PHP Startup: Unable to load dynamic library !

[aymanrb]

Whenever I try to restart apache now I get the following error:

  PHP Warning:  PHP Startup: Unable to load dynamic library '/usr/lib/php5/20131226/facedetect.so' - /usr/lib/php5/20131226/facedetect.so: undefined symbol: cvLoadImage in Unknown on line 0

  PHP Warning:  PHP Startup: Unable to load dynamic library '/usr/lib/php5/20131226/facedetect.so' - /usr/lib/php5/20131226/facedetect.so: undefined symbol: cvLoadImage in Unknown on line 0

  AH00163: Apache/2.4.18 (Ubuntu) OpenSSL/1.0.2e configured -- resuming normal operations

An ofcourse it won't work since it wasn't loaded !! Any clue what went wrong ?

PHP Version 5.6.17
OpenCV Verison 3.1.0

[jammon88]

I've the same issue!

PHP Version PHP 5.6.19-1
OpenCV Version 3.1.0

[sergiomb2]

+1
facedetect.so: undefined symbol: cvLoadImage, OpenCV Version 3.1.0

[sergiomb2]

I found the fix ,
https://pkgs.fedoraproject.org/cgit/rpms/opencv.git/commit/?id=8332955846ff0d567d346b23248561b37eb855f2

we can't compile opencv with -Wl,--as-needed , because seems that clean cvLoadImage symbol ...

Update this is not the correct fix

[infusion]

Could you please send a PR when it's working for you? I don't have time atm to work on it :/

[sergiomb2]

The fix is in build of opencv unfortunately ...

[slothentic]

Same issue - Installed on Ubuntu 16 latest OpenCV and Facedetected install from source.

[remicollet]

Shoudl be fixed by pr #26

[velpaxl]

Same issue with PHP7.1 & opencv-3.1.0
Is there a workaround?

[sergiomb2]

yes
https://src.fedoraproject.org/cgit/rpms/php-facedetect.git/tree/php-facedetect-pkgconfig.patch

[velpaxl]

Thanks @sergiomb2

[Meloman-zz]

Hi,

I have the same issue at service apache2 restart.
I'm on PHP7.0 / Ubuntu 16.4 LTS / OpenCV 3.2

pkg-config --cflags --libs opencv :
-I/usr/local/include/opencv
-I/usr/local/include
-L/usr/local/lib
-lopencv_dnn
-lopencv_ml
-lopencv_objdetect
-lopencv_shape
-lopencv_stitching
-lopencv_superres
-lopencv_videostab
-lopencv_calib3d
-lopencv_features2d
-lopencv_highgui
-lopencv_videoio
-lopencv_imgcodecs
-lopencv_video
-lopencv_photo
-lopencv_imgproc
-lopencv_flann
-lopencv_core

I tried to compile the infusion and sathieu fork. but no success.

How to patch ?

Thanks

[sergiomb2]

@Meloman-zz , after all we don't need patch opencv , we need patch php-facedetect-pkgconfig

https://src.fedoraproject.org/cgit/rpms/php-facedetect.git/tree/php-facedetect-pkgconfig.patch

[sergiomb2]

#23 if the problem is in stop

[sergiomb2]

@Meloman-zz "retrieve opencv build options from pkg_config #26" was merged .

[infusion]

Could you guys please test the current master branch? I rewrote the code almost completely for PHP7 and to come by the old OpenCV C-interface.