Installing Opencv make error

Question

When I try to install opencv-3.0-alpha with python 2.7 to Raspberry pi 2. I got an error.

[ 24%] Building CXX object modules/core/CMakeFiles/opencv_core.dir/src/matmul.cpp.o [ 24%] Building CXX object modules/core/CMakeFiles/opencv_core.dir/opencl_kernels_core.cpp.o Linking CXX shared library ../../lib/libopencv_core.so /usr/bin/ld: ../../../3rdparty/ippicv/unpack/ippicv_lnx/lib/ia32/libippicv.a(ippinit.o): Relocations in generic ELF (EM: 3) ../../../3rdparty/ippicv/unpack/ippicv_lnx/lib/ia32/libippicv.a: error adding symbols: File in wrong format collect2: error: ld returned 1 exit status modules/core/CMakeFiles/opencv_core.dir/build.make:1213: recipe for target 'lib/libopencv_core.so.3.0.0' failed make[2]: * [lib/libopencv_core.so.3.0.0] Error 1 CMakeFiles/Makefile2:1392: recipe for target 'modules/core/CMakeFiles/opencv_core.dir/all' failed make[1]: * [modules/core/CMakeFiles/opencv_core.dir/all] Error 2 Makefile:137: recipe for target 'all' failed make: *** [all] Error 2

What should i do to solve this problem?

Answer 1

Bit of googling leads me to believe it might be related to compiling 32bit version of OpenCV on a 64 bit OS where it tries to link against a 64 bit library OR vice versa.

see this here and this has a solution that might work for you

Answer 2

Got this error when build static opencv, solve this by disabling IPP in cmake.

WITH_IPP=OFF