OpenCV compile error

asked 2015-09-24 09:17:45 -0500

On Compiling opencv 2.4.11 on the ubuntu 14.04, I received the following error: -

Linking CXX shared library ../../lib/ /usr/bin/ld: skipping incompatible /usr/lib/gcc/x86_64-linux-gnu/4.7/../../../x86_64-linux-gnu/ when searching for -lm /usr/bin/ld: /usr/lib/gcc/x86_64-linux-gnu/4.7/../../../x86_64-linux-gnu/libm.a(s_sin.o): relocation R_X86_64_32S against `__sincostab' can not be used when making a shared object; recompile with -fPIC /usr/lib/gcc/x86_64-linux-gnu/4.7/../../../x86_64-linux-gnu/libm.a: error adding symbols: Bad value collect2: error: ld returned 1 exit status

make[2]: * [lib/] Error 1

make[1]: * [modules/core/CMakeFiles/opencv_core.dir/all] Error 2 make: * [all] Error 2

It just stops at 21% and shows the error.image description

Can anyone tell me what can be done??

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Have you searched on google? To me it seems that you have more versions of the same lib ... is it?

thdrksdfthmn gravatar imagethdrksdfthmn ( 2015-09-24 09:51:55 -0500 )edit

yeah I guess. When i search for libm.a It shows this :-








And yes I have downloaded gcc-4.7, 4.8 and 4.9, because I thought may be some tool chain error is there! Should I remove all and keep one only?

akash_sachdeva gravatar imageakash_sachdeva ( 2015-09-25 05:04:59 -0500 )edit

interesting.... you should go to askubuntu or other specialised forums, this is not about opencv

thdrksdfthmn gravatar imagethdrksdfthmn ( 2015-09-25 05:56:58 -0500 )edit

Okay. I have done some changes..using cmake-gui. I am getting this error now on make command: -

make[2]: * [3rdparty/lib/libzlib.a] Error 2

make[1]: * [3rdparty/zlib/CMakeFiles/zlib.dir/all] Error 2

make: * [all] Error 2

I have check, 3rdparty/lib is empty

akash_sachdeva gravatar imageakash_sachdeva ( 2015-09-25 07:14:54 -0500 )edit

Does anyone knows how to add this patch?? May be this will solve the problem: -

akash_sachdeva gravatar imageakash_sachdeva ( 2015-09-28 08:11:52 -0500 )edit