errors when building opencv 4.5.0 wit extra modules using Mingw [closed]

edit

exact

g++ --version

please ?

@berak , thanks for replying!, is there any probleme with the version ! it's g++ 4.7.1

throw it away, it's useless

thanks a lot for your time sir , I am going to try this version right now

is there any problem with that version ?

for sure, it's lacking any c++11 support, Mutex, etc.

but please report back !

you'll also need to set

OPENCV_ENABLE_ALLOCATOR_STATS=OFF in cmake, to get it compiled

@berak of course I will do! it might be a stupide question but didn't find the bin folder to add to the system path in this mingw version

@berak thanks a lot Sir!!!! changing the version of my g++ resolved the problem , now I get opencv_450.jar in the bin folder and , libopencv_java450.dll in the lib folder , trying now to run a programm but got an error in this line:

System.load("C:\\Users\\Mini\\Downloads\\es\\lib\\libopencv_java450.dll");

and also when changing it to :

System.loadLibrary(Core.NATIVE_LIBRARY_NAME);

the error is:

Exception in thread "main" java.lang.UnsatisfiedLinkError: C:\Users\Mini\Downloads\es\lib\libopencv_java450.dll: Can't find dependent libraries
at java.base/jdk.internal.loader.NativeLibraries.load(Native Method)
at java.base/jdk.internal.loader.NativeLibraries$NativeLibraryImpl.open(NativeLibraries.java:383)...

Can't find dependent libraries

means, you have built that dynamically linked , so it depends on other opencv dll's (opencv_core450.dll, opencv_imgproc450, etc) at runtime

please add the location of the opencv library dlls tp the PATH env variable

@berak thanks man !! for helping me in each step! all problems are resolved ! and opencv is working successfully