title: Make stops everytime on a different file
body: <p>I'm trying to compile some libraries with make, such as Opencv and I'm just curious about it's behaviour. When I run make for example 3 times, it stops and gives error on different files each time while linking. There's also different percentage each time. What does it mean? Make builts targets always in different order or what? </p>
  
  <p>[edit] add output of <code>make</code>, don't know if anything can be find out from it.</p>
  
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  Linking CXX executable ../../bin/opencv_perf_xfeatures2d
  [ 80%] Built target opencv_perf_xfeatures2d
  [ 80%] Built target opencv_test_xfeatures2d_pch_dephelp
  [ 80%] Built target pch_Generate_opencv_test_xfeatures2d
  Scanning dependencies of target opencv_test_xfeatures2d
  [ 80%] Building CXX object modules/xfeatures2d/CMakeFiles/opencv_test_xfeatures2d.dir/test/test_detectors.cpp.o
  [ 80%] Building CXX object modules/xfeatures2d/CMakeFiles/opencv_test_xfeatures2d.dir/test/test_surf.cuda.cpp.o
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  Linking CXX executable ../../bin/opencv_test_xfeatures2d
  [ 80%] Built target opencv_test_xfeatures2d
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  [ 81%] Building CXX object modules/ximgproc/CMakeFiles/opencv_ximgproc.dir/src/sparse_match_interpolators.cpp.o
  In file included from /home/tomas/Downloads/opencv-3.0.0/modules/core/include/opencv2/core.hpp:54:0,
                   from /home/tomas/Downloads/opencv-3.0.0/build/modules/ximgproc/precomp.hpp:40:
  /home/tomas/opencv_contrib/opencv_contrib/modules/ximgproc/src/sparse_match_interpolators.cpp: In member function ‘virtual void cv::ximgproc::EdgeAwareInterpolatorImpl::interpolate(cv::InputArray, cv::InputArray, cv::InputArray, cv::InputArray, cv::OutputArray)’:
  /home/tomas/opencv_contrib/opencv_contrib/modules/ximgproc/src/sparse_match_interpolators.cpp:171:52: error: ‘const class cv::_InputArray’ has no member named ‘isVector’
       CV_Assert( !from_points.empty() &amp;&amp; from_points.isVector() &amp;&amp;
                                                      ^
  /home/tomas/Downloads/opencv-3.0.0/modules/core/include/opencv2/core/base.hpp:389:33: note: in definition of macro ‘CV_Assert’
   #define CV_Assert( expr ) if(!!(expr)) ; else cv::error( cv::Error::StsAssert, #expr, CV_Func, __FILE__, __LINE__ )
                                   ^
  /home/tomas/opencv_contrib/opencv_contrib/modules/ximgproc/src/sparse_match_interpolators.cpp:172:52: error: ‘const class cv::_InputArray’ has no member named ‘isVector’
                  !to_points  .empty() &amp;&amp; to_points  .isVector() &amp;&amp;
                                                      ^
  /home/tomas/Downloads/opencv-3.0.0/modules/core/include/opencv2/core/base.hpp:389:33: note: in definition of macro ‘CV_Assert’
   #define CV_Assert( expr ) if(!!(expr)) ; else cv::error( cv::Error::StsAssert, #expr, CV_Func, __FILE__, __LINE__ )
                                   ^
  make[2]: *** [modules/ximgproc/CMakeFiles/opencv_ximgproc.dir/src/sparse_match_interpolators.cpp.o] Error 1
  make[1]: *** [modules/ximgproc/CMakeFiles/opencv_ximgproc.dir/all] Error 2
  make: *** [all] Error 2
  </code></pre>