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 /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,
On Fri, 2020-02-07 at 00:33 +0530, Danishka Navin 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.fc30x86_64 opencv-core-3.4.4-10.fc30.x86_64 opencv-contrib-3.4.4-10.fc30x86_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 /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
I haven't done this in a while, but there were some changes to bash environment I seem to remember. Either LIBRARY_PATH or LD_LIBRARY_PATH or something similar. I've completely rebuilt my system since then, so I don't have the old bashrc to check. But the opencv stuff documents it on their webpage I think.
REgards, Les H
On Thu, 6 Feb 2020 at 15:04, Danishka Navin danishka@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. Try:
g++ -o "sample" ./main.o -lopencv_core -lopencv_highgui
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
On Fri, Feb 7, 2020 at 4:07 AM George N. White III gnwiii@gmail.com wrote:
On Thu, 6 Feb 2020 at 15:04, Danishka Navin danishka@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
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On Thu, 2020-02-06 at 18:36 -0400, George N. White III wrote:
On Thu, 6 Feb 2020 at 15:04, Danishka Navin danishka@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.34 -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. Try: g++ -o "sample" ./main.o -lopencv_core -lopencv_highgui Stackoverflow 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
Did you check if the make file supports make config? If so run that before the make.
Regards, Les H
-
Danishka Navin -
George N. White III -
Howard Howell