nvcc fatal : Unknown option flto

[aradhyamathur]

upon running cmake ../ as shown in installation instructions no error is encountered, however upon running cmake --build . --config Release the following error is obtained -

[ 96%] Built target ply2points
Scanning dependencies of target pyoctree
[ 97%] Building CXX object python/CMakeFiles/pyoctree.dir/pyoctree.cpp.o
[ 98%] Linking CUDA device code CMakeFiles/pyoctree.dir/cmake_device_link.o
nvcc fatal : Unknown option 'flto'
python/CMakeFiles/pyoctree.dir/build.make:84: recipe for target 'python/CMakeFiles/pyoctree.dir/cmake_device_link.o' failed
make[2]: *** [python/CMakeFiles/pyoctree.dir/cmake_device_link.o] Error 1
CMakeFiles/Makefile2:1017: recipe for target 'python/CMakeFiles/pyoctree.dir/all' failed
make[1]: *** [python/CMakeFiles/pyoctree.dir/all] Error 2
Makefile:83: recipe for target 'all' failed
make: *** [all] Error 2

What could be a possible reason for the same ?

[wang-ps]

Does this issue still exist?

[aradhyamathur]

Actually yes, it pertains to cuda version, I noticed that after cmake this flag gets added, so one has to manually remove it.

[wang-ps]

I have just tried on my own PC (Ubuntu 16.04, Cuda 10.1), and did not reproduce the error. Could you provide your compiling environments?

[aradhyamathur]

Cuda 10.0, Ubuntu 18.04.1, python 3.7

[wang-ps]

Try the following command

cmake ..  -DUSE_PYTHON=OFF && cmake --build . --config Release

[aradhyamathur]

Thanks this worked.