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I've installed Cuda on my macbook and now I'm trying to install opencv and I follow the instructions I'm given through various tutorials.

When I get to the point of writing make -j" in the same folder where the opencv tarball is downloaded I get this error:

Building NVCC (Device) object modules/core/CMakeFiles/cuda_compile.dir/src/cuda/./cuda_compile_generated_matrix_operations.cu.o
[ 18%] Built target IlmImf
clang: error: unsupported option '-dumpspecs'
clang: error: no input files
CMake Error at cuda_compile_generated_matrix_operations.cu.o.cmake:206 (message):
  Error generating
  /Users/nickververis/Documents/opencv-2.4.6.1/opencv-2.4.6.1/build/modules/core/CMakeFiles/cuda_compile.dir/src/cuda/./cuda_compile_generated_matrix_operations.cu.o


make[2]: *** [modules/core/CMakeFiles/cuda_compile.dir/src/cuda/./cuda_compile_generated_matrix_operations.cu.o] Error 1
make[1]: *** [modules/core/CMakeFiles/opencv_core.dir/all] Error 2
make: *** [all] Error 2

The thing is that I've even tried to change the path of CUDA_HOST_COMPILER by typing cmake -DCUDA_HOST_COMPILER:FILEPATH=/usr/bin/gcc as many other posts suggest me to, but I've got no results because I'm still getting error when typing make -j8.

Kara
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Nick Ververis
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  • Nikos, allakse to name se latin form wste na mporei kaneis na se kanei tag kata to reply. – LovaBill Jul 15 '13 at 14:01
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    NVCC needs gcc as its compiler. Here it is using clang. Google around to figure out how to change that. – Pavan Yalamanchili Jul 15 '13 at 19:23
  • I'm trying to change it by typing cmake -DCUDA_HOST_COMPILER:FILEPATH=/usr/bin/gcc but I'm not sure I'm doing it in the correct folder.On which folder should I run this command? – Nick Ververis Jul 17 '13 at 05:30
  • I ran this command ( -DCUDA_HOST_COMPILER:FILEPATH=/usr/bin/gcc) on the same folder where the CmakeLists.txt were created (by running cmake -G "Unix Makefiles"..) and it looks like its completed: -- Configuring done -- Generating done But now once more when i move into the build folder and try to "make -j8" I get this same error: clang: error: unsupported option '-dumpspecs' clang: error: no input files So it looks like I haven't really changed the compiler... – Nick Ververis Jul 17 '13 at 06:23

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