title: cross compilation of opencv for arm
body: <p>I am a newbie to ARM. I am trying to cross compile opencv 2.3.1 for ARM9 board with linux 2.3
  After generating a cmake file when i make i get the error as follows</p>
  
  <p>Desktop/opencv/OpenCV-2.3.1/modules/flann/include/opencv2/flann/dist.h: In function 'T cvflann::abs(T) [with T = long double]':</p>
  
  <p>OpenCV-2.3.1/modules/flann/include/opencv2/flann/dist.h:63: error: 'fabsl' was not declared in this scope</p>
  
  <p>make[2]: <em>*</em> [modules/flann/CMakeFiles/opencv_flann.dir/src/precomp.obj] Error 1</p>
  
  <p>make[1]: <em>*</em> [modules/flann/CMakeFiles/opencv_flann.dir/all] Error 2</p>
  
  <p>make: <em>*</em> [all] Error 2</p>
  
  <p>Thanx all</p>