On Fri, Feb 7, 2020 at 4:07 AM George N. White III <gnw...@gmail.com> wrote:
> On Thu, 6 Feb 2020 at 15:04, Danishka Navin <danis...@gmail.com> wrote: > >> Hi, >> >> I am new to eclipse and opencv and I was trying to build a sample c++ >> code using Eclipse. >> >> I have installed following packages. >> rpm -qa | grep opencv >> opencv-devel-3.4.4-10.fc30.x86_64 >> opencv-3.4.4-10.fc30.x86_64 >> opencv-core-3.4.4-10.fc30.x86_64 >> opencv-contrib-3.4.4-10.fc30.x86_64 >> >> >> 00:29:09 **** Incremental Build of configuration Debug for project sample >> **** >> make all >> Building target: sample >> Invoking: GCC C++ Linker >> g++ -L/usr/lib64/ -L/usr/lib/ -o "sample" ./main.o >> -llibopencv_core.so.3.4 -llibopencv_core.so.3.4.4 >> -llibopencv_highgui.so.3.4 -llibopencv_highgui.so.3.4.4 >> > > libopencv_core.so.3.4 should be a symbolic link to libopencv_core.so.3.4.4, > same for libopencv_highgui.so.3.4. > that's right $ ls -l /usr/lib64/libopencv_core.so* lrwxrwxrwx 1 root root 21 May 21 2019 /usr/lib64/libopencv_core.so -> libopencv_core.so.3.4 lrwxrwxrwx 1 root root 23 May 21 2019 /usr/lib64/libopencv_core.so.3.4 -> libopencv_core.so.3.4.4 -rwxr-xr-x 1 root root 4898472 May 21 2019 /usr/lib64/libopencv_core.so.3.4.4 $ ls -l /usr/lib64/libopencv_highgui.so* lrwxrwxrwx 1 root root 24 May 21 2019 /usr/lib64/libopencv_highgui.so -> libopencv_highgui.so.3.4 lrwxrwxrwx 1 root root 26 May 21 2019 /usr/lib64/libopencv_highgui.so.3.4 -> libopencv_highgui.so.3.4.4 -rwxr-xr-x 1 root root 425512 May 21 2019 /usr/lib64/libopencv_highgui.so.3.4.4 > Try: > > g++ -o "sample" ./main.o -lopencv_core -lopencv_highgui > no errors [danishka@2000 Debug]$ pwd /home/danishka/workspace/sample/Debug [danishka@2000 Debug]$ ls main.d main.o makefile objects.mk sources.mk subdir.mk [danishka@2000 Debug]$ g++ -o "sample" ./main.o -lopencv_core -lopencv_highgui [danishka@2000 Debug]$ ls main.d main.o makefile objects.mk sample sources.mk subdir.mk [danishka@2000 Debug]$ ls -l total 124 -rw-rw-r-- 1 danishka danishka 20 Feb 7 00:26 main.d -rw-rw-r-- 1 danishka danishka 54040 Feb 7 00:26 main.o -rw-rw-r-- 1 danishka danishka 1318 Feb 7 00:29 makefile -rw-rw-r-- 1 danishka danishka 337 Feb 7 00:29 objects.mk -rwxrwxr-x 1 danishka danishka 48224 Feb 7 09:19 sample -rw-rw-r-- 1 danishka danishka 526 Feb 7 00:29 sources.mk -rw-rw-r-- 1 danishka danishka 708 Feb 7 00:29 subdir.mk > Stackoverflow > <https://stackoverflow.com/questions/13904117/compiling-and-linking-opencv-in-ubuntu-12-04> > has > this among other solutions. > > >> /usr/bin/ld: cannot find -llibopencv_core.so.3.4 >> /usr/bin/ld: cannot find -llibopencv_core.so.3.4.4 >> /usr/bin/ld: cannot find -llibopencv_highgui.so.3.4 >> /usr/bin/ld: cannot find -llibopencv_highgui.so.3.4.4 >> collect2: error: ld returned 1 exit status >> make: *** [makefile:46: sample] Error 1 >> "make all" terminated with exit code 2. Build might be incomplete. >> >> 00:29:10 Build Failed. 5 errors, 0 warnings. (took 419ms) >> >> >> $ locate opencv_core.so.3.4 >> /usr/lib64/libopencv_core.so.3.4 >> /usr/lib64/libopencv_core.so.3.4.4 >> >> I have already added /usr/lib64/ and /usr/lib/ as library search paths in >> eclipse. >> >> Is there anything missing in my config? >> >> Regards, >> -- >> Danishka Navin >> >> > -- > George N. White III > > _______________________________________________ > users mailing list -- users@lists.fedoraproject.org > To unsubscribe send an email to users-le...@lists.fedoraproject.org > Fedora Code of Conduct: > https://docs.fedoraproject.org/en-US/project/code-of-conduct/ > List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines > List Archives: > https://lists.fedoraproject.org/archives/list/users@lists.fedoraproject.org > -- Danishka Navin
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