messages on-topic and check the CMake FAQ at: http://www.cmake.org/Wiki/CMake_FAQ Follow this link to subscribe/unsubscribe: http://www.cmake.org/mailman/listinfo/cmake -- -- Powered by www.kitware.com Visit other Kitware open-source projects at http://www.kitware.com/opensource/opensource.html Please keep messages on-topic and check the CMake FAQ at: http://www.cmake.org/Wiki/CMake_FAQ Follow this link to subscribe/unsubscribe: http://www.cmake.org/mailman/listinfo/cmake
Re: [CMake] Using different installs/versions of the OpenCV library
On 02/14/2013 12:26 PM, Andreas Haferburg wrote:
Does CMake find 2.4.3 if you remove 2.3.1? CMake probably doesn't even
look in /tmp/. You could try moving it to /usr/share/OpenCV-2.4.3/.
If the version arg doesn't work, I think your best bet is to use a
naming convention for the library directories (or create symlinks), e.g.
lib-version-arch, then use that directory in the find script.
Andreas
The link_directories() command seems to do the trick...
I'm currently at this, which seems to work:
# Change this depending on what you need.
set(USE_TMP_OPENCV TRUE)
if(USE_TMP_OPENCV)
#Manual setting: OpenCV from /tmp/opencv_install
set(OpenCV_INCLUDE_DIR /tmp/opencv_install/include/opencv)
include_directories(${OpenCV_INCLUDE_DIR})
set(OpenCV_LIBS
opencv_gpu;opencv_contrib;opencv_legacy;opencv_objdetect;opencv_calib3d;opencv_features2d;opencv_video;opencv_highgui;opencv_ml;opencv_imgproc;opencv_flann;opencv_core)
link_directories(/tmp/opencv_install/lib)
elseif(USE_FAT_OPENCV)
# Manual setting: OpenCV from FAT
set(OpenCV_INCLUDE_DIR /bla/bla/bla/opencv)
include_directories(${OpenCV_INCLUDE_DIR})
set(OpenCV_LIBS
opencv_gpu;opencv_contrib;opencv_legacy;opencv_objdetect;opencv_calib3d;opencv_features2d;opencv_video;opencv_highgui;opencv_ml;opencv_imgproc;opencv_flann;opencv_core)
link_directories(/bla/bla/bla/lib)
else()
# Automatic discovery.
find_package( OpenCV REQUIRED )
endif()
This still has the disadvantage that I have to change my CMakeLists.txt
each time I want to switch. I would like to be able to switch using
command-line arguments. I tried with cmake -d USE_TMP_OPENCV and stuff
like that, but somehow the wrong version was used if i did not specify a
-D argument (hoping for the automatic discovery). I guess I'll have to
freshen up my understanding of if-elseif-else control flow and
specifying variables on the cmake command line... tim to rtfm! ;-)
Regards,
Bart
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Re: [CMake] Using different installs/versions of the OpenCV library
On 02/14/2013 04:35 PM, Andreas Stahl wrote:
Hello Bart,
have you tried setting OpenCV_DIR before calling find_package()? I'm
basing this on http://opencv.willowgarage.com/wiki/FindOpenCV.cmake
Most package PKGFind.cmake scripts look if PKG_DIR is set to a valid
directory and look there first for all the libraries before checking
default install paths. You would use it like this:
if(USE_TMP_OPENCV)
set(OpenCV_DIR /tmp/opencv_install)
elseif(USE_FAT_OPENCV)
set(OpenCV_DIR /bla/bla/bla/opencv)
endif()
find_package(OpenCV REQUIRED)
I quickly tested this, but seems not to work. Currently, this is my
best solution:
-
# Set this to the version of OpenCV that you need.
set(OPENCV_LIB latest)
if(OPENCV_LIB STREQUAL latest)
message(STATUS Using my own compiled OpenCV.)
include_directories(/opt/opencv/latest/include/opencv)
link_directories(/opt/opencv/latest/lib)
set(OpenCV_LIBS
opencv_gpu;opencv_contrib;opencv_legacy;opencv_objdetect;opencv_calib3d;opencv_features2d;opencv_video;opencv_highgui;opencv_ml;opencv_imgproc;opencv_flann;opencv_core)
elseif(OPENCV_LIB STREQUAL fat)
message(STATUS Using OpenCV from foobar repository.)
include_directories($ENV{HOME}/foo/bar)
link_directories($ENV{HOME}/foo/bar)
set(OpenCV_LIBS
opencv_gpu;opencv_contrib;opencv_legacy;opencv_objdetect;opencv_calib3d;opencv_features2d;opencv_video;opencv_highgui;opencv_ml;opencv_imgproc;opencv_flann;opencv_core)
elseif(OPENCV_LIB STREQUAL system)
message(STATUS Using OpenCV that got automatically detected.)
find_package( OpenCV REQUIRED )
else()
message(ERROR No OpenCV library found!)
endif()
Not that clean, but works well enough for now :-) I'm always interested
in suggestions for making this shorter, cleaner, more elegant,...
Regards,
Bart
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Re: [CMake] Using different installs/versions of the OpenCV library
Hello Bart,
have you tried setting OpenCV_DIR before calling find_package()? I'm
basing this on http://opencv.willowgarage.com/wiki/FindOpenCV.cmake
Most package PKGFind.cmake scripts look if PKG_DIR is set to a valid
directory and look there first for all the libraries before checking
default install paths. You would use it like this:
if(USE_TMP_OPENCV)
set(OpenCV_DIR /tmp/opencv_install)
elseif(USE_FAT_OPENCV)
set(OpenCV_DIR /bla/bla/bla/opencv)
endif()
find_package(OpenCV REQUIRED)
Cheers,
Andreas S.
Am 14.02.2013 11:42, schrieb Bart Vandewoestyne:
Hello list,
To compile and link my code with the OpenCV library, I use
find_package( OpenCV REQUIRED )
...
add_executable(framecountertest framecountertest.cpp)
target_link_libraries(framecountertest ${OpenCV_LIBS})
and this works just fine: the OpenCV library that got installed using
my package management system on Ubuntu 12.10 is being used.
However, under the directory /tmp/opencv_install I have another manual
installation of a more recent OpenCV library, and I would like to use
that one instead of the default on my system, or easily switch between
the two versions. How should I specify that in my CMakeLists.txt
file? I have tried
set(OpenCV_FOUND 1)
set(OpenCV_INCLUDE_DIR
/home/bart/Git/Research/fat/inc/TraficonOpenCv/opencv)
set(OpenCV_LIBS
opencv_gpu;opencv_contrib;opencv_legacy;opencv_objdetect;opencv_calib3d;opencv_features2d;opencv_video;opencv_highgui;opencv_ml;opencv_imgproc;opencv_flann;opencv_core)
include_directories(${OpenCV_INCLUDE_DIR})
...
add_executable(framecountertest framecountertest.cpp)
target_link_libraries(framecountertest ${OpenCV_LIBS})
but even with these commands, still the default libs on my system are
being used...
What is the correct way to specify that I want to build with the
install under /tmp/opencv_install ? And how can I easily switch
between versions without needing to remove one or the other version?
Thanks!
Bart
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Andreas Stahl, Dipl. Medien-Inf.
Technische Universität Dresden
Fakultät Informatik
Institut für Software- und Multimediatechnik
Professur Mediengestaltung
01062 Dresden
Tel.: +49 (351) 463-37928
Fax: +49 (351) 463-39261
E-Mail: andreas.st...@tu-dresden.de
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